transformfeedback.c revision 2be2e1d3ada2d9cb5c1c42e955629d8fbbafcd0b
1de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/* 2de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Mesa 3-D graphics library 3de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * 4de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Copyright (C) 2010 VMware, Inc. All Rights Reserved. 5de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * 6de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Permission is hereby granted, free of charge, to any person obtaining a 7de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * copy of this software and associated documentation files (the "Software"), 8de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * to deal in the Software without restriction, including without limitation 9de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * and/or sell copies of the Software, and to permit persons to whom the 11de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Software is furnished to do so, subject to the following conditions: 12de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * 13de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * The above copyright notice and this permission notice shall be included 14de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * in all copies or substantial portions of the Software. 15de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * 16de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 20de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 23de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 24de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 25de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/* 26de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Vertex transform feedback support. 27de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * 28de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Authors: 29de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Brian Paul 30de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 31de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 32de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 33de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul#include "buffers.h" 34de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul#include "bufferobj.h" 35de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul#include "context.h" 36fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul#include "hash.h" 37db61b9ce39bccc43140357652ceb78baaf2aea44Vinson Lee#include "mfeatures.h" 380117da40cd7edd3d165bb28569c289b37eca12b9Vinson Lee#include "mtypes.h" 39de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul#include "transformfeedback.h" 40a37b2219d6e3f299379c6434d65f300660d12c3eBrian Paul#include "shaderapi.h" 41a37b2219d6e3f299379c6434d65f300660d12c3eBrian Paul#include "shaderobj.h" 42b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu#include "main/dispatch.h" 43de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 44ec2b92f98c2e7f161521b447cc1d9a36bce3707cBrian Paul#include "program/prog_parameter.h" 45ec2b92f98c2e7f161521b447cc1d9a36bce3707cBrian Paul//#include "program/shader_api.h" 46de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 47de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 48b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu#if FEATURE_EXT_transform_feedback 49b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 50b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 51de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 52fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Do reference counting of transform feedback buffers. 53fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 54fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 55fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulreference_transform_feedback_object(struct gl_transform_feedback_object **ptr, 56fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 57fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 58fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (*ptr == obj) 59fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 60fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 61fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (*ptr) { 62fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* Unreference the old object */ 63fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *oldObj = *ptr; 64fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 65fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT(oldObj->RefCount > 0); 66fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul oldObj->RefCount--; 67fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 68fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (oldObj->RefCount == 0) { 69fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 70fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (ctx) 71fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.DeleteTransformFeedback(ctx, oldObj); 72fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 73fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 74fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul *ptr = NULL; 75fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 76fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT(!*ptr); 77fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 78fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj) { 79fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* reference new object */ 80fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->RefCount == 0) { 81fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_problem(NULL, "referencing deleted transform feedback object"); 82fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul *ptr = NULL; 83fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 84fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul else { 85fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->RefCount++; 86fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul *ptr = obj; 87fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 88fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 89fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 90fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 91fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 92fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 93de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Check if the given primitive mode (as in glBegin(mode)) is compatible 94de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * with the current transform feedback mode (if it's enabled). 95de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * This is to be called from glBegin(), glDrawArrays(), glDrawElements(), etc. 96de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * 97de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * \return GL_TRUE if the mode is OK, GL_FALSE otherwise. 98de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 99de8530e1546733bf21b2e0518d6c5bda560770b9Brian PaulGLboolean 100f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_mesa_validate_primitive_mode(struct gl_context *ctx, GLenum mode) 101de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 102fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (ctx->TransformFeedback.CurrentObject->Active) { 103de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul switch (mode) { 104de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_POINTS: 105de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return ctx->TransformFeedback.Mode == GL_POINTS; 106de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_LINES: 107de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_LINE_STRIP: 108de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_LINE_LOOP: 109de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return ctx->TransformFeedback.Mode == GL_LINES; 110de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul default: 111de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return ctx->TransformFeedback.Mode == GL_TRIANGLES; 112de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 113de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 114de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return GL_TRUE; 115de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 116de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 117de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 118de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 119de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Check that all the buffer objects currently bound for transform 120de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * feedback actually exist. Raise a GL_INVALID_OPERATION error if 121de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * any buffers are missing. 122de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * \return GL_TRUE for success, GL_FALSE if error 123de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 124de8530e1546733bf21b2e0518d6c5bda560770b9Brian PaulGLboolean 125f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_mesa_validate_transform_feedback_buffers(struct gl_context *ctx) 126de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 127fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* XXX to do */ 128de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return GL_TRUE; 129de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 130de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 131de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 132de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 133de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 134de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Per-context init for transform feedback. 135de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 136de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid 137f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_mesa_init_transform_feedback(struct gl_context *ctx) 138de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 13932a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu /* core mesa expects this, even a dummy one, to be available */ 14032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ASSERT(ctx->Driver.NewTransformFeedback); 141fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 142fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.DefaultObject = 143fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.NewTransformFeedback(ctx, 0); 144fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 145fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->TransformFeedback.DefaultObject->RefCount == 1); 146fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 147fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul reference_transform_feedback_object(&ctx->TransformFeedback.CurrentObject, 148fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.DefaultObject); 149fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 150fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->TransformFeedback.DefaultObject->RefCount == 2); 151fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 152fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.Objects = _mesa_NewHashTable(); 153fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 154de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_reference_buffer_object(ctx, 155de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul &ctx->TransformFeedback.CurrentBuffer, 156de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul ctx->Shared->NullBufferObj); 157de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 158de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 159de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 160fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 161fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 162fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Callback for _mesa_HashDeleteAll(). 163fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 164fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 165fef6e36e0736a68e24d7844bae65a01de8359214Brian Pauldelete_cb(GLuint key, void *data, void *userData) 166fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 167f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg struct gl_context *ctx = (struct gl_context *) userData; 168fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj = 169fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul (struct gl_transform_feedback_object *) data; 170fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 171fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.DeleteTransformFeedback(ctx, obj); 172fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 173fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 174fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 175de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 176de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Per-context free/clean-up for transform feedback. 177de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 178de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid 179f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_mesa_free_transform_feedback(struct gl_context *ctx) 180de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 18132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu /* core mesa expects this, even a dummy one, to be available */ 18232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ASSERT(ctx->Driver.NewTransformFeedback); 183fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 184de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_reference_buffer_object(ctx, 185de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul &ctx->TransformFeedback.CurrentBuffer, 186de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul NULL); 187fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 188fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* Delete all feedback objects */ 189fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_HashDeleteAll(ctx->TransformFeedback.Objects, delete_cb, ctx); 1905b90f83aee89d051983485cdec5b5db2f3659256Brian Paul _mesa_DeleteHashTable(ctx->TransformFeedback.Objects); 191fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 192fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* Delete the default feedback object */ 193fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.DeleteTransformFeedback); 19439c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul ctx->Driver.DeleteTransformFeedback(ctx, 19539c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul ctx->TransformFeedback.DefaultObject); 196fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 197fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.CurrentObject = NULL; 198de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 199de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 200de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 20132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu#else /* FEATURE_EXT_transform_feedback */ 20232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 20332a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu/* forward declarations */ 20432a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wustatic struct gl_transform_feedback_object * 205f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergnew_transform_feedback(struct gl_context *ctx, GLuint name); 20632a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 20732a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wustatic void 208f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergdelete_transform_feedback(struct gl_context *ctx, 20932a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu struct gl_transform_feedback_object *obj); 21032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 21132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu/* dummy per-context init/clean-up for transform feedback */ 21232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wuvoid 213f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_mesa_init_transform_feedback(struct gl_context *ctx) 21432a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu{ 21532a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ctx->TransformFeedback.DefaultObject = new_transform_feedback(ctx, 0); 21632a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ctx->TransformFeedback.CurrentObject = ctx->TransformFeedback.DefaultObject; 21732a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu _mesa_reference_buffer_object(ctx, 21832a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu &ctx->TransformFeedback.CurrentBuffer, 21932a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ctx->Shared->NullBufferObj); 22032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu} 22132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 22232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wuvoid 223f9995b30756140724f41daf963fa06167912be7fKristian Høgsberg_mesa_free_transform_feedback(struct gl_context *ctx) 22432a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu{ 22532a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu _mesa_reference_buffer_object(ctx, 22632a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu &ctx->TransformFeedback.CurrentBuffer, 22732a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu NULL); 22832a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ctx->TransformFeedback.CurrentObject = NULL; 22932a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu delete_transform_feedback(ctx, ctx->TransformFeedback.DefaultObject); 23032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu} 23132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 23232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu#endif /* FEATURE_EXT_transform_feedback */ 23332a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 23432a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 235fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.NewTransformFeedback() */ 236fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic struct gl_transform_feedback_object * 237f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergnew_transform_feedback(struct gl_context *ctx, GLuint name) 238fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 239fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 240fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = CALLOC_STRUCT(gl_transform_feedback_object); 241fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj) { 242fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Name = name; 243fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->RefCount = 1; 244fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 245fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return obj; 246fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 247fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 248fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.DeleteTransformFeedback() */ 249fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 250f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergdelete_transform_feedback(struct gl_context *ctx, 251fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 252fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 253fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GLuint i; 254fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 255fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul for (i = 0; i < Elements(obj->Buffers); i++) { 256fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_reference_buffer_object(ctx, &obj->Buffers[i], NULL); 257fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 258fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 259fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul free(obj); 260fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 261fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 26232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 26332a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu#if FEATURE_EXT_transform_feedback 26432a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 26532a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 266fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.BeginTransformFeedback() */ 267fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 268f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergbegin_transform_feedback(struct gl_context *ctx, GLenum mode, 269fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 270fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 271fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* nop */ 272fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 273fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 274fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.EndTransformFeedback() */ 275fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 276f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergend_transform_feedback(struct gl_context *ctx, 277fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 278fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 279fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* nop */ 280fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 281fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 282fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.PauseTransformFeedback() */ 283fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 284f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergpause_transform_feedback(struct gl_context *ctx, 285fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 286fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 287fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* nop */ 288fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 289fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 290fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.ResumeTransformFeedback() */ 291fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 292f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergresume_transform_feedback(struct gl_context *ctx, 293fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 294fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 295fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* nop */ 296fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 297fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 298fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.DrawTransformFeedback() */ 299fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 300f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergdraw_transform_feedback(struct gl_context *ctx, GLenum mode, 301fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 302fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 303fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* XXX to do */ 304fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* 305fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Get number of vertices in obj's feedback buffer. 306fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Call ctx->Exec.DrawArrays(mode, 0, count); 307fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 308fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 309fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 310fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 311fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 312fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Plug in default device driver functions for transform feedback. 313fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Most drivers will override some/all of these. 314fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 315fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid 316fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_init_transform_feedback_functions(struct dd_function_table *driver) 317fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 318fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->NewTransformFeedback = new_transform_feedback; 319fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->DeleteTransformFeedback = delete_transform_feedback; 320fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->BeginTransformFeedback = begin_transform_feedback; 321fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->EndTransformFeedback = end_transform_feedback; 322fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->PauseTransformFeedback = pause_transform_feedback; 323fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->ResumeTransformFeedback = resume_transform_feedback; 324fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->DrawTransformFeedback = draw_transform_feedback; 325fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 326fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 327fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 328b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wuvoid 329b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu_mesa_init_transform_feedback_dispatch(struct _glapi_table *disp) 330b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu{ 331b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_BeginTransformFeedbackEXT(disp, _mesa_BeginTransformFeedback); 332b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_EndTransformFeedbackEXT(disp, _mesa_EndTransformFeedback); 333b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_BindBufferRangeEXT(disp, _mesa_BindBufferRange); 334b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_BindBufferBaseEXT(disp, _mesa_BindBufferBase); 335b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_BindBufferOffsetEXT(disp, _mesa_BindBufferOffsetEXT); 336b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_TransformFeedbackVaryingsEXT(disp, _mesa_TransformFeedbackVaryings); 337b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_GetTransformFeedbackVaryingEXT(disp, _mesa_GetTransformFeedbackVarying); 338b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu} 339b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 340fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 341fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 342fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ** Begin API functions 343fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul **/ 344fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 345fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 346de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 347de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_BeginTransformFeedback(GLenum mode) 348de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 349fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 350de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 351de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 352fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 353fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 354de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul switch (mode) { 355de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_POINTS: 356de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_LINES: 357de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_TRIANGLES: 358de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* legal */ 359de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul break; 360de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul default: 361de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBeginTransformFeedback(mode)"); 362de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 363de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 364de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 365fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 366de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 367de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBeginTransformFeedback(already active)"); 368de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 369de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 370de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 371fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Active = GL_TRUE; 372de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul ctx->TransformFeedback.Mode = mode; 373fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 374fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.BeginTransformFeedback); 375fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.BeginTransformFeedback(ctx, mode, obj); 376de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 377de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 378de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 379de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 380de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_EndTransformFeedback(void) 381de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 382fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 383de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 384de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 385fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 386fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 387fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj->Active) { 388de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 389de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glEndTransformFeedback(not active)"); 390de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 391de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 392de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 393fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.CurrentObject->Active = GL_FALSE; 394fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 395fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.EndTransformFeedback); 396fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.EndTransformFeedback(ctx, obj); 397de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 398de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 399de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 400de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 401de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Helper used by BindBufferRange() and BindBufferBase(). 402de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 403de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulstatic void 404f9995b30756140724f41daf963fa06167912be7fKristian Høgsbergbind_buffer_range(struct gl_context *ctx, GLuint index, 405de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_buffer_object *bufObj, 406de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLintptr offset, GLsizeiptr size) 407de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 408fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj = 409fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.CurrentObject; 410fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 411de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* The general binding point */ 412de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_reference_buffer_object(ctx, 413de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul &ctx->TransformFeedback.CurrentBuffer, 414de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj); 415de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 416de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* The per-attribute binding point */ 417de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_reference_buffer_object(ctx, 418fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul &obj->Buffers[index], 419de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj); 420de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 421fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->BufferNames[index] = bufObj->Name; 422de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 423fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Offset[index] = offset; 424fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Size[index] = size; 425de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 426de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 427de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 428de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 429de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Specify a buffer object to receive vertex shader results. Plus, 430de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * specify the starting offset to place the results, and max size. 431de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 432de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 433de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_BindBufferRange(GLenum target, GLuint index, 434de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLuint buffer, GLintptr offset, GLsizeiptr size) 435de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 436fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 437de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_buffer_object *bufObj; 438de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 439de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 440de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (target != GL_TRANSFORM_FEEDBACK_BUFFER) { 441de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferRange(target)"); 442de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 443de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 444de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 445fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 446fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 447fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 448de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 449de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferRange(transform feedback active)"); 450de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 451de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 452de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 453de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) { 454de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(index=%d)", index); 455de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 456de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 457de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 458de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if ((size <= 0) || (size & 0x3)) { 459de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* must be positive and multiple of four */ 4609eca0e2c3e9409b5da49d9a5052d3665e7d45bb1Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(size%d)", (int) size); 461de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 462de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 463de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 464de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (offset & 0x3) { 465de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* must be multiple of four */ 466de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 4679eca0e2c3e9409b5da49d9a5052d3665e7d45bb1Brian Paul "glBindBufferRange(offset=%d)", (int) offset); 468de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 469de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 470de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 471de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj = _mesa_lookup_bufferobj(ctx, buffer); 472de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!bufObj) { 473de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 474de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferRange(invalid buffer=%u)", buffer); 475de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 476de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 477de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 478de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (offset + size >= bufObj->Size) { 479de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 48086af037e6a1643284f87c5e01c3fcb09dd07bf35Eric Anholt "glBindBufferRange(offset + size %d > buffer size %d)", 4819eca0e2c3e9409b5da49d9a5052d3665e7d45bb1Brian Paul (int) (offset + size), (int) (bufObj->Size)); 482de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 483de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 484de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 485de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bind_buffer_range(ctx, index, bufObj, offset, size); 486de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 487de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 488de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 489de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 490de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Specify a buffer object to receive vertex shader results. 491de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * As above, but start at offset = 0. 492de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 493de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 494de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer) 495de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 496fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 497de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_buffer_object *bufObj; 498de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLsizeiptr size; 499fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 500de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 501de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (target != GL_TRANSFORM_FEEDBACK_BUFFER) { 502de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferBase(target)"); 503de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 504de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 505de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 506fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 507fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 508fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 509de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 5102be2e1d3ada2d9cb5c1c42e955629d8fbbafcd0bBrian Paul "glBindBufferBase(transform feedback active)"); 511de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 512de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 513de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 514de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) { 515de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferBase(index=%d)", index); 516de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 517de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 518de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 519de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj = _mesa_lookup_bufferobj(ctx, buffer); 520de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!bufObj) { 521de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 522de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferBase(invalid buffer=%u)", buffer); 523de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 524de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 525de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 526de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* default size is the buffer size rounded down to nearest 527de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * multiple of four. 528de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 529de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul size = bufObj->Size & ~0x3; 530de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 531de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bind_buffer_range(ctx, index, bufObj, 0, size); 532de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 533de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 534de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 535de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 536de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Specify a buffer object to receive vertex shader results, plus the 537de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * offset in the buffer to start placing results. 538de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * This function is part of GL_EXT_transform_feedback, but not GL3. 539de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 540de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 541de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer, 542de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLintptr offset) 543de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 544fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 545de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_buffer_object *bufObj; 546de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 547de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLsizeiptr size; 548de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 549de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (target != GL_TRANSFORM_FEEDBACK_BUFFER) { 550de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferOffsetEXT(target)"); 551de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 552de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 553de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 554fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 555fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 556fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 557de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 5582be2e1d3ada2d9cb5c1c42e955629d8fbbafcd0bBrian Paul "glBindBufferOffsetEXT(transform feedback active)"); 559de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 560de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 561de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 562de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) { 563de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 564de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferOffsetEXT(index=%d)", index); 565de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 566de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 567de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 568de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj = _mesa_lookup_bufferobj(ctx, buffer); 569de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!bufObj) { 570de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 571de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferOffsetEXT(invalid buffer=%u)", buffer); 572de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 573de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 574de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 575de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* default size is the buffer size rounded down to nearest 576de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * multiple of four. 577de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 578de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul size = (bufObj->Size - offset) & ~0x3; 579de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 580de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bind_buffer_range(ctx, index, bufObj, offset, size); 581de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 582de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 583de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 584de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 585de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * This function specifies the vertex shader outputs to be written 586de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * to the feedback buffer(s), and in what order. 587de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 588de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 589de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_TransformFeedbackVaryings(GLuint program, GLsizei count, 590de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul const GLchar **varyings, GLenum bufferMode) 591de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 592de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_shader_program *shProg; 593de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLuint i; 594de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 595de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 596de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul switch (bufferMode) { 597de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_INTERLEAVED_ATTRIBS: 598de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul break; 599de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_SEPARATE_ATTRIBS: 600de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul break; 601de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul default: 602de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, 603de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glTransformFeedbackVaryings(bufferMode)"); 604de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 605de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 606de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 607de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (count < 0 || count > ctx->Const.MaxTransformFeedbackSeparateAttribs) { 608de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 609de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glTransformFeedbackVaryings(count=%d)", count); 610de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 611de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 612de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 613de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg = _mesa_lookup_shader_program(ctx, program); 614de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!shProg) { 615de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 616de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glTransformFeedbackVaryings(program=%u)", program); 617de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 618de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 619de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 620de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* free existing varyings, if any */ 621de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) { 622de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul free(shProg->TransformFeedback.VaryingNames[i]); 623de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 624de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul free(shProg->TransformFeedback.VaryingNames); 625de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 626de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* allocate new memory for varying names */ 627de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg->TransformFeedback.VaryingNames = 628de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul (GLchar **) malloc(count * sizeof(GLchar *)); 629de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 630de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!shProg->TransformFeedback.VaryingNames) { 631de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTransformFeedbackVaryings()"); 632de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 633de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 634de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 635de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* Save the new names and the count */ 636de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul for (i = 0; i < (GLuint) count; i++) { 637de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg->TransformFeedback.VaryingNames[i] = _mesa_strdup(varyings[i]); 638de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 639de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg->TransformFeedback.NumVarying = count; 640de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 641de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg->TransformFeedback.BufferMode = bufferMode; 642de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 643de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* The varyings won't be used until shader link time */ 644de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 645de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 646de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 647de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 648de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Get info about the vertex shader's outputs which are to be written 649de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * to the feedback buffer(s). 650de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 651de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 652de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_GetTransformFeedbackVarying(GLuint program, GLuint index, 653de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLsizei bufSize, GLsizei *length, 654de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLsizei *size, GLenum *type, GLchar *name) 655de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 656de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul const struct gl_shader_program *shProg; 657de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul const GLchar *varyingName; 658de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLint v; 659de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 660de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 661de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg = _mesa_lookup_shader_program(ctx, program); 662de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!shProg) { 663de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 664de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glGetTransformFeedbackVaryings(program=%u)", program); 665de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 666de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 667de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 668de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (index >= shProg->TransformFeedback.NumVarying) { 669de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 670de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glGetTransformFeedbackVaryings(index=%u)", index); 671de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 672de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 673de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 674de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul varyingName = shProg->TransformFeedback.VaryingNames[index]; 675de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 676de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul v = _mesa_lookup_parameter_index(shProg->Varying, -1, varyingName); 677de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (v >= 0) { 678de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_program_parameter *param = &shProg->Varying->Parameters[v]; 679de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 680de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* return the varying's name and length */ 681de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_copy_string(name, bufSize, length, varyingName); 682de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 683de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* return the datatype and value's size (in datatype units) */ 684de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (type) 6853100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul *type = param->DataType; 686de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (size) 687de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul *size = param->Size; 688de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 6893100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul else { 6903100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul name[0] = 0; 6913100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul if (length) 6923100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul *length = 0; 6933100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul if (type) 6943100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul *type = 0; 6953100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul if (size) 6963100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul *size = 0; 6973100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul } 698de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 699de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 700fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 701fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 702fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic struct gl_transform_feedback_object * 703f9995b30756140724f41daf963fa06167912be7fKristian Høgsberglookup_transform_feedback_object(struct gl_context *ctx, GLuint name) 704fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 705fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (name == 0) { 706fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return ctx->TransformFeedback.DefaultObject; 707fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 708fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul else 709fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return (struct gl_transform_feedback_object *) 710fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_HashLookup(ctx->TransformFeedback.Objects, name); 711fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 712fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 713fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 714fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 715fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Create new transform feedback objects. Transform feedback objects 716fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * encapsulate the state related to transform feedback to allow quickly 717fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * switching state (and drawing the results, below). 718fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 719fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 720fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 721fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_GenTransformFeedbacks(GLsizei n, GLuint *names) 722fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 723fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GLuint first; 724fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 725fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 726fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT_OUTSIDE_BEGIN_END(ctx); 727fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 728fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (n < 0) { 729fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glGenTransformFeedbacks(n < 0)"); 730fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 731fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 732fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 733fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!names) 734fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 735fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 736fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* we don't need contiguous IDs, but this might be faster */ 737fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul first = _mesa_HashFindFreeKeyBlock(ctx->TransformFeedback.Objects, n); 738fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (first) { 739fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GLsizei i; 740fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul for (i = 0; i < n; i++) { 741fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj 742fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul = ctx->Driver.NewTransformFeedback(ctx, first + i); 743fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj) { 744fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks"); 745fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 746fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 747fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul names[i] = first + i; 748fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_HashInsert(ctx->TransformFeedback.Objects, first + i, obj); 749fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 750fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 751fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul else { 752fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks"); 753fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 754fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 755fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 756fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 757fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 758fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Is the given ID a transform feedback object? 759fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 760fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 761fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulGLboolean GLAPIENTRY 762fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_IsTransformFeedback(GLuint name) 763fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 764fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 765fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 766fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); 767fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 768fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (name && lookup_transform_feedback_object(ctx, name)) 769fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return GL_TRUE; 770fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul else 771fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return GL_FALSE; 772fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 773fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 774fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 775fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 776fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Bind the given transform feedback object. 777fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 778fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 779fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 780d74f525060f779cfe449c20853b11ba2bbcdea6dVinson Lee_mesa_BindTransformFeedback(GLenum target, GLuint name) 781fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 782fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 783fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 784fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 785fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (target != GL_TRANSFORM_FEEDBACK) { 786fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBindTransformFeedback(target)"); 787fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 788fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 789fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 790fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (ctx->TransformFeedback.CurrentObject->Active && 791fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul !ctx->TransformFeedback.CurrentObject->Paused) { 792fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 79339c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul "glBindTransformFeedback(transform is active, or not paused)"); 794fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 795fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 796fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 797fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = lookup_transform_feedback_object(ctx, name); 798fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj) { 799fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 800fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul "glBindTransformFeedback(name=%u)", name); 801fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 802fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 803fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 804fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul reference_transform_feedback_object(&ctx->TransformFeedback.CurrentObject, 805fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj); 806fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 807fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 808fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 809fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 810fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Delete the given transform feedback objects. 811fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 812fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 813fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 814fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_DeleteTransformFeedbacks(GLsizei n, const GLuint *names) 815fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 816fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GLint i; 817fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 818fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 819fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT_OUTSIDE_BEGIN_END(ctx); 820fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 821fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (n < 0) { 822fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteTransformFeedbacks(n < 0)"); 823fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 824fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 825fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 826fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!names) 827fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 828fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 829fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul for (i = 0; i < n; i++) { 830fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (names[i] > 0) { 831fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj 832fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul = lookup_transform_feedback_object(ctx, names[i]); 833fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj) { 834fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 835fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 836fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul "glDeleteTransformFeedbacks(object %u is active)", 837fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul names[i]); 838fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 839fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 840fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_HashRemove(ctx->TransformFeedback.Objects, names[i]); 841fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* unref, but object may not be deleted until later */ 842fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul reference_transform_feedback_object(&obj, NULL); 843fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 844fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 845fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 846fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 847fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 848fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 849fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 850fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Pause transform feedback. 851fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 852fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 853fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 854fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_PauseTransformFeedback(void) 855fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 856fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 857fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 858fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 859fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 860fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 861fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj->Active || obj->Paused) { 862fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 863fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul "glPauseTransformFeedback(feedback not active or already paused)"); 864fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 865fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 866fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 867fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Paused = GL_TRUE; 868fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 869fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.PauseTransformFeedback); 870fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.PauseTransformFeedback(ctx, obj); 871fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 872fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 873fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 874fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 875fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Resume transform feedback. 876fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 877fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 878fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 879fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_ResumeTransformFeedback(void) 880fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 881fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 882fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 883fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 884fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 885fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 886fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj->Active || !obj->Paused) { 887fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 88839c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul "glPauseTransformFeedback(feedback not active or not paused)"); 889fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 890fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 891fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 892fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Paused = GL_FALSE; 893fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 894fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.ResumeTransformFeedback); 895fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.ResumeTransformFeedback(ctx, obj); 896fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 897fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 898fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 899fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 900fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Draw the vertex data in a transform feedback object. 901fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * \param mode GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc. 902fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * \param name the transform feedback object 903fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * The number of vertices comes from the transform feedback object. 904fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * User still has to setup of the vertex attribute info with 905fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * glVertexPointer, glColorPointer, etc. 906fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 907fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 908fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 909fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_DrawTransformFeedback(GLenum mode, GLuint name) 910fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 911fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 912fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj = 913fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul lookup_transform_feedback_object(ctx, name); 914fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 91539c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul if (mode > GL_POLYGON) { 91639c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, 91739c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul "glDrawTransformFeedback(mode=0x%x)", mode); 91839c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul return; 91939c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul } 920fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj) { 921fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 922fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul "glDrawTransformFeedback(name = %u)", name); 923fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 924fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 925fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 926fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* XXX check if EndTransformFeedback has never been called while 927fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * the object was bound 928fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 929fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 930fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.DrawTransformFeedback); 931fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.DrawTransformFeedback(ctx, mode, obj); 932fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 933fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 934fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 935fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/* 936fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulXXX misc to do: 937fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 938fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulglGet*() for 939fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 940fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulGL_TRANSFORM_FEEDBACK_BUFFER_PAUSED 941fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulGL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE 942fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulGL_TRANSFORM_FEEDBACK_BINDING 943fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul*/ 944b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 945b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 946b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu#endif /* FEATURE_EXT_transform_feedback */ 947