transformfeedback.c revision 9eca0e2c3e9409b5da49d9a5052d3665e7d45bb1
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" 37de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul#include "transformfeedback.h" 38a37b2219d6e3f299379c6434d65f300660d12c3eBrian Paul#include "shaderapi.h" 39a37b2219d6e3f299379c6434d65f300660d12c3eBrian Paul#include "shaderobj.h" 40b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu#include "main/dispatch.h" 41de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 42ec2b92f98c2e7f161521b447cc1d9a36bce3707cBrian Paul#include "program/prog_parameter.h" 43ec2b92f98c2e7f161521b447cc1d9a36bce3707cBrian Paul//#include "program/shader_api.h" 44de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 45de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 46b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu#if FEATURE_EXT_transform_feedback 47b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 48b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 49de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 50fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Do reference counting of transform feedback buffers. 51fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 52fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 53fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulreference_transform_feedback_object(struct gl_transform_feedback_object **ptr, 54fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 55fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 56fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (*ptr == obj) 57fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 58fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 59fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (*ptr) { 60fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* Unreference the old object */ 61fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *oldObj = *ptr; 62fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 63fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT(oldObj->RefCount > 0); 64fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul oldObj->RefCount--; 65fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 66fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (oldObj->RefCount == 0) { 67fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 68fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (ctx) 69fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.DeleteTransformFeedback(ctx, oldObj); 70fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 71fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 72fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul *ptr = NULL; 73fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 74fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT(!*ptr); 75fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 76fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj) { 77fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* reference new object */ 78fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->RefCount == 0) { 79fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_problem(NULL, "referencing deleted transform feedback object"); 80fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul *ptr = NULL; 81fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 82fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul else { 83fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->RefCount++; 84fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul *ptr = obj; 85fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 86fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 87fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 88fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 89fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 90fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 91de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Check if the given primitive mode (as in glBegin(mode)) is compatible 92de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * with the current transform feedback mode (if it's enabled). 93de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * This is to be called from glBegin(), glDrawArrays(), glDrawElements(), etc. 94de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * 95de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * \return GL_TRUE if the mode is OK, GL_FALSE otherwise. 96de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 97de8530e1546733bf21b2e0518d6c5bda560770b9Brian PaulGLboolean 98de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_validate_primitive_mode(GLcontext *ctx, GLenum mode) 99de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 100fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (ctx->TransformFeedback.CurrentObject->Active) { 101de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul switch (mode) { 102de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_POINTS: 103de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return ctx->TransformFeedback.Mode == GL_POINTS; 104de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_LINES: 105de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_LINE_STRIP: 106de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_LINE_LOOP: 107de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return ctx->TransformFeedback.Mode == GL_LINES; 108de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul default: 109de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return ctx->TransformFeedback.Mode == GL_TRIANGLES; 110de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 111de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 112de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return GL_TRUE; 113de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 114de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 115de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 116de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 117de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Check that all the buffer objects currently bound for transform 118de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * feedback actually exist. Raise a GL_INVALID_OPERATION error if 119de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * any buffers are missing. 120de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * \return GL_TRUE for success, GL_FALSE if error 121de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 122de8530e1546733bf21b2e0518d6c5bda560770b9Brian PaulGLboolean 123de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_validate_transform_feedback_buffers(GLcontext *ctx) 124de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 125fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* XXX to do */ 126de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return GL_TRUE; 127de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 128de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 129de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 130de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 131de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 132de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Per-context init for transform feedback. 133de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 134de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid 135de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_init_transform_feedback(GLcontext *ctx) 136de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 13732a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu /* core mesa expects this, even a dummy one, to be available */ 13832a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ASSERT(ctx->Driver.NewTransformFeedback); 139fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 140fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.DefaultObject = 141fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.NewTransformFeedback(ctx, 0); 142fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 143fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->TransformFeedback.DefaultObject->RefCount == 1); 144fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 145fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul reference_transform_feedback_object(&ctx->TransformFeedback.CurrentObject, 146fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.DefaultObject); 147fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 148fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->TransformFeedback.DefaultObject->RefCount == 2); 149fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 150fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.Objects = _mesa_NewHashTable(); 151fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 152de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_reference_buffer_object(ctx, 153de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul &ctx->TransformFeedback.CurrentBuffer, 154de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul ctx->Shared->NullBufferObj); 155de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 156de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 157de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 158fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 159fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 160fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Callback for _mesa_HashDeleteAll(). 161fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 162fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 163fef6e36e0736a68e24d7844bae65a01de8359214Brian Pauldelete_cb(GLuint key, void *data, void *userData) 164fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 165fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GLcontext *ctx = (GLcontext *) userData; 166fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj = 167fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul (struct gl_transform_feedback_object *) data; 168fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 169fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.DeleteTransformFeedback(ctx, obj); 170fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 171fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 172fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 173de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 174de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Per-context free/clean-up for transform feedback. 175de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 176de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid 177de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_free_transform_feedback(GLcontext *ctx) 178de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 17932a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu /* core mesa expects this, even a dummy one, to be available */ 18032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ASSERT(ctx->Driver.NewTransformFeedback); 181fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 182de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_reference_buffer_object(ctx, 183de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul &ctx->TransformFeedback.CurrentBuffer, 184de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul NULL); 185fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 186fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* Delete all feedback objects */ 187fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_HashDeleteAll(ctx->TransformFeedback.Objects, delete_cb, ctx); 1885b90f83aee89d051983485cdec5b5db2f3659256Brian Paul _mesa_DeleteHashTable(ctx->TransformFeedback.Objects); 189fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 190fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* Delete the default feedback object */ 191fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.DeleteTransformFeedback); 19239c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul ctx->Driver.DeleteTransformFeedback(ctx, 19339c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul ctx->TransformFeedback.DefaultObject); 194fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 195fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.CurrentObject = NULL; 196de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 197de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 198de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 19932a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu#else /* FEATURE_EXT_transform_feedback */ 20032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 20132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu/* forward declarations */ 20232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wustatic struct gl_transform_feedback_object * 20332a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wunew_transform_feedback(GLcontext *ctx, GLuint name); 20432a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 20532a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wustatic void 20632a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wudelete_transform_feedback(GLcontext *ctx, 20732a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu struct gl_transform_feedback_object *obj); 20832a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 20932a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu/* dummy per-context init/clean-up for transform feedback */ 21032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wuvoid 21132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu_mesa_init_transform_feedback(GLcontext *ctx) 21232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu{ 21332a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ctx->TransformFeedback.DefaultObject = new_transform_feedback(ctx, 0); 21432a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ctx->TransformFeedback.CurrentObject = ctx->TransformFeedback.DefaultObject; 21532a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu _mesa_reference_buffer_object(ctx, 21632a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu &ctx->TransformFeedback.CurrentBuffer, 21732a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ctx->Shared->NullBufferObj); 21832a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu} 21932a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 22032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wuvoid 22132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu_mesa_free_transform_feedback(GLcontext *ctx) 22232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu{ 22332a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu _mesa_reference_buffer_object(ctx, 22432a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu &ctx->TransformFeedback.CurrentBuffer, 22532a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu NULL); 22632a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu ctx->TransformFeedback.CurrentObject = NULL; 22732a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu delete_transform_feedback(ctx, ctx->TransformFeedback.DefaultObject); 22832a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu} 22932a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 23032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu#endif /* FEATURE_EXT_transform_feedback */ 23132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 23232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 233fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.NewTransformFeedback() */ 234fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic struct gl_transform_feedback_object * 235fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulnew_transform_feedback(GLcontext *ctx, GLuint name) 236fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 237fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 238fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = CALLOC_STRUCT(gl_transform_feedback_object); 239fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj) { 240fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Name = name; 241fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->RefCount = 1; 242fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 243fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return obj; 244fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 245fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 246fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.DeleteTransformFeedback() */ 247fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 248fef6e36e0736a68e24d7844bae65a01de8359214Brian Pauldelete_transform_feedback(GLcontext *ctx, 249fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 250fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 251fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GLuint i; 252fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 253fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul for (i = 0; i < Elements(obj->Buffers); i++) { 254fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_reference_buffer_object(ctx, &obj->Buffers[i], NULL); 255fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 256fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 257fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul free(obj); 258fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 259fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 26032a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 26132a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu#if FEATURE_EXT_transform_feedback 26232a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 26332a9b2799e5e1254fdf84af8248ea86e234d6dd4Chia-I Wu 264fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.BeginTransformFeedback() */ 265fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 266fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulbegin_transform_feedback(GLcontext *ctx, GLenum mode, 267fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 268fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 269fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* nop */ 270fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 271fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 272fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.EndTransformFeedback() */ 273fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 274fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulend_transform_feedback(GLcontext *ctx, 275fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 276fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 277fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* nop */ 278fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 279fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 280fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.PauseTransformFeedback() */ 281fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 282fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulpause_transform_feedback(GLcontext *ctx, 283fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 284fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 285fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* nop */ 286fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 287fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 288fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.ResumeTransformFeedback() */ 289fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 290fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulresume_transform_feedback(GLcontext *ctx, 291fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 292fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 293fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* nop */ 294fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 295fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 296fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** Default fallback for ctx->Driver.DrawTransformFeedback() */ 297fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic void 298fef6e36e0736a68e24d7844bae65a01de8359214Brian Pauldraw_transform_feedback(GLcontext *ctx, GLenum mode, 299fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj) 300fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 301fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* XXX to do */ 302fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* 303fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Get number of vertices in obj's feedback buffer. 304fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Call ctx->Exec.DrawArrays(mode, 0, count); 305fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 306fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 307fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 308fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 309fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 310fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Plug in default device driver functions for transform feedback. 311fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Most drivers will override some/all of these. 312fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 313fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid 314fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_init_transform_feedback_functions(struct dd_function_table *driver) 315fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 316fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->NewTransformFeedback = new_transform_feedback; 317fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->DeleteTransformFeedback = delete_transform_feedback; 318fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->BeginTransformFeedback = begin_transform_feedback; 319fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->EndTransformFeedback = end_transform_feedback; 320fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->PauseTransformFeedback = pause_transform_feedback; 321fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->ResumeTransformFeedback = resume_transform_feedback; 322fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul driver->DrawTransformFeedback = draw_transform_feedback; 323fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 324fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 325fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 326b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wuvoid 327b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu_mesa_init_transform_feedback_dispatch(struct _glapi_table *disp) 328b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu{ 329b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_BeginTransformFeedbackEXT(disp, _mesa_BeginTransformFeedback); 330b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_EndTransformFeedbackEXT(disp, _mesa_EndTransformFeedback); 331b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_BindBufferRangeEXT(disp, _mesa_BindBufferRange); 332b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_BindBufferBaseEXT(disp, _mesa_BindBufferBase); 333b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_BindBufferOffsetEXT(disp, _mesa_BindBufferOffsetEXT); 334b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_TransformFeedbackVaryingsEXT(disp, _mesa_TransformFeedbackVaryings); 335b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu SET_GetTransformFeedbackVaryingEXT(disp, _mesa_GetTransformFeedbackVarying); 336b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu} 337b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 338fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 339fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 340fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ** Begin API functions 341fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul **/ 342fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 343fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 344de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 345de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_BeginTransformFeedback(GLenum mode) 346de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 347fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 348de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 349de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 350fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 351fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 352de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul switch (mode) { 353de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_POINTS: 354de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_LINES: 355de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_TRIANGLES: 356de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* legal */ 357de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul break; 358de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul default: 359de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBeginTransformFeedback(mode)"); 360de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 361de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 362de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 363fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 364de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 365de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBeginTransformFeedback(already active)"); 366de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 367de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 368de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 369fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Active = GL_TRUE; 370de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul ctx->TransformFeedback.Mode = mode; 371fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 372fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.BeginTransformFeedback); 373fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.BeginTransformFeedback(ctx, mode, obj); 374de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 375de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 376de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 377de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 378de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_EndTransformFeedback(void) 379de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 380fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 381de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 382de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 383fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 384fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 385fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj->Active) { 386de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 387de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glEndTransformFeedback(not active)"); 388de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 389de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 390de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 391fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.CurrentObject->Active = GL_FALSE; 392fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 393fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.EndTransformFeedback); 394fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.EndTransformFeedback(ctx, obj); 395de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 396de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 397de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 398de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 399de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Helper used by BindBufferRange() and BindBufferBase(). 400de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 401de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulstatic void 402de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulbind_buffer_range(GLcontext *ctx, GLuint index, 403de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_buffer_object *bufObj, 404de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLintptr offset, GLsizeiptr size) 405de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 406fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj = 407fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->TransformFeedback.CurrentObject; 408fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 409de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* The general binding point */ 410de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_reference_buffer_object(ctx, 411de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul &ctx->TransformFeedback.CurrentBuffer, 412de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj); 413de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 414de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* The per-attribute binding point */ 415de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_reference_buffer_object(ctx, 416fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul &obj->Buffers[index], 417de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj); 418de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 419fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->BufferNames[index] = bufObj->Name; 420de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 421fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Offset[index] = offset; 422fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Size[index] = size; 423de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 424de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 425de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 426de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 427de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Specify a buffer object to receive vertex shader results. Plus, 428de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * specify the starting offset to place the results, and max size. 429de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 430de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 431de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_BindBufferRange(GLenum target, GLuint index, 432de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLuint buffer, GLintptr offset, GLsizeiptr size) 433de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 434fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 435de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_buffer_object *bufObj; 436de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 437de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 438de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (target != GL_TRANSFORM_FEEDBACK_BUFFER) { 439de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferRange(target)"); 440de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 441de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 442de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 443fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 444fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 445fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 446de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 447de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferRange(transform feedback active)"); 448de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 449de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 450de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 451de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) { 452de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(index=%d)", index); 453de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 454de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 455de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 456de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if ((size <= 0) || (size & 0x3)) { 457de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* must be positive and multiple of four */ 4589eca0e2c3e9409b5da49d9a5052d3665e7d45bb1Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferRange(size%d)", (int) size); 459de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 460de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 461de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 462de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (offset & 0x3) { 463de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* must be multiple of four */ 464de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 4659eca0e2c3e9409b5da49d9a5052d3665e7d45bb1Brian Paul "glBindBufferRange(offset=%d)", (int) offset); 466de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 467de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 468de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 469de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj = _mesa_lookup_bufferobj(ctx, buffer); 470de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!bufObj) { 471de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 472de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferRange(invalid buffer=%u)", buffer); 473de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 474de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 475de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 476de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (offset + size >= bufObj->Size) { 477de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 47886af037e6a1643284f87c5e01c3fcb09dd07bf35Eric Anholt "glBindBufferRange(offset + size %d > buffer size %d)", 4799eca0e2c3e9409b5da49d9a5052d3665e7d45bb1Brian Paul (int) (offset + size), (int) (bufObj->Size)); 480de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 481de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 482de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 483de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bind_buffer_range(ctx, index, bufObj, offset, size); 484de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 485de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 486de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 487de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 488de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Specify a buffer object to receive vertex shader results. 489de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * As above, but start at offset = 0. 490de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 491de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 492de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer) 493de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 494fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 495de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_buffer_object *bufObj; 496de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLsizeiptr size; 497fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 498de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 499de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (target != GL_TRANSFORM_FEEDBACK_BUFFER) { 500de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferBase(target)"); 501de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 502de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 503de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 504fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 505fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 506fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 507de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 508de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferRange(transform feedback active)"); 509de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 510de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 511de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 512de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) { 513de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glBindBufferBase(index=%d)", index); 514de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 515de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 516de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 517de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj = _mesa_lookup_bufferobj(ctx, buffer); 518de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!bufObj) { 519de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 520de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferBase(invalid buffer=%u)", buffer); 521de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 522de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 523de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 524de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* default size is the buffer size rounded down to nearest 525de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * multiple of four. 526de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 527de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul size = bufObj->Size & ~0x3; 528de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 529de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bind_buffer_range(ctx, index, bufObj, 0, size); 530de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 531de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 532de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 533de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 534de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Specify a buffer object to receive vertex shader results, plus the 535de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * offset in the buffer to start placing results. 536de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * This function is part of GL_EXT_transform_feedback, but not GL3. 537de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 538de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 539de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_BindBufferOffsetEXT(GLenum target, GLuint index, GLuint buffer, 540de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLintptr offset) 541de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 542fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 543de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_buffer_object *bufObj; 544de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 545de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLsizeiptr size; 546de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 547de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (target != GL_TRANSFORM_FEEDBACK_BUFFER) { 548de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBindBufferOffsetEXT(target)"); 549de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 550de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 551de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 552fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 553fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 554fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 555de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 556de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferRange(transform feedback active)"); 557de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 558de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 559de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 560de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs) { 561de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 562de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferOffsetEXT(index=%d)", index); 563de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 564de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 565de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 566de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bufObj = _mesa_lookup_bufferobj(ctx, buffer); 567de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!bufObj) { 568de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 569de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glBindBufferOffsetEXT(invalid buffer=%u)", buffer); 570de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 571de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 572de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 573de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* default size is the buffer size rounded down to nearest 574de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * multiple of four. 575de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 576de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul size = (bufObj->Size - offset) & ~0x3; 577de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 578de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul bind_buffer_range(ctx, index, bufObj, offset, size); 579de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 580de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 581de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 582de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 583de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * This function specifies the vertex shader outputs to be written 584de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * to the feedback buffer(s), and in what order. 585de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 586de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 587de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_TransformFeedbackVaryings(GLuint program, GLsizei count, 588de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul const GLchar **varyings, GLenum bufferMode) 589de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 590de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_shader_program *shProg; 591de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLuint i; 592de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 593de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 594de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul switch (bufferMode) { 595de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_INTERLEAVED_ATTRIBS: 596de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul break; 597de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul case GL_SEPARATE_ATTRIBS: 598de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul break; 599de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul default: 600de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, 601de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glTransformFeedbackVaryings(bufferMode)"); 602de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 603de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 604de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 605de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (count < 0 || count > ctx->Const.MaxTransformFeedbackSeparateAttribs) { 606de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 607de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glTransformFeedbackVaryings(count=%d)", count); 608de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 609de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 610de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 611de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg = _mesa_lookup_shader_program(ctx, program); 612de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!shProg) { 613de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 614de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glTransformFeedbackVaryings(program=%u)", program); 615de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 616de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 617de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 618de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* free existing varyings, if any */ 619de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul for (i = 0; i < shProg->TransformFeedback.NumVarying; i++) { 620de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul free(shProg->TransformFeedback.VaryingNames[i]); 621de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 622de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul free(shProg->TransformFeedback.VaryingNames); 623de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 624de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* allocate new memory for varying names */ 625de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg->TransformFeedback.VaryingNames = 626de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul (GLchar **) malloc(count * sizeof(GLchar *)); 627de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 628de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!shProg->TransformFeedback.VaryingNames) { 629de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_OUT_OF_MEMORY, "glTransformFeedbackVaryings()"); 630de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 631de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 632de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 633de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* Save the new names and the count */ 634de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul for (i = 0; i < (GLuint) count; i++) { 635de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg->TransformFeedback.VaryingNames[i] = _mesa_strdup(varyings[i]); 636de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 637de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg->TransformFeedback.NumVarying = count; 638de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 639de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg->TransformFeedback.BufferMode = bufferMode; 640de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 641de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* The varyings won't be used until shader link time */ 642de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 643de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 644de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 645de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul/** 646de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * Get info about the vertex shader's outputs which are to be written 647de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul * to the feedback buffer(s). 648de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul */ 649de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paulvoid GLAPIENTRY 650de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul_mesa_GetTransformFeedbackVarying(GLuint program, GLuint index, 651de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLsizei bufSize, GLsizei *length, 652de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLsizei *size, GLenum *type, GLchar *name) 653de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul{ 654de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul const struct gl_shader_program *shProg; 655de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul const GLchar *varyingName; 656de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GLint v; 657de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul GET_CURRENT_CONTEXT(ctx); 658de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 659de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul shProg = _mesa_lookup_shader_program(ctx, program); 660de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (!shProg) { 661de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 662de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glGetTransformFeedbackVaryings(program=%u)", program); 663de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 664de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 665de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 666de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (index >= shProg->TransformFeedback.NumVarying) { 667de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 668de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul "glGetTransformFeedbackVaryings(index=%u)", index); 669de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul return; 670de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 671de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 672de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul varyingName = shProg->TransformFeedback.VaryingNames[index]; 673de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 674de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul v = _mesa_lookup_parameter_index(shProg->Varying, -1, varyingName); 675de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (v >= 0) { 676de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul struct gl_program_parameter *param = &shProg->Varying->Parameters[v]; 677de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 678de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* return the varying's name and length */ 679de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul _mesa_copy_string(name, bufSize, length, varyingName); 680de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 681de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul /* return the datatype and value's size (in datatype units) */ 682de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (type) 6833100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul *type = param->DataType; 684de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul if (size) 685de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul *size = param->Size; 686de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul } 6873100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul else { 6883100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul name[0] = 0; 6893100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul if (length) 6903100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul *length = 0; 6913100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul if (type) 6923100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul *type = 0; 6933100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul if (size) 6943100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul *size = 0; 6953100f31b747a3294e1e7043ed9a61d8b90bf423aBrian Paul } 696de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul} 697de8530e1546733bf21b2e0518d6c5bda560770b9Brian Paul 698fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 699fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 700fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulstatic struct gl_transform_feedback_object * 701fef6e36e0736a68e24d7844bae65a01de8359214Brian Paullookup_transform_feedback_object(GLcontext *ctx, GLuint name) 702fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 703fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (name == 0) { 704fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return ctx->TransformFeedback.DefaultObject; 705fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 706fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul else 707fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return (struct gl_transform_feedback_object *) 708fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_HashLookup(ctx->TransformFeedback.Objects, name); 709fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 710fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 711fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 712fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 713fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Create new transform feedback objects. Transform feedback objects 714fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * encapsulate the state related to transform feedback to allow quickly 715fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * switching state (and drawing the results, below). 716fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 717fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 718fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 719fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_GenTransformFeedbacks(GLsizei n, GLuint *names) 720fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 721fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GLuint first; 722fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 723fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 724fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT_OUTSIDE_BEGIN_END(ctx); 725fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 726fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (n < 0) { 727fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glGenTransformFeedbacks(n < 0)"); 728fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 729fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 730fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 731fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!names) 732fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 733fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 734fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* we don't need contiguous IDs, but this might be faster */ 735fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul first = _mesa_HashFindFreeKeyBlock(ctx->TransformFeedback.Objects, n); 736fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (first) { 737fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GLsizei i; 738fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul for (i = 0; i < n; i++) { 739fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj 740fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul = ctx->Driver.NewTransformFeedback(ctx, first + i); 741fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj) { 742fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks"); 743fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 744fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 745fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul names[i] = first + i; 746fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_HashInsert(ctx->TransformFeedback.Objects, first + i, obj); 747fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 748fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 749fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul else { 750fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenTransformFeedbacks"); 751fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 752fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 753fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 754fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 755fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 756fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Is the given ID a transform feedback object? 757fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 758fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 759fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulGLboolean GLAPIENTRY 760fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_IsTransformFeedback(GLuint name) 761fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 762fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 763fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 764fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); 765fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 766fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (name && lookup_transform_feedback_object(ctx, name)) 767fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return GL_TRUE; 768fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul else 769fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return GL_FALSE; 770fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 771fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 772fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 773fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 774fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Bind the given transform feedback object. 775fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 776fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 777fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 778d74f525060f779cfe449c20853b11ba2bbcdea6dVinson Lee_mesa_BindTransformFeedback(GLenum target, GLuint name) 779fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 780fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 781fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 782fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 783fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (target != GL_TRANSFORM_FEEDBACK) { 784fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, "glBindTransformFeedback(target)"); 785fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 786fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 787fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 788fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (ctx->TransformFeedback.CurrentObject->Active && 789fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul !ctx->TransformFeedback.CurrentObject->Paused) { 790fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 79139c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul "glBindTransformFeedback(transform is active, or not paused)"); 792fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 793fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 794fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 795fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = lookup_transform_feedback_object(ctx, name); 796fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj) { 797fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 798fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul "glBindTransformFeedback(name=%u)", name); 799fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 800fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 801fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 802fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul reference_transform_feedback_object(&ctx->TransformFeedback.CurrentObject, 803fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj); 804fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 805fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 806fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 807fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 808fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Delete the given transform feedback objects. 809fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 810fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 811fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 812fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_DeleteTransformFeedbacks(GLsizei n, const GLuint *names) 813fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 814fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GLint i; 815fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 816fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 817fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ASSERT_OUTSIDE_BEGIN_END(ctx); 818fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 819fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (n < 0) { 820fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, "glDeleteTransformFeedbacks(n < 0)"); 821fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 822fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 823fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 824fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!names) 825fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 826fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 827fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul for (i = 0; i < n; i++) { 828fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (names[i] > 0) { 829fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj 830fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul = lookup_transform_feedback_object(ctx, names[i]); 831fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj) { 832fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (obj->Active) { 833fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 834fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul "glDeleteTransformFeedbacks(object %u is active)", 835fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul names[i]); 836fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 837fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 838fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_HashRemove(ctx->TransformFeedback.Objects, names[i]); 839fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* unref, but object may not be deleted until later */ 840fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul reference_transform_feedback_object(&obj, NULL); 841fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 842fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 843fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 844fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 845fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 846fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 847fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 848fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Pause transform feedback. 849fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 850fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 851fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 852fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_PauseTransformFeedback(void) 853fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 854fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 855fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 856fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 857fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 858fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 859fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj->Active || obj->Paused) { 860fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 861fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul "glPauseTransformFeedback(feedback not active or already paused)"); 862fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 863fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 864fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 865fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Paused = GL_TRUE; 866fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 867fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.PauseTransformFeedback); 868fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.PauseTransformFeedback(ctx, obj); 869fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 870fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 871fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 872fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 873fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Resume transform feedback. 874fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 875fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 876fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 877fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_ResumeTransformFeedback(void) 878fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 879fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj; 880fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 881fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 882fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj = ctx->TransformFeedback.CurrentObject; 883fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 884fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj->Active || !obj->Paused) { 885fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_OPERATION, 88639c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul "glPauseTransformFeedback(feedback not active or not paused)"); 887fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 888fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 889fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 890fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul obj->Paused = GL_FALSE; 891fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 892fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.ResumeTransformFeedback); 893fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.ResumeTransformFeedback(ctx, obj); 894fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 895fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 896fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 897fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/** 898fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Draw the vertex data in a transform feedback object. 899fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * \param mode GL_POINTS, GL_LINES, GL_TRIANGLE_STRIP, etc. 900fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * \param name the transform feedback object 901fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * The number of vertices comes from the transform feedback object. 902fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * User still has to setup of the vertex attribute info with 903fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * glVertexPointer, glColorPointer, etc. 904fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * Part of GL_ARB_transform_feedback2. 905fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 906fef6e36e0736a68e24d7844bae65a01de8359214Brian Paulvoid GLAPIENTRY 907fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul_mesa_DrawTransformFeedback(GLenum mode, GLuint name) 908fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul{ 909fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul GET_CURRENT_CONTEXT(ctx); 910fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul struct gl_transform_feedback_object *obj = 911fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul lookup_transform_feedback_object(ctx, name); 912fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 91339c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul if (mode > GL_POLYGON) { 91439c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul _mesa_error(ctx, GL_INVALID_ENUM, 91539c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul "glDrawTransformFeedback(mode=0x%x)", mode); 91639c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul return; 91739c13a115eb45fb6c711cd86cda3a0c178975b52Brian Paul } 918fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul if (!obj) { 919fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul _mesa_error(ctx, GL_INVALID_VALUE, 920fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul "glDrawTransformFeedback(name = %u)", name); 921fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul return; 922fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul } 923fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 924fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul /* XXX check if EndTransformFeedback has never been called while 925fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul * the object was bound 926fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul */ 927fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 928fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul assert(ctx->Driver.DrawTransformFeedback); 929fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul ctx->Driver.DrawTransformFeedback(ctx, mode, obj); 930fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul} 931fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 932fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 933fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul/* 934fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulXXX misc to do: 935fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 936fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulglGet*() for 937fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul 938fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulGL_TRANSFORM_FEEDBACK_BUFFER_PAUSED 939fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulGL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE 940fef6e36e0736a68e24d7844bae65a01de8359214Brian PaulGL_TRANSFORM_FEEDBACK_BINDING 941fef6e36e0736a68e24d7844bae65a01de8359214Brian Paul*/ 942b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 943b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu 944b093016bd0660cc4ac6142aa8d4d6add5b6bfce8Chia-I Wu#endif /* FEATURE_EXT_transform_feedback */ 945