xm_buffer.c revision e4b2356c07d31fbeeabb13b2fb47db703b473080
1e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul/* 2e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * Mesa 3-D graphics library 3e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * Version: 6.3 4e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * 5e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. 6e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * 7e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * Permission is hereby granted, free of charge, to any person obtaining a 8e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * copy of this software and associated documentation files (the "Software"), 9e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * to deal in the Software without restriction, including without limitation 10e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * and/or sell copies of the Software, and to permit persons to whom the 12e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * Software is furnished to do so, subject to the following conditions: 13e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * 14e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * The above copyright notice and this permission notice shall be included 15e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * in all copies or substantial portions of the Software. 16e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * 17e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 18e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 21e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul */ 24e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 25e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 26e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul#include "glxheader.h" 27e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul#include "GL/xmesa.h" 28e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul#include "xmesaP.h" 29e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul#include "imports.h" 30e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul#include "renderbuffer.h" 31e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 32e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 33e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paulstatic void 34e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paulxmesa_delete_renderbuffer(struct gl_renderbuffer *rb) 35e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul{ 36e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul /* XXX this routine should really delete the attached ximage, etc. */ 37e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul} 38e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 39e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 40e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul/** 41e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * Reallocate renderbuffer storage. 42e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * This is called when the window's resized. It'll get called once for 43e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul * the front color renderbuffer and again for the back color renderbuffer. 44e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul */ 45e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paulstatic GLboolean 46e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paulxmesa_alloc_storage(GLcontext *ctx, struct gl_renderbuffer *rb, 47e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul GLenum internalFormat, GLuint width, GLuint height) 48e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul{ 49e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul struct xmesa_renderbuffer *xrb = (struct xmesa_renderbuffer *) rb; 50e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 51e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul if (xrb->ximage) { 52e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul /* Needed by PIXELADDR1 macro */ 53e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->width1 = xrb->ximage->bytes_per_line; 54e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->origin1 = (GLubyte *) xrb->ximage->data + xrb->width1 * (height - 1); 55e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 56e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul /* Needed by PIXELADDR2 macro */ 57e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->width2 = xrb->ximage->bytes_per_line / 2; 58e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->origin2 = (GLushort *) xrb->ximage->data + xrb->width2 * (height - 1); 59e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 60e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul /* Needed by PIXELADDR3 macro */ 61e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->width3 = xrb->ximage->bytes_per_line; 62e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->origin3 = (GLubyte *) xrb->ximage->data + xrb->width3 * (height - 1); 63e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 64e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul /* Needed by PIXELADDR4 macro */ 65e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->width4 = xrb->ximage->width; 66e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->origin4 = (GLuint *) xrb->ximage->data + xrb->width4 * (height - 1); 67e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul } 68e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul else { 69e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul assert(xrb->pixmap); 70e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul } 71e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 72e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul /* for the FLIP macro: */ 73e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->bottom = height - 1; 74e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 75e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul rb->Width = width; 76e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul rb->Height = height; 77e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul rb->InternalFormat = internalFormat; 78e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 79e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul return GL_TRUE; 80e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul} 81e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 82e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 83e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paulstruct xmesa_renderbuffer * 84e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paulxmesa_new_renderbuffer(GLcontext *ctx, GLuint name, GLboolean rgbMode) 85e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul{ 86e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul struct xmesa_renderbuffer *xrb = CALLOC_STRUCT(xmesa_renderbuffer); 87e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul if (xrb) { 88e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul GLuint name = 0; 89e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul _mesa_init_renderbuffer(&xrb->Base, name); 90e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 91e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->Base.Delete = xmesa_delete_renderbuffer; 92e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->Base.AllocStorage = xmesa_alloc_storage; 93e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 94e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul if (rgbMode) { 95e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->Base.InternalFormat = GL_RGBA; 96e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->Base._BaseFormat = GL_RGBA; 97e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->Base.DataType = GL_UNSIGNED_BYTE; 98e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul } 99e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul else { 100e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->Base.InternalFormat = GL_COLOR_INDEX; 101e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->Base._BaseFormat = GL_COLOR_INDEX; 102e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->Base.DataType = GL_UNSIGNED_INT; 103e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul } 104e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul xrb->Base.ComponentSizes[0] = 0; /* XXX fix? */ 105e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul } 106e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul return xrb; 107e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul} 108e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 109e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 110e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 111e4b2356c07d31fbeeabb13b2fb47db703b473080Brian Paul 112