From a18769801e521ccb5a409c377ac0a6a1141f5776 Mon Sep 17 00:00:00 2001 From: marha Date: Tue, 1 Mar 2011 07:17:23 +0000 Subject: pixman mesa git update 1 Mar 2011 --- mesalib/src/mesa/main/readpix.c | 487 ++++++++++++++++++++-------------------- 1 file changed, 244 insertions(+), 243 deletions(-) (limited to 'mesalib/src/mesa/main/readpix.c') diff --git a/mesalib/src/mesa/main/readpix.c b/mesalib/src/mesa/main/readpix.c index 3f424600c..6e09a52c8 100644 --- a/mesalib/src/mesa/main/readpix.c +++ b/mesalib/src/mesa/main/readpix.c @@ -1,243 +1,244 @@ -/* - * Mesa 3-D graphics library - * Version: 7.1 - * - * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include "glheader.h" -#include "imports.h" -#include "bufferobj.h" -#include "context.h" -#include "enums.h" -#include "readpix.h" -#include "framebuffer.h" -#include "formats.h" -#include "image.h" -#include "mtypes.h" -#include "state.h" - - -/** - * Do error checking of the format/type parameters to glReadPixels and - * glDrawPixels. - * \param drawing if GL_TRUE do checking for DrawPixels, else do checking - * for ReadPixels. - * \return GL_TRUE if error detected, GL_FALSE if no errors - */ -GLboolean -_mesa_error_check_format_type(struct gl_context *ctx, GLenum format, GLenum type, - GLboolean drawing) -{ - const char *readDraw = drawing ? "Draw" : "Read"; - const GLboolean reading = !drawing; - - /* state validation should have already been done */ - ASSERT(ctx->NewState == 0x0); - - if (ctx->Extensions.EXT_packed_depth_stencil - && type == GL_UNSIGNED_INT_24_8_EXT - && format != GL_DEPTH_STENCIL_EXT) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "gl%sPixels(format is not GL_DEPTH_STENCIL_EXT)", readDraw); - return GL_TRUE; - } - - /* basic combinations test */ - if (!_mesa_is_legal_format_and_type(ctx, format, type)) { - _mesa_error(ctx, GL_INVALID_ENUM, - "gl%sPixels(format or type)", readDraw); - return GL_TRUE; - } - - /* additional checks */ - switch (format) { - case GL_RG: - case GL_RED: - case GL_GREEN: - case GL_BLUE: - case GL_ALPHA: - case GL_LUMINANCE: - case GL_LUMINANCE_ALPHA: - case GL_RGB: - case GL_BGR: - case GL_RGBA: - case GL_BGRA: - case GL_ABGR_EXT: - case GL_RED_INTEGER_EXT: - case GL_GREEN_INTEGER_EXT: - case GL_BLUE_INTEGER_EXT: - case GL_ALPHA_INTEGER_EXT: - case GL_RGB_INTEGER_EXT: - case GL_RGBA_INTEGER_EXT: - case GL_BGR_INTEGER_EXT: - case GL_BGRA_INTEGER_EXT: - case GL_LUMINANCE_INTEGER_EXT: - case GL_LUMINANCE_ALPHA_INTEGER_EXT: - if (!drawing) { - /* reading */ - if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glReadPixels(no color buffer)"); - return GL_TRUE; - } - } - break; - case GL_COLOR_INDEX: - if (drawing) { - if (ctx->PixelMaps.ItoR.Size == 0 || - ctx->PixelMaps.ItoG.Size == 0 || - ctx->PixelMaps.ItoB.Size == 0) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glDrawPixels(drawing color index pixels into RGB buffer)"); - return GL_TRUE; - } - } - else { - /* reading */ - if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glReadPixels(no color buffer)"); - return GL_TRUE; - } - /* We no longer support CI-mode color buffers so trying to read - * GL_COLOR_INDEX pixels is always an error. - */ - _mesa_error(ctx, GL_INVALID_OPERATION, - "glReadPixels(color buffer is RGB)"); - return GL_TRUE; - } - break; - case GL_STENCIL_INDEX: - if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) || - (reading && !_mesa_source_buffer_exists(ctx, format))) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "gl%sPixels(no stencil buffer)", readDraw); - return GL_TRUE; - } - break; - case GL_DEPTH_COMPONENT: - if ((drawing && !_mesa_dest_buffer_exists(ctx, format))) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "gl%sPixels(no depth buffer)", readDraw); - return GL_TRUE; - } - break; - case GL_DEPTH_STENCIL_EXT: - if (!ctx->Extensions.EXT_packed_depth_stencil || - type != GL_UNSIGNED_INT_24_8_EXT) { - _mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw); - return GL_TRUE; - } - if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) || - (reading && !_mesa_source_buffer_exists(ctx, format))) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "gl%sPixels(no depth or stencil buffer)", readDraw); - return GL_TRUE; - } - break; - default: - /* this should have been caught in _mesa_is_legal_format_type() */ - _mesa_problem(ctx, "unexpected format in _mesa_%sPixels", readDraw); - return GL_TRUE; - } - - /* no errors */ - return GL_FALSE; -} - - - -void GLAPIENTRY -_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height, - GLenum format, GLenum type, GLvoid *pixels ) -{ - GET_CURRENT_CONTEXT(ctx); - ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); - - FLUSH_CURRENT(ctx, 0); - - if (MESA_VERBOSE & VERBOSE_API) - _mesa_debug(ctx, "glReadPixels(%d, %d, %s, %s, %p)\n", - width, height, - _mesa_lookup_enum_by_nr(format), - _mesa_lookup_enum_by_nr(type), - pixels); - - if (width < 0 || height < 0) { - _mesa_error( ctx, GL_INVALID_VALUE, - "glReadPixels(width=%d height=%d)", width, height ); - return; - } - - if (ctx->NewState) - _mesa_update_state(ctx); - - if (_mesa_error_check_format_type(ctx, format, type, GL_FALSE)) { - /* found an error */ - return; - } - - /* Check that the destination format and source buffer are both - * integer-valued or both non-integer-valued. - */ - if (ctx->Extensions.EXT_texture_integer && _mesa_is_color_format(format)) { - const struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer; - const GLboolean srcInteger = _mesa_is_format_integer_color(rb->Format); - const GLboolean dstInteger = _mesa_is_integer_format(format); - if (dstInteger != srcInteger) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glReadPixels(integer / non-integer format mismatch"); - return; - } - } - - if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { - _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, - "glReadPixels(incomplete framebuffer)" ); - return; - } - - if (!_mesa_source_buffer_exists(ctx, format)) { - _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(no readbuffer)"); - return; - } - - if (width == 0 || height == 0) - return; /* nothing to do */ - - if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { - if (!_mesa_validate_pbo_access(2, &ctx->Pack, width, height, 1, - format, type, pixels)) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glReadPixels(invalid PBO access)"); - return; - } - - if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) { - /* buffer is mapped - that's an error */ - _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)"); - return; - } - } - - ctx->Driver.ReadPixels(ctx, x, y, width, height, - format, type, &ctx->Pack, pixels); -} +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include "glheader.h" +#include "imports.h" +#include "bufferobj.h" +#include "context.h" +#include "enums.h" +#include "readpix.h" +#include "framebuffer.h" +#include "formats.h" +#include "image.h" +#include "mtypes.h" +#include "pbo.h" +#include "state.h" + + +/** + * Do error checking of the format/type parameters to glReadPixels and + * glDrawPixels. + * \param drawing if GL_TRUE do checking for DrawPixels, else do checking + * for ReadPixels. + * \return GL_TRUE if error detected, GL_FALSE if no errors + */ +GLboolean +_mesa_error_check_format_type(struct gl_context *ctx, GLenum format, GLenum type, + GLboolean drawing) +{ + const char *readDraw = drawing ? "Draw" : "Read"; + const GLboolean reading = !drawing; + + /* state validation should have already been done */ + ASSERT(ctx->NewState == 0x0); + + if (ctx->Extensions.EXT_packed_depth_stencil + && type == GL_UNSIGNED_INT_24_8_EXT + && format != GL_DEPTH_STENCIL_EXT) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "gl%sPixels(format is not GL_DEPTH_STENCIL_EXT)", readDraw); + return GL_TRUE; + } + + /* basic combinations test */ + if (!_mesa_is_legal_format_and_type(ctx, format, type)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "gl%sPixels(format or type)", readDraw); + return GL_TRUE; + } + + /* additional checks */ + switch (format) { + case GL_RG: + case GL_RED: + case GL_GREEN: + case GL_BLUE: + case GL_ALPHA: + case GL_LUMINANCE: + case GL_LUMINANCE_ALPHA: + case GL_RGB: + case GL_BGR: + case GL_RGBA: + case GL_BGRA: + case GL_ABGR_EXT: + case GL_RED_INTEGER_EXT: + case GL_GREEN_INTEGER_EXT: + case GL_BLUE_INTEGER_EXT: + case GL_ALPHA_INTEGER_EXT: + case GL_RGB_INTEGER_EXT: + case GL_RGBA_INTEGER_EXT: + case GL_BGR_INTEGER_EXT: + case GL_BGRA_INTEGER_EXT: + case GL_LUMINANCE_INTEGER_EXT: + case GL_LUMINANCE_ALPHA_INTEGER_EXT: + if (!drawing) { + /* reading */ + if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glReadPixels(no color buffer)"); + return GL_TRUE; + } + } + break; + case GL_COLOR_INDEX: + if (drawing) { + if (ctx->PixelMaps.ItoR.Size == 0 || + ctx->PixelMaps.ItoG.Size == 0 || + ctx->PixelMaps.ItoB.Size == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glDrawPixels(drawing color index pixels into RGB buffer)"); + return GL_TRUE; + } + } + else { + /* reading */ + if (!_mesa_source_buffer_exists(ctx, GL_COLOR)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glReadPixels(no color buffer)"); + return GL_TRUE; + } + /* We no longer support CI-mode color buffers so trying to read + * GL_COLOR_INDEX pixels is always an error. + */ + _mesa_error(ctx, GL_INVALID_OPERATION, + "glReadPixels(color buffer is RGB)"); + return GL_TRUE; + } + break; + case GL_STENCIL_INDEX: + if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) || + (reading && !_mesa_source_buffer_exists(ctx, format))) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "gl%sPixels(no stencil buffer)", readDraw); + return GL_TRUE; + } + break; + case GL_DEPTH_COMPONENT: + if ((drawing && !_mesa_dest_buffer_exists(ctx, format))) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "gl%sPixels(no depth buffer)", readDraw); + return GL_TRUE; + } + break; + case GL_DEPTH_STENCIL_EXT: + if (!ctx->Extensions.EXT_packed_depth_stencil || + type != GL_UNSIGNED_INT_24_8_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, "gl%sPixels(type)", readDraw); + return GL_TRUE; + } + if ((drawing && !_mesa_dest_buffer_exists(ctx, format)) || + (reading && !_mesa_source_buffer_exists(ctx, format))) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "gl%sPixels(no depth or stencil buffer)", readDraw); + return GL_TRUE; + } + break; + default: + /* this should have been caught in _mesa_is_legal_format_type() */ + _mesa_problem(ctx, "unexpected format in _mesa_%sPixels", readDraw); + return GL_TRUE; + } + + /* no errors */ + return GL_FALSE; +} + + + +void GLAPIENTRY +_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, GLvoid *pixels ) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); + + FLUSH_CURRENT(ctx, 0); + + if (MESA_VERBOSE & VERBOSE_API) + _mesa_debug(ctx, "glReadPixels(%d, %d, %s, %s, %p)\n", + width, height, + _mesa_lookup_enum_by_nr(format), + _mesa_lookup_enum_by_nr(type), + pixels); + + if (width < 0 || height < 0) { + _mesa_error( ctx, GL_INVALID_VALUE, + "glReadPixels(width=%d height=%d)", width, height ); + return; + } + + if (ctx->NewState) + _mesa_update_state(ctx); + + if (_mesa_error_check_format_type(ctx, format, type, GL_FALSE)) { + /* found an error */ + return; + } + + /* Check that the destination format and source buffer are both + * integer-valued or both non-integer-valued. + */ + if (ctx->Extensions.EXT_texture_integer && _mesa_is_color_format(format)) { + const struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer; + const GLboolean srcInteger = _mesa_is_format_integer_color(rb->Format); + const GLboolean dstInteger = _mesa_is_integer_format(format); + if (dstInteger != srcInteger) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glReadPixels(integer / non-integer format mismatch"); + return; + } + } + + if (ctx->ReadBuffer->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { + _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, + "glReadPixels(incomplete framebuffer)" ); + return; + } + + if (!_mesa_source_buffer_exists(ctx, format)) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(no readbuffer)"); + return; + } + + if (width == 0 || height == 0) + return; /* nothing to do */ + + if (_mesa_is_bufferobj(ctx->Pack.BufferObj)) { + if (!_mesa_validate_pbo_access(2, &ctx->Pack, width, height, 1, + format, type, pixels)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glReadPixels(invalid PBO access)"); + return; + } + + if (_mesa_bufferobj_mapped(ctx->Pack.BufferObj)) { + /* buffer is mapped - that's an error */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glReadPixels(PBO is mapped)"); + return; + } + } + + ctx->Driver.ReadPixels(ctx, x, y, width, height, + format, type, &ctx->Pack, pixels); +} -- cgit v1.2.3