From cda19b1d226d565f1ca4327aeae827c621b3dfd6 Mon Sep 17 00:00:00 2001 From: marha Date: Fri, 3 Jun 2011 08:18:04 +0200 Subject: xserver xkeyboard-config mesa git update 3 Jun 2011 --- mesalib/src/mesa/main/api_validate.c | 909 ++++++++++++++++++----------------- 1 file changed, 455 insertions(+), 454 deletions(-) (limited to 'mesalib/src/mesa/main/api_validate.c') diff --git a/mesalib/src/mesa/main/api_validate.c b/mesalib/src/mesa/main/api_validate.c index 5916af9f7..2981d4229 100644 --- a/mesalib/src/mesa/main/api_validate.c +++ b/mesalib/src/mesa/main/api_validate.c @@ -1,454 +1,455 @@ -/* - * Mesa 3-D graphics library - * Version: 7.1 - * - * Copyright (C) 1999-2007 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 "api_validate.h" -#include "bufferobj.h" -#include "context.h" -#include "imports.h" -#include "mfeatures.h" -#include "mtypes.h" -#include "vbo/vbo.h" - - -/** - * \return number of bytes in array [count] of type. - */ -static GLsizei -index_bytes(GLenum type, GLsizei count) -{ - if (type == GL_UNSIGNED_INT) { - return count * sizeof(GLuint); - } - else if (type == GL_UNSIGNED_BYTE) { - return count * sizeof(GLubyte); - } - else { - ASSERT(type == GL_UNSIGNED_SHORT); - return count * sizeof(GLushort); - } -} - - -/** - * Find the max index in the given element/index buffer - */ -GLuint -_mesa_max_buffer_index(struct gl_context *ctx, GLuint count, GLenum type, - const void *indices, - struct gl_buffer_object *elementBuf) -{ - const GLubyte *map = NULL; - GLuint max = 0; - GLuint i; - - if (_mesa_is_bufferobj(elementBuf)) { - /* elements are in a user-defined buffer object. need to map it */ - map = ctx->Driver.MapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER, - GL_READ_ONLY, elementBuf); - /* Actual address is the sum of pointers */ - indices = (const GLvoid *) ADD_POINTERS(map, (const GLubyte *) indices); - } - - if (type == GL_UNSIGNED_INT) { - for (i = 0; i < count; i++) - if (((GLuint *) indices)[i] > max) - max = ((GLuint *) indices)[i]; - } - else if (type == GL_UNSIGNED_SHORT) { - for (i = 0; i < count; i++) - if (((GLushort *) indices)[i] > max) - max = ((GLushort *) indices)[i]; - } - else { - ASSERT(type == GL_UNSIGNED_BYTE); - for (i = 0; i < count; i++) - if (((GLubyte *) indices)[i] > max) - max = ((GLubyte *) indices)[i]; - } - - if (map) { - ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, elementBuf); - } - - return max; -} - - -/** - * Check if OK to draw arrays/elements. - */ -static GLboolean -check_valid_to_render(struct gl_context *ctx, const char *function) -{ - if (!_mesa_valid_to_render(ctx, function)) { - return GL_FALSE; - } - - switch (ctx->API) { -#if FEATURE_es2_glsl - case API_OPENGLES2: - /* For ES2, we can draw if any vertex array is enabled (and we - * should always have a vertex program/shader). */ - if (ctx->Array.ArrayObj->_Enabled == 0x0 || !ctx->VertexProgram._Current) - return GL_FALSE; - break; -#endif - -#if FEATURE_ES1 - case API_OPENGLES: - /* For OpenGL ES, only draw if we have vertex positions - */ - if (!ctx->Array.ArrayObj->Vertex.Enabled) - return GL_FALSE; - break; -#endif - -#if FEATURE_GL - case API_OPENGL: - { - const struct gl_shader_program *vsProg = - ctx->Shader.CurrentVertexProgram; - GLboolean haveVertexShader = (vsProg && vsProg->LinkStatus); - GLboolean haveVertexProgram = ctx->VertexProgram._Enabled; - if (haveVertexShader || haveVertexProgram) { - /* Draw regardless of whether or not we have any vertex arrays. - * (Ex: could draw a point using a constant vertex pos) - */ - return GL_TRUE; - } - else { - /* Draw if we have vertex positions (GL_VERTEX_ARRAY or generic - * array [0]). - */ - return (ctx->Array.ArrayObj->Vertex.Enabled || - ctx->Array.ArrayObj->VertexAttrib[0].Enabled); - } - } - break; -#endif - - default: - ASSERT_NO_FEATURE(); - } - - return GL_TRUE; -} - - -/** - * Do bounds checking on array element indexes. Check that the vertices - * pointed to by the indices don't lie outside buffer object bounds. - * \return GL_TRUE if OK, GL_FALSE if any indexed vertex goes is out of bounds - */ -static GLboolean -check_index_bounds(struct gl_context *ctx, GLsizei count, GLenum type, - const GLvoid *indices, GLint basevertex) -{ - struct _mesa_prim prim; - struct _mesa_index_buffer ib; - GLuint min, max; - - /* Only the X Server needs to do this -- otherwise, accessing outside - * array/BO bounds allows application termination. - */ - if (!ctx->Const.CheckArrayBounds) - return GL_TRUE; - - memset(&prim, 0, sizeof(prim)); - prim.count = count; - - memset(&ib, 0, sizeof(ib)); - ib.type = type; - ib.ptr = indices; - ib.obj = ctx->Array.ElementArrayBufferObj; - - vbo_get_minmax_index(ctx, &prim, &ib, &min, &max); - - if ((int)(min + basevertex) < 0 || - max + basevertex > ctx->Array.ArrayObj->_MaxElement) { - /* the max element is out of bounds of one or more enabled arrays */ - _mesa_warning(ctx, "glDrawElements() index=%u is out of bounds (max=%u)", - max, ctx->Array.ArrayObj->_MaxElement); - return GL_FALSE; - } - - return GL_TRUE; -} - - -/** - * Error checking for glDrawElements(). Includes parameter checking - * and VBO bounds checking. - * \return GL_TRUE if OK to render, GL_FALSE if error found - */ -GLboolean -_mesa_validate_DrawElements(struct gl_context *ctx, - GLenum mode, GLsizei count, GLenum type, - const GLvoid *indices, GLint basevertex) -{ - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); - - if (count <= 0) { - if (count < 0) - _mesa_error(ctx, GL_INVALID_VALUE, "glDrawElements(count)" ); - return GL_FALSE; - } - - if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { - _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(mode)" ); - return GL_FALSE; - } - - if (type != GL_UNSIGNED_INT && - type != GL_UNSIGNED_BYTE && - type != GL_UNSIGNED_SHORT) - { - _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(type)" ); - return GL_FALSE; - } - - if (!check_valid_to_render(ctx, "glDrawElements")) - return GL_FALSE; - - /* Vertex buffer object tests */ - if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) { - /* use indices in the buffer object */ - /* make sure count doesn't go outside buffer bounds */ - if (index_bytes(type, count) > ctx->Array.ElementArrayBufferObj->Size) { - _mesa_warning(ctx, "glDrawElements index out of buffer bounds"); - return GL_FALSE; - } - } - else { - /* not using a VBO */ - if (!indices) - return GL_FALSE; - } - - if (!check_index_bounds(ctx, count, type, indices, basevertex)) - return GL_FALSE; - - return GL_TRUE; -} - - -/** - * Error checking for glDrawRangeElements(). Includes parameter checking - * and VBO bounds checking. - * \return GL_TRUE if OK to render, GL_FALSE if error found - */ -GLboolean -_mesa_validate_DrawRangeElements(struct gl_context *ctx, GLenum mode, - GLuint start, GLuint end, - GLsizei count, GLenum type, - const GLvoid *indices, GLint basevertex) -{ - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); - - if (count <= 0) { - if (count < 0) - _mesa_error(ctx, GL_INVALID_VALUE, "glDrawRangeElements(count)" ); - return GL_FALSE; - } - - if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { - _mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(mode)" ); - return GL_FALSE; - } - - if (end < start) { - _mesa_error(ctx, GL_INVALID_VALUE, "glDrawRangeElements(endArray.ElementArrayBufferObj)) { - /* use indices in the buffer object */ - /* make sure count doesn't go outside buffer bounds */ - if (index_bytes(type, count) > ctx->Array.ElementArrayBufferObj->Size) { - _mesa_warning(ctx, "glDrawRangeElements index out of buffer bounds"); - return GL_FALSE; - } - } - else { - /* not using a VBO */ - if (!indices) - return GL_FALSE; - } - - if (!check_index_bounds(ctx, count, type, indices, basevertex)) - return GL_FALSE; - - return GL_TRUE; -} - - -/** - * Called from the tnl module to error check the function parameters and - * verify that we really can draw something. - * \return GL_TRUE if OK to render, GL_FALSE if error found - */ -GLboolean -_mesa_validate_DrawArrays(struct gl_context *ctx, - GLenum mode, GLint start, GLsizei count) -{ - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); - - if (count <= 0) { - if (count < 0) - _mesa_error(ctx, GL_INVALID_VALUE, "glDrawArrays(count)" ); - return GL_FALSE; - } - - if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { - _mesa_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" ); - return GL_FALSE; - } - - if (!check_valid_to_render(ctx, "glDrawArrays")) - return GL_FALSE; - - if (ctx->Const.CheckArrayBounds) { - if (start + count > (GLint) ctx->Array.ArrayObj->_MaxElement) - return GL_FALSE; - } - - return GL_TRUE; -} - - -GLboolean -_mesa_validate_DrawArraysInstanced(struct gl_context *ctx, GLenum mode, GLint first, - GLsizei count, GLsizei numInstances) -{ - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); - - if (count <= 0) { - if (count < 0) - _mesa_error(ctx, GL_INVALID_VALUE, - "glDrawArraysInstanced(count=%d)", count); - return GL_FALSE; - } - - if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glDrawArraysInstanced(mode=0x%x)", mode); - return GL_FALSE; - } - - if (numInstances <= 0) { - if (numInstances < 0) - _mesa_error(ctx, GL_INVALID_VALUE, - "glDrawArraysInstanced(numInstances=%d)", numInstances); - return GL_FALSE; - } - - if (!check_valid_to_render(ctx, "glDrawArraysInstanced(invalid to render)")) - return GL_FALSE; - - if (ctx->CompileFlag) { - _mesa_error(ctx, GL_INVALID_OPERATION, - "glDrawArraysInstanced(display list"); - return GL_FALSE; - } - - if (ctx->Const.CheckArrayBounds) { - if (first + count > (GLint) ctx->Array.ArrayObj->_MaxElement) - return GL_FALSE; - } - - return GL_TRUE; -} - - -GLboolean -_mesa_validate_DrawElementsInstanced(struct gl_context *ctx, - GLenum mode, GLsizei count, GLenum type, - const GLvoid *indices, GLsizei numInstances) -{ - ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); - - if (count <= 0) { - if (count < 0) - _mesa_error(ctx, GL_INVALID_VALUE, - "glDrawElementsInstanced(count=%d)", count); - return GL_FALSE; - } - - if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glDrawElementsInstanced(mode = 0x%x)", mode); - return GL_FALSE; - } - - if (type != GL_UNSIGNED_INT && - type != GL_UNSIGNED_BYTE && - type != GL_UNSIGNED_SHORT) { - _mesa_error(ctx, GL_INVALID_ENUM, - "glDrawElementsInstanced(type=0x%x)", type); - return GL_FALSE; - } - - if (numInstances <= 0) { - if (numInstances < 0) - _mesa_error(ctx, GL_INVALID_VALUE, - "glDrawElementsInstanced(numInstances=%d)", numInstances); - return GL_FALSE; - } - - if (!check_valid_to_render(ctx, "glDrawElementsInstanced")) - return GL_FALSE; - - /* Vertex buffer object tests */ - if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) { - /* use indices in the buffer object */ - /* make sure count doesn't go outside buffer bounds */ - if (index_bytes(type, count) > ctx->Array.ElementArrayBufferObj->Size) { - _mesa_warning(ctx, - "glDrawElementsInstanced index out of buffer bounds"); - return GL_FALSE; - } - } - else { - /* not using a VBO */ - if (!indices) - return GL_FALSE; - } - - if (!check_index_bounds(ctx, count, type, indices, 0)) - return GL_FALSE; - - return GL_TRUE; -} +/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2007 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 "api_validate.h" +#include "bufferobj.h" +#include "context.h" +#include "imports.h" +#include "mfeatures.h" +#include "mtypes.h" +#include "vbo/vbo.h" + + +/** + * \return number of bytes in array [count] of type. + */ +static GLsizei +index_bytes(GLenum type, GLsizei count) +{ + if (type == GL_UNSIGNED_INT) { + return count * sizeof(GLuint); + } + else if (type == GL_UNSIGNED_BYTE) { + return count * sizeof(GLubyte); + } + else { + ASSERT(type == GL_UNSIGNED_SHORT); + return count * sizeof(GLushort); + } +} + + +/** + * Find the max index in the given element/index buffer + */ +GLuint +_mesa_max_buffer_index(struct gl_context *ctx, GLuint count, GLenum type, + const void *indices, + struct gl_buffer_object *elementBuf) +{ + const GLubyte *map = NULL; + GLuint max = 0; + GLuint i; + + if (_mesa_is_bufferobj(elementBuf)) { + /* elements are in a user-defined buffer object. need to map it */ + map = ctx->Driver.MapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER, + GL_READ_ONLY, elementBuf); + /* Actual address is the sum of pointers */ + indices = (const GLvoid *) ADD_POINTERS(map, (const GLubyte *) indices); + } + + if (type == GL_UNSIGNED_INT) { + for (i = 0; i < count; i++) + if (((GLuint *) indices)[i] > max) + max = ((GLuint *) indices)[i]; + } + else if (type == GL_UNSIGNED_SHORT) { + for (i = 0; i < count; i++) + if (((GLushort *) indices)[i] > max) + max = ((GLushort *) indices)[i]; + } + else { + ASSERT(type == GL_UNSIGNED_BYTE); + for (i = 0; i < count; i++) + if (((GLubyte *) indices)[i] > max) + max = ((GLubyte *) indices)[i]; + } + + if (map) { + ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, elementBuf); + } + + return max; +} + + +/** + * Check if OK to draw arrays/elements. + */ +static GLboolean +check_valid_to_render(struct gl_context *ctx, const char *function) +{ + if (!_mesa_valid_to_render(ctx, function)) { + return GL_FALSE; + } + + switch (ctx->API) { +#if FEATURE_es2_glsl + case API_OPENGLES2: + /* For ES2, we can draw if any vertex array is enabled (and we + * should always have a vertex program/shader). */ + if (ctx->Array.ArrayObj->_Enabled == 0x0 || !ctx->VertexProgram._Current) + return GL_FALSE; + break; +#endif + +#if FEATURE_ES1 + case API_OPENGLES: + /* For OpenGL ES, only draw if we have vertex positions + */ + if (!ctx->Array.ArrayObj->Vertex.Enabled) + return GL_FALSE; + break; +#endif + +#if FEATURE_GL + case API_OPENGL: + { + const struct gl_shader_program *vsProg = + ctx->Shader.CurrentVertexProgram; + GLboolean haveVertexShader = (vsProg && vsProg->LinkStatus); + GLboolean haveVertexProgram = ctx->VertexProgram._Enabled; + if (haveVertexShader || haveVertexProgram) { + /* Draw regardless of whether or not we have any vertex arrays. + * (Ex: could draw a point using a constant vertex pos) + */ + return GL_TRUE; + } + else { + /* Draw if we have vertex positions (GL_VERTEX_ARRAY or generic + * array [0]). + */ + return (ctx->Array.ArrayObj->Vertex.Enabled || + ctx->Array.ArrayObj->VertexAttrib[0].Enabled); + } + } + break; +#endif + + default: + ASSERT_NO_FEATURE(); + } + + return GL_TRUE; +} + + +/** + * Do bounds checking on array element indexes. Check that the vertices + * pointed to by the indices don't lie outside buffer object bounds. + * \return GL_TRUE if OK, GL_FALSE if any indexed vertex goes is out of bounds + */ +static GLboolean +check_index_bounds(struct gl_context *ctx, GLsizei count, GLenum type, + const GLvoid *indices, GLint basevertex) +{ + struct _mesa_prim prim; + struct _mesa_index_buffer ib; + GLuint min, max; + + /* Only the X Server needs to do this -- otherwise, accessing outside + * array/BO bounds allows application termination. + */ + if (!ctx->Const.CheckArrayBounds) + return GL_TRUE; + + memset(&prim, 0, sizeof(prim)); + prim.count = count; + + memset(&ib, 0, sizeof(ib)); + ib.type = type; + ib.ptr = indices; + ib.obj = ctx->Array.ElementArrayBufferObj; + + vbo_get_minmax_index(ctx, &prim, &ib, &min, &max); + + if ((int)(min + basevertex) < 0 || + max + basevertex > ctx->Array.ArrayObj->_MaxElement) { + /* the max element is out of bounds of one or more enabled arrays */ + _mesa_warning(ctx, "glDrawElements() index=%u is out of bounds (max=%u)", + max, ctx->Array.ArrayObj->_MaxElement); + return GL_FALSE; + } + + return GL_TRUE; +} + + +/** + * Error checking for glDrawElements(). Includes parameter checking + * and VBO bounds checking. + * \return GL_TRUE if OK to render, GL_FALSE if error found + */ +GLboolean +_mesa_validate_DrawElements(struct gl_context *ctx, + GLenum mode, GLsizei count, GLenum type, + const GLvoid *indices, GLint basevertex) +{ + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + + if (count <= 0) { + if (count < 0) + _mesa_error(ctx, GL_INVALID_VALUE, "glDrawElements(count)" ); + return GL_FALSE; + } + + if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { + _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(mode)" ); + return GL_FALSE; + } + + if (type != GL_UNSIGNED_INT && + type != GL_UNSIGNED_BYTE && + type != GL_UNSIGNED_SHORT) + { + _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(type)" ); + return GL_FALSE; + } + + if (!check_valid_to_render(ctx, "glDrawElements")) + return GL_FALSE; + + /* Vertex buffer object tests */ + if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) { + /* use indices in the buffer object */ + /* make sure count doesn't go outside buffer bounds */ + if (index_bytes(type, count) > ctx->Array.ElementArrayBufferObj->Size) { + _mesa_warning(ctx, "glDrawElements index out of buffer bounds"); + return GL_FALSE; + } + } + else { + /* not using a VBO */ + if (!indices) + return GL_FALSE; + } + + if (!check_index_bounds(ctx, count, type, indices, basevertex)) + return GL_FALSE; + + return GL_TRUE; +} + + +/** + * Error checking for glDrawRangeElements(). Includes parameter checking + * and VBO bounds checking. + * \return GL_TRUE if OK to render, GL_FALSE if error found + */ +GLboolean +_mesa_validate_DrawRangeElements(struct gl_context *ctx, GLenum mode, + GLuint start, GLuint end, + GLsizei count, GLenum type, + const GLvoid *indices, GLint basevertex) +{ + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + + if (count <= 0) { + if (count < 0) + _mesa_error(ctx, GL_INVALID_VALUE, "glDrawRangeElements(count)" ); + return GL_FALSE; + } + + if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { + _mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(mode)" ); + return GL_FALSE; + } + + if (end < start) { + _mesa_error(ctx, GL_INVALID_VALUE, "glDrawRangeElements(endArray.ElementArrayBufferObj)) { + /* use indices in the buffer object */ + /* make sure count doesn't go outside buffer bounds */ + if (index_bytes(type, count) > ctx->Array.ElementArrayBufferObj->Size) { + _mesa_warning(ctx, "glDrawRangeElements index out of buffer bounds"); + return GL_FALSE; + } + } + else { + /* not using a VBO */ + if (!indices) + return GL_FALSE; + } + + if (!check_index_bounds(ctx, count, type, indices, basevertex)) + return GL_FALSE; + + return GL_TRUE; +} + + +/** + * Called from the tnl module to error check the function parameters and + * verify that we really can draw something. + * \return GL_TRUE if OK to render, GL_FALSE if error found + */ +GLboolean +_mesa_validate_DrawArrays(struct gl_context *ctx, + GLenum mode, GLint start, GLsizei count) +{ + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + + if (count <= 0) { + if (count < 0) + _mesa_error(ctx, GL_INVALID_VALUE, "glDrawArrays(count)" ); + return GL_FALSE; + } + + if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { + _mesa_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" ); + return GL_FALSE; + } + + if (!check_valid_to_render(ctx, "glDrawArrays")) + return GL_FALSE; + + if (ctx->Const.CheckArrayBounds) { + if (start + count > (GLint) ctx->Array.ArrayObj->_MaxElement) + return GL_FALSE; + } + + return GL_TRUE; +} + + +GLboolean +_mesa_validate_DrawArraysInstanced(struct gl_context *ctx, GLenum mode, GLint first, + GLsizei count, GLsizei numInstances) +{ + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + + if (count <= 0) { + if (count < 0) + _mesa_error(ctx, GL_INVALID_VALUE, + "glDrawArraysInstanced(count=%d)", count); + return GL_FALSE; + } + + if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glDrawArraysInstanced(mode=0x%x)", mode); + return GL_FALSE; + } + + if (numInstances <= 0) { + if (numInstances < 0) + _mesa_error(ctx, GL_INVALID_VALUE, + "glDrawArraysInstanced(numInstances=%d)", numInstances); + return GL_FALSE; + } + + if (!check_valid_to_render(ctx, "glDrawArraysInstanced(invalid to render)")) + return GL_FALSE; + + if (ctx->CompileFlag) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glDrawArraysInstanced(display list"); + return GL_FALSE; + } + + if (ctx->Const.CheckArrayBounds) { + if (first + count > (GLint) ctx->Array.ArrayObj->_MaxElement) + return GL_FALSE; + } + + return GL_TRUE; +} + + +GLboolean +_mesa_validate_DrawElementsInstanced(struct gl_context *ctx, + GLenum mode, GLsizei count, GLenum type, + const GLvoid *indices, GLsizei numInstances, + GLint basevertex) +{ + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + + if (count <= 0) { + if (count < 0) + _mesa_error(ctx, GL_INVALID_VALUE, + "glDrawElementsInstanced(count=%d)", count); + return GL_FALSE; + } + + if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glDrawElementsInstanced(mode = 0x%x)", mode); + return GL_FALSE; + } + + if (type != GL_UNSIGNED_INT && + type != GL_UNSIGNED_BYTE && + type != GL_UNSIGNED_SHORT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glDrawElementsInstanced(type=0x%x)", type); + return GL_FALSE; + } + + if (numInstances <= 0) { + if (numInstances < 0) + _mesa_error(ctx, GL_INVALID_VALUE, + "glDrawElementsInstanced(numInstances=%d)", numInstances); + return GL_FALSE; + } + + if (!check_valid_to_render(ctx, "glDrawElementsInstanced")) + return GL_FALSE; + + /* Vertex buffer object tests */ + if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) { + /* use indices in the buffer object */ + /* make sure count doesn't go outside buffer bounds */ + if (index_bytes(type, count) > ctx->Array.ElementArrayBufferObj->Size) { + _mesa_warning(ctx, + "glDrawElementsInstanced index out of buffer bounds"); + return GL_FALSE; + } + } + else { + /* not using a VBO */ + if (!indices) + return GL_FALSE; + } + + if (!check_index_bounds(ctx, count, type, indices, basevertex)) + return GL_FALSE; + + return GL_TRUE; +} -- cgit v1.2.3