diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/main/api_validate.c | 51 |
1 files changed, 19 insertions, 32 deletions
diff --git a/src/mesa/main/api_validate.c b/src/mesa/main/api_validate.c index 18dead61c3a..ab8c3e19bac 100644 --- a/src/mesa/main/api_validate.c +++ b/src/mesa/main/api_validate.c @@ -1,6 +1,6 @@ /* * Mesa 3-D graphics library - * Version: 7.0.1 + * Version: 7.1 * * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. * @@ -35,7 +35,6 @@ _mesa_validate_DrawElements(GLcontext *ctx, GLenum mode, GLsizei count, GLenum type, const GLvoid *indices) { - GLboolean mapped = GL_FALSE; ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); if (count <= 0) { @@ -68,19 +67,14 @@ _mesa_validate_DrawElements(GLcontext *ctx, /* Vertex buffer object tests */ if (ctx->Array.ElementArrayBufferObj->Name) { GLuint indexBytes; - const GLvoid *map = ctx->Driver.MapBuffer(ctx, - GL_ELEMENT_ARRAY_BUFFER_ARB, - GL_READ_ONLY, - ctx->Array.ElementArrayBufferObj); /* use indices in the buffer object */ - if (!map) { - _mesa_warning(ctx, "DrawElements with empty vertex elements buffer!"); + if (!ctx->Array.ElementArrayBufferObj->Size) { + _mesa_warning(ctx, + "glDrawElements called with empty array elements buffer"); return GL_FALSE; } - mapped = GL_TRUE; - /* make sure count doesn't go outside buffer bounds */ if (type == GL_UNSIGNED_INT) { indexBytes = count * sizeof(GLuint); @@ -93,19 +87,10 @@ _mesa_validate_DrawElements(GLcontext *ctx, indexBytes = count * sizeof(GLushort); } - if (ADD_POINTERS(map, indices) + indexBytes > - (GLubyte *)map + ctx->Array.ElementArrayBufferObj->Size) { + if (indexBytes > ctx->Array.ElementArrayBufferObj->Size) { _mesa_warning(ctx, "glDrawElements index out of buffer bounds"); - ctx->Driver.UnmapBuffer(ctx, - GL_ELEMENT_ARRAY_BUFFER_ARB, - ctx->Array.ElementArrayBufferObj); return GL_FALSE; } - - /* Actual address is the sum of pointers. Indices may be used below. */ - if (ctx->Const.CheckArrayBounds) { - indices = ADD_POINTERS(map, indices); - } } else { /* not using a VBO */ @@ -115,8 +100,18 @@ _mesa_validate_DrawElements(GLcontext *ctx, if (ctx->Const.CheckArrayBounds) { /* find max array index */ + const GLubyte *map; GLuint max = 0; GLint i; + + map = ctx->Driver.MapBuffer(ctx, + GL_ELEMENT_ARRAY_BUFFER_ARB, + GL_READ_ONLY, + ctx->Array.ElementArrayBufferObj); + + /* 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) @@ -134,24 +129,16 @@ _mesa_validate_DrawElements(GLcontext *ctx, max = ((GLubyte *) indices)[i]; } + ctx->Driver.UnmapBuffer(ctx, + GL_ELEMENT_ARRAY_BUFFER_ARB, + ctx->Array.ElementArrayBufferObj); + if (max >= ctx->Array._MaxElement) { /* the max element is out of bounds of one or more enabled arrays */ - if (mapped) { - ctx->Driver.UnmapBuffer(ctx, - GL_ELEMENT_ARRAY_BUFFER_ARB, - ctx->Array.ElementArrayBufferObj); - } - return GL_FALSE; } } - if (mapped) { - ctx->Driver.UnmapBuffer(ctx, - GL_ELEMENT_ARRAY_BUFFER_ARB, - ctx->Array.ElementArrayBufferObj); - } - return GL_TRUE; } |