-
/*
* Mesa 3-D graphics library
- * Version: 5.1
+ * Version: 6.1
*
* Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
*
#include "glheader.h"
#include "api_validate.h"
#include "context.h"
-#include "image.h" /* for _mesa_sizeof_type() */
#include "imports.h"
#include "mtypes.h"
#include "state.h"
}
if (mode > GL_POLYGON) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" );
+ _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(mode)" );
return GL_FALSE;
}
}
if (ctx->NewState)
- _mesa_update_state( ctx );
+ _mesa_update_state(ctx);
- if (ctx->Array.Vertex.Enabled
- || (ctx->VertexProgram.Enabled && ctx->Array.VertexAttrib[0].Enabled))
- return GL_TRUE;
- else
+ /* Always need vertex positions */
+ if (!ctx->Array.Vertex.Enabled
+ && !(ctx->VertexProgram._Enabled && ctx->Array.VertexAttrib[0].Enabled))
return GL_FALSE;
+ /* Vertex buffer object tests */
+ if (ctx->Array.ElementArrayBufferObj->Name) {
+ GLuint indexBytes;
+
+ /* use indices in the buffer object */
+ if (!ctx->Array.ElementArrayBufferObj->Data) {
+ _mesa_warning(ctx, "DrawElements with empty vertex elements buffer!");
+ return GL_FALSE;
+ }
+
+ /* make sure count doesn't go outside buffer bounds */
+ if (type == GL_UNSIGNED_INT) {
+ indexBytes = count * sizeof(GLuint);
+ }
+ else if (type == GL_UNSIGNED_BYTE) {
+ indexBytes = count * sizeof(GLubyte);
+ }
+ else {
+ ASSERT(type == GL_UNSIGNED_SHORT);
+ indexBytes = count * sizeof(GLushort);
+ }
+
+ if ((GLubyte *) indices + indexBytes >
+ ctx->Array.ElementArrayBufferObj->Data +
+ ctx->Array.ElementArrayBufferObj->Size) {
+ _mesa_warning(ctx, "glDrawElements index out of buffer bounds");
+ return GL_FALSE;
+ }
+
+ /* Actual address is the sum of pointers. Indices may be used below. */
+ if (ctx->Const.CheckArrayBounds) {
+ indices = (const GLvoid *)
+ ADD_POINTERS(ctx->Array.ElementArrayBufferObj->Data,
+ (const GLubyte *) indices);
+ }
+ }
+
+ if (ctx->Const.CheckArrayBounds) {
+ /* find max array index */
+ GLuint max = 0;
+ GLint i;
+ 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 (max >= ctx->Array._MaxElement) {
+ /* the max element is out of bounds of one or more enabled arrays */
+ return GL_FALSE;
+ }
+ }
+
return GL_TRUE;
}
if (count <= 0) {
if (count < 0)
- _mesa_error(ctx, GL_INVALID_VALUE, "glDrawElements(count)" );
+ _mesa_error(ctx, GL_INVALID_VALUE, "glDrawRangeElements(count)" );
return GL_FALSE;
}
if (mode > GL_POLYGON) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" );
+ _mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(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)" );
+ _mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(type)" );
return GL_FALSE;
}
if (ctx->NewState)
- _mesa_update_state( ctx );
-
- if (ctx->Array.Vertex.Enabled
- || (ctx->VertexProgram.Enabled && ctx->Array.VertexAttrib[0].Enabled))
- return GL_TRUE;
- else
- return GL_FALSE;
-}
-
-
-/**
- * Helper routine for validating vertex array data to be sure the given
- * element lies within the legal range (i.e. vertex buffer object).
- */
-static INLINE GLboolean
-validate(GLcontext *ctx, GLint attribArray,
- const struct gl_client_array *array, GLint element)
-{
- if (ctx->VertexProgram.Enabled
- && attribArray >= 0
- && ctx->Array.VertexAttrib[attribArray].Enabled) {
- if (element >= ctx->Array.VertexAttrib[attribArray]._MaxElement)
- return GL_FALSE;
- }
- else if (array && array->Enabled) {
- if (element >= array->_MaxElement)
+ _mesa_update_state(ctx);
+
+ /* Always need vertex positions */
+ if (!ctx->Array.Vertex.Enabled
+ && !(ctx->VertexProgram._Enabled && ctx->Array.VertexAttrib[0].Enabled))
+ return GL_FALSE;
+
+ if (ctx->Const.CheckArrayBounds) {
+ /* Find max array index.
+ * We don't trust the user's start and end values.
+ */
+ GLuint max = 0;
+ GLint i;
+ 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 (max >= ctx->Array._MaxElement) {
+ /* the max element is out of bounds of one or more enabled arrays */
return GL_FALSE;
+ }
}
+
return GL_TRUE;
}
_mesa_validate_DrawArrays(GLcontext *ctx,
GLenum mode, GLint start, GLsizei count)
{
- GLint i;
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
if (count < 0) {
}
if (ctx->NewState)
- _mesa_update_state( ctx );
-
- /* Either the conventional vertex position array, or the 0th
- * generic vertex attribute array is required to be enabled.
- */
- if (ctx->VertexProgram.Enabled
- && ctx->Array.VertexAttrib[VERT_ATTRIB_POS].Enabled) {
- if (start + count >= ctx->Array.VertexAttrib[VERT_ATTRIB_POS]._MaxElement)
- return GL_FALSE;
- }
- else if (ctx->Array.Vertex.Enabled) {
- if (start + count >= ctx->Array.Vertex._MaxElement)
- return GL_FALSE;
- }
- else {
- /* no vertex position array! */
- return GL_FALSE;
- }
-
- /*
- * OK, now check all the other enabled arrays to be sure the elements
- * are in bounds.
- */
- if (!validate(ctx, VERT_ATTRIB_WEIGHT, NULL, start + count))
- return GL_FALSE;
-
- if (!validate(ctx, VERT_ATTRIB_NORMAL, &ctx->Array.Normal, start + count))
- return GL_FALSE;
-
- if (!validate(ctx, VERT_ATTRIB_COLOR0, &ctx->Array.Color, start + count))
- return GL_FALSE;
+ _mesa_update_state(ctx);
- if (!validate(ctx, VERT_ATTRIB_COLOR1, &ctx->Array.SecondaryColor, start + count))
+ /* Always need vertex positions */
+ if (!ctx->Array.Vertex.Enabled && !ctx->Array.VertexAttrib[0].Enabled)
return GL_FALSE;
- if (!validate(ctx, VERT_ATTRIB_FOG, &ctx->Array.FogCoord, start + count))
- return GL_FALSE;
-
- if (!validate(ctx, VERT_ATTRIB_SIX, NULL, start + count))
- return GL_FALSE;
-
- if (!validate(ctx, VERT_ATTRIB_SEVEN, &ctx->Array.FogCoord, start + count))
- return GL_FALSE;
-
- for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
- if (!validate(ctx, VERT_ATTRIB_TEX0 + i, &ctx->Array.TexCoord[i], start + count))
+ if (ctx->Const.CheckArrayBounds) {
+ if (start + count > (GLint) ctx->Array._MaxElement)
return GL_FALSE;
-
- if (!validate(ctx, -1, &ctx->Array.Index, start + count))
- return GL_FALSE;
-
- if (!validate(ctx, -1, &ctx->Array.EdgeFlag, start + count))
- return GL_FALSE;
+ }
return GL_TRUE;
}
projects / mesa.git / blobdiff