xserver and mesa git update 28-12-2010

1 files changed, 432 insertions, 431 deletions

diff --git a/mesalib/src/mesa/main/api_validate.c b/mesalib/src/mesa/main/api_validate.c
index b3b5c6cc0..e48a18a00 100644
--- a/mesalib/src/mesa/main/api_validate.c
+++ b/mesalib/src/mesa/main/api_validate.c
@@ -1,431 +1,432 @@
-/*
- * 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 "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(GLcontext *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(GLcontext *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 || FEATURE_GL
-   case API_OPENGLES:
-   case API_OPENGL:
-      /* For regular OpenGL, only draw if we have vertex positions
-       * (regardless of whether or not we have a vertex program/shader). */
-      if (!ctx->Array.ArrayObj->Vertex.Enabled &&
-	  !ctx->Array.ArrayObj->VertexAttrib[0].Enabled)
-	 return GL_FALSE;
-      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(GLcontext *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(GLcontext *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(GLcontext *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(end<start)");
-      return GL_FALSE;
-   }
-
-   if (type != GL_UNSIGNED_INT &&
-       type != GL_UNSIGNED_BYTE &&
-       type != GL_UNSIGNED_SHORT) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(type)" );
-      return GL_FALSE;
-   }
-
-   if (!check_valid_to_render(ctx, "glDrawRangeElements"))
-      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, "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(GLcontext *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(GLcontext *ctx, GLenum mode, GLint first,
-                                   GLsizei count, GLsizei primcount)
-{
-   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 (primcount <= 0) {
-      if (primcount < 0)
-         _mesa_error(ctx, GL_INVALID_VALUE,
-                     "glDrawArraysInstanced(primcount=%d)", primcount);
-      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(GLcontext *ctx,
-                                     GLenum mode, GLsizei count, GLenum type,
-                                     const GLvoid *indices, GLsizei primcount)
-{
-   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 (primcount <= 0) {
-      if (primcount < 0)
-         _mesa_error(ctx, GL_INVALID_VALUE,
-                     "glDrawElementsInstanced(primcount=%d)", primcount);
-      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 || FEATURE_GL

+   case API_OPENGLES:

+   case API_OPENGL:

+      /* For regular OpenGL, only draw if we have vertex positions

+       * (regardless of whether or not we have a vertex program/shader). */

+      if (!ctx->Array.ArrayObj->Vertex.Enabled &&

+	  !ctx->Array.ArrayObj->VertexAttrib[0].Enabled)

+	 return GL_FALSE;

+      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(end<start)");

+      return GL_FALSE;

+   }

+

+   if (type != GL_UNSIGNED_INT &&

+       type != GL_UNSIGNED_BYTE &&

+       type != GL_UNSIGNED_SHORT) {

+      _mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(type)" );

+      return GL_FALSE;

+   }

+

+   if (!check_valid_to_render(ctx, "glDrawRangeElements"))

+      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, "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 primcount)

+{

+   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 (primcount <= 0) {

+      if (primcount < 0)

+         _mesa_error(ctx, GL_INVALID_VALUE,

+                     "glDrawArraysInstanced(primcount=%d)", primcount);

+      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 primcount)

+{

+   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 (primcount <= 0) {

+      if (primcount < 0)

+         _mesa_error(ctx, GL_INVALID_VALUE,

+                     "glDrawElementsInstanced(primcount=%d)", primcount);

+      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;

+}