From: Brian Paul <brianp@vmware.com>
Date: Thu, 2 May 2013 01:15:32 +0000 (-0600)
Subject: vbo: fix parameter validation for saving dlist glDraw* functions
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d6f3ef92d7cdc48c3fee50aac09e33148aec035f;p=mesa.git

vbo: fix parameter validation for saving dlist glDraw* functions

The _save_OBE_DrawArrays/Elements/RangeElements() functions are
called when building a display list and we know we're outside
glBegin/End.

We shouldn't call the normal _mesa_validate_DrawArrays/Elements()
functions here because those functions only work properly in immediate
mode or during dlist execution.  At dlist compile time, we can't call
_mesa_update_state(), etc. and examine the current state since it won't
apply when the list is executed later.

Fixes several failures in piglit's gl-1.0-beginend-coverage test.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
---

diff --git a/src/mesa/vbo/vbo_save_api.c b/src/mesa/vbo/vbo_save_api.c
index 4fae37a2afe..1b080f4ec22 100644
--- a/src/mesa/vbo/vbo_save_api.c
+++ b/src/mesa/vbo/vbo_save_api.c
@@ -1232,8 +1232,14 @@ _save_OBE_DrawArrays(GLenum mode, GLint start, GLsizei count)
    struct vbo_save_context *save = &vbo_context(ctx)->save;
    GLint i;
 
-   if (!_mesa_validate_DrawArrays(ctx, mode, start, count))
+   if (!_mesa_is_valid_prim_mode(ctx, mode)) {
+      _mesa_compile_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)");
       return;
+   }
+   if (count < 0) {
+      _mesa_compile_error(ctx, GL_INVALID_VALUE, "glDrawArrays(count<0)");
+      return;
+   }
 
    if (save->out_of_memory)
       return;
@@ -1262,8 +1268,20 @@ _save_OBE_DrawElements(GLenum mode, GLsizei count, GLenum type,
    struct vbo_save_context *save = &vbo_context(ctx)->save;
    GLint i;
 
-   if (!_mesa_validate_DrawElements(ctx, mode, count, type, indices, 0))
+   if (!_mesa_is_valid_prim_mode(ctx, mode)) {
+      _mesa_compile_error(ctx, GL_INVALID_ENUM, "glDrawElements(mode)");
+      return;
+   }
+   if (count < 0) {
+      _mesa_compile_error(ctx, GL_INVALID_VALUE, "glDrawElements(count<0)");
+      return;
+   }
+   if (type != GL_UNSIGNED_BYTE &&
+       type != GL_UNSIGNED_SHORT &&
+       type != GL_UNSIGNED_INT) {
+      _mesa_compile_error(ctx, GL_INVALID_VALUE, "glDrawElements(count<0)");
       return;
+   }
 
    if (save->out_of_memory)
       return;
@@ -1309,9 +1327,26 @@ _save_OBE_DrawRangeElements(GLenum mode, GLuint start, GLuint end,
    GET_CURRENT_CONTEXT(ctx);
    struct vbo_save_context *save = &vbo_context(ctx)->save;
 
-   if (!_mesa_validate_DrawRangeElements(ctx, mode,
-                                         start, end, count, type, indices, 0))
+   if (!_mesa_is_valid_prim_mode(ctx, mode)) {
+      _mesa_compile_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(mode)");
       return;
+   }
+   if (count < 0) {
+      _mesa_compile_error(ctx, GL_INVALID_VALUE,
+                          "glDrawRangeElements(count<0)");
+      return;
+   }
+   if (type != GL_UNSIGNED_BYTE &&
+       type != GL_UNSIGNED_SHORT &&
+       type != GL_UNSIGNED_INT) {
+      _mesa_compile_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(type)");
+      return;
+   }
+   if (end < start) {
+      _mesa_compile_error(ctx, GL_INVALID_VALUE,
+                          "glDrawRangeElements(end < start)");
+      return;
+   }
 
    if (save->out_of_memory)
       return;