From c1e6c7428a8d2c1b60ffac7df7a3f56c300fa983 Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Thu, 22 Sep 2011 15:20:09 +0200
Subject: libxtrans libX11 libX11 libXext mesa xserver git update 22 sep 2011

---
 mesalib/src/mesa/main/api_validate.c | 31 ++++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 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 699b414f5..1fcf5cd68 100644
--- a/mesalib/src/mesa/main/api_validate.c
+++ b/mesalib/src/mesa/main/api_validate.c
@@ -198,6 +198,27 @@ check_index_bounds(struct gl_context *ctx, GLsizei count, GLenum type,
 }
 
 
+/**
+ * Is 'mode' a valid value for glBegin(), glDrawArrays(), glDrawElements(),
+ * etc?  The set of legal values depends on whether geometry shaders/programs
+ * are supported.
+ */
+GLboolean
+_mesa_valid_prim_mode(const struct gl_context *ctx, GLenum mode)
+{
+   if (ctx->Extensions.ARB_geometry_shader4 &&
+       mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) {
+      return GL_FALSE;
+   }
+   else if (mode > GL_POLYGON) {
+      return GL_FALSE;
+   }
+   else {
+      return GL_TRUE;
+   }
+}
+
+
 /**
  * Error checking for glDrawElements().  Includes parameter checking
  * and VBO bounds checking.
@@ -216,7 +237,7 @@ _mesa_validate_DrawElements(struct gl_context *ctx,
       return GL_FALSE;
    }
 
-   if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) {
+   if (!_mesa_valid_prim_mode(ctx, mode)) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(mode)" );
       return GL_FALSE;
    }
@@ -273,7 +294,7 @@ _mesa_validate_DrawRangeElements(struct gl_context *ctx, GLenum mode,
       return GL_FALSE;
    }
 
-   if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) {
+   if (!_mesa_valid_prim_mode(ctx, mode)) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(mode)" );
       return GL_FALSE;
    }
@@ -332,7 +353,7 @@ _mesa_validate_DrawArrays(struct gl_context *ctx,
       return GL_FALSE;
    }
 
-   if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) {
+   if (!_mesa_valid_prim_mode(ctx, mode)) {
       _mesa_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" );
       return GL_FALSE;
    }
@@ -362,7 +383,7 @@ _mesa_validate_DrawArraysInstanced(struct gl_context *ctx, GLenum mode, GLint fi
       return GL_FALSE;
    }
 
-   if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) {
+   if (!_mesa_valid_prim_mode(ctx, mode)) {
       _mesa_error(ctx, GL_INVALID_ENUM,
                   "glDrawArraysInstanced(mode=0x%x)", mode);
       return GL_FALSE;
@@ -408,7 +429,7 @@ _mesa_validate_DrawElementsInstanced(struct gl_context *ctx,
       return GL_FALSE;
    }
 
-   if (mode > GL_TRIANGLE_STRIP_ADJACENCY_ARB) {
+   if (!_mesa_valid_prim_mode(ctx, mode)) {
       _mesa_error(ctx, GL_INVALID_ENUM,
                   "glDrawElementsInstanced(mode = 0x%x)", mode);
       return GL_FALSE;
-- 
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