From 4db23069f9aca4e2fa51f82009f5fa8f3cd2860d Mon Sep 17 00:00:00 2001
From: Chia-I Wu <olvaffe@gmail.com>
Date: Mon, 14 Sep 2009 15:39:09 +0800
Subject: es: Check OES_draw_texture is enabled.

---
 src/mesa/es/main/drawtex.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/mesa/es/main/drawtex.c b/src/mesa/es/main/drawtex.c
index af055d07d2..1462807f9d 100644
--- a/src/mesa/es/main/drawtex.c
+++ b/src/mesa/es/main/drawtex.c
@@ -35,6 +35,11 @@ static INLINE void
 draw_texture(GLcontext *ctx, GLfloat x, GLfloat y, GLfloat z,
              GLfloat width, GLfloat height)
 {
+   if (!ctx->Extensions.OES_draw_texture) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glDrawTex(unsupported)");
+      return;
+   }
    if (width <= 0.0f || height <= 0.0f) {
       _mesa_error(ctx, GL_INVALID_VALUE, "glDrawTex(width or height <= 0)");
       return;
@@ -43,8 +48,8 @@ draw_texture(GLcontext *ctx, GLfloat x, GLfloat y, GLfloat z,
    if (ctx->NewState)
       _mesa_update_state(ctx);
 
-   if (ctx->Driver.DrawTex)
-      ctx->Driver.DrawTex(ctx, x, y, z, width, height);
+   ASSERT(ctx->Driver.DrawTex);
+   ctx->Driver.DrawTex(ctx, x, y, z, width, height);
 }
 
 
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