From 4da5f1b7c52fb02a3b2baa846931c2dd5ee1b92e Mon Sep 17 00:00:00 2001
From: Ian Romanick <ian.d.romanick@intel.com>
Date: Mon, 27 Sep 2010 14:29:12 -0700
Subject: mesa: Force GL_ARB_copy_buffer to always be enabled

As per discussions at XDS.
---
 src/mesa/drivers/dri/common/utils.c           |  2 ++
 src/mesa/drivers/dri/intel/intel_extensions.c |  2 --
 src/mesa/main/bufferobj.c                     | 10 ++--------
 src/mesa/main/extensions.c                    |  4 ++--
 4 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/src/mesa/drivers/dri/common/utils.c b/src/mesa/drivers/dri/common/utils.c
index 0dd879abc9..0685d2f0e6 100644
--- a/src/mesa/drivers/dri/common/utils.c
+++ b/src/mesa/drivers/dri/common/utils.c
@@ -140,6 +140,7 @@ driGetRendererString( char * buffer, const char * hardware_name,
 
 
 
+#define need_GL_ARB_copy_buffer
 #define need_GL_ARB_draw_buffers
 #define need_GL_ARB_multisample
 #define need_GL_ARB_texture_compression
@@ -164,6 +165,7 @@ driGetRendererString( char * buffer, const char * hardware_name,
 #include "main/remap_helper.h"
 
 static const struct dri_extension all_mesa_extensions[] = {
+   { "GL_ARB_copy_buffer",           GL_ARB_copy_buffer_functions },
    { "GL_ARB_draw_buffers",          GL_ARB_draw_buffers_functions },
    { "GL_ARB_multisample",           GL_ARB_multisample_functions },
    { "GL_ARB_texture_compression",   GL_ARB_texture_compression_functions },
diff --git a/src/mesa/drivers/dri/intel/intel_extensions.c b/src/mesa/drivers/dri/intel/intel_extensions.c
index 2edd6d21b4..112f71d3b8 100644
--- a/src/mesa/drivers/dri/intel/intel_extensions.c
+++ b/src/mesa/drivers/dri/intel/intel_extensions.c
@@ -31,7 +31,6 @@
 #include "utils.h"
 
 
-#define need_GL_ARB_copy_buffer
 #define need_GL_ARB_draw_elements_base_vertex
 #define need_GL_ARB_framebuffer_object
 #define need_GL_ARB_map_buffer_range
@@ -79,7 +78,6 @@
  * i965_dri.
  */
 static const struct dri_extension card_extensions[] = {
-   { "GL_ARB_copy_buffer",                GL_ARB_copy_buffer_functions },
    { "GL_ARB_draw_elements_base_vertex",  GL_ARB_draw_elements_base_vertex_functions },
    { "GL_ARB_half_float_pixel",           NULL },
    { "GL_ARB_map_buffer_range",           GL_ARB_map_buffer_range_functions },
diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index 4797f29b4d..61d46b936b 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -74,15 +74,9 @@ get_buffer_target(GLcontext *ctx, GLenum target)
    case GL_PIXEL_UNPACK_BUFFER_EXT:
       return &ctx->Unpack.BufferObj;
    case GL_COPY_READ_BUFFER:
-      if (ctx->Extensions.ARB_copy_buffer) {
-         return &ctx->CopyReadBuffer;
-      }
-      break;
+      return &ctx->CopyReadBuffer;
    case GL_COPY_WRITE_BUFFER:
-      if (ctx->Extensions.ARB_copy_buffer) {
-         return &ctx->CopyWriteBuffer;
-      }
-      break;
+      return &ctx->CopyWriteBuffer;
 #if FEATURE_EXT_transform_feedback
    case GL_TRANSFORM_FEEDBACK_BUFFER:
       if (ctx->Extensions.EXT_transform_feedback) {
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index c5febc77cf..fe7eade3eb 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -45,7 +45,7 @@ static const struct {
    int flag_offset;
 } default_extensions[] = {
    { OFF, "GL_ARB_blend_func_extended",        F(ARB_blend_func_extended) },
-   { OFF, "GL_ARB_copy_buffer",                F(ARB_copy_buffer) },
+   { ON,  "GL_ARB_copy_buffer",                F(ARB_copy_buffer) },
    { OFF, "GL_ARB_depth_buffer_float",         F(ARB_depth_buffer_float) },
    { OFF, "GL_ARB_depth_clamp",                F(ARB_depth_clamp) },
    { OFF, "GL_ARB_depth_texture",              F(ARB_depth_texture) },
@@ -229,7 +229,7 @@ static const struct {
 void
 _mesa_enable_sw_extensions(GLcontext *ctx)
 {
-   ctx->Extensions.ARB_copy_buffer = GL_TRUE;
+   /*ctx->Extensions.ARB_copy_buffer = GL_TRUE;*/
    ctx->Extensions.ARB_depth_clamp = GL_TRUE;
    ctx->Extensions.ARB_depth_texture = GL_TRUE;
    /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
-- 
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