On 04/20/2011 12:08 PM, Eric Anholt wrote:
Since we lack hardware support for it, this is a simple matter of
checking _mesa_check_conditional_render at the entrypoints, and
suppressing it for the metaops where it doesn't apply.
---
  docs/GL3.txt                                    |    2 +-
  docs/relnotes-7.11.html                         |    1 +
  src/mesa/drivers/dri/i965/brw_draw.c            |    4 ++++
  src/mesa/drivers/dri/intel/intel_clear.c        |    4 ++++
  src/mesa/drivers/dri/intel/intel_extensions.c   |    1 +
  src/mesa/drivers/dri/intel/intel_pixel.c        |   12 +++++++++++-
  src/mesa/drivers/dri/intel/intel_pixel_bitmap.c |    4 ++++
  src/mesa/drivers/dri/intel/intel_pixel_copy.c   |    4 ++++
  8 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/docs/GL3.txt b/docs/GL3.txt
index 6eeb9e4..c4e6059 100644
--- a/docs/GL3.txt
+++ b/docs/GL3.txt
@@ -13,7 +13,7 @@ Feature                                               Status
  GL 3.0:

  GLSL 1.30 (GL_EXT_gpu_shader4, etc.)                  started
-Conditional rendering (GL_NV_conditional_render)      DONE (swrast&  softpipe)
+Conditional rendering (GL_NV_conditional_render)      DONE (swrast, softpipe, 
i965)
  Map buffer subranges (GL_ARB_map_buffer_range)        DONE
  Clamping controls (GL_ARB_color_buffer_float)         DONE
  Float textures, renderbuffers (GL_ARB_texture_float)  DONE (gallium r300)
diff --git a/docs/relnotes-7.11.html b/docs/relnotes-7.11.html
index d223a0a..b57fe9b 100644
--- a/docs/relnotes-7.11.html
+++ b/docs/relnotes-7.11.html
@@ -51,6 +51,7 @@ tbd
  <li>GL_ATI_draw_buffers (all drivers)
  <li>GL_ATI_texture_compression_3dc (gallium drivers, swrast)
  <li>GL_ATI_texture_float (gallium, i965)
+<li>GL_NV_conditional_render (i965)
  <li>GL_NV_texture_barrier (gallium drivers)
  </ul>

diff --git a/src/mesa/drivers/dri/i965/brw_draw.c 
b/src/mesa/drivers/dri/i965/brw_draw.c
index 2db70c5..4dd0c82 100644
--- a/src/mesa/drivers/dri/i965/brw_draw.c
+++ b/src/mesa/drivers/dri/i965/brw_draw.c
@@ -28,6 +28,7 @@

  #include "main/glheader.h"
  #include "main/context.h"
+#include "main/condrender.h"
  #include "main/state.h"
  #include "main/enums.h"
  #include "tnl/tnl.h"
@@ -438,6 +439,9 @@ void brw_draw_prims( struct gl_context *ctx,
  {
     GLboolean retval;

+   if (!_mesa_check_conditional_render(ctx))
+      return;
+
     if (!vbo_all_varyings_in_vbos(arrays)) {
        if (!index_bounds_valid)
         vbo_get_minmax_index(ctx, prim, ib,&min_index,&max_index);
diff --git a/src/mesa/drivers/dri/intel/intel_clear.c 
b/src/mesa/drivers/dri/intel/intel_clear.c
index 82d29e7..5a96232 100644
--- a/src/mesa/drivers/dri/intel/intel_clear.c
+++ b/src/mesa/drivers/dri/intel/intel_clear.c
@@ -28,6 +28,7 @@

  #include "main/glheader.h"
  #include "main/mtypes.h"
+#include "main/condrender.h"
  #include "swrast/swrast.h"
  #include "drivers/common/meta.h"

@@ -88,6 +89,9 @@ intelClear(struct gl_context *ctx, GLbitfield mask)
     struct intel_renderbuffer *irb;
     int i;

+   if (!_mesa_check_conditional_render(ctx))
+      return;
+
     if (mask&  (BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_FRONT_RIGHT)) {
        intel->front_buffer_dirty = GL_TRUE;
     }
diff --git a/src/mesa/drivers/dri/intel/intel_extensions.c 
b/src/mesa/drivers/dri/intel/intel_extensions.c
index 6a81857..c24bc99 100644
--- a/src/mesa/drivers/dri/intel/intel_extensions.c
+++ b/src/mesa/drivers/dri/intel/intel_extensions.c
@@ -190,6 +190,7 @@ static const struct dri_extension brw_extensions[] = {
     { "GL_ATI_envmap_bumpmap",             GL_ATI_envmap_bumpmap_functions },
     { "GL_ATI_separate_stencil",           GL_ATI_separate_stencil_functions },
     { "GL_ATI_texture_env_combine3",       NULL },
+   { "GL_NV_conditional_render",          NULL },
     { "GL_NV_texture_env_combine4",        NULL },
     { NULL,                                NULL }
  };
diff --git a/src/mesa/drivers/dri/intel/intel_pixel.c 
b/src/mesa/drivers/dri/intel/intel_pixel.c
index f97256e..8143e64 100644
--- a/src/mesa/drivers/dri/intel/intel_pixel.c
+++ b/src/mesa/drivers/dri/intel/intel_pixel.c
@@ -28,6 +28,7 @@
  #include "main/enums.h"
  #include "main/state.h"
  #include "main/bufferobj.h"
+#include "main/condrender.h"
  #include "main/context.h"
  #include "swrast/swrast.h"

@@ -154,10 +155,19 @@ intel_check_blit_format(struct intel_region * region,
     return GL_FALSE;
  }

+static void
+intel_accum(struct gl_context *ctx, GLenum op, GLfloat value)
+{
+   if (!_mesa_check_conditional_render(ctx))
+      return;
+
+   _swrast_Accum(ctx, op, value);
+}
+

In this case I think we should do the _mesa_check_conditional_render() call in _swrast_Accum() itself. That would match what we're doing for _swrast_DrawPixels(), _swrast_CopyPixels() and _swrast_Bitmap(). I think I just missed the glAccum case when I implemented these.

Otherwise, for the series:
Reviewed-by: Brian Paul <[email protected]>

-Brian
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