[Mesa-dev] [PATCH 4/5] meta: Don't do conditional rendering on GenerateMipmaps and BlitFramebuffer.

[Eric Anholt]

The NV_conditional_render spec calls out specific operations that
conditional rendering applies to, which doesn't include these.

Fixes NV_conditional_render/generatemipmap on swrast.
---
 src/mesa/drivers/common/meta.c |   25 ++++++++++++++++++++++++-
 1 files changed, 24 insertions(+), 1 deletions(-)

diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
index 6c35fa1..a396479 100644
--- a/src/mesa/drivers/common/meta.c
+++ b/src/mesa/drivers/common/meta.c
@@ -40,6 +40,7 @@
 #include "main/bufferobj.h"
 #include "main/buffers.h"
 #include "main/colortab.h"
+#include "main/condrender.h"
 #include "main/depth.h"
 #include "main/enable.h"
 #include "main/fbobject.h"
@@ -94,6 +95,7 @@
 #define META_VIEWPORT       0x4000
 #define META_CLAMP_FRAGMENT_COLOR 0x8000
 #define META_CLAMP_VERTEX_COLOR 0x10000
+#define META_CONDITIONAL_RENDER 0x20000
 /*@}*/
 
 
@@ -188,6 +190,10 @@ struct save_state
    /** META_CLAMP_VERTEX_COLOR */
    GLenum ClampVertexColor;
 
+   /** META_CONDITIONAL_RENDER */
+   struct gl_query_object *CondRenderQuery;
+   GLenum CondRenderMode;
+
    /** Miscellaneous (always disabled) */
    GLboolean Lighting;
 };
@@ -597,6 +603,14 @@ _mesa_meta_begin(struct gl_context *ctx, GLbitfield state)
       _mesa_ClampColorARB(GL_CLAMP_VERTEX_COLOR, GL_FALSE);
    }
 
+   if (state & META_CONDITIONAL_RENDER) {
+      save->CondRenderQuery = ctx->Query.CondRenderQuery;
+      save->CondRenderMode = ctx->Query.CondRenderMode;
+
+      if (ctx->Query.CondRenderQuery)
+	 _mesa_EndConditionalRender();
+   }
+
    /* misc */
    {
       save->Lighting = ctx->Light.Enabled;
@@ -869,6 +883,12 @@ _mesa_meta_end(struct gl_context *ctx)
       _mesa_ClampColorARB(GL_CLAMP_VERTEX_COLOR, save->ClampVertexColor);
    }
 
+   if (state & META_CONDITIONAL_RENDER) {
+      if (save->CondRenderQuery)
+	 _mesa_BeginConditionalRender(save->CondRenderQuery->Id,
+				      save->CondRenderMode);
+   }
+
    /* misc */
    if (save->Lighting) {
       _mesa_set_enable(ctx, GL_LIGHTING, GL_TRUE);
@@ -1442,7 +1462,10 @@ _mesa_meta_Clear(struct gl_context *ctx, GLbitfield buffers)
    };
    struct vertex verts[4];
    /* save all state but scissor, pixel pack/unpack */
-   GLbitfield metaSave = META_ALL - META_SCISSOR - META_PIXEL_STORE;
+   GLbitfield metaSave = (META_ALL -
+			  META_SCISSOR -
+			  META_PIXEL_STORE -
+			  META_CONDITIONAL_RENDER);
    const GLuint stencilMax = (1 << ctx->DrawBuffer->Visual.stencilBits) - 1;
 
    if (buffers & BUFFER_BITS_COLOR) {
-- 
1.7.4.4