Merge branch 'gallium-conditional-rendering'

16 files changed, 233 insertions, 17 deletions

diff --git a/src/gallium/drivers/softpipe/sp_clear.c b/src/gallium/drivers/softpipe/sp_clear.c
index f98087deb8..5f130453c3 100644
--- a/src/gallium/drivers/softpipe/sp_clear.c
+++ b/src/gallium/drivers/softpipe/sp_clear.c
@@ -36,6 +36,7 @@
 #include "util/u_pack_color.h"
 #include "sp_clear.h"
 #include "sp_context.h"
+#include "sp_query.h"
 #include "sp_tile_cache.h"
 
 
@@ -55,6 +56,9 @@ softpipe_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba,
    if (softpipe->no_rast)
       return;
 
+   if (!softpipe_check_render_cond(softpipe))
+      return;
+
 #if 0
    softpipe_update_derived(softpipe); /* not needed?? */
 #endif
diff --git a/src/gallium/drivers/softpipe/sp_context.c b/src/gallium/drivers/softpipe/sp_context.c
index 82173a3c2a..f3ac6760db 100644
--- a/src/gallium/drivers/softpipe/sp_context.c
+++ b/src/gallium/drivers/softpipe/sp_context.c
@@ -176,6 +176,19 @@ softpipe_is_buffer_referenced( struct pipe_context *pipe,
 }
 
 
+static void
+softpipe_render_condition( struct pipe_context *pipe,
+                           struct pipe_query *query,
+                           uint mode )
+{
+   struct softpipe_context *softpipe = softpipe_context( pipe );
+
+   softpipe->render_cond_query = query;
+   softpipe->render_cond_mode = mode;
+}
+
+
+
 struct pipe_context *
 softpipe_create( struct pipe_screen *screen )
 {
@@ -252,6 +265,8 @@ softpipe_create( struct pipe_screen *screen )
 
    softpipe_init_query_funcs( softpipe );
 
+   softpipe->pipe.render_condition = softpipe_render_condition;
+
    /*
     * Alloc caches for accessing drawing surfaces and textures.
     * Must be before quad stage setup!
diff --git a/src/gallium/drivers/softpipe/sp_context.h b/src/gallium/drivers/softpipe/sp_context.h
index 6a89bd4b06..73fa744f9d 100644
--- a/src/gallium/drivers/softpipe/sp_context.h
+++ b/src/gallium/drivers/softpipe/sp_context.h
@@ -116,6 +116,10 @@ struct softpipe_context {
 
    unsigned line_stipple_counter;
 
+   /** Conditional query object and mode */
+   struct pipe_query *render_cond_query;
+   uint render_cond_mode;
+
    /** Software quad rendering pipeline */
    struct {
       struct quad_stage *shade;
diff --git a/src/gallium/drivers/softpipe/sp_draw_arrays.c b/src/gallium/drivers/softpipe/sp_draw_arrays.c
index 9ea5d6fb9f..7409c3c488 100644
--- a/src/gallium/drivers/softpipe/sp_draw_arrays.c
+++ b/src/gallium/drivers/softpipe/sp_draw_arrays.c
@@ -38,6 +38,7 @@
 #include "util/u_prim.h"
 
 #include "sp_context.h"
+#include "sp_query.h"
 #include "sp_state.h"
 
 #include "draw/draw_context.h"
@@ -122,6 +123,9 @@ softpipe_draw_range_elements(struct pipe_context *pipe,
    struct draw_context *draw = sp->draw;
    unsigned i;
 
+   if (!softpipe_check_render_cond(sp))
+      return TRUE;
+
    sp->reduced_api_prim = u_reduced_prim(mode);
 
    if (sp->dirty)
diff --git a/src/gallium/drivers/softpipe/sp_query.c b/src/gallium/drivers/softpipe/sp_query.c
index 379cf4ad06..4ef5d9f7b1 100644
--- a/src/gallium/drivers/softpipe/sp_query.c
+++ b/src/gallium/drivers/softpipe/sp_query.c
@@ -99,6 +99,32 @@ softpipe_get_query_result(struct pipe_context *pipe,
 }
 
 
+/**
+ * Called by rendering function to check rendering is conditional.
+ * \return TRUE if we should render, FALSE if we should skip rendering
+ */
+boolean
+softpipe_check_render_cond(struct softpipe_context *sp)
+{
+   struct pipe_context *pipe = &sp->pipe;
+   boolean b, wait;
+   uint64_t result;
+
+   if (!sp->render_cond_query) {
+      return TRUE;  /* no query predicate, draw normally */
+   }
+
+   wait = (sp->render_cond_mode == PIPE_RENDER_COND_WAIT ||
+           sp->render_cond_mode == PIPE_RENDER_COND_BY_REGION_WAIT);
+
+   b = pipe->get_query_result(pipe, sp->render_cond_query, wait, &result);
+   if (b)
+      return result > 0;
+   else
+      return TRUE;
+}
+
+
 void softpipe_init_query_funcs(struct softpipe_context *softpipe )
 {
    softpipe->pipe.create_query = softpipe_create_query;
diff --git a/src/gallium/drivers/softpipe/sp_query.h b/src/gallium/drivers/softpipe/sp_query.h
index 05060a4575..736c033897 100644
--- a/src/gallium/drivers/softpipe/sp_query.h
+++ b/src/gallium/drivers/softpipe/sp_query.h
@@ -32,6 +32,10 @@
 #ifndef SP_QUERY_H
 #define SP_QUERY_H
 
+extern boolean
+softpipe_check_render_cond(struct softpipe_context *sp);
+
+
 struct softpipe_context;
 extern void softpipe_init_query_funcs(struct softpipe_context * );
 
diff --git a/src/gallium/include/pipe/p_context.h b/src/gallium/include/pipe/p_context.h
index 6c06fb9027..60fa9cef82 100644
--- a/src/gallium/include/pipe/p_context.h
+++ b/src/gallium/include/pipe/p_context.h
@@ -84,6 +84,14 @@ struct pipe_context {
                                    unsigned count);
    /*@}*/
 
+   /**
+    * Predicate subsequent rendering on occlusion query result
+    * \param query  the query predicate, or NULL if no predicate
+    * \param mode  one of PIPE_COND_RENDER_x
+    */
+   void (*render_condition)( struct pipe_context *pipe,
+                             struct pipe_query *query,
+                             uint mode );
 
    /**
     * Query objects
diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index 2cda408fec..c3b1e634ff 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -355,6 +355,15 @@ enum pipe_transfer_usage {
 
 
 /**
+ * Conditional rendering modes
+ */
+#define PIPE_RENDER_COND_WAIT              0
+#define PIPE_RENDER_COND_NO_WAIT           1
+#define PIPE_RENDER_COND_BY_REGION_WAIT    2
+#define PIPE_RENDER_COND_BY_REGION_NO_WAIT 3
+
+
+/**
  * Point sprite coord modes
  */
 #define PIPE_SPRITE_COORD_NONE       0
diff --git a/src/mesa/SConscript b/src/mesa/SConscript
index 7035bdc634..9c933adcf7 100644
--- a/src/mesa/SConscript
+++ b/src/mesa/SConscript
@@ -162,6 +162,7 @@ if env['platform'] != 'winddk':
 		'state_tracker/st_cb_blit.c',
 		'state_tracker/st_cb_bufferobjects.c',
 		'state_tracker/st_cb_clear.c',
+		'state_tracker/st_cb_condrender.c',
 		'state_tracker/st_cb_flush.c',
 		'state_tracker/st_cb_drawpixels.c',
 		'state_tracker/st_cb_fbo.c',
diff --git a/src/mesa/sources.mak b/src/mesa/sources.mak
index ba56df5418..bd1fe9bc4b 100644
--- a/src/mesa/sources.mak
+++ b/src/mesa/sources.mak
@@ -191,6 +191,7 @@ STATETRACKER_SOURCES = \
 	state_tracker/st_cb_blit.c \
 	state_tracker/st_cb_bufferobjects.c \
 	state_tracker/st_cb_clear.c \
+	state_tracker/st_cb_condrender.c \
 	state_tracker/st_cb_flush.c \
 	state_tracker/st_cb_drawpixels.c \
 	state_tracker/st_cb_fbo.c \
diff --git a/src/mesa/state_tracker/st_cb_condrender.c b/src/mesa/state_tracker/st_cb_condrender.c
new file mode 100644
index 0000000000..780b40c206
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_condrender.c
@@ -0,0 +1,95 @@
+/**************************************************************************
+ * 
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+
+/**
+ * glBegin/EndCondtionalRender functions
+ *
+ * \author Brian Paul
+ */
+
+
+#include "main/imports.h"
+#include "main/context.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "st_context.h"
+#include "st_cb_queryobj.h"
+#include "st_cb_condrender.h"
+
+
+/**
+ * Called via ctx->Driver.BeginConditionalRender()
+ */
+static void
+st_BeginConditionalRender(GLcontext *ctx, struct gl_query_object *q,
+                          GLenum mode)
+{
+   struct st_query_object *stq = st_query_object(q);
+   struct pipe_context *pipe = ctx->st->pipe;
+   uint m;
+
+   switch (mode) {
+   case GL_QUERY_WAIT:
+      m = PIPE_RENDER_COND_WAIT;
+      break;
+   case GL_QUERY_NO_WAIT:
+      m = PIPE_RENDER_COND_NO_WAIT;
+      break;
+   case GL_QUERY_BY_REGION_WAIT:
+      m = PIPE_RENDER_COND_BY_REGION_WAIT;
+      break;
+   case GL_QUERY_BY_REGION_NO_WAIT:
+      m = PIPE_RENDER_COND_BY_REGION_NO_WAIT;
+      break;
+   default:
+      assert(0 && "bad mode in st_BeginConditionalRender");
+   }
+
+   pipe->render_condition(pipe, stq->pq, m);
+}
+
+
+/**
+ * Called via ctx->Driver.BeginConditionalRender()
+ */
+static void
+st_EndConditionalRender(GLcontext *ctx, struct gl_query_object *q)
+{
+   struct pipe_context *pipe = ctx->st->pipe;
+   (void) q;
+   pipe->render_condition(pipe, NULL, 0);
+}
+
+
+
+void st_init_cond_render_functions(struct dd_function_table *functions)
+{
+   functions->BeginConditionalRender = st_BeginConditionalRender;
+   functions->EndConditionalRender = st_EndConditionalRender;
+}
diff --git a/src/mesa/state_tracker/st_cb_condrender.h b/src/mesa/state_tracker/st_cb_condrender.h
new file mode 100644
index 0000000000..891f1cbcd8
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_condrender.h
@@ -0,0 +1,35 @@
+/**************************************************************************
+ * 
+ * Copyright 2009 VMware, Inc.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+#ifndef ST_CB_CONDRENDER_H
+#define ST_CB_CONDRENDER_H
+
+
+extern void st_init_cond_render_functions(struct dd_function_table *functions);
+
+
+#endif
diff --git a/src/mesa/state_tracker/st_cb_queryobj.c b/src/mesa/state_tracker/st_cb_queryobj.c
index dcf4c38eb6..10629e9225 100644
--- a/src/mesa/state_tracker/st_cb_queryobj.c
+++ b/src/mesa/state_tracker/st_cb_queryobj.c
@@ -44,23 +44,6 @@
 #include "st_public.h"
 
 
-struct st_query_object
-{
-   struct gl_query_object base;
-   struct pipe_query *pq;
-};
-
-
-/**
- * Cast wrapper
- */
-static struct st_query_object *
-st_query_object(struct gl_query_object *q)
-{
-   return (struct st_query_object *) q;
-}
-
-
 static struct gl_query_object *
 st_NewQueryObject(GLcontext *ctx, GLuint id)
 {
diff --git a/src/mesa/state_tracker/st_cb_queryobj.h b/src/mesa/state_tracker/st_cb_queryobj.h
index 9220a212b6..fa256b7182 100644
--- a/src/mesa/state_tracker/st_cb_queryobj.h
+++ b/src/mesa/state_tracker/st_cb_queryobj.h
@@ -29,6 +29,27 @@
 #define ST_CB_QUERYOBJ_H
 
 
+/**
+ * Subclass of gl_query_object
+ */
+struct st_query_object
+{
+   struct gl_query_object base;
+   struct pipe_query *pq;
+};
+
+
+/**
+ * Cast wrapper
+ */
+static INLINE struct st_query_object *
+st_query_object(struct gl_query_object *q)
+{
+   return (struct st_query_object *) q;
+}
+
+
+
 extern void
 st_init_query_functions(struct dd_function_table *functions);
 
diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index d18a25ab51..e4f18c842c 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -43,6 +43,7 @@
 #include "st_cb_blit.h"
 #include "st_cb_bufferobjects.h"
 #include "st_cb_clear.h"
+#include "st_cb_condrender.h"
 #if FEATURE_drawpix
 #include "st_cb_drawpixels.h"
 #include "st_cb_rasterpos.h"
@@ -337,6 +338,7 @@ void st_init_driver_functions(struct dd_function_table *functions)
 #if FEATURE_queryobj
    st_init_query_functions(functions);
 #endif
+   st_init_cond_render_functions(functions);
    st_init_readpixels_functions(functions);
    st_init_texture_functions(functions);
    st_init_flush_functions(functions);
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index ef3cbc53ee..35e08749df 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -306,4 +306,8 @@ void st_init_extensions(struct st_context *st)
       /* we support always support GL_EXT_framebuffer_blit */
       ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
    }
+
+   if (st->pipe->render_condition) {
+      ctx->Extensions.NV_conditional_render = GL_TRUE;
+   }
 }