gallium: Clean up driver clear() interface.

Only allows clearing currently bound buffers, but colour and depth/stencil in
a single call.

14 files changed, 79 insertions, 81 deletions

diff --git a/src/gallium/drivers/i915simple/i915_clear.c b/src/gallium/drivers/i915simple/i915_clear.c
index cde69daacc0..90530f2826f 100644
--- a/src/gallium/drivers/i915simple/i915_clear.c
+++ b/src/gallium/drivers/i915simple/i915_clear.c
@@ -25,23 +25,24 @@
  * 
  **************************************************************************/
 
-/* Author:
+/* Authors:
  *    Brian Paul
  */
 
 
-#include "pipe/p_defines.h"
+#include "util/u_clear.h"
 #include "i915_context.h"
 #include "i915_state.h"
 
 
 /**
- * Clear the given surface to the specified value.
+ * Clear the given buffers to the specified values.
  * No masking, no scissor (clear entire buffer).
  */
 void
-i915_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-	   unsigned clearValue)
+i915_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba,
+	   double depth, unsigned stencil)
 {
-   pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
+   util_clear(pipe, &i915_context(pipe)->framebuffer, buffers, rgba, depth,
+              stencil);
 }
diff --git a/src/gallium/drivers/i915simple/i915_context.h b/src/gallium/drivers/i915simple/i915_context.h
index 3cdabe45f9d..b6983ba86e7 100644
--- a/src/gallium/drivers/i915simple/i915_context.h
+++ b/src/gallium/drivers/i915simple/i915_context.h
@@ -314,8 +314,8 @@ void i915_emit_hardware_state(struct i915_context *i915 );
 /***********************************************************************
  * i915_clear.c: 
  */
-void i915_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-		unsigned clearValue);
+void i915_clear( struct pipe_context *pipe, unsigned buffers, const float *rgba,
+                 double depth, unsigned stencil);
 
 
 /***********************************************************************
diff --git a/src/gallium/drivers/nv10/nv10_clear.c b/src/gallium/drivers/nv10/nv10_clear.c
index be7e09cf4b0..a39a2b5f525 100644
--- a/src/gallium/drivers/nv10/nv10_clear.c
+++ b/src/gallium/drivers/nv10/nv10_clear.c
@@ -1,12 +1,14 @@
 #include "pipe/p_context.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_state.h"
+#include "util/u_clear.h"
 
 #include "nv10_context.h"
 
 void
-nv10_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-	   unsigned clearValue)
+nv10_clear(struct pipe_context *pipe, unsigned buffers,
+           const float *rgba, double depth, unsigned stencil)
 {
-	pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
+	util_clear(pipe, nv10_context(pipe)->framebuffer, buffers, rgba, depth,
+		   stencil);
 }
diff --git a/src/gallium/drivers/nv10/nv10_context.h b/src/gallium/drivers/nv10/nv10_context.h
index f3b56de25a7..f1e003c9537 100644
--- a/src/gallium/drivers/nv10/nv10_context.h
+++ b/src/gallium/drivers/nv10/nv10_context.h
@@ -118,8 +118,9 @@ extern void nv10_init_surface_functions(struct nv10_context *nv10);
 extern void nv10_screen_init_miptree_functions(struct pipe_screen *pscreen);
 
 /* nv10_clear.c */
-extern void nv10_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-		       unsigned clearValue);
+extern void nv10_clear(struct pipe_context *pipe, unsigned buffers,
+		       const float *rgba, double depth, unsigned stencil);
+
 
 /* nv10_draw.c */
 extern struct draw_stage *nv10_draw_render_stage(struct nv10_context *nv10);
diff --git a/src/gallium/drivers/nv20/nv20_clear.c b/src/gallium/drivers/nv20/nv20_clear.c
index 81b6f3e78ac..2b4490fa5e1 100644
--- a/src/gallium/drivers/nv20/nv20_clear.c
+++ b/src/gallium/drivers/nv20/nv20_clear.c
@@ -1,12 +1,14 @@
 #include "pipe/p_context.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_state.h"
+#include "util/u_clear.h"
 
 #include "nv20_context.h"
 
 void
-nv20_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-	   unsigned clearValue)
+nv20_clear(struct pipe_context *pipe, unsigned buffers,
+           const float *rgba, double depth, unsigned stencil)
 {
-	pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
+	util_clear(pipe, nv20_context(pipe)->framebuffer, buffers, rgba, depth,
+		   stencil);
 }
diff --git a/src/gallium/drivers/nv20/nv20_context.h b/src/gallium/drivers/nv20/nv20_context.h
index 8ad926db20a..fc932f1f90e 100644
--- a/src/gallium/drivers/nv20/nv20_context.h
+++ b/src/gallium/drivers/nv20/nv20_context.h
@@ -118,8 +118,8 @@ extern void nv20_init_surface_functions(struct nv20_context *nv20);
 extern void nv20_screen_init_miptree_functions(struct pipe_screen *pscreen);
 
 /* nv20_clear.c */
-extern void nv20_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-		       unsigned clearValue);
+extern void nv20_clear(struct pipe_context *pipe, unsigned buffers,
+		       const float *rgba, double depth, unsigned stencil);
 
 /* nv20_draw.c */
 extern struct draw_stage *nv20_draw_render_stage(struct nv20_context *nv20);
diff --git a/src/gallium/drivers/nv30/nv30_clear.c b/src/gallium/drivers/nv30/nv30_clear.c
index 71f413588ee..c4ba9266647 100644
--- a/src/gallium/drivers/nv30/nv30_clear.c
+++ b/src/gallium/drivers/nv30/nv30_clear.c
@@ -1,12 +1,14 @@
 #include "pipe/p_context.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_state.h"
+#include "util/u_clear.h"
 
 #include "nv30_context.h"
 
 void
-nv30_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-	   unsigned clearValue)
+nv30_clear(struct pipe_context *pipe, unsigned buffers,
+           const float *rgba, double depth, unsigned stencil)
 {
-	pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
+	util_clear(pipe, &nv30_context(pipe)->framebuffer, buffers, rgba, depth,
+		   stencil);
 }
diff --git a/src/gallium/drivers/nv30/nv30_context.h b/src/gallium/drivers/nv30/nv30_context.h
index b9337697008..4229c0a0e14 100644
--- a/src/gallium/drivers/nv30/nv30_context.h
+++ b/src/gallium/drivers/nv30/nv30_context.h
@@ -206,7 +206,7 @@ extern boolean nv30_draw_elements(struct pipe_context *pipe,
 				  unsigned count);
 
 /* nv30_clear.c */
-extern void nv30_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-		       unsigned clearValue);
+extern void nv30_clear(struct pipe_context *pipe, unsigned buffers,
+		       const float *rgba, double depth, unsigned stencil);
 
 #endif
diff --git a/src/gallium/drivers/nv40/nv40_clear.c b/src/gallium/drivers/nv40/nv40_clear.c
index 2c4e8f01fda..ddf13addf3b 100644
--- a/src/gallium/drivers/nv40/nv40_clear.c
+++ b/src/gallium/drivers/nv40/nv40_clear.c
@@ -1,12 +1,14 @@
 #include "pipe/p_context.h"
 #include "pipe/p_defines.h"
 #include "pipe/p_state.h"
+#include "util/u_clear.h"
 
 #include "nv40_context.h"
 
 void
-nv40_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-	   unsigned clearValue)
+nv40_clear(struct pipe_context *pipe, unsigned buffers,
+           const float *rgba, double depth, unsigned stencil)
 {
-	pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
+	util_clear(pipe, &nv40_context(pipe)->framebuffer, buffers, rgba, depth,
+		   stencil);
 }
diff --git a/src/gallium/drivers/nv40/nv40_context.h b/src/gallium/drivers/nv40/nv40_context.h
index adcfbdd85a8..97bc83292d4 100644
--- a/src/gallium/drivers/nv40/nv40_context.h
+++ b/src/gallium/drivers/nv40/nv40_context.h
@@ -227,7 +227,7 @@ extern boolean nv40_draw_elements(struct pipe_context *pipe,
 				  unsigned count);
 
 /* nv40_clear.c */
-extern void nv40_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-		       unsigned clearValue);
+extern void nv40_clear(struct pipe_context *pipe, unsigned buffers,
+		       const float *rgba, double depth, unsigned stencil);
 
 #endif
diff --git a/src/gallium/drivers/nv50/nv50_context.h b/src/gallium/drivers/nv50/nv50_context.h
index 313e435e7a5..7b67a754397 100644
--- a/src/gallium/drivers/nv50/nv50_context.h
+++ b/src/gallium/drivers/nv50/nv50_context.h
@@ -184,8 +184,8 @@ extern boolean nv50_draw_elements(struct pipe_context *pipe,
 extern void nv50_vbo_validate(struct nv50_context *nv50);
 
 /* nv50_clear.c */
-extern void nv50_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-		       unsigned clearValue);
+extern void nv50_clear(struct pipe_context *pipe, unsigned buffers,
+		       const float *rgba, double depth, unsigned stencil);
 
 /* nv50_program.c */
 extern void nv50_vertprog_validate(struct nv50_context *nv50);
diff --git a/src/gallium/drivers/softpipe/sp_clear.c b/src/gallium/drivers/softpipe/sp_clear.c
index a60c6c4c16f..f72c6c63e76 100644
--- a/src/gallium/drivers/softpipe/sp_clear.c
+++ b/src/gallium/drivers/softpipe/sp_clear.c
@@ -2,6 +2,7 @@
  * 
  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
  * All Rights Reserved.
+ * 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
@@ -27,6 +28,7 @@
 
 /* Author:
  *    Brian Paul
+ *    Michel Dänzer
  */
 
 
@@ -40,34 +42,15 @@
 
 
 /**
- * Convert packed pixel from one format to another.
- */
-static unsigned
-convert_color(enum pipe_format srcFormat, unsigned srcColor,
-              enum pipe_format dstFormat)
-{
-   ubyte r, g, b, a;
-   unsigned dstColor;
-
-   util_unpack_color_ub(srcFormat, &srcColor, &r, &g, &b, &a);
-   util_pack_color_ub(r, g, b, a, dstFormat, &dstColor);
-
-   return dstColor;
-}
-
-
-
-/**
- * Clear the given surface to the specified value.
+ * Clear the given buffers to the specified values.
  * No masking, no scissor (clear entire buffer).
- * Note: when clearing a color buffer, the clearValue is always
- * encoded as PIPE_FORMAT_A8R8G8B8_UNORM.
  */
 void
-softpipe_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-               unsigned clearValue)
+softpipe_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba,
+               double depth, unsigned stencil)
 {
    struct softpipe_context *softpipe = softpipe_context(pipe);
+   unsigned cv;
    uint i;
 
    if (softpipe->no_rast)
@@ -77,29 +60,29 @@ softpipe_clear(struct pipe_context *pipe, struct pipe_surface *ps,
    softpipe_update_derived(softpipe); /* not needed?? */
 #endif
 
-   if (ps == sp_tile_cache_get_surface(softpipe->zsbuf_cache)) {
-      sp_tile_cache_clear(softpipe->zsbuf_cache, clearValue);
-#if TILE_CLEAR_OPTIMIZATION
-      return;
-#endif
-   }
+   if (buffers & PIPE_CLEAR_COLOR) {
+      for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
+         struct pipe_surface *ps = softpipe->framebuffer.cbufs[i];
 
-   for (i = 0; i < softpipe->framebuffer.nr_cbufs; i++) {
-      if (ps == sp_tile_cache_get_surface(softpipe->cbuf_cache[i])) {
-         unsigned cv;
-         if (ps->format != PIPE_FORMAT_A8R8G8B8_UNORM) {
-            cv = convert_color(PIPE_FORMAT_A8R8G8B8_UNORM, clearValue,
-                               ps->format);
-         }
-         else {
-            cv = clearValue;
-         }
+         util_pack_color(rgba, ps->format, &cv);
          sp_tile_cache_clear(softpipe->cbuf_cache[i], cv);
+
+#if !TILE_CLEAR_OPTIMIZATION
+         /* non-cached surface */
+         pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, cv);
+#endif
       }
    }
 
+   if (buffers & PIPE_CLEAR_DEPTHSTENCIL) {
+      struct pipe_surface *ps = softpipe->framebuffer.zsbuf;
+
+      cv = util_pack_z_stencil(ps->format, depth, stencil);
+      sp_tile_cache_clear(softpipe->zsbuf_cache, cv);
+
 #if !TILE_CLEAR_OPTIMIZATION
-   /* non-cached surface */
-   pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, clearValue);
+      /* non-cached surface */
+      pipe->surface_fill(pipe, ps, 0, 0, ps->width, ps->height, cv);
 #endif
+      }
 }
diff --git a/src/gallium/drivers/softpipe/sp_clear.h b/src/gallium/drivers/softpipe/sp_clear.h
index a8ed1c4ecc4..2e450672f58 100644
--- a/src/gallium/drivers/softpipe/sp_clear.h
+++ b/src/gallium/drivers/softpipe/sp_clear.h
@@ -36,8 +36,8 @@
 struct pipe_context;
 
 extern void
-softpipe_clear(struct pipe_context *pipe, struct pipe_surface *ps,
-               unsigned clearValue);
+softpipe_clear(struct pipe_context *pipe, unsigned buffers, const float *rgba,
+               double depth, unsigned stencil);
 
 
 #endif /* SP_CLEAR_H */
diff --git a/src/gallium/drivers/trace/tr_context.c b/src/gallium/drivers/trace/tr_context.c
index b69ed2cb526..6e86a5dfddf 100644
--- a/src/gallium/drivers/trace/tr_context.c
+++ b/src/gallium/drivers/trace/tr_context.c
@@ -973,21 +973,26 @@ trace_context_surface_fill(struct pipe_context *_pipe,
 
 static INLINE void
 trace_context_clear(struct pipe_context *_pipe,
-                    struct pipe_surface *surface,
-                    unsigned clearValue)
+                    unsigned surfaces,
+                    const float *rgba,
+                    double depth,
+                    unsigned stencil)
 {
    struct trace_context *tr_ctx = trace_context(_pipe);
    struct pipe_context *pipe = tr_ctx->pipe;
 
-   surface = trace_surface_unwrap(tr_ctx, surface);
-
    trace_dump_call_begin("pipe_context", "clear");
 
    trace_dump_arg(ptr, pipe);
-   trace_dump_arg(ptr, surface);
-   trace_dump_arg(uint, clearValue);
-
-   pipe->clear(pipe, surface, clearValue);;
+   trace_dump_arg(uint, surfaces);
+   trace_dump_arg(float, rgba[0]);
+   trace_dump_arg(float, rgba[1]);
+   trace_dump_arg(float, rgba[2]);
+   trace_dump_arg(float, rgba[3]);
+   trace_dump_arg(float, depth);
+   trace_dump_arg(uint, stencil);
+
+   pipe->clear(pipe, surfaces, rgba, depth, stencil);
 
    trace_dump_call_end();
 }