gallium: move clear paths from rgba to a pointer to a color union (v2)

This moves the gallium interface for clears from using a pointer to 4 floats to a pointer to a union of float/unsigned/int values.

Notes:
1. the value is opaque.
2. only when the value is used should it be interpretered according to
the surface format it is going to be used with.
3. float clears on integer buffers and vice-versa are undefined.

v2: fixed up vega and graw, dropped hunks that shouldn't have been in
patch.

Signed-off-by: Dave Airlie <airlied@redhat.com>

3 files changed, 7 insertions, 6 deletions

diff --git a/src/gallium/drivers/nvfx/nvfx_clear.c b/src/gallium/drivers/nvfx/nvfx_clear.c
index 2be70fc..46f23e3 100644
--- a/src/gallium/drivers/nvfx/nvfx_clear.c
+++ b/src/gallium/drivers/nvfx/nvfx_clear.c
@@ -7,8 +7,8 @@
 
 void
 nvfx_clear(struct pipe_context *pipe, unsigned buffers,
-           const float *rgba, double depth, unsigned stencil)
+           const union pipe_color_union *color, double depth, unsigned stencil)
 {
-	util_clear(pipe, &nvfx_context(pipe)->framebuffer, buffers, rgba, depth,
+	util_clear(pipe, &nvfx_context(pipe)->framebuffer, buffers, color, depth,
 		   stencil);
 }
diff --git a/src/gallium/drivers/nvfx/nvfx_context.h b/src/gallium/drivers/nvfx/nvfx_context.h
index cb40a52..3d05ecc 100644
--- a/src/gallium/drivers/nvfx/nvfx_context.h
+++ b/src/gallium/drivers/nvfx/nvfx_context.h
@@ -238,7 +238,8 @@ nvfx_create(struct pipe_screen *pscreen, void *priv);
 
 /* nvfx_clear.c */
 extern void nvfx_clear(struct pipe_context *pipe, unsigned buffers,
-		       const float *rgba, double depth, unsigned stencil);
+                       const union pipe_color_union *color,
+                       double depth, unsigned stencil);
 
 /* nvfx_draw.c */
 extern struct draw_stage *nvfx_draw_render_stage(struct nvfx_context *nvfx);
diff --git a/src/gallium/drivers/nvfx/nvfx_surface.c b/src/gallium/drivers/nvfx/nvfx_surface.c
index 91ca1c3..d489bbf 100644
--- a/src/gallium/drivers/nvfx/nvfx_surface.c
+++ b/src/gallium/drivers/nvfx/nvfx_surface.c
@@ -478,19 +478,19 @@ nvfx_surface_flush(struct pipe_context* pipe, struct pipe_surface* surf)
 static void
 nvfx_clear_render_target(struct pipe_context *pipe,
 			 struct pipe_surface *dst,
-			 const float *rgba,
+			 const union pipe_color_union *color,
 			 unsigned dstx, unsigned dsty,
 			 unsigned width, unsigned height)
 {
 	union util_color uc;
-	util_pack_color(rgba, dst->format, &uc);
+	util_pack_color(color->f, dst->format, &uc);
 
 	if(util_format_get_blocksizebits(dst->format) > 32
 		|| nvfx_surface_fill(pipe, dst, dstx, dsty, width, height, uc.ui))
 	{
 		// TODO: probably should use hardware clear here instead if possible
 		struct blitter_context* blitter = nvfx_get_blitter(pipe, 0);
-		util_blitter_clear_render_target(blitter, dst, rgba, dstx, dsty, width, height);
+		util_blitter_clear_render_target(blitter, dst, color, dstx, dsty, width, height);
 		nvfx_put_blitter(pipe, blitter);
 	}
 }