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>

1 files changed, 10 insertions, 7 deletions

diff --git a/src/gallium/drivers/i915/i915_clear.c b/src/gallium/drivers/i915/i915_clear.c
index 4f9aa2c..c682c06 100644
--- a/src/gallium/drivers/i915/i915_clear.c
+++ b/src/gallium/drivers/i915/i915_clear.c
@@ -41,7 +41,8 @@
 #include "i915_state.h"
 
 void
-i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
+i915_clear_emit(struct pipe_context *pipe, unsigned buffers,
+                const union pipe_color_union *color,
                 double depth, unsigned stencil,
                 unsigned destx, unsigned desty, unsigned width, unsigned height)
 {
@@ -60,13 +61,13 @@ i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
 
       clear_params |= CLEARPARAM_WRITE_COLOR;
       cbuf_tex = i915_texture(cbuf->texture);
-      util_pack_color(rgba, cbuf->format, &u_color);
+      util_pack_color(color->f, cbuf->format, &u_color);
       if (util_format_get_blocksize(cbuf_tex->b.b.format) == 4)
          clear_color = u_color.ui;
       else
          clear_color = (u_color.ui & 0xffff) | (u_color.ui << 16);
 
-      util_pack_color(rgba, cbuf->format, &u_color);
+      util_pack_color(color->f, cbuf->format, &u_color);
       clear_color8888 = u_color.ui;
    } else
       clear_color = clear_color8888 = 0;
@@ -135,15 +136,17 @@ i915_clear_emit(struct pipe_context *pipe, unsigned buffers, const float *rgba,
  * No masking, no scissor (clear entire buffer).
  */
 void
-i915_clear_blitter(struct pipe_context *pipe, unsigned buffers, const float *rgba,
+i915_clear_blitter(struct pipe_context *pipe, unsigned buffers,
+                   const union pipe_color_union *color,
                    double depth, unsigned stencil)
 {
-   util_clear(pipe, &i915_context(pipe)->framebuffer, buffers, rgba, depth,
+   util_clear(pipe, &i915_context(pipe)->framebuffer, buffers, color, depth,
               stencil);
 }
 
 void
-i915_clear_render(struct pipe_context *pipe, unsigned buffers, const float *rgba,
+i915_clear_render(struct pipe_context *pipe, unsigned buffers,
+                  const union pipe_color_union *color,
                   double depth, unsigned stencil)
 {
    struct i915_context *i915 = i915_context(pipe);
@@ -151,6 +154,6 @@ i915_clear_render(struct pipe_context *pipe, unsigned buffers, const float *rgba
    if (i915->dirty)
       i915_update_derived(i915);
 
-   i915_clear_emit(pipe, buffers, rgba, depth, stencil,
+   i915_clear_emit(pipe, buffers, color, depth, stencil,
                    0, 0, i915->framebuffer.width, i915->framebuffer.height);
 }