Mesa (master): st/xa: Support format-changing copy.

[Thomas Hellstrom]

Module: Mesa
Branch: master
Commit: 642951fbcaa56a975422f7caddf6620f20d47721
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=642951fbcaa56a975422f7caddf6620f20d47721

Author: Thomas Hellstrom <thellstrom at vmware.com>
Date:   Mon Jun 20 23:46:03 2011 +0200

st/xa: Support format-changing copy.

Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>

---

 src/gallium/state_trackers/xa/xa_context.c  |   43 ++++++++++++++++++++++----
 src/gallium/state_trackers/xa/xa_priv.h     |   11 +++++++
 src/gallium/state_trackers/xa/xa_renderer.c |   12 ++++----
 3 files changed, 53 insertions(+), 13 deletions(-)

diff --git a/src/gallium/state_trackers/xa/xa_context.c b/src/gallium/state_trackers/xa/xa_context.c
index 5ac16a2..a6abd8c 100644
--- a/src/gallium/state_trackers/xa/xa_context.c
+++ b/src/gallium/state_trackers/xa/xa_context.c
@@ -31,6 +31,7 @@
 #include "cso_cache/cso_context.h"
 #include "util/u_inlines.h"
 #include "util/u_rect.h"
+#include "util/u_surface.h"
 #include "pipe/p_context.h"
 
 
@@ -176,9 +177,28 @@ int
 xa_copy_prepare(struct xa_context *ctx,
 		struct xa_surface *dst, struct xa_surface *src)
 {
-    if (src == dst || src->tex->format != dst->tex->format)
+    if (src == dst || dst->srf != NULL)
 	return -XA_ERR_INVAL;
 
+    if (src->tex->format != dst->tex->format) {
+	struct pipe_screen *screen = ctx->pipe->screen;
+	struct pipe_surface srf_templ;
+
+	if (!screen->is_format_supported(screen,  dst->tex->format,
+					 PIPE_TEXTURE_2D, 0,
+					 PIPE_BIND_RENDER_TARGET))
+	    return -XA_ERR_INVAL;
+	u_surface_default_template(&srf_templ, dst->tex,
+				   PIPE_BIND_RENDER_TARGET);
+	dst->srf = ctx->pipe->create_surface(ctx->pipe, dst->tex, &srf_templ);
+	if (!dst->srf)
+	    return -XA_ERR_NORES;
+
+	renderer_copy_prepare(ctx, dst->srf, src->tex);
+	ctx->simple_copy = 0;
+    } else
+	ctx->simple_copy = 1;
+
     ctx->src = src;
     ctx->dst = dst;
 
@@ -191,17 +211,26 @@ xa_copy(struct xa_context *ctx,
 {
     struct pipe_box src_box;
 
-    u_box_2d(sx, sy, width, height, &src_box);
-    ctx->pipe->resource_copy_region(ctx->pipe,
-				    ctx->dst->tex, 0, dx, dy, 0, ctx->src->tex,
-				    0, &src_box);
-
+    if (ctx->simple_copy) {
+	u_box_2d(sx, sy, width, height, &src_box);
+	ctx->pipe->resource_copy_region(ctx->pipe,
+					ctx->dst->tex, 0, dx, dy, 0,
+					ctx->src->tex,
+					0, &src_box);
+    } else
+	renderer_copy(ctx, dx, dy, sx, sy, width, height,
+		      (float) width, (float) height);
 }
 
 void
 xa_copy_done(struct xa_context *ctx)
 {
-    ctx->pipe->flush(ctx->pipe, &ctx->last_fence);
+    if (!ctx->simple_copy) {
+	   renderer_draw_flush(ctx);
+	   ctx->pipe->flush(ctx->pipe, &ctx->last_fence);
+	   pipe_surface_reference(&ctx->dst->srf, NULL);
+    } else
+	ctx->pipe->flush(ctx->pipe, &ctx->last_fence);
 }
 
 struct xa_fence *
diff --git a/src/gallium/state_trackers/xa/xa_priv.h b/src/gallium/state_trackers/xa/xa_priv.h
index 57f2e3d..22a49c1 100644
--- a/src/gallium/state_trackers/xa/xa_priv.h
+++ b/src/gallium/state_trackers/xa/xa_priv.h
@@ -95,6 +95,7 @@ struct xa_context {
     struct pipe_fence_handle *last_fence;
     struct xa_surface *src;
     struct xa_surface *dst;
+    int simple_copy;
 };
 
 enum xa_vs_traits {
@@ -175,5 +176,15 @@ void renderer_bind_destination(struct xa_context *r,
 			       int height);
 
 void renderer_init_state(struct xa_context *r);
+void renderer_copy_prepare(struct xa_context *r,
+			   struct pipe_surface *dst_surface,
+			   struct pipe_resource *src_texture);
+void renderer_copy(struct xa_context *r, int dx,
+		   int dy,
+		   int sx,
+		   int sy,
+		   int width, int height, float src_width, float src_height);
+
+void renderer_draw_flush(struct xa_context *r);
 
 #endif
diff --git a/src/gallium/state_trackers/xa/xa_renderer.c b/src/gallium/state_trackers/xa/xa_renderer.c
index 4e42833..b92df0d 100644
--- a/src/gallium/state_trackers/xa/xa_renderer.c
+++ b/src/gallium/state_trackers/xa/xa_renderer.c
@@ -377,12 +377,12 @@ renderer_copy_prepare(struct xa_context *r,
 }
 
 void
-renderer_copy_pixmap(struct xa_context *r,
-		     int dx,
-		     int dy,
-		     int sx,
-		     int sy,
-		     int width, int height, float src_width, float src_height)
+renderer_copy(struct xa_context *r,
+	      int dx,
+	      int dy,
+	      int sx,
+	      int sy,
+	      int width, int height, float src_width, float src_height)
 {
     float s0, t0, s1, t1;
     float x0, y0, x1, y1;