r600g: improve supported format selection.

This fixes fbo-readpixels piglit test, and adds support for swapping
the formats. Not all formats are correct yet I don't think.

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

1 files changed, 39 insertions, 37 deletions

diff --git a/src/gallium/drivers/r600/r600_screen.c b/src/gallium/drivers/r600/r600_screen.c
index 68615ca162..4b87327a7c 100644
--- a/src/gallium/drivers/r600/r600_screen.c
+++ b/src/gallium/drivers/r600/r600_screen.c
@@ -32,6 +32,7 @@
 #include "r600_context.h"
 #include "r600_public.h"
 #include "r600_resource.h"
+#include "r600_state_inlines.h"
 
 static const char* r600_get_vendor(struct pipe_screen* pscreen)
 {
@@ -133,50 +134,51 @@ static boolean r600_is_format_supported(struct pipe_screen* screen,
 					enum pipe_format format,
 					enum pipe_texture_target target,
 					unsigned sample_count,
-					unsigned bindings,
+					unsigned usage,
 					unsigned geom_flags)
 {
+	unsigned retval = 0;
 	if (target >= PIPE_MAX_TEXTURE_TYPES) {
 		R600_ERR("r600: unsupported texture type %d\n", target);
 		return FALSE;
 	}
-	switch (format) {
-	case PIPE_FORMAT_B4G4R4A4_UNORM:
-	case PIPE_FORMAT_B5G6R5_UNORM:
-	case PIPE_FORMAT_B5G5R5A1_UNORM:
-	case PIPE_FORMAT_A8_UNORM:
-	case PIPE_FORMAT_L8_UNORM:
-	case PIPE_FORMAT_A8R8G8B8_SRGB:
-	case PIPE_FORMAT_R8G8B8A8_SRGB:
-	case PIPE_FORMAT_DXT1_RGB:
-	case PIPE_FORMAT_DXT1_RGBA:
-	case PIPE_FORMAT_DXT3_RGBA:
-	case PIPE_FORMAT_DXT5_RGBA:
-	case PIPE_FORMAT_UYVY:
-	case PIPE_FORMAT_L8_SRGB:
-	case PIPE_FORMAT_L8A8_SRGB:
-	case PIPE_FORMAT_L8A8_UNORM:
-	case PIPE_FORMAT_A8R8G8B8_UNORM:
-	case PIPE_FORMAT_X8R8G8B8_UNORM:
-	case PIPE_FORMAT_R8G8B8A8_UNORM:
-	case PIPE_FORMAT_R8G8B8X8_UNORM:
-	case PIPE_FORMAT_B8G8R8A8_UNORM:
-	case PIPE_FORMAT_B8G8R8X8_UNORM:
-	case PIPE_FORMAT_A8B8G8R8_SRGB:
-	case PIPE_FORMAT_B8G8R8A8_SRGB:
-	case PIPE_FORMAT_I8_UNORM:
-	case PIPE_FORMAT_Z16_UNORM:
-	case PIPE_FORMAT_X8Z24_UNORM:
-	case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
-	case PIPE_FORMAT_Z32_UNORM:
-	case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
-	case PIPE_FORMAT_Z24X8_UNORM:
-		return TRUE;
-	default:
-		/* Unknown format... */
-		break;
+
+	/* Multisample */
+	if (sample_count > 1)
+		return FALSE;
+
+	if ((usage & PIPE_BIND_SAMPLER_VIEW) &&
+	    r600_is_sampler_format_supported(format)) {
+		retval |= PIPE_BIND_SAMPLER_VIEW;
+	}
+
+	if ((usage & (PIPE_BIND_RENDER_TARGET |
+                  PIPE_BIND_DISPLAY_TARGET |
+                  PIPE_BIND_SCANOUT |
+                  PIPE_BIND_SHARED)) &&
+	    r600_is_colorbuffer_format_supported(format)) {
+		retval |= usage &
+			(PIPE_BIND_RENDER_TARGET |
+			 PIPE_BIND_DISPLAY_TARGET |
+			 PIPE_BIND_SCANOUT |
+			 PIPE_BIND_SHARED);
 	}
-	return FALSE;
+
+	if ((usage & PIPE_BIND_DEPTH_STENCIL) &&
+	    r600_is_zs_format_supported(format)) {
+		retval |= PIPE_BIND_DEPTH_STENCIL;
+	}
+
+	if ((usage & PIPE_BIND_VERTEX_BUFFER) &&
+	    r600_is_vertex_format_supported(format))
+		retval |= PIPE_BIND_VERTEX_BUFFER;
+
+	if (usage & PIPE_BIND_TRANSFER_READ)
+		retval |= PIPE_BIND_TRANSFER_READ;
+	if (usage & PIPE_BIND_TRANSFER_WRITE)
+		retval |= PIPE_BIND_TRANSFER_WRITE;
+
+	return retval == usage;
 }
 
 static void r600_destroy_screen(struct pipe_screen* pscreen)