radeon/r200/r300/r600: add is_format_renderable function

src/mesa/drivers/dri/r200/r200_context.c

@@ -266,6 +266,7 @@ static void r200_init_vtbl(radeonContextPtr radeon)
    radeon->vtbl.emit_query_finish = r200_emit_query_finish;
    radeon->vtbl.check_blit = r200_check_blit;
    radeon->vtbl.blit = r200_blit;
+   radeon->vtbl.is_format_renderable = radeonIsFormatRenderable;
 }
 
 

src/mesa/drivers/dri/r300/r300_context.c

@@ -321,6 +321,12 @@ static void r300_init_vtbl(radeonContextPtr radeon)
 
 	radeon->vtbl.check_blit = r300_check_blit;
 	radeon->vtbl.blit = r300_blit;
+
+	if (radeon->radeonScreen->chip_family >= CHIP_FAMILY_RV515) {
+		radeon->vtbl.is_format_renderable = r500IsFormatRenderable;
+	} else {
+		radeon->vtbl.is_format_renderable = r300IsFormatRenderable;
+	}
 }
 
 static void r300InitConstValues(GLcontext *ctx, radeonScreenPtr screen)

src/mesa/drivers/dri/r300/r300_tex.c

@@ -308,6 +308,45 @@ static struct gl_texture_object *r300NewTextureObject(GLcontext * ctx,
 	return &t->base;
 }
 
+unsigned r300IsFormatRenderable(gl_format mesa_format)
+{
+	switch (mesa_format)
+	{
+		case MESA_FORMAT_RGB565:
+		case MESA_FORMAT_RGBA5551:
+		case MESA_FORMAT_RGBA8888:
+		case MESA_FORMAT_RGB565_REV:
+		case MESA_FORMAT_RGBA8888_REV:
+		case MESA_FORMAT_ARGB4444:
+		case MESA_FORMAT_ARGB1555:
+		case MESA_FORMAT_XRGB8888:
+		case MESA_FORMAT_ARGB8888:
+		case MESA_FORMAT_ARGB4444_REV:
+		case MESA_FORMAT_ARGB1555_REV:
+		case MESA_FORMAT_XRGB8888_REV:
+		case MESA_FORMAT_ARGB8888_REV:
+		case MESA_FORMAT_SRGBA8:
+		case MESA_FORMAT_SARGB8:
+		case MESA_FORMAT_SL8:
+		case MESA_FORMAT_A8:
+		case MESA_FORMAT_L8:
+		case MESA_FORMAT_I8:
+		case MESA_FORMAT_Z16:
+			return 1;
+		default:
+			return 0;
+	}
+}
+
+unsigned r500IsFormatRenderable(gl_format mesa_format)
+{
+	if (mesa_format == MESA_FORMAT_S8_Z24) {
+		return 1;
+	} else {
+		return r300IsFormatRenderable(mesa_format);
+	}
+}
+
 void r300InitTextureFuncs(radeonContextPtr radeon, struct dd_function_table *functions)
 {
 	/* Note: we only plug in the functions we implement in the driver

src/mesa/drivers/dri/r300/r300_tex.h

@@ -53,4 +53,7 @@ extern void r300InitTextureFuncs(radeonContextPtr radeon, struct dd_function_tab
 
 int32_t r300TranslateTexFormat(gl_format mesaFormat);
 
+unsigned r300IsFormatRenderable(gl_format mesaFormat);
+unsigned r500IsFormatRenderable(gl_format mesaFormat);
+
 #endif				/* __r300_TEX_H__ */

src/mesa/drivers/dri/r600/r600_context.c

@@ -239,6 +239,7 @@ static void r600_init_vtbl(radeonContextPtr radeon)
 	radeon->vtbl.emit_query_finish = r600_emit_query_finish;
 	radeon->vtbl.check_blit = r600_check_blit;
 	radeon->vtbl.blit = r600_blit;
+	radeon->vtbl.is_format_renderable = radeonIsFormatRenderable;
 }
 
 static void r600InitConstValues(GLcontext *ctx, radeonScreenPtr screen)

src/mesa/drivers/dri/radeon/radeon_common_context.h

@@ -539,6 +539,7 @@ struct radeon_context {
                         unsigned reg_width,
                         unsigned reg_height,
                         unsigned flip_y);
+	   unsigned (*is_format_renderable)(gl_format mesa_format);
    } vtbl;
 };
 

src/mesa/drivers/dri/radeon/radeon_context.c

@@ -200,6 +200,7 @@ static void r100_init_vtbl(radeonContextPtr radeon)
    radeon->vtbl.emit_query_finish = r100_emit_query_finish;
    radeon->vtbl.check_blit = r100_check_blit;
    radeon->vtbl.blit = r100_blit;
+   radeon->vtbl.is_format_renderable = radeonIsFormatRenderable;
 }
 
 /* Create the device specific context.

src/mesa/drivers/dri/radeon/radeon_texture.c

@@ -1006,3 +1006,19 @@ void radeonTexSubImage3D(GLcontext * ctx, GLenum target, GLint level,
 	radeon_texsubimage(ctx, 3, target, level, xoffset, yoffset, zoffset, width, height, depth, 0,
 		format, type, pixels, packing, texObj, texImage, 0);
 }
+
+unsigned radeonIsFormatRenderable(gl_format mesa_format)
+{
+	if (mesa_format == _dri_texformat_argb8888 || mesa_format == _dri_texformat_rgb565 ||
+		mesa_format == _dri_texformat_argb1555 || mesa_format == _dri_texformat_argb4444)
+		return 1;
+
+	switch (mesa_format)
+	{
+		case MESA_FORMAT_Z16:
+		case MESA_FORMAT_S8_Z24:
+			return 1;
+		default:
+			return 0;
+	}
+}

src/mesa/drivers/dri/radeon/radeon_texture.h

@@ -135,4 +135,6 @@ void radeonCopyTexSubImage2D(GLcontext *ctx, GLenum target, GLint level,
 			GLint x, GLint y,
 			GLsizei width, GLsizei height);
 
+unsigned radeonIsFormatRenderable(gl_format mesa_format);
+
 #endif