r300g: add some texture formats

src/gallium/drivers/r300/r300_screen.c

@@ -197,6 +197,8 @@ static boolean check_tex_format(enum pipe_format format, uint32_t usage,
         case PIPE_FORMAT_DXT3_RGBA:
         case PIPE_FORMAT_DXT5_RGBA:
         case PIPE_FORMAT_YCBCR:
+        case PIPE_FORMAT_L8_UNORM:
+        case PIPE_FORMAT_A8L8_UNORM:
             retval = usage & PIPE_TEXTURE_USAGE_SAMPLER;
             break;
 

src/gallium/drivers/r300/r300_texture.h

@@ -85,6 +85,13 @@ static INLINE uint32_t r300_translate_texformat(enum pipe_format format)
         case PIPE_FORMAT_Z24S8_UNORM:
         case PIPE_FORMAT_Z24X8_UNORM:
             return R300_EASY_TX_FORMAT(X, X, X, X, W24_FP);
+
+        case PIPE_FORMAT_A8L8_UNORM:
+            return R300_EASY_TX_FORMAT(X, X, X, Y, Y8X8);
+
+        case PIPE_FORMAT_L8_UNORM:
+            return R300_EASY_TX_FORMAT(X, X, X, ONE, X8);
+
         default:
             debug_printf("r300: Implementation error: "
                 "Got unsupported texture format %s in %s\n",