r300g: add support for L8A8 colorbuffers

Blending with DST_ALPHA is undefined. SRC_ALPHA works, though. I bet some other formats have similar limitations too.
2010-10-02 23:13:12 +02:00
parent e75bce026c
commit 8f7177e0de
1 changed files with 3 additions and 0 deletions
@@ -369,6 +369,7 @@ static uint32_t r300_translate_colorformat(enum pipe_format format)
            return R300_COLOR_FORMAT_I8;

        /* 16-bit buffers. */
+        case PIPE_FORMAT_L8A8_UNORM:
        case PIPE_FORMAT_R8G8_UNORM:
        case PIPE_FORMAT_R8G8_SNORM:
            return R300_COLOR_FORMAT_UV88;
@@ -504,6 +505,8 @@ static uint32_t r300_translate_out_fmt(enum pipe_format format)

        /* 16-bit outputs, two channels.
         * COLORFORMAT_UV88 stores C2 and C0. */
+        case PIPE_FORMAT_L8A8_UNORM:
+            return modifier | R300_C0_SEL_A | R300_C2_SEL_R;
        case PIPE_FORMAT_R8G8_UNORM:
        case PIPE_FORMAT_R8G8_SNORM:
            return modifier | R300_C0_SEL_G | R300_C2_SEL_R;