i915: Use L8A8 instead of I8 to simulate A8 on gen2

[mesa.git] / src / mesa / main / texformat.c

diff --git a/src/mesa/main/texformat.c b/src/mesa/main/texformat.c
index 832e66128d81de3eb326de4f54f236fd1609ffd5..ec16af9d2a19a3c2f43fa5b1c70b52768ece9d8c 100644 (file)
--- a/src/mesa/main/texformat.c
+++ b/src/mesa/main/texformat.c
@@ -155,12 +155,14 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
    case GL_ALPHA4:
    case GL_ALPHA8:
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
       break;
 
    case GL_ALPHA12:
    case GL_ALPHA16:
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM16);
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
       break;
 
    /* Luminance formats */
@@ -224,6 +226,7 @@ _mesa_choose_tex_format(struct gl_context *ctx, GLenum target,
 
    case GL_COMPRESSED_ALPHA_ARB:
       RETURN_IF_SUPPORTED(MESA_FORMAT_A_UNORM8);
+      RETURN_IF_SUPPORTED(MESA_FORMAT_L8A8_UNORM);
       break;
    case GL_COMPRESSED_LUMINANCE_ARB:
       RETURN_IF_SUPPORTED(MESA_FORMAT_L_UNORM8);