i965: srgb texture fixes

i965 can either do SRGBA8_REV format or SARGB8 format, but not SRGBA8.
Could add SRGBA8_REV support to mesa, but simply use SARGB8 for now.
While here, also add true srgb luminance / luminance_alpha support -
unfortunately the published docs fail to mention which asics support
this, tested on g43 so assume this works on any g4x.

3 files changed, 27 insertions, 10 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_defines.h b/src/mesa/drivers/dri/i965/brw_defines.h
index 74dbba4fdd1..98fc909c2ad 100644
--- a/src/mesa/drivers/dri/i965/brw_defines.h
+++ b/src/mesa/drivers/dri/i965/brw_defines.h
@@ -367,9 +367,10 @@
 #define BRW_SURFACEFORMAT_L8A8_UNORM                     0x114 
 #define BRW_SURFACEFORMAT_I16_FLOAT                      0x115
 #define BRW_SURFACEFORMAT_L16_FLOAT                      0x116
-#define BRW_SURFACEFORMAT_A16_FLOAT                      0x117 
-#define BRW_SURFACEFORMAT_R5G5_SNORM_B6_UNORM            0x119 
-#define BRW_SURFACEFORMAT_B5G5R5X1_UNORM                 0x11A 
+#define BRW_SURFACEFORMAT_A16_FLOAT                      0x117
+#define BRW_SURFACEFORMAT_L8A8_UNORM_SRGB                0x118
+#define BRW_SURFACEFORMAT_R5G5_SNORM_B6_UNORM            0x119
+#define BRW_SURFACEFORMAT_B5G5R5X1_UNORM                 0x11A
 #define BRW_SURFACEFORMAT_B5G5R5X1_UNORM_SRGB            0x11B
 #define BRW_SURFACEFORMAT_R8G8_SSCALED                   0x11C
 #define BRW_SURFACEFORMAT_R8G8_USCALED                   0x11D
@@ -386,6 +387,7 @@
 #define BRW_SURFACEFORMAT_A4P4_UNORM                     0x148
 #define BRW_SURFACEFORMAT_R8_SSCALED                     0x149
 #define BRW_SURFACEFORMAT_R8_USCALED                     0x14A
+#define BRW_SURFACEFORMAT_L8_UNORM_SRGB                  0x14C
 #define BRW_SURFACEFORMAT_R1_UINT                        0x181 
 #define BRW_SURFACEFORMAT_YCRCB_NORMAL                   0x182 
 #define BRW_SURFACEFORMAT_YCRCB_SWAPUVY                  0x183 
diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
index 66ce9289558..2f1f4c55f94 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
@@ -140,8 +140,14 @@ static GLuint translate_tex_format( GLuint mesa_format, GLenum internal_format,
    case MESA_FORMAT_RGBA_DXT5:
        return BRW_SURFACEFORMAT_BC3_UNORM;
 
-   case MESA_FORMAT_SRGBA8:
-      return BRW_SURFACEFORMAT_R8G8B8A8_UNORM_SRGB;
+   case MESA_FORMAT_SARGB8:
+      return BRW_SURFACEFORMAT_B8G8R8A8_UNORM_SRGB;
+
+   case MESA_FORMAT_SLA8:
+      return BRW_SURFACEFORMAT_L8A8_UNORM_SRGB;
+
+   case MESA_FORMAT_SL8:
+      return BRW_SURFACEFORMAT_L8_UNORM_SRGB;
 
    case MESA_FORMAT_SRGB_DXT1:
       return BRW_SURFACEFORMAT_BC1_UNORM_SRGB;
diff --git a/src/mesa/drivers/dri/intel/intel_tex_format.c b/src/mesa/drivers/dri/intel/intel_tex_format.c
index ce33cdc218b..3322a711307 100644
--- a/src/mesa/drivers/dri/intel/intel_tex_format.c
+++ b/src/mesa/drivers/dri/intel/intel_tex_format.c
@@ -1,5 +1,6 @@
 #include "intel_context.h"
 #include "intel_tex.h"
+#include "intel_chipset.h"
 #include "main/texformat.h"
 #include "main/enums.h"
 
@@ -160,15 +161,23 @@ intelChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
    case GL_SRGB8_EXT:
    case GL_SRGB_ALPHA_EXT:
    case GL_SRGB8_ALPHA8_EXT:
-   case GL_SLUMINANCE_EXT:
-   case GL_SLUMINANCE8_EXT:
-   case GL_SLUMINANCE_ALPHA_EXT:
-   case GL_SLUMINANCE8_ALPHA8_EXT:
    case GL_COMPRESSED_SRGB_EXT:
    case GL_COMPRESSED_SRGB_ALPHA_EXT:
    case GL_COMPRESSED_SLUMINANCE_EXT:
    case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
-       return &_mesa_texformat_srgba8;
+      return &_mesa_texformat_sargb8;
+   case GL_SLUMINANCE_EXT:
+   case GL_SLUMINANCE8_EXT:
+      if (IS_G4X(intel->intelScreen->deviceID))
+         return &_mesa_texformat_sl8;
+      else
+         return &_mesa_texformat_sargb8;
+   case GL_SLUMINANCE_ALPHA_EXT:
+   case GL_SLUMINANCE8_ALPHA8_EXT:
+      if (IS_G4X(intel->intelScreen->deviceID))
+         return &_mesa_texformat_sla8;
+      else
+         return &_mesa_texformat_sargb8;
    case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT: