gallium: fixes for srgb, new srgb formats

add some more srgb texture formats, including compressed ones
various fixes relating to srgb formats

issues: the util code for generating mipmaps will not handle srgb formats
        correctly (would need to use a linear->srgb conversion shader)

5 files changed, 132 insertions, 19 deletions

diff --git a/src/gallium/auxiliary/util/p_debug.c b/src/gallium/auxiliary/util/p_debug.c
index 210332f87a..acdfa211c8 100644
--- a/src/gallium/auxiliary/util/p_debug.c
+++ b/src/gallium/auxiliary/util/p_debug.c
@@ -1,6 +1,7 @@
 /**************************************************************************
  * 
  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright (c) 2008 VMware, Inc.
  * All Rights Reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -533,16 +534,24 @@ static const struct debug_named_value pipe_format_names[] = {
    DEBUG_NAMED_VALUE(PIPE_FORMAT_R8G8B8A8_SSCALED),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_R8G8B8X8_SSCALED),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_L8_SRGB),
-   DEBUG_NAMED_VALUE(PIPE_FORMAT_A8_L8_SRGB),
+   DEBUG_NAMED_VALUE(PIPE_FORMAT_A8L8_SRGB),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_R8G8B8_SRGB),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_R8G8B8A8_SRGB),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_R8G8B8X8_SRGB),
+   DEBUG_NAMED_VALUE(PIPE_FORMAT_A8R8G8B8_SRGB),
+   DEBUG_NAMED_VALUE(PIPE_FORMAT_X8R8G8B8_SRGB),
+   DEBUG_NAMED_VALUE(PIPE_FORMAT_B8G8R8A8_SRGB),
+   DEBUG_NAMED_VALUE(PIPE_FORMAT_B8G8R8X8_SRGB),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_X8UB8UG8SR8S_NORM),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_B6UG5SR5S_NORM),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_DXT1_RGB),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_DXT1_RGBA),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_DXT3_RGBA),
    DEBUG_NAMED_VALUE(PIPE_FORMAT_DXT5_RGBA),
+   DEBUG_NAMED_VALUE(PIPE_FORMAT_DXT1_SRGB),
+   DEBUG_NAMED_VALUE(PIPE_FORMAT_DXT1_SRGBA),
+   DEBUG_NAMED_VALUE(PIPE_FORMAT_DXT3_SRGBA),
+   DEBUG_NAMED_VALUE(PIPE_FORMAT_DXT5_SRGBA),
 #endif
    DEBUG_NAMED_VALUE_END
 };
diff --git a/src/gallium/include/pipe/p_format.h b/src/gallium/include/pipe/p_format.h
index 97a4c8c510..6bd55d7735 100644
--- a/src/gallium/include/pipe/p_format.h
+++ b/src/gallium/include/pipe/p_format.h
@@ -1,6 +1,7 @@
 /**************************************************************************
  * 
  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright (c) 2008 VMware, Inc.
  * All Rights Reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -245,13 +246,14 @@ static INLINE uint pf_rev(pipe_format_ycbcr_t f)
 /**
   * Compresssed format layouts (this will probably change)
   */
-#define _PIPE_FORMAT_DXT( LEVEL, RSIZE, GSIZE, BSIZE, ASIZE ) \
+#define _PIPE_FORMAT_DXT( LEVEL, RSIZE, GSIZE, BSIZE, ASIZE, TYPE ) \
    ((PIPE_FORMAT_LAYOUT_DXT << 0) | \
     ((LEVEL) << 2) | \
     ((RSIZE) << 5) | \
     ((GSIZE) << 8) | \
     ((BSIZE) << 11) | \
-    ((ASIZE) << 14) )
+    ((ASIZE) << 14) | \
+    ((TYPE) << 29))
 
 
 
@@ -360,20 +362,30 @@ enum pipe_format {
    PIPE_FORMAT_R32G32B32A32_FIXED    = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_RGBA, 4, 4, 4, 4, PIPE_FORMAT_TYPE_FIXED ),
    /* sRGB formats */
    PIPE_FORMAT_L8_SRGB               = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_RRR1, 1, 1, 1, 0, PIPE_FORMAT_TYPE_SRGB ),
-   PIPE_FORMAT_A8_L8_SRGB            = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_RRRG, 1, 1, 1, 1, PIPE_FORMAT_TYPE_SRGB ),
+   PIPE_FORMAT_A8L8_SRGB             = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_RRRG, 1, 1, 1, 1, PIPE_FORMAT_TYPE_SRGB ),
    PIPE_FORMAT_R8G8B8_SRGB           = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_RGB1, 1, 1, 1, 0, PIPE_FORMAT_TYPE_SRGB ),
    PIPE_FORMAT_R8G8B8A8_SRGB         = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_RGBA, 1, 1, 1, 1, PIPE_FORMAT_TYPE_SRGB ),
    PIPE_FORMAT_R8G8B8X8_SRGB         = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_RGB1, 1, 1, 1, 1, PIPE_FORMAT_TYPE_SRGB ),
+   PIPE_FORMAT_A8R8G8B8_SRGB         = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_ARGB, 1, 1, 1, 1, PIPE_FORMAT_TYPE_SRGB ),
+   PIPE_FORMAT_X8R8G8B8_SRGB         = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_1RGB, 1, 1, 1, 1, PIPE_FORMAT_TYPE_SRGB ),
+   PIPE_FORMAT_B8G8R8A8_SRGB         = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_BGRA, 1, 1, 1, 1, PIPE_FORMAT_TYPE_SRGB ),
+   PIPE_FORMAT_B8G8R8X8_SRGB         = _PIPE_FORMAT_RGBAZS_8 ( _PIPE_FORMAT_BGR1, 1, 1, 1, 1, PIPE_FORMAT_TYPE_SRGB ),
 
    /* mixed formats */
    PIPE_FORMAT_X8UB8UG8SR8S_NORM     = _PIPE_FORMAT_MIXED( _PIPE_FORMAT_1BGR, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1 ),
    PIPE_FORMAT_B6UG5SR5S_NORM        = _PIPE_FORMAT_MIXED( _PIPE_FORMAT_BGR1, 6, 5, 5, 0, 0, 1, 1, 0, 1, 0 ),
 
    /* compressed formats */
-   PIPE_FORMAT_DXT1_RGB              = _PIPE_FORMAT_DXT( 1, 8, 8, 8, 0 ),
-   PIPE_FORMAT_DXT1_RGBA             = _PIPE_FORMAT_DXT( 1, 8, 8, 8, 8 ),
-   PIPE_FORMAT_DXT3_RGBA             = _PIPE_FORMAT_DXT( 3, 8, 8, 8, 8 ),
-   PIPE_FORMAT_DXT5_RGBA             = _PIPE_FORMAT_DXT( 5, 8, 8, 8, 8 )
+   PIPE_FORMAT_DXT1_RGB              = _PIPE_FORMAT_DXT( 1, 8, 8, 8, 0, PIPE_FORMAT_TYPE_UNORM ),
+   PIPE_FORMAT_DXT1_RGBA             = _PIPE_FORMAT_DXT( 1, 8, 8, 8, 8, PIPE_FORMAT_TYPE_UNORM ),
+   PIPE_FORMAT_DXT3_RGBA             = _PIPE_FORMAT_DXT( 3, 8, 8, 8, 8, PIPE_FORMAT_TYPE_UNORM ),
+   PIPE_FORMAT_DXT5_RGBA             = _PIPE_FORMAT_DXT( 5, 8, 8, 8, 8, PIPE_FORMAT_TYPE_UNORM ),
+
+   /* sRGB, compressed */
+   PIPE_FORMAT_DXT1_SRGB             = _PIPE_FORMAT_DXT( 1, 8, 8, 8, 0, PIPE_FORMAT_TYPE_SRGB ),
+   PIPE_FORMAT_DXT1_SRGBA            = _PIPE_FORMAT_DXT( 1, 8, 8, 8, 8, PIPE_FORMAT_TYPE_SRGB ),
+   PIPE_FORMAT_DXT3_SRGBA            = _PIPE_FORMAT_DXT( 3, 8, 8, 8, 8, PIPE_FORMAT_TYPE_SRGB ),
+   PIPE_FORMAT_DXT5_SRGBA            = _PIPE_FORMAT_DXT( 5, 8, 8, 8, 8, PIPE_FORMAT_TYPE_SRGB )
 };
 
 /**
@@ -477,12 +489,16 @@ pf_get_block(enum pipe_format format, struct pipe_format_block *block)
    switch(format) {
    case PIPE_FORMAT_DXT1_RGBA:
    case PIPE_FORMAT_DXT1_RGB:
+   case PIPE_FORMAT_DXT1_SRGBA:
+   case PIPE_FORMAT_DXT1_SRGB:
       block->size = 8;
       block->width = 4;
       block->height = 4;
       break;
    case PIPE_FORMAT_DXT3_RGBA:
    case PIPE_FORMAT_DXT5_RGBA:
+   case PIPE_FORMAT_DXT3_SRGBA:
+   case PIPE_FORMAT_DXT5_SRGBA:
       block->size = 16;
       block->width = 4;
       block->height = 4;
@@ -540,7 +556,7 @@ pf_has_alpha( enum pipe_format format )
       /* FIXME: pf_get_component_bits( PIPE_FORMAT_A8L8_UNORM, PIPE_FORMAT_COMP_A ) should not return 0 right? */
       if(format == PIPE_FORMAT_A8_UNORM || 
          format == PIPE_FORMAT_A8L8_UNORM || 
-         format == PIPE_FORMAT_A8_L8_SRGB)
+         format == PIPE_FORMAT_A8L8_SRGB)
          return TRUE;
       return pf_get_component_bits( format, PIPE_FORMAT_COMP_A ) ? TRUE : FALSE;
    case PIPE_FORMAT_LAYOUT_YCBCR:
@@ -550,6 +566,9 @@ pf_has_alpha( enum pipe_format format )
       case PIPE_FORMAT_DXT1_RGBA:
       case PIPE_FORMAT_DXT3_RGBA:
       case PIPE_FORMAT_DXT5_RGBA:
+      case PIPE_FORMAT_DXT1_SRGBA:
+      case PIPE_FORMAT_DXT3_SRGBA:
+      case PIPE_FORMAT_DXT5_SRGBA:
          return TRUE;
       default:
          return FALSE;
diff --git a/src/gallium/state_trackers/python/p_format.i b/src/gallium/state_trackers/python/p_format.i
index 51ad4bebcd..26fb12b387 100644
--- a/src/gallium/state_trackers/python/p_format.i
+++ b/src/gallium/state_trackers/python/p_format.i
@@ -1,6 +1,7 @@
 /**************************************************************************
  * 
  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright (c) 2008 VMware, Inc.
  * All Rights Reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -128,10 +129,14 @@ enum pipe_format {
    PIPE_FORMAT_R32G32B32A32_FIXED,
 
    PIPE_FORMAT_L8_SRGB,
-   PIPE_FORMAT_A8_L8_SRGB,
+   PIPE_FORMAT_A8L8_SRGB,
    PIPE_FORMAT_R8G8B8_SRGB,
    PIPE_FORMAT_R8G8B8A8_SRGB,
    PIPE_FORMAT_R8G8B8X8_SRGB,
+   PIPE_FORMAT_A8R8G8B8_SRGB,
+   PIPE_FORMAT_X8R8G8B8_SRGB,
+   PIPE_FORMAT_B8G8R8A8_SRGB,
+   PIPE_FORMAT_B8G8R8X8_SRGB,
 
    PIPE_FORMAT_X8UB8UG8SR8S_NORM,
    PIPE_FORMAT_B6UG5SR5S_NORM,
@@ -140,6 +145,11 @@ enum pipe_format {
    PIPE_FORMAT_DXT1_RGBA,
    PIPE_FORMAT_DXT3_RGBA,
    PIPE_FORMAT_DXT5_RGBA,
+
+   PIPE_FORMAT_DXT1_SRGB,
+   PIPE_FORMAT_DXT1_SRGBA,
+   PIPE_FORMAT_DXT3_SRGBA,
+   PIPE_FORMAT_DXT5_SRGBA,
 };
 
 
diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c
index d96899b611..5ff0c61147 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -1,6 +1,7 @@
 /**************************************************************************
  * 
  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright (c) 2008 VMware, Inc.
  * All Rights Reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -243,6 +244,9 @@ void st_init_extensions(struct st_context *st)
 
    if (screen->is_format_supported(screen, PIPE_FORMAT_R8G8B8A8_SRGB,
                                    PIPE_TEXTURE_2D, 
+                                   PIPE_TEXTURE_USAGE_SAMPLER, 0) ||
+      screen->is_format_supported(screen, PIPE_FORMAT_A8R8G8B8_SRGB,
+                                   PIPE_TEXTURE_2D, 
                                    PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
       ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
    }
diff --git a/src/mesa/state_tracker/st_format.c b/src/mesa/state_tracker/st_format.c
index a9387c05df..9e2d60c926 100644
--- a/src/mesa/state_tracker/st_format.c
+++ b/src/mesa/state_tracker/st_format.c
@@ -1,6 +1,7 @@
 /**************************************************************************
  * 
  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright (c) 2008 VMware, Inc.
  * All Rights Reserved.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a
@@ -263,6 +264,28 @@ st_mesa_format_to_pipe_format(GLuint mesaFormat)
       return PIPE_FORMAT_DXT3_RGBA;
    case MESA_FORMAT_RGBA_DXT5:
       return PIPE_FORMAT_DXT5_RGBA;
+#if FEATURE_EXT_texture_sRGB
+   case MESA_FORMAT_SRGB_DXT1:
+      return PIPE_FORMAT_DXT1_SRGB;
+   case MESA_FORMAT_SRGBA_DXT1:
+      return PIPE_FORMAT_DXT1_SRGBA;
+   case MESA_FORMAT_SRGBA_DXT3:
+      return PIPE_FORMAT_DXT3_SRGBA;
+   case MESA_FORMAT_SRGBA_DXT5:
+      return PIPE_FORMAT_DXT5_SRGBA;
+#endif
+#endif
+#if FEATURE_EXT_texture_sRGB
+   case MESA_FORMAT_SLA8:
+      return PIPE_FORMAT_A8L8_SRGB;
+   case MESA_FORMAT_SL8:
+      return PIPE_FORMAT_L8_SRGB;
+   case MESA_FORMAT_SRGB8:
+      return PIPE_FORMAT_R8G8B8_SRGB;
+   case MESA_FORMAT_SRGBA8:
+      return PIPE_FORMAT_R8G8B8A8_SRGB;
+   case MESA_FORMAT_SARGB8:
+      return PIPE_FORMAT_A8R8G8B8_SRGB;
 #endif
    default:
       assert(0);
@@ -294,6 +317,28 @@ default_rgba_format(struct pipe_screen *screen,
    return PIPE_FORMAT_NONE;
 }
 
+/**
+ * Find an sRGBA format supported by the context/winsys.
+ */
+static enum pipe_format
+default_srgba_format(struct pipe_screen *screen, 
+                    enum pipe_texture_target target,
+                    unsigned tex_usage, 
+                    unsigned geom_flags)
+{
+   static const enum pipe_format colorFormats[] = {
+      PIPE_FORMAT_A8R8G8B8_SRGB,
+      PIPE_FORMAT_B8G8R8A8_SRGB,
+      PIPE_FORMAT_R8G8B8A8_SRGB,
+   };
+   uint i;
+   for (i = 0; i < Elements(colorFormats); i++) {
+      if (screen->is_format_supported( screen, colorFormats[i], target, tex_usage, geom_flags )) {
+         return colorFormats[i];
+      }
+   }
+   return PIPE_FORMAT_NONE;
+}
 
 /**
  * Search list of formats for first RGBA format with >8 bits/channel.
@@ -515,28 +560,32 @@ st_choose_format(struct pipe_context *pipe, GLint internalFormat,
    case GL_SRGB_EXT:
    case GL_SRGB8_EXT:
    case GL_COMPRESSED_SRGB_EXT:
-   case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
+   case GL_COMPRESSED_SRGB_ALPHA_EXT:
    case GL_SRGB_ALPHA_EXT:
    case GL_SRGB8_ALPHA8_EXT:
-   case GL_COMPRESSED_SRGB_ALPHA_EXT:
+      return default_srgba_format( screen, target, tex_usage, geom_flags );
+   case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
+      return PIPE_FORMAT_DXT1_SRGB;
    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
+      return PIPE_FORMAT_DXT1_SRGBA;
    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT:
+      return PIPE_FORMAT_DXT3_SRGBA;
    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT:
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return PIPE_FORMAT_DXT5_SRGBA;
 
    case GL_SLUMINANCE_ALPHA_EXT:
    case GL_SLUMINANCE8_ALPHA8_EXT:
    case GL_COMPRESSED_SLUMINANCE_EXT:
    case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_A8L8_UNORM, target, tex_usage, geom_flags ))
-         return PIPE_FORMAT_A8L8_UNORM;
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      if (screen->is_format_supported( screen, PIPE_FORMAT_A8L8_SRGB, target, tex_usage, geom_flags ))
+         return PIPE_FORMAT_A8L8_SRGB;
+      return default_srgba_format( screen, target, tex_usage, geom_flags );
 
    case GL_SLUMINANCE_EXT:
    case GL_SLUMINANCE8_EXT:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_L8_UNORM, target, tex_usage, geom_flags ))
-         return PIPE_FORMAT_L8_UNORM;
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      if (screen->is_format_supported( screen, PIPE_FORMAT_L8_SRGB, target, tex_usage, geom_flags ))
+         return PIPE_FORMAT_L8_SRGB;
+      return default_srgba_format( screen, target, tex_usage, geom_flags );
 
    default:
       return PIPE_FORMAT_NONE;
@@ -617,6 +666,28 @@ translate_gallium_format_to_mesa_format(enum pipe_format format)
       return &_mesa_texformat_rgba_dxt3;
    case PIPE_FORMAT_DXT5_RGBA:
       return &_mesa_texformat_rgba_dxt5;
+#if FEATURE_EXT_texture_sRGB
+   case PIPE_FORMAT_DXT1_SRGB:
+      return &_mesa_texformat_srgb_dxt1;
+   case PIPE_FORMAT_DXT1_SRGBA:
+      return &_mesa_texformat_srgba_dxt1;
+   case PIPE_FORMAT_DXT3_SRGBA:
+      return &_mesa_texformat_srgba_dxt3;
+   case PIPE_FORMAT_DXT5_SRGBA:
+      return &_mesa_texformat_srgba_dxt5;
+#endif
+#endif
+#if FEATURE_EXT_texture_sRGB
+   case PIPE_FORMAT_A8L8_SRGB:
+      return &_mesa_texformat_sla8;
+   case PIPE_FORMAT_L8_SRGB:
+      return &_mesa_texformat_sl8;
+   case PIPE_FORMAT_R8G8B8_SRGB:
+      return &_mesa_texformat_srgb8;
+   case PIPE_FORMAT_R8G8B8A8_SRGB:
+      return &_mesa_texformat_srgba8;
+   case PIPE_FORMAT_A8R8G8B8_SRGB:
+      return &_mesa_texformat_sargb8;
 #endif
    /* XXX add additional cases */
    default: