mesa: Remove SGI_color_matrix.
[mesa.git] / src / mesa / state_tracker / st_format.c
index c149c5cf0b81e8aa8aed47ff1a852e283eaa857d..1ed79524b2cc688c8de8a1d8f851d66782916b4a 100644 (file)
@@ -35,7 +35,6 @@
 #include "main/imports.h"
 #include "main/context.h"
 #include "main/texstore.h"
-#include "main/enums.h"
 #include "main/image.h"
 #include "main/macros.h"
 
@@ -78,7 +77,9 @@ st_format_datatype(enum pipe_format format)
          return GL_UNSIGNED_SHORT;
       }
       else if (format == PIPE_FORMAT_Z24_UNORM_S8_USCALED ||
-               format == PIPE_FORMAT_S8_USCALED_Z24_UNORM) {
+               format == PIPE_FORMAT_S8_USCALED_Z24_UNORM ||
+               format == PIPE_FORMAT_Z24X8_UNORM ||
+               format == PIPE_FORMAT_X8Z24_UNORM) {
          return GL_UNSIGNED_INT_24_8;
       }
       else {
@@ -311,13 +312,14 @@ find_supported_format(struct pipe_screen *screen,
                       const enum pipe_format formats[],
                       uint num_formats,
                       enum pipe_texture_target target,
-                      unsigned tex_usage, 
+                      unsigned sample_count,
+                      unsigned tex_usage,
                       unsigned geom_flags)
 {
    uint i;
    for (i = 0; i < num_formats; i++) {
       if (screen->is_format_supported(screen, formats[i], target,
-                                      tex_usage, geom_flags)) {
+                                      sample_count, tex_usage, geom_flags)) {
          return formats[i];
       }
    }
@@ -331,7 +333,8 @@ find_supported_format(struct pipe_screen *screen,
 static enum pipe_format
 default_rgba_format(struct pipe_screen *screen, 
                     enum pipe_texture_target target,
-                    unsigned tex_usage, 
+                    unsigned sample_count,
+                    unsigned tex_usage,
                     unsigned geom_flags)
 {
    static const enum pipe_format colorFormats[] = {
@@ -341,7 +344,7 @@ default_rgba_format(struct pipe_screen *screen,
       PIPE_FORMAT_B5G6R5_UNORM
    };
    return find_supported_format(screen, colorFormats, Elements(colorFormats),
-                                target, tex_usage, geom_flags);
+                                target, sample_count, tex_usage, geom_flags);
 }
 
 
@@ -351,7 +354,8 @@ default_rgba_format(struct pipe_screen *screen,
 static enum pipe_format
 default_rgb_format(struct pipe_screen *screen, 
                    enum pipe_texture_target target,
-                   unsigned tex_usage, 
+                   unsigned sample_count,
+                   unsigned tex_usage,
                    unsigned geom_flags)
 {
    static const enum pipe_format colorFormats[] = {
@@ -364,7 +368,7 @@ default_rgb_format(struct pipe_screen *screen,
       PIPE_FORMAT_B5G6R5_UNORM
    };
    return find_supported_format(screen, colorFormats, Elements(colorFormats),
-                                target, tex_usage, geom_flags);
+                                target, sample_count, tex_usage, geom_flags);
 }
 
 /**
@@ -373,7 +377,8 @@ default_rgb_format(struct pipe_screen *screen,
 static enum pipe_format
 default_srgba_format(struct pipe_screen *screen, 
                     enum pipe_texture_target target,
-                    unsigned tex_usage, 
+                    unsigned sample_count,
+                    unsigned tex_usage,
                     unsigned geom_flags)
 {
    static const enum pipe_format colorFormats[] = {
@@ -382,63 +387,83 @@ default_srgba_format(struct pipe_screen *screen,
       PIPE_FORMAT_A8B8G8R8_SRGB,
    };
    return find_supported_format(screen, colorFormats, Elements(colorFormats),
-                                target, tex_usage, geom_flags);
+                                target, sample_count, tex_usage, geom_flags);
 }
 
 
 /**
  * Given an OpenGL internalFormat value for a texture or surface, return
  * the best matching PIPE_FORMAT_x, or PIPE_FORMAT_NONE if there's no match.
+ * This is called during glTexImage2D, for example.
+ *
+ * The bindings parameter typically has PIPE_BIND_SAMPLER_VIEW set, plus
+ * either PIPE_BINDING_RENDER_TARGET or PIPE_BINDING_DEPTH_STENCIL if
+ * we want render-to-texture ability.
+ *
+ * \param internalFormat  the user value passed to glTexImage2D
  * \param target  one of PIPE_TEXTURE_x
- * \param tex_usage  either PIPE_BIND_RENDER_TARGET
- *                   or PIPE_BIND_SAMPLER_VIEW
+ * \param bindings  bitmask of PIPE_BIND_x flags.
  */
 enum pipe_format
 st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
-                 enum pipe_texture_target target, unsigned tex_usage)
+                 enum pipe_texture_target target, unsigned sample_count,
+                 unsigned bindings)
 {
-   unsigned geom_flags = 0;
+   unsigned geom_flags = 0; /* we don't care about POT vs. NPOT here, yet */
 
    switch (internalFormat) {
    case 4:
    case GL_RGBA:
-   case GL_COMPRESSED_RGBA:
    case GL_RGBA8:
    case GL_RGB10_A2:
    case GL_RGBA12:
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return default_rgba_format( screen, target, sample_count, bindings,
+                                  geom_flags );
    case 3:
    case GL_RGB:
-   case GL_COMPRESSED_RGB:
-      return default_rgb_format( screen, target, tex_usage, geom_flags );
+      return default_rgb_format( screen, target, sample_count, bindings,
+                                 geom_flags );
    case GL_RGBA16:
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return default_rgba_format( screen, target, sample_count, bindings,
+                                  geom_flags );
 
    case GL_RGBA4:
    case GL_RGBA2:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_B4G4R4A4_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported( screen, PIPE_FORMAT_B4G4R4A4_UNORM,
+                                       target, sample_count, bindings,
+                                       geom_flags ))
          return PIPE_FORMAT_B4G4R4A4_UNORM;
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return default_rgba_format( screen, target, sample_count, bindings,
+                                  geom_flags );
 
    case GL_RGB5_A1:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM,
+                                       target, sample_count, bindings,
+                                       geom_flags ))
          return PIPE_FORMAT_B5G5R5A1_UNORM;
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return default_rgba_format( screen, target, sample_count, bindings,
+                                  geom_flags );
 
    case GL_RGB8:
    case GL_RGB10:
    case GL_RGB12:
    case GL_RGB16:
-      return default_rgb_format( screen, target, tex_usage, geom_flags );
+      return default_rgb_format( screen, target, sample_count, bindings,
+                                 geom_flags );
 
    case GL_RGB5:
    case GL_RGB4:
    case GL_R3_G3_B2:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_B5G6R5_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported( screen, PIPE_FORMAT_B5G6R5_UNORM,
+                                       target, sample_count, bindings,
+                                       geom_flags ))
          return PIPE_FORMAT_B5G6R5_UNORM;
-      if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported( screen, PIPE_FORMAT_B5G5R5A1_UNORM,
+                                       target, sample_count, bindings,
+                                       geom_flags ))
          return PIPE_FORMAT_B5G5R5A1_UNORM;
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return default_rgba_format( screen, target, sample_count, bindings,
+                                  geom_flags );
 
    case GL_ALPHA:
    case GL_ALPHA4:
@@ -446,9 +471,11 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
    case GL_ALPHA12:
    case GL_ALPHA16:
    case GL_COMPRESSED_ALPHA:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_A8_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported( screen, PIPE_FORMAT_A8_UNORM, target,
+                                       sample_count, bindings, geom_flags ))
          return PIPE_FORMAT_A8_UNORM;
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return default_rgba_format( screen, target, sample_count, bindings,
+                                  geom_flags );
 
    case 1:
    case GL_LUMINANCE:
@@ -457,9 +484,11 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
    case GL_LUMINANCE12:
    case GL_LUMINANCE16:
    case GL_COMPRESSED_LUMINANCE:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_L8_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported( screen, PIPE_FORMAT_L8_UNORM, target,
+                                       sample_count, bindings, geom_flags ))
          return PIPE_FORMAT_L8_UNORM;
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return default_rgba_format( screen, target, sample_count, bindings,
+                                  geom_flags );
 
    case 2:
    case GL_LUMINANCE_ALPHA:
@@ -470,9 +499,11 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
    case GL_LUMINANCE12_ALPHA12:
    case GL_LUMINANCE16_ALPHA16:
    case GL_COMPRESSED_LUMINANCE_ALPHA:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_L8A8_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported( screen, PIPE_FORMAT_L8A8_UNORM, target,
+                                       sample_count, bindings, geom_flags ))
          return PIPE_FORMAT_L8A8_UNORM;
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return default_rgba_format( screen, target, sample_count, bindings,
+                                  geom_flags );
 
    case GL_INTENSITY:
    case GL_INTENSITY4:
@@ -480,36 +511,82 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
    case GL_INTENSITY12:
    case GL_INTENSITY16:
    case GL_COMPRESSED_INTENSITY:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_I8_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported( screen, PIPE_FORMAT_I8_UNORM, target,
+                                       sample_count, bindings, geom_flags ))
          return PIPE_FORMAT_I8_UNORM;
-      return default_rgba_format( screen, target, tex_usage, geom_flags );
+      return default_rgba_format( screen, target, sample_count, bindings,
+                                  geom_flags );
 
    case GL_YCBCR_MESA:
-      if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY,
-                                      target, tex_usage, geom_flags)) {
+      if (screen->is_format_supported(screen, PIPE_FORMAT_UYVY, target,
+                                      sample_count, bindings, geom_flags)) {
          return PIPE_FORMAT_UYVY;
       }
-      if (screen->is_format_supported(screen, PIPE_FORMAT_YUYV,
-                                      target, tex_usage, geom_flags)) {
+      if (screen->is_format_supported(screen, PIPE_FORMAT_YUYV, target,
+                                      sample_count, bindings, geom_flags)) {
          return PIPE_FORMAT_YUYV;
       }
       return PIPE_FORMAT_NONE;
 
+   case GL_COMPRESSED_RGB:
+      /* can only sample from compressed formats */
+      if (bindings & ~PIPE_BIND_SAMPLER_VIEW)
+         return PIPE_FORMAT_NONE;
+      else if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGB,
+                                           target, sample_count, bindings,
+                                           geom_flags))
+         return PIPE_FORMAT_DXT1_RGB;
+      else
+         return default_rgb_format(screen, target, sample_count, bindings,
+                                   geom_flags);
+
+   case GL_COMPRESSED_RGBA:
+      /* can only sample from compressed formats */
+      if (bindings & ~PIPE_BIND_SAMPLER_VIEW)
+         return PIPE_FORMAT_NONE;
+      else if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_RGBA,
+                                           target, sample_count, bindings,
+                                           geom_flags))
+         return PIPE_FORMAT_DXT3_RGBA;
+      else
+         return default_rgba_format(screen, target, sample_count, bindings,
+                                    geom_flags);
+
    case GL_RGB_S3TC:
    case GL_RGB4_S3TC:
    case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
-      return PIPE_FORMAT_DXT1_RGB;
+      if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGB,
+                                      target, sample_count, bindings,
+                                      geom_flags))
+         return PIPE_FORMAT_DXT1_RGB;
+      else
+         return PIPE_FORMAT_NONE;
 
    case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT:
-      return PIPE_FORMAT_DXT1_RGBA;
+      if (screen->is_format_supported(screen, PIPE_FORMAT_DXT1_RGBA,
+                                      target, sample_count, bindings,
+                                      geom_flags))
+         return PIPE_FORMAT_DXT1_RGBA;
+      else
+         return PIPE_FORMAT_NONE;
 
    case GL_RGBA_S3TC:
    case GL_RGBA4_S3TC:
    case GL_COMPRESSED_RGBA_S3TC_DXT3_EXT:
-      return PIPE_FORMAT_DXT3_RGBA;
+      if (screen->is_format_supported(screen, PIPE_FORMAT_DXT3_RGBA,
+                                      target, sample_count, bindings,
+                                      geom_flags))
+         return PIPE_FORMAT_DXT3_RGBA;
+      else
+         return PIPE_FORMAT_NONE;
 
    case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
-      return PIPE_FORMAT_DXT5_RGBA;
+      if (screen->is_format_supported(screen, PIPE_FORMAT_DXT5_RGBA,
+                                      target, sample_count, bindings,
+                                      geom_flags))
+         return PIPE_FORMAT_DXT5_RGBA;
+      else
+         return PIPE_FORMAT_NONE;
 
 #if 0
    case GL_COMPRESSED_RGB_FXT1_3DFX:
@@ -519,17 +596,21 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
 #endif
 
    case GL_DEPTH_COMPONENT16:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_Z16_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported(screen, PIPE_FORMAT_Z16_UNORM, target,
+                                      sample_count, bindings, geom_flags))
          return PIPE_FORMAT_Z16_UNORM;
       /* fall-through */
    case GL_DEPTH_COMPONENT24:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported(screen, PIPE_FORMAT_Z24_UNORM_S8_USCALED,
+                                      target, sample_count, bindings, geom_flags))
          return PIPE_FORMAT_Z24_UNORM_S8_USCALED;
-      if (screen->is_format_supported( screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported(screen, PIPE_FORMAT_S8_USCALED_Z24_UNORM,
+                                      target, sample_count, bindings, geom_flags))
          return PIPE_FORMAT_S8_USCALED_Z24_UNORM;
       /* fall-through */
    case GL_DEPTH_COMPONENT32:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_Z32_UNORM, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported(screen, PIPE_FORMAT_Z32_UNORM, target,
+                                      sample_count, bindings, geom_flags))
          return PIPE_FORMAT_Z32_UNORM;
       /* fall-through */
    case GL_DEPTH_COMPONENT:
@@ -541,7 +622,7 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
             PIPE_FORMAT_S8_USCALED_Z24_UNORM
          };
          return find_supported_format(screen, formats, Elements(formats),
-                                      target, tex_usage, geom_flags);
+                                      target, sample_count, bindings, geom_flags);
       }
 
    case GL_STENCIL_INDEX:
@@ -556,7 +637,7 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
             PIPE_FORMAT_S8_USCALED_Z24_UNORM
          };
          return find_supported_format(screen, formats, Elements(formats),
-                                      target, tex_usage, geom_flags);
+                                      target, sample_count, bindings, geom_flags);
       }
 
    case GL_DEPTH_STENCIL_EXT:
@@ -567,7 +648,7 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
             PIPE_FORMAT_S8_USCALED_Z24_UNORM
          };
          return find_supported_format(screen, formats, Elements(formats),
-                                      target, tex_usage, geom_flags);
+                                      target, sample_count, bindings, geom_flags);
       }
 
    case GL_SRGB_EXT:
@@ -576,7 +657,8 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
    case GL_COMPRESSED_SRGB_ALPHA_EXT:
    case GL_SRGB_ALPHA_EXT:
    case GL_SRGB8_ALPHA8_EXT:
-      return default_srgba_format( screen, target, tex_usage, geom_flags );
+      return default_srgba_format( screen, target, sample_count, bindings,
+                                   geom_flags );
    case GL_COMPRESSED_SRGB_S3TC_DXT1_EXT:
       return PIPE_FORMAT_DXT1_SRGB;
    case GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT:
@@ -590,15 +672,19 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
    case GL_SLUMINANCE8_ALPHA8_EXT:
    case GL_COMPRESSED_SLUMINANCE_EXT:
    case GL_COMPRESSED_SLUMINANCE_ALPHA_EXT:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_L8A8_SRGB, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported(screen, PIPE_FORMAT_L8A8_SRGB, target,
+                                      sample_count, bindings, geom_flags))
          return PIPE_FORMAT_L8A8_SRGB;
-      return default_srgba_format( screen, target, tex_usage, geom_flags );
+      return default_srgba_format( screen, target, sample_count, bindings,
+                                   geom_flags );
 
    case GL_SLUMINANCE_EXT:
    case GL_SLUMINANCE8_EXT:
-      if (screen->is_format_supported( screen, PIPE_FORMAT_L8_SRGB, target, tex_usage, geom_flags ))
+      if (screen->is_format_supported(screen, PIPE_FORMAT_L8_SRGB, target,
+                                      sample_count, bindings, geom_flags))
          return PIPE_FORMAT_L8_SRGB;
-      return default_srgba_format( screen, target, tex_usage, geom_flags );
+      return default_srgba_format( screen, target, sample_count, bindings,
+                                   geom_flags );
 
    default:
       return PIPE_FORMAT_NONE;
@@ -606,40 +692,20 @@ st_choose_format(struct pipe_screen *screen, GLenum internalFormat,
 }
 
 
-static GLboolean
-is_depth_or_stencil_format(GLenum internalFormat)
-{
-   switch (internalFormat) {
-   case GL_DEPTH_COMPONENT:
-   case GL_DEPTH_COMPONENT16:
-   case GL_DEPTH_COMPONENT24:
-   case GL_DEPTH_COMPONENT32:
-   case GL_STENCIL_INDEX:
-   case GL_STENCIL_INDEX1_EXT:
-   case GL_STENCIL_INDEX4_EXT:
-   case GL_STENCIL_INDEX8_EXT:
-   case GL_STENCIL_INDEX16_EXT:
-   case GL_DEPTH_STENCIL_EXT:
-   case GL_DEPTH24_STENCIL8_EXT:
-      return GL_TRUE;
-   default:
-      return GL_FALSE;
-   }
-}
-
 /**
  * Called by FBO code to choose a PIPE_FORMAT_ for drawing surfaces.
  */
 enum pipe_format
 st_choose_renderbuffer_format(struct pipe_screen *screen,
-                              GLenum internalFormat)
+                              GLenum internalFormat, unsigned sample_count)
 {
    uint usage;
-   if (is_depth_or_stencil_format(internalFormat))
+   if (_mesa_is_depth_or_stencil_format(internalFormat))
       usage = PIPE_BIND_DEPTH_STENCIL;
    else
       usage = PIPE_BIND_RENDER_TARGET;
-   return st_choose_format(screen, internalFormat, PIPE_TEXTURE_2D, usage);
+   return st_choose_format(screen, internalFormat, PIPE_TEXTURE_2D,
+                           sample_count, usage);
 }
 
 
@@ -667,12 +733,12 @@ st_ChooseTextureFormat(GLcontext *ctx, GLint internalFormat,
       bindings = PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET;
 
    pFormat = st_choose_format(screen, internalFormat,
-                              PIPE_TEXTURE_2D, bindings);
+                              PIPE_TEXTURE_2D, 0, bindings);
 
    if (pFormat == PIPE_FORMAT_NONE) {
       /* try choosing format again, this time without render target bindings */
       pFormat = st_choose_format(screen, internalFormat,
-                                 PIPE_TEXTURE_2D, PIPE_BIND_SAMPLER_VIEW);
+                                 PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
    }
 
    if (pFormat == PIPE_FORMAT_NONE) {
@@ -702,3 +768,36 @@ st_equal_formats(enum pipe_format pFormat, GLenum format, GLenum type)
       return GL_FALSE;
    }
 }
+
+GLboolean
+st_sampler_compat_formats(enum pipe_format format1, enum pipe_format format2)
+{
+   if (format1 == format2)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_B8G8R8A8_UNORM &&
+       format2 == PIPE_FORMAT_B8G8R8X8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_B8G8R8X8_UNORM &&
+       format2 == PIPE_FORMAT_B8G8R8A8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_A8B8G8R8_UNORM &&
+       format2 == PIPE_FORMAT_X8B8G8R8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_X8B8G8R8_UNORM &&
+       format2 == PIPE_FORMAT_A8B8G8R8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_A8R8G8B8_UNORM &&
+       format2 == PIPE_FORMAT_X8R8G8B8_UNORM)
+      return GL_TRUE;
+
+   if (format1 == PIPE_FORMAT_X8R8G8B8_UNORM &&
+       format2 == PIPE_FORMAT_A8R8G8B8_UNORM)
+      return GL_TRUE;
+
+   return GL_FALSE;
+}