Rework ProgramData to do less unnecessary work

[libs/gl.git] / source / pixelformat.cpp

diff --git a/source/pixelformat.cpp b/source/pixelformat.cpp
index 26600b33661fca3c7e73729702278f0aa4664feb..7647717a44ad3d047e7bfbc0d386a575f5564701 100644 (file)
--- a/source/pixelformat.cpp
+++ b/source/pixelformat.cpp
@@ -32,10 +32,18 @@ void operator>>(const LexicalConverter &conv, PixelFormat &fmt)
                fmt = BGR;
        else if(conv.get()=="BGRA")
                fmt = BGRA;
+       else if(conv.get()=="SRGB")
+               fmt = SRGB;
+       else if(conv.get()=="SRGB_ALPHA")
+               fmt = SRGB_ALPHA;
        else if(conv.get()=="LUMINANCE")
                fmt = LUMINANCE;
        else if(conv.get()=="LUMINANCE_ALPHA")
                fmt = LUMINANCE_ALPHA;
+       else if(conv.get()=="SLUMINANCE")
+               fmt = SLUMINANCE;
+       else if(conv.get()=="SLUMINANCE_ALPHA")
+               fmt = SLUMINANCE_ALPHA;
        else
                throw lexical_error(format("conversion of '%s' to PixelFormat", conv.get()));
 }
@@ -75,16 +83,40 @@ PixelFormat get_base_pixelformat(PixelFormat pf)
        {
        case RGB8:
        case RGB16F:
-       case RGB32F: return RGB;
+       case RGB32F:
+       case SRGB:
+       case SRGB8: return RGB;
        case RGBA8:
        case RGBA16F:
-       case RGBA32F: return RGBA;
+       case RGBA32F:
+       case SRGB_ALPHA:
+       case SRGB8_ALPHA8: return RGBA;
        case LUMINANCE8:
        case LUMINANCE16F:
-       case LUMINANCE32F: return LUMINANCE;
+       case LUMINANCE32F:
+       case SLUMINANCE:
+       case SLUMINANCE8: return LUMINANCE;
        case LUMINANCE_ALPHA8:
        case LUMINANCE_ALPHA16F:
-       case LUMINANCE_ALPHA32F: return LUMINANCE_ALPHA;
+       case LUMINANCE_ALPHA32F:
+       case SLUMINANCE_ALPHA:
+       case SLUMINANCE8_ALPHA8: return LUMINANCE_ALPHA;
+       default: return pf;
+       }
+}
+
+PixelFormat get_srgb_pixelformat(PixelFormat pf)
+{
+       switch(pf)
+       {
+       case RGB: return SRGB;
+       case RGBA: return SRGB_ALPHA;
+       case RGB8: return SRGB8;
+       case RGBA8: return SRGB8_ALPHA8;
+       case LUMINANCE: return SLUMINANCE;
+       case LUMINANCE8: return SLUMINANCE8;
+       case LUMINANCE_ALPHA: return SLUMINANCE_ALPHA;
+       case LUMINANCE_ALPHA8: return SLUMINANCE8_ALPHA8;
        default: return pf;
        }
 }
@@ -100,8 +132,10 @@ unsigned get_component_count(PixelFormat pf)
        case GREEN:
        case BLUE:
        case LUMINANCE:
+       case SLUMINANCE:
                return 1;
        case LUMINANCE_ALPHA:
+       case SLUMINANCE_ALPHA:
                return 2;
        case RGB:
        case BGR:
@@ -114,6 +148,30 @@ unsigned get_component_count(PixelFormat pf)
        }
 }
 
+unsigned get_component_size(PixelFormat pf)
+{
+       switch(pf)
+       {
+       case RGB16F:
+       case RGBA16F:
+       case LUMINANCE16F:
+       case LUMINANCE_ALPHA16F:
+               return 2;
+       case RGB32F:
+       case RGBA32F:
+       case LUMINANCE32F:
+       case LUMINANCE_ALPHA32F:
+               return 4;
+       default:
+               return 1;
+       }
+}
+
+unsigned get_pixel_size(PixelFormat pf)
+{
+       return get_component_count(pf)*get_component_size(pf);
+}
+
 void require_pixelformat(PixelFormat pf)
 {
        switch(pf)
@@ -128,6 +186,16 @@ void require_pixelformat(PixelFormat pf)
        case LUMINANCE_ALPHA32F:
                { static Require _req(ARB_texture_float); }
                break;
+       case SRGB:
+       case SRGB8:
+       case SRGB_ALPHA:
+       case SRGB8_ALPHA8:
+       case SLUMINANCE:
+       case SLUMINANCE8:
+       case SLUMINANCE_ALPHA:
+       case SLUMINANCE8_ALPHA8:
+               { static Require _req(EXT_texture_sRGB); }
+               break;
        case BGR:
        case BGRA:
                { static Require _req(EXT_bgra); }