Rework ProgramData to do less unnecessary work

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

diff --git a/source/pixelformat.cpp b/source/pixelformat.cpp
index 027ae88c7fe1bb7c5e11290ef5133e3c143b8d05..7647717a44ad3d047e7bfbc0d386a575f5564701 100644 (file)
--- a/source/pixelformat.cpp
+++ b/source/pixelformat.cpp
@@ -105,6 +105,22 @@ PixelFormat get_base_pixelformat(PixelFormat 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;
+       }
+}
+
 unsigned get_component_count(PixelFormat pf)
 {
        switch(get_base_pixelformat(pf))
@@ -132,6 +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)