X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fformats.c;h=b8fed182570a573ed03504457149064d6cbad8f7;hb=72f2551017e03f888d63fa9040120740c6d40620;hp=1bc72726e132955fd4b02db18c437e17e4f8e7f6;hpb=d92e56460e0b6b6057097fc12c7f947528e58c13;p=mesa.git

diff --git a/src/mesa/main/formats.c b/src/mesa/main/formats.c
index 1bc72726e13..b8fed182570 100644
--- a/src/mesa/main/formats.c
+++ b/src/mesa/main/formats.c
@@ -1091,6 +1091,48 @@ _mesa_get_format_color_encoding(gl_format format)
 }
 
 
+/**
+ * For an sRGB format, return the corresponding linear color space format.
+ * For non-sRGB formats, return the format as-is.
+ */
+gl_format
+_mesa_get_srgb_format_linear(gl_format format)
+{
+   switch (format) {
+   case MESA_FORMAT_SRGB8:
+      format = MESA_FORMAT_RGB888;
+      break;
+   case MESA_FORMAT_SRGBA8:
+      format = MESA_FORMAT_RGBA8888;
+      break;
+   case MESA_FORMAT_SARGB8:
+      format = MESA_FORMAT_ARGB8888;
+      break;
+   case MESA_FORMAT_SL8:
+      format = MESA_FORMAT_L8;
+      break;
+   case MESA_FORMAT_SLA8:
+      format = MESA_FORMAT_AL88;
+      break;
+   case MESA_FORMAT_SRGB_DXT1:
+      format = MESA_FORMAT_RGB_DXT1;
+      break;
+   case MESA_FORMAT_SRGBA_DXT1:
+      format = MESA_FORMAT_RGBA_DXT1;
+      break;
+   case MESA_FORMAT_SRGBA_DXT3:
+      format = MESA_FORMAT_RGBA_DXT3;
+      break;
+   case MESA_FORMAT_SRGBA_DXT5:
+      format = MESA_FORMAT_RGBA_DXT5;
+      break;
+   default:
+      break;
+   }
+   return format;
+}
+
+
 /**
  * Return number of bytes needed to store an image of the given size
  * in the given format.