1 files changed, 22 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915tex/intel_tex_format.c b/src/mesa/drivers/dri/i915tex/intel_tex_format.c
index 33281295dc..6e058dff69 100644
--- a/src/mesa/drivers/dri/i915tex/intel_tex_format.c
+++ b/src/mesa/drivers/dri/i915tex/intel_tex_format.c
@@ -148,3 +148,25 @@ intelChooseTextureFormat(GLcontext * ctx, GLint internalFormat,
 
    return NULL;                 /* never get here */
 }
+
+int intel_compressed_num_bytes(GLuint mesaFormat)
+{
+   int bytes = 0;
+   switch(mesaFormat) {
+     
+   case MESA_FORMAT_RGB_FXT1:
+   case MESA_FORMAT_RGBA_FXT1:
+   case MESA_FORMAT_RGB_DXT1:
+   case MESA_FORMAT_RGBA_DXT1:
+     bytes = 2;
+     break;
+     
+   case MESA_FORMAT_RGBA_DXT3:
+   case MESA_FORMAT_RGBA_DXT5:
+     bytes = 4;
+   default:
+     break;
+   }
+   
+   return bytes;
+}