mesa: implement new texture format ARGB2101010

Radeon GPUs do support GL_RGB10_A2.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/mesa/main/texfetch_tmp.h b/src/mesa/main/texfetch_tmp.h
index 2f583ed5223..c985de92908 100644
--- a/src/mesa/main/texfetch_tmp.h
+++ b/src/mesa/main/texfetch_tmp.h
@@ -810,6 +810,31 @@ static void store_texel_argb1555_rev(struct gl_texture_image *texImage,
 #endif
 
 
+/* MESA_FORMAT_ARGB2101010 ***************************************************/
+
+/* Fetch texel from 1D, 2D or 3D argb2101010 texture, return 4 GLchans */
+static void FETCH(f_argb2101010)( const struct gl_texture_image *texImage,
+                                  GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint *src = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   const GLuint s = *src;
+   texel[RCOMP] = ((s >> 20) & 0x3ff) * (1.0F / 1023.0F);
+   texel[GCOMP] = ((s >> 10) & 0x3ff) * (1.0F / 1023.0F);
+   texel[BCOMP] = ((s >>  0) & 0x3ff) * (1.0F / 1023.0F);
+   texel[ACOMP] = ((s >> 30) & 0x03) * (1.0F / 3.0F);
+}
+
+#if DIM == 3
+static void store_texel_argb2101010(struct gl_texture_image *texImage,
+                                    GLint i, GLint j, GLint k, const void *texel)
+{
+   const GLubyte *rgba = (const GLubyte *) texel;
+   GLuint *dst = TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   *dst = PACK_COLOR_2101010(rgba[ACOMP], rgba[RCOMP], rgba[GCOMP], rgba[BCOMP]);
+}
+#endif
+
+
 /* MESA_FORMAT_RG88 **********************************************************/
 
 /* Fetch texel from 1D, 2D or 3D rg88 texture, return 4 GLchans */