mesa: add MESA_FORMAT_RGBX8888 and MESA_FORMAT_RGBX8888_REV

MESA_FORMAT_RGBX8888_REV is one of the opaque pixel formats used on Android.
Thanks to texture-from-pixmap, drivers may actually see texture images with
this format on Android.

MESA_FORMAT_RGBX8888 is added only for completeness.

Reviewed-by: Brian Paul <[email protected]>

[olv: Move the new formats after MESA_FORMAT_ARGB8888_REV in gl_format.  I
      accidentally moved them to the wrong place when preparing the patch.]

2 files changed, 62 insertions, 0 deletions

diff --git a/src/mesa/swrast/s_texfetch.c b/src/mesa/swrast/s_texfetch.c
index a854c3efd24..bfa7da79d67 100644
--- a/src/mesa/swrast/s_texfetch.c
+++ b/src/mesa/swrast/s_texfetch.c
@@ -165,6 +165,20 @@ texfetch_funcs[MESA_FORMAT_COUNT] =
       store_texel_argb8888_rev
    },
    {
+      MESA_FORMAT_RGBX8888,
+      fetch_texel_1d_f_rgbx8888,
+      fetch_texel_2d_f_rgbx8888,
+      fetch_texel_3d_f_rgbx8888,
+      store_texel_rgbx8888
+   },
+   {
+      MESA_FORMAT_RGBX8888_REV,
+      fetch_texel_1d_f_rgbx8888_rev,
+      fetch_texel_2d_f_rgbx8888_rev,
+      fetch_texel_3d_f_rgbx8888_rev,
+      store_texel_rgbx8888_rev,
+   },
+   {
       MESA_FORMAT_XRGB8888,
       fetch_texel_1d_f_xrgb8888,
       fetch_texel_2d_f_xrgb8888,
diff --git a/src/mesa/swrast/s_texfetch_tmp.h b/src/mesa/swrast/s_texfetch_tmp.h
index 8b7e930f905..4ee05a5ea5a 100644
--- a/src/mesa/swrast/s_texfetch_tmp.h
+++ b/src/mesa/swrast/s_texfetch_tmp.h
@@ -646,6 +646,54 @@ static void store_texel_argb8888_rev(struct swrast_texture_image *texImage,
 #endif
 
 
+/* MESA_FORMAT_RGBX8888 ******************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rgbx8888 texture, return 4 GLfloats */
+static void FETCH(f_rgbx8888)( const struct swrast_texture_image *texImage,
+                               GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( (s >> 24)        );
+   texel[GCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
+   texel[BCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
+   texel[ACOMP] = 1.0f;
+}
+
+#if DIM == 3
+static void store_texel_rgbx8888(struct swrast_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_8888(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], 0xff);
+}
+#endif
+
+
+/* MESA_FORMAT_RGBX888_REV ***************************************************/
+
+/* Fetch texel from 1D, 2D or 3D rgbx8888_rev texture, return 4 GLchans */
+static void FETCH(f_rgbx8888_rev)( const struct swrast_texture_image *texImage,
+                                   GLint i, GLint j, GLint k, GLfloat *texel )
+{
+   const GLuint s = *TEXEL_ADDR(GLuint, texImage, i, j, k, 1);
+   texel[RCOMP] = UBYTE_TO_FLOAT( (s      ) & 0xff );
+   texel[GCOMP] = UBYTE_TO_FLOAT( (s >>  8) & 0xff );
+   texel[BCOMP] = UBYTE_TO_FLOAT( (s >> 16) & 0xff );
+   texel[ACOMP] = 1.0f;
+}
+
+#if DIM == 3
+static void store_texel_rgbx8888_rev(struct swrast_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_8888_REV(rgba[RCOMP], rgba[GCOMP], rgba[BCOMP], 0xff);
+}
+#endif
+
+
 /* MESA_FORMAT_XRGB8888 ******************************************************/
 
 /* Fetch texel from 1D, 2D or 3D xrgb8888 texture, return 4 GLchans */