X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fglformats.c;h=5709b98306702afe0c64be3c0fd9c3386200b30a;hb=b8223244c38ad1c433b33b37bff3f19e7a9d2cfc;hp=41becd47d8bbf51ae31da8026448c1640787e5ba;hpb=d77c77936b3956e8925504ad980acbff74422e7c;p=mesa.git

diff --git a/src/mesa/main/glformats.c b/src/mesa/main/glformats.c
index 41becd47d8b..5709b983067 100644
--- a/src/mesa/main/glformats.c
+++ b/src/mesa/main/glformats.c
@@ -3512,6 +3512,36 @@ get_swizzle_from_gl_format(GLenum format, uint8_t *swizzle)
    }
 }
 
+bool
+_mesa_swap_bytes_in_type_enum(GLenum *type)
+{
+   switch (*type) {
+   case GL_UNSIGNED_INT_8_8_8_8:
+      *type = GL_UNSIGNED_INT_8_8_8_8_REV;
+      return true;
+   case GL_UNSIGNED_INT_8_8_8_8_REV:
+      *type = GL_UNSIGNED_INT_8_8_8_8;
+      return true;
+   case GL_UNSIGNED_SHORT_8_8_MESA:
+      *type = GL_UNSIGNED_SHORT_8_8_REV_MESA;
+      return true;
+   case GL_UNSIGNED_SHORT_8_8_REV_MESA:
+      *type = GL_UNSIGNED_SHORT_8_8_MESA;
+      return true;
+   case GL_BYTE:
+   case GL_UNSIGNED_BYTE:
+      /* format/types that are arrays of 8-bit values are unaffected by
+       * swapBytes.
+       */
+      return true;
+   default:
+      /* swapping bytes on 4444, 1555, or >8 bit per channel types etc. will
+       * never match a Mesa format.
+       */
+      return false;
+   }
+}
+
 /**
 * Take an OpenGL format (GL_RGB, GL_RGBA, etc), OpenGL data type (GL_INT,
 * GL_FOAT, etc) and return a matching mesa_array_format or a mesa_format
@@ -3536,6 +3566,9 @@ _mesa_format_from_format_and_type(GLenum format, GLenum type)
    bool normalized = false, is_float = false, is_signed = false;
    int num_channels = 0, type_size = 0;
 
+   if (format == GL_COLOR_INDEX)
+      return MESA_FORMAT_NONE;
+
    /* Extract array format type information from the OpenGL data type */
    switch (type) {
    case GL_UNSIGNED_BYTE: