static unsigned
get_texture_format_swizzle(const struct st_context *st,
const struct st_texture_object *stObj,
unsigned glsl_version)
{
GLenum baseFormat = _mesa_texture_base_format(&stObj->base);
unsigned tex_swizzle;
if (baseFormat != GL_NONE) {
GLenum depth_mode = stObj->base.DepthMode;
/* In ES 3.0, DEPTH_TEXTURE_MODE is expected to be GL_RED for textures
* with depth component data specified with a sized internal format.
*/
if (_mesa_is_gles3(st->ctx) &&
util_format_is_depth_or_stencil(stObj->pt->format)) {
const struct gl_texture_image *firstImage =
_mesa_base_tex_image(&stObj->base);
if (firstImage->InternalFormat != GL_DEPTH_COMPONENT &&
firstImage->InternalFormat != GL_DEPTH_STENCIL &&
firstImage->InternalFormat != GL_STENCIL_INDEX)
depth_mode = GL_RED;
}
tex_swizzle = compute_texture_format_swizzle(baseFormat,
depth_mode,
stObj->pt->format,
glsl_version);
}
else {
tex_swizzle = SWIZZLE_XYZW;
}
/* Combine the texture format swizzle with user's swizzle */
return swizzle_swizzle(stObj->base._Swizzle, tex_swizzle);
}
static unsigned
get_texture_format_swizzle(const struct st_texture_object *stObj)
{
GLenum baseFormat = _mesa_texture_base_format(&stObj->base);
unsigned tex_swizzle;
if (baseFormat != GL_NONE) {
tex_swizzle = compute_texture_format_swizzle(baseFormat,
stObj->base.DepthMode,
stObj->pt->format);
}
else {
tex_swizzle = SWIZZLE_XYZW;
}
/* Combine the texture format swizzle with user's swizzle */
return swizzle_swizzle(stObj->base._Swizzle, tex_swizzle);
}
static unsigned
get_texture_format_swizzle(const struct st_texture_object *stObj)
{
const struct gl_texture_image *texImage =
stObj->base.Image[0][stObj->base.BaseLevel];
unsigned tex_swizzle;
if (texImage) {
tex_swizzle = compute_texture_format_swizzle(texImage->_BaseFormat,
stObj->base.DepthMode,
stObj->pt->format);
}
else {
tex_swizzle = SWIZZLE_XYZW;
}
/* Combine the texture format swizzle with user's swizzle */
return swizzle_swizzle(stObj->base._Swizzle, tex_swizzle);
}