render/gles2: add support for some 24 and 16-bit formats
On little-endian, we can enable pixel formats which don't use
gl_type = GL_UNSIGNED_BYTE. See [1].
[1]:
@@ -32,6 +32,45 @@ static const struct wlr_gles2_pixel_format formats[] = {
.gl_type = GL_UNSIGNED_BYTE,
.has_alpha = true,
},
+ {
+ .drm_format = DRM_FORMAT_BGR888,
+ .gl_format = GL_RGB,
+ .gl_type = GL_UNSIGNED_BYTE,
+ .has_alpha = false,
+ },
+#if WLR_LITTLE_ENDIAN
+ {
+ .drm_format = DRM_FORMAT_RGBX4444,
+ .gl_format = GL_RGBA,
+ .gl_type = GL_UNSIGNED_SHORT_4_4_4_4,
+ .has_alpha = false,
+ },
+ {
+ .drm_format = DRM_FORMAT_RGBA4444,
+ .gl_format = GL_RGBA,
+ .gl_type = GL_UNSIGNED_SHORT_4_4_4_4,
+ .has_alpha = true,
+ },
+ {
+ .drm_format = DRM_FORMAT_RGBX5551,
+ .gl_format = GL_RGBA,
+ .gl_type = GL_UNSIGNED_SHORT_5_5_5_1,
+ .has_alpha = false,
+ },
+ {
+ .drm_format = DRM_FORMAT_RGBA5551,
+ .gl_format = GL_RGBA,
+ .gl_type = GL_UNSIGNED_SHORT_5_5_5_1,
+ .has_alpha = true,
+ },
+ {
+ .drm_format = DRM_FORMAT_RGB565,
+ .gl_format = GL_RGB,
+ .gl_type = GL_UNSIGNED_SHORT_5_6_5,
+ .has_alpha = false,
+ },
+ // TODO: EXT_texture_type_2_10_10_10_REV support
+#endif
};
// TODO: more pixel formats
