* MESA_FORMAT_Z_FLOAT32, otherwise for MESA_FORMAT_Z24_UNORM_S8_UINT objects it will be
* MESA_FORMAT_Z24_UNORM_X8_UINT.
*
- * For ETC1/ETC2 textures, this is one of the uncompressed mesa texture
- * formats if the hardware lacks support for ETC1/ETC2. See @ref etc_format.
- *
* @see RENDER_SURFACE_STATE.SurfaceFormat
* @see 3DSTATE_DEPTH_BUFFER.SurfaceFormat
*/
mesa_format format;
- /**
- * This variable stores the value of ETC compressed texture format
- *
- * @see RENDER_SURFACE_STATE.SurfaceFormat
- */
- mesa_format etc_format;
-
GLuint first_level;
GLuint last_level;
*
* This miptree may be used for:
* - Stencil texturing (pre-BDW) as required by GL_ARB_stencil_texturing.
+ * - To store the decompressed ETC/EAC data in case we emulate the ETC
+ * compression on Gen 7 or earlier GPUs.
*/
struct intel_mipmap_tree *shadow_mt;
bool shadow_needs_update;
intel_miptree_get_memcpy_type(mesa_format tiledFormat, GLenum format, GLenum type,
uint32_t *cpp);
+static inline bool
+intel_miptree_needs_fake_etc(struct brw_context *brw,
+ struct intel_mipmap_tree *mt)
+{
+ const struct gen_device_info *devinfo = &brw->screen->devinfo;
+ bool is_etc = _mesa_is_format_etc2(mt->format) ||
+ (mt->format == MESA_FORMAT_ETC1_RGB8);
+
+ return devinfo->gen < 8 && !devinfo->is_baytrail && is_etc;
+}
+
+static inline bool
+intel_miptree_has_etc_shadow(struct brw_context *brw,
+ struct intel_mipmap_tree *mt)
+{
+ return intel_miptree_needs_fake_etc(brw, mt) && mt->shadow_mt;
+}
+
+void
+intel_miptree_update_etc_shadow_levels(struct brw_context *brw,
+ struct intel_mipmap_tree *mt);
+
#ifdef __cplusplus
}
#endif