[libdrm-examples] : Fix rendering artefacts.

- Support and match internal pixel format.

- 'Fix' scale and offset 'quirks'.

- Various improvements.

Author: msieben

package/libdrm-examples/Config.in

@@ -2,10 +2,15 @@ config BR2_PACKAGE_LIBDRM_EXAMPLES
     bool "libdrm-examples"
     depends on BR2_PACKAGE_MESA3D_GBM
     depends on BR2_PACKAGE_LIBDRM
-    depends on BR2_PACKAGE_LIBEGL
-    depends on BR2_PACKAGE_LIBGLES
+    depends on BR2_PACKAGE_HAS_LIBEGL
+    depends on BR2_PACKAGE_HAS_LIBGLES
     help
         Various (libdrm) test examples
 
-comment "libdrm-examples requires libdrm, Mesa's GBM , EGL adn OpenGLES V2"
-   depends on !BR2_PACKAGE_MESA3D_GBM || !BR2_PACKAGE_LIBDRM || !BR2_PACKAGE_LIBEGL || !BR2_PACKAGE_LIBGLES
+config BR2_PACKAGE_LIBDRM_EXAMPLES_QUIRKS
+    bool "quirks"
+    depends on BR2_PACKAGE_LIBDRM_EXAMPLES
+    default n
+
+comment "libdrm-examples requires libdrm, Mesa's GBM , EGL and OpenGLES V2"
+   depends on !BR2_PACKAGE_MESA3D_GBM || !BR2_PACKAGE_LIBDRM || !BR2_PACKAGE_HAS_LIBEGL || !BR2_PACKAGE_HAS_LIBGLES

package/libdrm-examples/libdrm-examples.mk

@@ -40,6 +40,10 @@ else
     LIBDRM_EXAMPLES_CPPFLAGS += -DNDEBUG
 endif
 
+ifeq ($(BR2_PACKAGE_LIBDRM_EXAMPLES_QUIRKS)x,yx)
+    LIBDRM_EXAMPLES_CPPFLAGS += -D_QUIRKS
+endif
+
 define LIBDRM_EXAMPLES_CONFIGURE_CMDS
 @echo "Nothing to be done"
 endef