[Mesa-dev] [PATCH 1/2] mesa: add GL_EXT_texture_rg extension for OpenGL ES 2.x.

[Gwenole Beauchesne]

---
 include/GLES2/gl2ext.h        |   13 +++++++++++++
 src/mapi/glapi/gen/es_EXT.xml |    8 ++++++++
 src/mesa/main/APIspec.xml     |    1 +
 src/mesa/main/extensions.c    |    1 +
 4 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/include/GLES2/gl2ext.h b/include/GLES2/gl2ext.h
index 4eae246..25a9a34 100644
--- a/include/GLES2/gl2ext.h
+++ b/include/GLES2/gl2ext.h
@@ -292,6 +292,14 @@ typedef void* GLeglImageOES;
 #define GL_BGRA_EXT                                             0x80E1
 #endif
 
+/* GL_EXT_texture_rg */
+#ifndef GL_EXT_texture_rg
+#define GL_RED_EXT                                              0x1903
+#define GL_RG_EXT                                               0x8227
+#define GL_R8_EXT                                               0x8229
+#define GL_RG8_EXT                                              0x822B
+#endif
+
 /* GL_EXT_texture_type_2_10_10_10_REV */
 #ifndef GL_EXT_texture_type_2_10_10_10_REV
 #define GL_UNSIGNED_INT_2_10_10_10_REV_EXT                      0x8368
@@ -882,6 +890,11 @@ typedef void (GL_APIENTRYP PFNGLMULTIDRAWELEMENTSEXTPROC) (GLenum mode, const GL
 #define GL_EXT_texture_format_BGRA8888 1
 #endif
 
+/* GL_EXT_texture_rg */
+#ifndef GL_EXT_texture_rg
+#define GL_EXT_texture_rg 1
+#endif
+
 /* GL_EXT_texture_type_2_10_10_10_REV */
 #ifndef GL_EXT_texture_type_2_10_10_10_REV
 #define GL_EXT_texture_type_2_10_10_10_REV 1
diff --git a/src/mapi/glapi/gen/es_EXT.xml b/src/mapi/glapi/gen/es_EXT.xml
index c7e7d07..6b0cf4a 100644
--- a/src/mapi/glapi/gen/es_EXT.xml
+++ b/src/mapi/glapi/gen/es_EXT.xml
@@ -627,4 +627,12 @@
     <enum name="REQUIRED_TEXTURE_IMAGE_UNITS_OES"         value="0x8D68"/>
 </category>
 
+<!-- 103. GL_EXT_texture_rg -->
+<category name="GL_EXT_texture_rg" number="103">
+    <enum name="RED_EXT"                                  value="0x1903"/>
+    <enum name="RG_EXT"                                   value="0x8227"/>
+    <enum name="R8_EXT"                                   value="0x8229"/>
+    <enum name="RG8_EXT"                                  value="0x822B"/>
+</category>
+
 </OpenGLAPI>
diff --git a/src/mesa/main/APIspec.xml b/src/mesa/main/APIspec.xml
index f23857a..53f81d8 100644
--- a/src/mesa/main/APIspec.xml
+++ b/src/mesa/main/APIspec.xml
@@ -4140,6 +4140,7 @@
 	<category name="OES_packed_depth_stencil"/>
 	<category name="OES_standard_derivatives"/>
 	<category name="EXT_texture_format_BGRA8888"/>
+	<category name="EXT_texture_rg"/>
 	<category name="EXT_read_format_bgra"/>
 
 	<category name="EXT_texture_compression_dxt1"/>
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index 5f2c74a..57a5f5b 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -198,6 +198,7 @@ static const struct extension extension_table[] = {
    { "GL_EXT_texture_env_dot3",                    o(EXT_texture_env_dot3),                    GL,             2000 },
    { "GL_EXT_texture_filter_anisotropic",          o(EXT_texture_filter_anisotropic),          GL | ES1 | ES2, 1999 },
    { "GL_EXT_texture_format_BGRA8888",             o(dummy_true),                                   ES1 | ES2, 2005 },
+   { "GL_EXT_texture_rg",                          o(ARB_texture_rg),                                     ES2, 2011 },
    { "GL_EXT_read_format_bgra",                    o(dummy_true),                                   ES1 | ES2, 2009 },
    { "GL_EXT_texture_integer",                     o(EXT_texture_integer),                     GL,             2006 },
    { "GL_EXT_texture_lod_bias",                    o(dummy_true),                              GL | ES1,       1999 },
-- 
1.7.5.4