[Mesa-dev] [PATCH] Expose support for OES/EXT_draw_elements_base_vertex to OpenGL ES

[Ryan Houdek]

---
 src/mapi/glapi/gen/es_EXT.xml | 88 +++++++++++++++++++++++++++++++++++++++++++
 src/mesa/main/extensions.c    |  2 +
 src/mesa/vbo/vbo_exec_array.c | 19 ++++++++--
 3 files changed, 105 insertions(+), 4 deletions(-)

diff --git a/src/mapi/glapi/gen/es_EXT.xml b/src/mapi/glapi/gen/es_EXT.xml
index cfca5a9..1bc82d3 100644
--- a/src/mapi/glapi/gen/es_EXT.xml
+++ b/src/mapi/glapi/gen/es_EXT.xml
@@ -817,4 +817,92 @@
     </function>
 </category>
 
+<category name="GL_EXT_draw_elements_base_vertex" number="204">
+
+	<function name="DrawElementsBaseVertexEXT" alias="DrawElementsBaseVertex"
+            exec="dynamic">
+        <param name="mode" type="GLenum"/>
+        <param name="count" type="GLsizei"/>
+        <param name="type" type="GLenum"/>
+        <param name="indices" type="const GLvoid *"/>
+        <param name="basevertex" type="GLint"/>
+    </function>
+
+    <function name="DrawRangeElementsBaseVertexEXT" alias="DrawRangeElementsBaseVertex"
+            exec="dynamic">
+        <param name="mode" type="GLenum"/>
+        <param name="start" type="GLuint"/>
+        <param name="end" type="GLuint"/>
+        <param name="count" type="GLsizei"/>
+        <param name="type" type="GLenum"/>
+        <param name="indices" type="const GLvoid *"/>
+        <param name="basevertex" type="GLint"/>
+    </function>
+
+    <function name="MultiDrawElementsBaseVertexEXT" alias="MultiDrawElementsBaseVertex"
+            exec="dynamic">
+        <param name="mode" type="GLenum"/>
+        <param name="count" type="const GLsizei *"/>
+        <param name="type" type="GLenum"/>
+        <param name="indices" type="const GLvoid * const *"/>
+        <param name="primcount" type="GLsizei"/>
+        <param name="basevertex" type="const GLint *"/>
+    </function>
+
+    <function name="DrawElementsInstancedBaseVertexEXT" alias="DrawElementsInstancedBaseVertex"
+            exec="dynamic">
+        <param name="mode" type="GLenum"/>
+        <param name="count" type="GLsizei"/>
+        <param name="type" type="GLenum"/>
+        <param name="indices" type="const GLvoid *"/>
+        <param name="primcount" type="GLsizei"/>
+        <param name="basevertex" type="GLint"/>
+    </function>
+
+</category>
+
+<category name="GL_OES_draw_elements_base_vertex" number="219">
+
+	<function name="DrawElementsBaseVertexOES" alias="DrawElementsBaseVertex"
+            exec="dynamic">
+        <param name="mode" type="GLenum"/>
+        <param name="count" type="GLsizei"/>
+        <param name="type" type="GLenum"/>
+        <param name="indices" type="const GLvoid *"/>
+        <param name="basevertex" type="GLint"/>
+    </function>
+
+    <function name="DrawRangeElementsBaseVertexOES" alias="DrawRangeElementsBaseVertex"
+            exec="dynamic">
+        <param name="mode" type="GLenum"/>
+        <param name="start" type="GLuint"/>
+        <param name="end" type="GLuint"/>
+        <param name="count" type="GLsizei"/>
+        <param name="type" type="GLenum"/>
+        <param name="indices" type="const GLvoid *"/>
+        <param name="basevertex" type="GLint"/>
+    </function>
+
+    <function name="MultiDrawElementsBaseVertexOES" alias="MultiDrawElementsBaseVertex"
+            exec="dynamic">
+        <param name="mode" type="GLenum"/>
+        <param name="count" type="const GLsizei *"/>
+        <param name="type" type="GLenum"/>
+        <param name="indices" type="const GLvoid * const *"/>
+        <param name="primcount" type="GLsizei"/>
+        <param name="basevertex" type="const GLint *"/>
+    </function>
+
+    <function name="DrawElementsInstancedBaseVertexOES" alias="DrawElementsInstancedBaseVertex"
+            exec="dynamic">
+        <param name="mode" type="GLenum"/>
+        <param name="count" type="GLsizei"/>
+        <param name="type" type="GLenum"/>
+        <param name="indices" type="const GLvoid *"/>
+        <param name="primcount" type="GLsizei"/>
+        <param name="basevertex" type="GLint"/>
+    </function>
+
+</category>
+
 </OpenGLAPI>
diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
index b2c88c3..e968104 100644
--- a/src/mesa/main/extensions.c
+++ b/src/mesa/main/extensions.c
@@ -229,6 +229,7 @@ static const struct extension extension_table[] = {
    { "GL_EXT_depth_bounds_test",                   o(EXT_depth_bounds_test),                   GL,             2002 },
    { "GL_EXT_draw_buffers",                        o(dummy_true),                                         ES2, 2012 },
    { "GL_EXT_draw_buffers2",                       o(EXT_draw_buffers2),                       GL,             2006 },
+   { "GL_EXT_draw_elements_base_vertex",           o(ARB_draw_elements_base_vertex),                      ES2, 2014 },
    { "GL_EXT_draw_instanced",                      o(ARB_draw_instanced),                      GL,             2006 },
    { "GL_EXT_draw_range_elements",                 o(dummy_true),                              GLL,            1997 },
    { "GL_EXT_fog_coord",                           o(dummy_true),                              GLL,            1999 },
@@ -305,6 +306,7 @@ static const struct extension extension_table[] = {
    { "GL_OES_depth32",                             o(dummy_false),                     DISABLE,                2005 },
    { "GL_OES_depth_texture",                       o(ARB_depth_texture),                                  ES2, 2006 },
    { "GL_OES_depth_texture_cube_map",              o(OES_depth_texture_cube_map),                         ES2, 2012 },
+   { "GL_OES_draw_elements_base_vertex",           o(ARB_draw_elements_base_vertex),                      ES2, 2014 },
    { "GL_OES_draw_texture",                        o(OES_draw_texture),                             ES1,       2004 },
    { "GL_OES_EGL_sync",                            o(dummy_true),                                   ES1 | ES2, 2010 },
    /*  FIXME: Mesa expects GL_OES_EGL_image to be available in OpenGL contexts. */
diff --git a/src/mesa/vbo/vbo_exec_array.c b/src/mesa/vbo/vbo_exec_array.c
index 34d2c1d..620d350 100644
--- a/src/mesa/vbo/vbo_exec_array.c
+++ b/src/mesa/vbo/vbo_exec_array.c
@@ -1807,13 +1807,24 @@ vbo_initialize_exec_dispatch(const struct gl_context *ctx,
       SET_EvalMesh2(exec, vbo_exec_EvalMesh2);
    }
 
+   if (_mesa_is_desktop_gl(ctx) ||
+	 (_mesa_is_gles(ctx) && ctx->Extensions.ARB_draw_elements_base_vertex)) {
+	SET_DrawElementsBaseVertex(exec, vbo_exec_DrawElementsBaseVertex);
+
+	if (_mesa_is_desktop_gl(ctx) || _mesa_is_gles3(ctx)) {
+		SET_DrawRangeElementsBaseVertex(exec, vbo_exec_DrawRangeElementsBaseVertex);
+		SET_DrawElementsInstancedBaseVertex(exec, vbo_exec_DrawElementsInstancedBaseVertex);
+	}
+
+	if (_mesa_is_desktop_gl(ctx) ||
+          (_mesa_is_gles(ctx) && ctx->Extensions.ARB_draw_indirect)) {
+		SET_MultiDrawElementsBaseVertex(exec, vbo_exec_MultiDrawElementsBaseVertex);
+	}
+   }
+
    if (_mesa_is_desktop_gl(ctx)) {
-      SET_DrawElementsBaseVertex(exec, vbo_exec_DrawElementsBaseVertex);
-      SET_DrawRangeElementsBaseVertex(exec, vbo_exec_DrawRangeElementsBaseVertex);
-      SET_MultiDrawElementsBaseVertex(exec, vbo_exec_MultiDrawElementsBaseVertex);
       SET_DrawArraysInstancedBaseInstance(exec, vbo_exec_DrawArraysInstancedBaseInstance);
       SET_DrawElementsInstancedBaseInstance(exec, vbo_exec_DrawElementsInstancedBaseInstance);
-      SET_DrawElementsInstancedBaseVertex(exec, vbo_exec_DrawElementsInstancedBaseVertex);
       SET_DrawElementsInstancedBaseVertexBaseInstance(exec, vbo_exec_DrawElementsInstancedBaseVertexBaseInstance);
    }
 
-- 
1.9.1