Mesa (master): mesa: Add Get* support for ARB_vertex_attrib_binding

[Fredrik Höglund]

Module: Mesa
Branch: master
Commit: fb370f89dbebe4be989d994719449507d523f2c6
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=fb370f89dbebe4be989d994719449507d523f2c6

Author: Fredrik Höglund <fredrik at kde.org>
Date:   Thu Apr  4 22:15:13 2013 +0200

mesa: Add Get* support for ARB_vertex_attrib_binding

Reviewed-by: Eric Anholt <eric at anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

---

 src/mesa/main/get.c              |   24 ++++++++++++++++++++++++
 src/mesa/main/get_hash_params.py |    4 ++++
 src/mesa/main/varray.c           |   10 ++++++++++
 3 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index a0dd7cf..eee8550 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -1740,6 +1740,30 @@ find_value_indexed(const char *func, GLenum pname, GLuint index, union value *v)
          goto invalid_value;
       v->value_int64 = ctx->AtomicBufferBindings[index].Size;
       return TYPE_INT64;
+
+   case GL_VERTEX_BINDING_DIVISOR:
+      if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_instanced_arrays)
+          goto invalid_enum;
+      if (index >= ctx->Const.VertexProgram.MaxAttribs)
+          goto invalid_value;
+      v->value_int = ctx->Array.ArrayObj->VertexBinding[VERT_ATTRIB_GENERIC(index)].InstanceDivisor;
+      return TYPE_INT;
+
+   case GL_VERTEX_BINDING_OFFSET:
+      if (!_mesa_is_desktop_gl(ctx))
+          goto invalid_enum;
+      if (index >= ctx->Const.VertexProgram.MaxAttribs)
+          goto invalid_value;
+      v->value_int = ctx->Array.ArrayObj->VertexBinding[VERT_ATTRIB_GENERIC(index)].Offset;
+      return TYPE_INT;
+
+   case GL_VERTEX_BINDING_STRIDE:
+      if (!_mesa_is_desktop_gl(ctx))
+          goto invalid_enum;
+      if (index >= ctx->Const.VertexProgram.MaxAttribs)
+          goto invalid_value;
+      v->value_int = ctx->Array.ArrayObj->VertexBinding[VERT_ATTRIB_GENERIC(index)].Stride;
+      return TYPE_INT;
    }
 
  invalid_enum:
diff --git a/src/mesa/main/get_hash_params.py b/src/mesa/main/get_hash_params.py
index 5ecfbbc..c961fee 100644
--- a/src/mesa/main/get_hash_params.py
+++ b/src/mesa/main/get_hash_params.py
@@ -737,6 +737,10 @@ descriptor=[
   [ "MAX_GEOMETRY_ATOMIC_COUNTERS", "CONTEXT_INT(Const.GeometryProgram.MaxAtomicCounters), extra_ARB_shader_atomic_counters_and_geometry_shader" ],
   [ "MAX_COMBINED_ATOMIC_COUNTER_BUFFERS", "CONTEXT_INT(Const.MaxCombinedAtomicBuffers), extra_ARB_shader_atomic_counters" ],
   [ "MAX_COMBINED_ATOMIC_COUNTERS", "CONTEXT_INT(Const.MaxCombinedAtomicCounters), extra_ARB_shader_atomic_counters" ],
+
+# GL_ARB_vertex_attrib_binding
+  [ "MAX_VERTEX_ATTRIB_RELATIVE_OFFSET", "CONTEXT_ENUM(Const.MaxVertexAttribRelativeOffset), NO_EXTRA" ],
+  [ "MAX_VERTEX_ATTRIB_BINDINGS", "CONTEXT_ENUM(Const.MaxVertexAttribBindings), NO_EXTRA" ],
 ]},
 
 # Enums restricted to OpenGL Core profile
diff --git a/src/mesa/main/varray.c b/src/mesa/main/varray.c
index b0e0286..39e5ad3 100644
--- a/src/mesa/main/varray.c
+++ b/src/mesa/main/varray.c
@@ -747,6 +747,16 @@ get_vertex_array_attrib(struct gl_context *ctx, GLuint index, GLenum pname,
          return arrayObj->VertexBinding[array->VertexBinding].InstanceDivisor;
       }
       goto error;
+   case GL_VERTEX_ATTRIB_BINDING:
+      if (_mesa_is_desktop_gl(ctx)) {
+         return array->VertexBinding - VERT_ATTRIB_GENERIC0;
+      }
+      goto error;
+   case GL_VERTEX_ATTRIB_RELATIVE_OFFSET:
+      if (_mesa_is_desktop_gl(ctx)) {
+         return array->RelativeOffset;
+      }
+      goto error;
    default:
       ; /* fall-through */
    }