main: Added entry point for glGetTransformFeedbacki_v

v2: Review from Laura Ekstrand
- use the transform feedback object lookup wrapper

v3:
- use the new name of _mesa_lookup_transform_feedback_object_err

Reviewed-by: Laura Ekstrand <[email protected]>
Signed-off-by: Martin Peres <[email protected]>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/mesa/main/transformfeedback.c b/src/mesa/main/transformfeedback.c
index 0900d411b91..4f9dadac9b4 100644
--- a/src/mesa/main/transformfeedback.c
+++ b/src/mesa/main/transformfeedback.c
@@ -1228,3 +1228,32 @@ _mesa_GetTransformFeedbackiv(GLuint xfb, GLenum pname, GLint *param)
                    "glGetTransformFeedbackiv(pname=%i)", pname);
     }
 }
+
+extern void GLAPIENTRY
+_mesa_GetTransformFeedbacki_v(GLuint xfb, GLenum pname, GLuint index,
+                              GLint *param)
+{
+   struct gl_transform_feedback_object *obj;
+   GET_CURRENT_CONTEXT(ctx);
+
+   obj = lookup_transform_feedback_object_err(ctx, xfb,
+                                              "glGetTransformFeedbacki_v");
+   if(!obj) {
+      return;
+   }
+
+   if (index >= ctx->Const.MaxTransformFeedbackBuffers) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glGetTransformFeedbacki_v(index=%i)", index);
+      return;
+   }
+
+   switch(pname) {
+   case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
+      *param = obj->BufferNames[index];
+      break;
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glGetTransformFeedbacki_v(pname=%i)", pname);
+   }
+}