main: Added entry point for glTransformFeedbackBufferBase

v2: Review from Laura Ekstrand
- give more helpful error messages
- factor the lookup code for the xfb and objBuf
- replace some already-existing tabs with spaces
- add comments to explain the cases where xfb == 0 or buffer == 0
- fix the condition for binding the transform buffer or not

v3: Review from Laura Ekstrand
- rename _mesa_lookup_bufferobj_err to
  _mesa_lookup_transform_feedback_bufferobj_err and make it static to avoid a
  future conflict
- make _mesa_lookup_transform_feedback_object_err static

v4: Review from Laura Ekstrand
- add the pdf page number when quoting the spec
- rename some of the symbols to follow the public/private conventions

v5: Review from Laura Ekstrand
- properly rename some of the symbols to follow the public/private conventions
- fix some alignments
- add quotes around a spec citation
- add back a newline I accidentally deleted
- add spaces around the ternary operator usages

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

1 files changed, 6 insertions, 3 deletions

diff --git a/src/mesa/main/bufferobj.c b/src/mesa/main/bufferobj.c
index 96587708423..e73793638c9 100644
--- a/src/mesa/main/bufferobj.c
+++ b/src/mesa/main/bufferobj.c
@@ -3885,8 +3885,9 @@ _mesa_BindBufferRange(GLenum target, GLuint index,
 
    switch (target) {
    case GL_TRANSFORM_FEEDBACK_BUFFER:
-      _mesa_bind_buffer_range_transform_feedback(ctx, index, bufObj,
-						 offset, size);
+      _mesa_bind_buffer_range_transform_feedback(ctx,
+                                                 ctx->TransformFeedback.CurrentObject,
+                                                 index, bufObj, offset, size);
       return;
    case GL_UNIFORM_BUFFER:
       bind_buffer_range_uniform_buffer(ctx, index, bufObj, offset, size);
@@ -3950,7 +3951,9 @@ _mesa_BindBufferBase(GLenum target, GLuint index, GLuint buffer)
 
    switch (target) {
    case GL_TRANSFORM_FEEDBACK_BUFFER:
-      _mesa_bind_buffer_base_transform_feedback(ctx, index, bufObj);
+      _mesa_bind_buffer_base_transform_feedback(ctx,
+                                                ctx->TransformFeedback.CurrentObject,
+                                                index, bufObj, false);
       return;
    case GL_UNIFORM_BUFFER:
       bind_buffer_base_uniform_buffer(ctx, index, bufObj);