GPUState: Fix Point Size issues

The point size was not updated in the right branch and setting the point
size via GPU_point_size was effectively disabling its use.

2 files changed, 7 insertions, 4 deletions

diff --git a/source/blender/gpu/intern/gpu_state.cc b/source/blender/gpu/intern/gpu_state.cc
index 529c8795327..07eacc06bcf 100644
--- a/source/blender/gpu/intern/gpu_state.cc
+++ b/source/blender/gpu/intern/gpu_state.cc
@@ -173,12 +173,15 @@ void GPU_line_width(float width)
 
 void GPU_point_size(float size)
 {
-  SET_MUTABLE_STATE(point_size, size * PIXELSIZE);
+  GPUStateManager *stack = Context::get()->state_manager;
+  auto &state = stack->mutable_state;
+  /* Set point size sign negative to disable. */
+  state.point_size = size * signf(state.point_size);
 }
 
 /* Programmable point size
  * - shaders set their own point size when enabled
- * - use glPointSize when disabled */
+ * - use GPU_point_size when disabled */
 /* TODO remove and use program point size everywhere */
 void GPU_program_point_size(bool enable)
 {
diff --git a/source/blender/gpu/opengl/gl_state.cc b/source/blender/gpu/opengl/gl_state.cc
index 03762edac93..487cd4369cc 100644
--- a/source/blender/gpu/opengl/gl_state.cc
+++ b/source/blender/gpu/opengl/gl_state.cc
@@ -141,13 +141,13 @@ void GLStateManager::set_mutable_state(const GPUStateMutable &state)
   GPUStateMutable changed = state ^ current_mutable_;
 
   /* TODO remove, should be uniform. */
-  if (changed.point_size != 0) {
+  if (changed.point_size != 0.0f) {
     if (state.point_size > 0.0f) {
       glEnable(GL_PROGRAM_POINT_SIZE);
-      glPointSize(state.point_size);
     }
     else {
       glDisable(GL_PROGRAM_POINT_SIZE);
+      glPointSize(fabsf(state.point_size));
     }
   }