[mutter] cogl: Remove unused pipeline lighting API

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 468dc99dc9937ee82e0b9352facb53585e4342a4
Author: Adam Jackson <ajax redhat com>
Date:   Tue Oct 29 14:28:42 2019 -0400

    cogl: Remove unused pipeline lighting API
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/904

 cogl/cogl/cogl-pipeline-state.c | 258 ----------------------------------------
 cogl/cogl/cogl-pipeline-state.h | 183 ----------------------------
 cogl/cogl/cogl.symbols          |  11 --
 3 files changed, 452 deletions(-)
---
diff --git a/cogl/cogl/cogl-pipeline-state.c b/cogl/cogl/cogl-pipeline-state.c
index 8c059e41b..9841d9c0c 100644
--- a/cogl/cogl/cogl-pipeline-state.c
+++ b/cogl/cogl/cogl-pipeline-state.c
@@ -478,264 +478,6 @@ _cogl_pipeline_set_blend_enabled (CoglPipeline *pipeline,
   pipeline->dirty_real_blend_enable = TRUE;
 }
 
-void
-cogl_pipeline_get_ambient (CoglPipeline *pipeline,
-                           CoglColor    *ambient)
-{
-  CoglPipeline *authority;
-
-  g_return_if_fail (cogl_is_pipeline (pipeline));
-
-  authority =
-    _cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
-
-  cogl_color_init_from_4fv (ambient,
-                            authority->big_state->lighting_state.ambient);
-}
-
-void
-cogl_pipeline_set_ambient (CoglPipeline *pipeline,
-                          const CoglColor *ambient)
-{
-  CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
-  CoglPipeline *authority;
-  CoglPipelineLightingState *lighting_state;
-
-  g_return_if_fail (cogl_is_pipeline (pipeline));
-
-  authority = _cogl_pipeline_get_authority (pipeline, state);
-
-  lighting_state = &authority->big_state->lighting_state;
-  if (cogl_color_equal (ambient, &lighting_state->ambient))
-    return;
-
-  /* - Flush journal primitives referencing the current state.
-   * - Make sure the pipeline has no dependants so it may be modified.
-   * - If the pipeline isn't currently an authority for the state being
-   *   changed, then initialize that state from the current authority.
-   */
-  _cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
-
-  lighting_state = &pipeline->big_state->lighting_state;
-  lighting_state->ambient[0] = cogl_color_get_red_float (ambient);
-  lighting_state->ambient[1] = cogl_color_get_green_float (ambient);
-  lighting_state->ambient[2] = cogl_color_get_blue_float (ambient);
-  lighting_state->ambient[3] = cogl_color_get_alpha_float (ambient);
-
-  _cogl_pipeline_update_authority (pipeline, authority, state,
-                                   _cogl_pipeline_lighting_state_equal);
-
-  pipeline->dirty_real_blend_enable = TRUE;
-}
-
-void
-cogl_pipeline_get_diffuse (CoglPipeline *pipeline,
-                           CoglColor    *diffuse)
-{
-  CoglPipeline *authority;
-
-  g_return_if_fail (cogl_is_pipeline (pipeline));
-
-  authority =
-    _cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
-
-  cogl_color_init_from_4fv (diffuse,
-                            authority->big_state->lighting_state.diffuse);
-}
-
-void
-cogl_pipeline_set_diffuse (CoglPipeline *pipeline,
-                          const CoglColor *diffuse)
-{
-  CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
-  CoglPipeline *authority;
-  CoglPipelineLightingState *lighting_state;
-
-  g_return_if_fail (cogl_is_pipeline (pipeline));
-
-  authority = _cogl_pipeline_get_authority (pipeline, state);
-
-  lighting_state = &authority->big_state->lighting_state;
-  if (cogl_color_equal (diffuse, &lighting_state->diffuse))
-    return;
-
-  /* - Flush journal primitives referencing the current state.
-   * - Make sure the pipeline has no dependants so it may be modified.
-   * - If the pipeline isn't currently an authority for the state being
-   *   changed, then initialize that state from the current authority.
-   */
-  _cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
-
-  lighting_state = &pipeline->big_state->lighting_state;
-  lighting_state->diffuse[0] = cogl_color_get_red_float (diffuse);
-  lighting_state->diffuse[1] = cogl_color_get_green_float (diffuse);
-  lighting_state->diffuse[2] = cogl_color_get_blue_float (diffuse);
-  lighting_state->diffuse[3] = cogl_color_get_alpha_float (diffuse);
-
-
-  _cogl_pipeline_update_authority (pipeline, authority, state,
-                                   _cogl_pipeline_lighting_state_equal);
-
-  pipeline->dirty_real_blend_enable = TRUE;
-}
-
-void
-cogl_pipeline_set_ambient_and_diffuse (CoglPipeline *pipeline,
-                                      const CoglColor *color)
-{
-  cogl_pipeline_set_ambient (pipeline, color);
-  cogl_pipeline_set_diffuse (pipeline, color);
-}
-
-void
-cogl_pipeline_get_specular (CoglPipeline *pipeline,
-                            CoglColor    *specular)
-{
-  CoglPipeline *authority;
-
-  g_return_if_fail (cogl_is_pipeline (pipeline));
-
-  authority =
-    _cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
-
-  cogl_color_init_from_4fv (specular,
-                            authority->big_state->lighting_state.specular);
-}
-
-void
-cogl_pipeline_set_specular (CoglPipeline *pipeline, const CoglColor *specular)
-{
-  CoglPipeline *authority;
-  CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
-  CoglPipelineLightingState *lighting_state;
-
-  g_return_if_fail (cogl_is_pipeline (pipeline));
-
-  authority = _cogl_pipeline_get_authority (pipeline, state);
-
-  lighting_state = &authority->big_state->lighting_state;
-  if (cogl_color_equal (specular, &lighting_state->specular))
-    return;
-
-  /* - Flush journal primitives referencing the current state.
-   * - Make sure the pipeline has no dependants so it may be modified.
-   * - If the pipeline isn't currently an authority for the state being
-   *   changed, then initialize that state from the current authority.
-   */
-  _cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
-
-  lighting_state = &pipeline->big_state->lighting_state;
-  lighting_state->specular[0] = cogl_color_get_red_float (specular);
-  lighting_state->specular[1] = cogl_color_get_green_float (specular);
-  lighting_state->specular[2] = cogl_color_get_blue_float (specular);
-  lighting_state->specular[3] = cogl_color_get_alpha_float (specular);
-
-  _cogl_pipeline_update_authority (pipeline, authority, state,
-                                   _cogl_pipeline_lighting_state_equal);
-
-  pipeline->dirty_real_blend_enable = TRUE;
-}
-
-float
-cogl_pipeline_get_shininess (CoglPipeline *pipeline)
-{
-  CoglPipeline *authority;
-
-  g_return_val_if_fail (cogl_is_pipeline (pipeline), 0);
-
-  authority =
-    _cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
-
-  return authority->big_state->lighting_state.shininess;
-}
-
-void
-cogl_pipeline_set_shininess (CoglPipeline *pipeline,
-                            float shininess)
-{
-  CoglPipeline *authority;
-  CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
-  CoglPipelineLightingState *lighting_state;
-
-  g_return_if_fail (cogl_is_pipeline (pipeline));
-
-  if (shininess < 0.0)
-    {
-      g_warning ("Out of range shininess %f supplied for pipeline\n",
-                 shininess);
-      return;
-    }
-
-  authority = _cogl_pipeline_get_authority (pipeline, state);
-
-  lighting_state = &authority->big_state->lighting_state;
-
-  if (lighting_state->shininess == shininess)
-    return;
-
-  /* - Flush journal primitives referencing the current state.
-   * - Make sure the pipeline has no dependants so it may be modified.
-   * - If the pipeline isn't currently an authority for the state being
-   *   changed, then initialize that state from the current authority.
-   */
-  _cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
-
-  lighting_state = &pipeline->big_state->lighting_state;
-  lighting_state->shininess = shininess;
-
-  _cogl_pipeline_update_authority (pipeline, authority, state,
-                                   _cogl_pipeline_lighting_state_equal);
-}
-
-void
-cogl_pipeline_get_emission (CoglPipeline *pipeline,
-                            CoglColor    *emission)
-{
-  CoglPipeline *authority;
-
-  g_return_if_fail (cogl_is_pipeline (pipeline));
-
-  authority =
-    _cogl_pipeline_get_authority (pipeline, COGL_PIPELINE_STATE_LIGHTING);
-
-  cogl_color_init_from_4fv (emission,
-                            authority->big_state->lighting_state.emission);
-}
-
-void
-cogl_pipeline_set_emission (CoglPipeline *pipeline, const CoglColor *emission)
-{
-  CoglPipeline *authority;
-  CoglPipelineState state = COGL_PIPELINE_STATE_LIGHTING;
-  CoglPipelineLightingState *lighting_state;
-
-  g_return_if_fail (cogl_is_pipeline (pipeline));
-
-  authority = _cogl_pipeline_get_authority (pipeline, state);
-
-  lighting_state = &authority->big_state->lighting_state;
-  if (cogl_color_equal (emission, &lighting_state->emission))
-    return;
-
-  /* - Flush journal primitives referencing the current state.
-   * - Make sure the pipeline has no dependants so it may be modified.
-   * - If the pipeline isn't currently an authority for the state being
-   *   changed, then initialize that state from the current authority.
-   */
-  _cogl_pipeline_pre_change_notify (pipeline, state, NULL, FALSE);
-
-  lighting_state = &pipeline->big_state->lighting_state;
-  lighting_state->emission[0] = cogl_color_get_red_float (emission);
-  lighting_state->emission[1] = cogl_color_get_green_float (emission);
-  lighting_state->emission[2] = cogl_color_get_blue_float (emission);
-  lighting_state->emission[3] = cogl_color_get_alpha_float (emission);
-
-  _cogl_pipeline_update_authority (pipeline, authority, state,
-                                   _cogl_pipeline_lighting_state_equal);
-
-  pipeline->dirty_real_blend_enable = TRUE;
-}
-
 static void
 _cogl_pipeline_set_alpha_test_function (CoglPipeline *pipeline,
                                         CoglPipelineAlphaFunc alpha_func)
diff --git a/cogl/cogl/cogl-pipeline-state.h b/cogl/cogl/cogl-pipeline-state.h
index 319320cc0..ff5e1ebe2 100644
--- a/cogl/cogl/cogl-pipeline-state.h
+++ b/cogl/cogl/cogl-pipeline-state.h
@@ -120,189 +120,6 @@ void
 cogl_pipeline_get_color (CoglPipeline *pipeline,
                          CoglColor    *color);
 
-/**
- * cogl_pipeline_set_ambient:
- * @pipeline: A #CoglPipeline object
- * @ambient: The components of the desired ambient color
- *
- * Sets the pipeline's ambient color, in the standard OpenGL lighting
- * model. The ambient color affects the overall color of the object.
- *
- * Since the diffuse color will be intense when the light hits the surface
- * directly, the ambient will be most apparent where the light hits at a
- * slant.
- *
- * The default value is (0.2, 0.2, 0.2, 1.0)
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_set_ambient (CoglPipeline    *pipeline,
-                          const CoglColor *ambient);
-
-/**
- * cogl_pipeline_get_ambient:
- * @pipeline: A #CoglPipeline object
- * @ambient: The location to store the ambient color
- *
- * Retrieves the current ambient color for @pipeline
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_get_ambient (CoglPipeline *pipeline,
-                           CoglColor    *ambient);
-
-/**
- * cogl_pipeline_set_diffuse:
- * @pipeline: A #CoglPipeline object
- * @diffuse: The components of the desired diffuse color
- *
- * Sets the pipeline's diffuse color, in the standard OpenGL lighting
- * model. The diffuse color is most intense where the light hits the
- * surface directly - perpendicular to the surface.
- *
- * The default value is (0.8, 0.8, 0.8, 1.0)
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_set_diffuse (CoglPipeline    *pipeline,
-                          const CoglColor *diffuse);
-
-/**
- * cogl_pipeline_get_diffuse:
- * @pipeline: A #CoglPipeline object
- * @diffuse: The location to store the diffuse color
- *
- * Retrieves the current diffuse color for @pipeline
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_get_diffuse (CoglPipeline *pipeline,
-                           CoglColor    *diffuse);
-
-/**
- * cogl_pipeline_set_ambient_and_diffuse:
- * @pipeline: A #CoglPipeline object
- * @color: The components of the desired ambient and diffuse colors
- *
- * Conveniently sets the diffuse and ambient color of @pipeline at the same
- * time. See cogl_pipeline_set_ambient() and cogl_pipeline_set_diffuse().
- *
- * The default ambient color is (0.2, 0.2, 0.2, 1.0)
- *
- * The default diffuse color is (0.8, 0.8, 0.8, 1.0)
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_set_ambient_and_diffuse (CoglPipeline    *pipeline,
-                                      const CoglColor *color);
-
-/**
- * cogl_pipeline_set_specular:
- * @pipeline: A #CoglPipeline object
- * @specular: The components of the desired specular color
- *
- * Sets the pipeline's specular color, in the standard OpenGL lighting
- * model. The intensity of the specular color depends on the viewport
- * position, and is brightest along the lines of reflection.
- *
- * The default value is (0.0, 0.0, 0.0, 1.0)
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_set_specular (CoglPipeline    *pipeline,
-                           const CoglColor *specular);
-
-/**
- * cogl_pipeline_get_specular:
- * @pipeline: A #CoglPipeline object
- * @specular: The location to store the specular color
- *
- * Retrieves the pipelines current specular color.
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_get_specular (CoglPipeline *pipeline,
-                            CoglColor    *specular);
-
-/**
- * cogl_pipeline_set_shininess:
- * @pipeline: A #CoglPipeline object
- * @shininess: The desired shininess; must be >= 0.0
- *
- * Sets the shininess of the pipeline, in the standard OpenGL lighting
- * model, which determines the size of the specular highlights. A
- * higher @shininess will produce smaller highlights which makes the
- * object appear more shiny.
- *
- * The default value is 0.0
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_set_shininess (CoglPipeline *pipeline,
-                            float         shininess);
-
-/**
- * cogl_pipeline_get_shininess:
- * @pipeline: A #CoglPipeline object
- *
- * Retrieves the pipelines current emission color.
- *
- * Return value: The pipelines current shininess value
- *
- * Since: 2.0
- * Stability: Unstable
- */
-float
-cogl_pipeline_get_shininess (CoglPipeline *pipeline);
-
-/**
- * cogl_pipeline_set_emission:
- * @pipeline: A #CoglPipeline object
- * @emission: The components of the desired emissive color
- *
- * Sets the pipeline's emissive color, in the standard OpenGL lighting
- * model. It will look like the surface is a light source emitting this
- * color.
- *
- * The default value is (0.0, 0.0, 0.0, 1.0)
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_set_emission (CoglPipeline    *pipeline,
-                           const CoglColor *emission);
-
-/**
- * cogl_pipeline_get_emission:
- * @pipeline: A #CoglPipeline object
- * @emission: The location to store the emission color
- *
- * Retrieves the pipelines current emission color.
- *
- * Since: 2.0
- * Stability: Unstable
- */
-void
-cogl_pipeline_get_emission (CoglPipeline *pipeline,
-                            CoglColor    *emission);
-
 /**
  * CoglPipelineAlphaFunc:
  * @COGL_PIPELINE_ALPHA_FUNC_NEVER: Never let the fragment through.
diff --git a/cogl/cogl/cogl.symbols b/cogl/cogl/cogl.symbols
index c61e186b7..86d1dfbf9 100644
--- a/cogl/cogl/cogl.symbols
+++ b/cogl/cogl/cogl.symbols
@@ -556,12 +556,9 @@ cogl_pipeline_copy
 cogl_pipeline_foreach_layer
 cogl_pipeline_get_alpha_test_function
 cogl_pipeline_get_alpha_test_reference
-cogl_pipeline_get_ambient
 cogl_pipeline_get_color
 cogl_pipeline_get_cull_face_mode
 cogl_pipeline_get_depth_state
-cogl_pipeline_get_diffuse
-cogl_pipeline_get_emission
 cogl_pipeline_get_front_face_winding
 #ifdef COGL_HAS_GTYPE_SUPPORT
 cogl_pipeline_get_gtype
@@ -576,14 +573,10 @@ cogl_pipeline_get_layer_wrap_mode_t
 cogl_pipeline_get_n_layers
 cogl_pipeline_get_per_vertex_point_size
 cogl_pipeline_get_point_size
-cogl_pipeline_get_shininess
-cogl_pipeline_get_specular
 cogl_pipeline_get_uniform_location
 cogl_pipeline_get_user_program
 cogl_pipeline_new
 cogl_pipeline_set_alpha_test_function
-cogl_pipeline_set_ambient
-cogl_pipeline_set_ambient_and_diffuse
 cogl_pipeline_set_blend
 cogl_pipeline_set_blend_constant
 cogl_pipeline_set_color
@@ -591,8 +584,6 @@ cogl_pipeline_set_color4f
 cogl_pipeline_set_color4ub
 cogl_pipeline_set_cull_face_mode
 cogl_pipeline_set_depth_state
-cogl_pipeline_set_diffuse
-cogl_pipeline_set_emission
 cogl_pipeline_set_front_face_winding
 cogl_pipeline_set_layer_combine
 cogl_pipeline_set_layer_combine_constant
@@ -608,8 +599,6 @@ cogl_pipeline_set_layer_wrap_mode_t
 cogl_pipeline_set_per_vertex_point_size
 cogl_pipeline_set_point_size
 cogl_pipeline_remove_layer
-cogl_pipeline_set_shininess
-cogl_pipeline_set_specular
 cogl_pipeline_set_uniform_float
 cogl_pipeline_set_uniform_int
 cogl_pipeline_set_uniform_matrix