Workbench Simplification Refactor

This patch is (almost) a complete rewrite of workbench engine.
The features remain unchanged but the code quality is greatly improved.
Hair shading is brighter but also more correct.

This also introduce the concept of `DRWShaderLibrary` to make a simple
include system inside the GLSL files.

Differential Revision: https://developer.blender.org/D7060

1 files changed, 25 insertions, 1 deletions

diff --git a/source/blender/draw/intern/DRW_render.h b/source/blender/draw/intern/DRW_render.h
index c3e94fda4fc..5122b1ea1ac 100644
--- a/source/blender/draw/intern/DRW_render.h
+++ b/source/blender/draw/intern/DRW_render.h
@@ -81,6 +81,7 @@ typedef struct DRWPass DRWPass;
 typedef struct DRWShadingGroup DRWShadingGroup;
 typedef struct DRWUniform DRWUniform;
 typedef struct DRWView DRWView;
+typedef struct DRWShaderLibrary DRWShaderLibrary;
 
 /* TODO Put it somewhere else? */
 typedef struct BoundSphere {
@@ -148,6 +149,8 @@ struct GPUTexture *DRW_texture_pool_query_2d(int w,
                                              int h,
                                              eGPUTextureFormat format,
                                              DrawEngineType *engine_type);
+struct GPUTexture *DRW_texture_pool_query_fullscreen(eGPUTextureFormat format,
+                                                     DrawEngineType *engine_type);
 
 struct GPUTexture *DRW_texture_create_1d(int w,
                                          eGPUTextureFormat format,
@@ -246,6 +249,24 @@ void DRW_shader_free(struct GPUShader *shader);
     } \
   } while (0)
 
+DRWShaderLibrary *DRW_shader_library_create(void);
+
+/* Warning: Each library must be added after all its dependencies. */
+void DRW_shader_library_add_file(DRWShaderLibrary *lib, char *lib_code, const char *lib_name);
+#define DRW_SHADER_LIB_ADD(lib, lib_name) \
+  DRW_shader_library_add_file(lib, datatoc_##lib_name##_glsl, STRINGIFY(lib_name) ".glsl")
+
+char *DRW_shader_library_create_shader_string(DRWShaderLibrary *lib, char *shader_code);
+
+void DRW_shader_library_free(DRWShaderLibrary *lib);
+#define DRW_SHADER_LIB_FREE_SAFE(lib) \
+  do { \
+    if (lib != NULL) { \
+      DRW_shader_library_free(lib); \
+      lib = NULL; \
+    } \
+  } while (0)
+
 /* Batches */
 
 typedef enum {
@@ -403,6 +424,9 @@ void DRW_buffer_add_entry_array(DRWCallBuffer *buffer, const void *attr[], uint
     DRW_buffer_add_entry_array(buffer, array, (sizeof(array) / sizeof(*array))); \
   } while (0)
 
+/* Can only be called during iter phase. */
+uint32_t DRW_object_resource_id_get(Object *UNUSED(ob));
+
 void DRW_shgroup_state_enable(DRWShadingGroup *shgroup, DRWState state);
 void DRW_shgroup_state_disable(DRWShadingGroup *shgroup, DRWState state);
 
@@ -414,7 +438,7 @@ void DRW_shgroup_state_disable(DRWShadingGroup *shgroup, DRWState state);
 void DRW_shgroup_stencil_set(DRWShadingGroup *shgroup,
                              uint write_mask,
                              uint reference,
-                             uint comp_mask);
+                             uint compare_mask);
 /* TODO remove this function. Obsolete version. mask is actually reference value. */
 void DRW_shgroup_stencil_mask(DRWShadingGroup *shgroup, uint mask);