GPUShaderCreateInfo for interface abstraction

This is a first part of the Shader Create Info system could be.

A shader create info provides a way to define shader structure, resources
and interfaces. This makes for a quick way to provide backend agnostic
binding informations while also making shader variations easy to declare.

- Clear source input (only one file). Cleans up the GPU api since we can create a
  shader from one descriptor
- Resources and interfaces are generated by the backend (much simpler than parsing).
- Bindings are explicit from position in the array.
- GPUShaderInterface becomes a trivial translation of enums and string copy.
- No external dependency to third party lib.
- Cleaner code, less fragmentation of resources in several libs.
- Easy to modify / extend at runtime.
- no parser involve, very easy to code.
- Does not hold any data, can be static and kept on disc.
- Could hold precompiled bytecode for static shaders.

This also includes a new global dependency system.
GLSL shaders can include other sources by using #pragma BLENDER_REQUIRE(...).

This patch already migrated several builtin shaders. Other shaders should be migrated
one at a time, and could be done inside master.

There is a new compile directive `WITH_GPU_SHADER_BUILDER` this is an optional
directive for linting shaders to increase turn around time.

What is remaining:
- pyGPU API {T94975}
- Migration of other shaders. This could be a community effort.

Reviewed By: jbakker

Maniphest Tasks: T94975

Differential Revision: https://developer.blender.org/D13360

1 files changed, 8 insertions, 0 deletions

diff --git a/source/blender/gpu/intern/gpu_init_exit.c b/source/blender/gpu/intern/gpu_init_exit.c
index 0eb2fe57c28..5815fb10b0c 100644
--- a/source/blender/gpu/intern/gpu_init_exit.c
+++ b/source/blender/gpu/intern/gpu_init_exit.c
@@ -32,6 +32,8 @@
 #include "intern/gpu_codegen.h"
 #include "intern/gpu_material_library.h"
 #include "intern/gpu_private.h"
+#include "intern/gpu_shader_create_info_private.hh"
+#include "intern/gpu_shader_dependency_private.h"
 
 /**
  * although the order of initialization and shutdown should not matter
@@ -49,6 +51,9 @@ void GPU_init(void)
 
   initialized = true;
 
+  gpu_shader_dependency_init();
+  gpu_shader_create_info_init();
+
   gpu_codegen_init();
   gpu_material_library_init();
 
@@ -70,6 +75,9 @@ void GPU_exit(void)
   gpu_material_library_exit();
   gpu_codegen_exit();
 
+  gpu_shader_dependency_exit();
+  gpu_shader_create_info_exit();
+
   initialized = false;
 }