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, 36 insertions, 0 deletions

diff --git a/source/blender/gpu/shaders/infos/gpu_shader_2D_checker_info.hh b/source/blender/gpu/shaders/infos/gpu_shader_2D_checker_info.hh
new file mode 100644
index 00000000000..a69420bede4
--- /dev/null
+++ b/source/blender/gpu/shaders/infos/gpu_shader_2D_checker_info.hh
@@ -0,0 +1,36 @@
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2022 Blender Foundation.
+ * All rights reserved.
+ */
+
+/** \file
+ * \ingroup gpu
+ */
+
+
+#include "gpu_shader_create_info.hh"
+
+GPU_SHADER_CREATE_INFO(gpu_shader_2D_checker)
+    .vertex_in(0, Type::VEC2, "pos")
+    .fragment_out(0, Type::VEC4, "fragColor")
+    .push_constant(0, Type::MAT4, "ModelViewProjectionMatrix")
+    .push_constant(16, Type::VEC4, "color1")
+    .push_constant(20, Type::VEC4, "color2")
+    .push_constant(24, Type::INT, "size")
+    .vertex_source("gpu_shader_2D_vert.glsl")
+    .fragment_source("gpu_shader_checker_frag.glsl")
+    .do_static_compilation(true);