GPU: Improve the do_static_compilation_ check coverage

Since we use StaticShader now in many places, the check is often
bypassed.

Ensure that any compiled shader is either marked as static or as a
GPUPass.

Pull Request: https://projects.blender.org/blender/blender/pulls/144950

source/blender/gpu/intern/gpu_codegen.hh

@@ -46,6 +46,7 @@ struct GPUCodegenCreateInfo : ShaderCreateInfo {
 
   GPUCodegenCreateInfo(const char *name) : ShaderCreateInfo(name), info_name_(name)
   {
+    is_codegen_ = true;
     /* Base class is always initialized first, so we need to update the name_ pointer here. */
     name_ = info_name_.c_str();
   };

source/blender/gpu/intern/gpu_shader.cc

@@ -660,6 +660,7 @@ Shader *ShaderCompiler::compile(const shader::ShaderCreateInfo &info, bool is_ba
 
   using namespace blender::gpu::shader;
   const_cast<ShaderCreateInfo &>(info).finalize();
+  BLI_assert(info.do_static_compilation_ || info.is_codegen_);
 
   TimePoint start_time;
 

source/blender/gpu/intern/gpu_shader_create_info.hh

@@ -687,6 +687,8 @@ struct ShaderCreateInfo {
   StringRefNull name_;
   /** True if the shader is static and can be pre-compiled at compile time. */
   bool do_static_compilation_ = false;
+  /** True if the shader comes from GPUCodegen. */
+  bool is_codegen_ = false;
   /** If true, all additionally linked create info will be merged into this one. */
   bool finalized_ = false;
   /** If true, all resources will have an automatic location assigned. */