LibGL+LibSoftGPU: Add GPU side shader infrastructure

This adds a shader class to LibSoftGPU and makes use of it when linking
GLSL program in LibGL. Also adds actual rendering code to the shader
tests.

2 files changed, 32 insertions, 0 deletions

diff --git a/Userland/Libraries/LibGPU/Device.h b/Userland/Libraries/LibGPU/Device.h
index 7b08f315c5..d2a7a112d9 100644
--- a/Userland/Libraries/LibGPU/Device.h
+++ b/Userland/Libraries/LibGPU/Device.h
@@ -12,6 +12,7 @@
 #include <AK/Vector.h>
 #include <LibGPU/DeviceInfo.h>
 #include <LibGPU/Enums.h>
+#include <LibGPU/IR.h>
 #include <LibGPU/Image.h>
 #include <LibGPU/ImageDataLayout.h>
 #include <LibGPU/Light.h>
@@ -20,6 +21,7 @@
 #include <LibGPU/RasterPosition.h>
 #include <LibGPU/RasterizerOptions.h>
 #include <LibGPU/SamplerConfig.h>
+#include <LibGPU/Shader.h>
 #include <LibGPU/StencilConfiguration.h>
 #include <LibGPU/TextureUnitConfiguration.h>
 #include <LibGPU/Vertex.h>
@@ -56,6 +58,7 @@ public:
     virtual LightModelParameters light_model() const = 0;
 
     virtual NonnullRefPtr<Image> create_image(PixelFormat const&, u32 width, u32 height, u32 depth, u32 max_levels) = 0;
+    virtual ErrorOr<NonnullRefPtr<Shader>> create_shader(IR::Shader const&) = 0;
 
     virtual void set_sampler_config(unsigned, SamplerConfig const&) = 0;
     virtual void set_light_state(unsigned, Light const&) = 0;
diff --git a/Userland/Libraries/LibGPU/Shader.h b/Userland/Libraries/LibGPU/Shader.h
new file mode 100644
index 0000000000..c96a8d0dea
--- /dev/null
+++ b/Userland/Libraries/LibGPU/Shader.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2022, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/RefCounted.h>
+
+namespace GPU {
+
+class Shader : public RefCounted<Shader> {
+public:
+    Shader(void const* ownership_token)
+        : m_ownership_token { ownership_token }
+    {
+    }
+
+    virtual ~Shader() = default;
+
+    void const* ownership_token() const { return m_ownership_token; }
+    bool has_same_ownership_token(Shader const& other) const { return other.ownership_token() == ownership_token(); }
+
+private:
+    void const* const m_ownership_token { nullptr };
+};
+
+}