Basic crashing text rendering

2022-04-15 11:19:30 +02:00
parent 3fec36295a
commit eb23264c40
41 changed files with 895 additions and 273 deletions
@@ -0,0 +1,85 @@
+#pragma once
+#include "RenderPass.h"
+#include "UI/RenderHierarchy.h"
+#include "Graphics/GraphicsResources.h"
+#include "Asset/FontAsset.h"
+
+namespace Seele
+{
+DECLARE_NAME_REF(Gfx, Texture2D)
+DECLARE_NAME_REF(Gfx, RenderTargetAttachment)
+DECLARE_NAME_REF(Gfx, StructuredBuffer)
+struct TextRender
+{
+    std::string text;
+    PFontAsset font;
+    Vector4 textColor;
+    Vector2 position;
+    float scale;
+};
+struct TextPassData
+{
+    Array<TextRender> texts;
+};
+
+class TextPass : public RenderPass<TextPassData>
+{
+public:
+    TextPass(Gfx::PGraphics graphics, Gfx::PViewport viewport, Gfx::PRenderTargetAttachment renderTarget);
+    virtual ~TextPass();
+    virtual MainJob beginFrame() override;
+    virtual MainJob render() override;
+    virtual MainJob endFrame() override;
+    virtual void publishOutputs() override;
+    virtual void createRenderPass() override;
+private:
+    struct GlyphData
+    {
+        Vector2 bearing;
+        Vector2 size;
+    };
+    struct GlyphInstanceData
+    {
+        uint32 glyphIndex;
+        Vector2 position;
+    };
+    struct FontData
+    {
+        Gfx::PStructuredBuffer structuredBuffer;
+        Array<Gfx::PTexture> textures;
+        Map<uint32, uint32> characterToGlyphIndex;
+        // Logically this should be part of GlyphData,
+        // but because GlyphData mirrors shader data and we need
+        // the advance on the CPU, we need this in a separate structure
+        Map<uint32, uint32> characterAdvance;
+    };
+    FontData& getFontData(PFontAsset font);
+    Map<PFontAsset, FontData> fontData;
+
+    struct TextResources
+    {
+        Gfx::PDescriptorSet descriptorSet;
+        Gfx::PDescriptorSet textureArraySet;
+        Gfx::PVertexBuffer vertexBuffer;
+        float scale;
+    };
+    Array<TextResources> textResources;
+
+    Gfx::PRenderTargetAttachment renderTarget;
+    Gfx::PRenderTargetAttachment depthAttachment;
+    Gfx::PTexture2D depthBuffer;
+
+    Gfx::PDescriptorLayout descriptorLayout;
+    Gfx::PDescriptorLayout textureArrayLayout;
+
+    Gfx::PUniformBuffer projectionBuffer;
+    Gfx::PSamplerState glyphSampler;
+
+    Gfx::PVertexDeclaration declaration;
+    Gfx::PVertexShader vertexShader;
+    Gfx::PFragmentShader fragmentShader;
+    Gfx::PPipelineLayout pipelineLayout;
+    Gfx::PGraphicsPipeline pipeline;
+};
+DEFINE_REF(TextPass);
+} // namespace Seele