StillHammer
9618a647a2
- Fix texture state management in BgfxDevice: defer setTexture until submit() - Add transient instance buffer support for multi-batch rendering - Add ParticlePass with fire, smoke and sparkle particle systems - Load multiple textures from config (texture1..texture10) - Visual test now demonstrates multi-texture sprites and multi-particle effects 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
91 lines
3.6 KiB
C++
91 lines
3.6 KiB
C++
#pragma once
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#include "RHITypes.h"
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#include <vector>
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#include <cstring>
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namespace grove::rhi {
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// ============================================================================
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// Command Types - POD for serialization
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// ============================================================================
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enum class CommandType : uint8_t {
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SetState,
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SetTexture,
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SetUniform,
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SetVertexBuffer,
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SetIndexBuffer,
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SetInstanceBuffer,
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SetTransientInstanceBuffer, // For frame-local multi-batch rendering
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SetScissor,
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Draw,
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DrawIndexed,
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DrawInstanced,
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Submit
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};
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struct Command {
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CommandType type;
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union {
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struct { RenderState state; } setState;
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struct { uint8_t slot; TextureHandle texture; UniformHandle sampler; } setTexture;
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struct { UniformHandle uniform; float data[16]; uint8_t numVec4s; } setUniform;
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struct { BufferHandle buffer; uint32_t offset; } setVertexBuffer;
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struct { BufferHandle buffer; uint32_t offset; bool is32Bit; } setIndexBuffer;
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struct { BufferHandle buffer; uint32_t start; uint32_t count; } setInstanceBuffer;
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struct { uint16_t poolIndex; uint32_t start; uint32_t count; } setTransientInstanceBuffer;
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struct { uint16_t x, y, w, h; } setScissor;
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struct { uint32_t vertexCount; uint32_t startVertex; } draw;
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struct { uint32_t indexCount; uint32_t startIndex; } drawIndexed;
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struct { uint32_t indexCount; uint32_t instanceCount; } drawInstanced;
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struct { ViewId view; ShaderHandle shader; uint32_t depth; } submit;
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};
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// Default constructor required because union contains non-trivial types
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Command() : type(CommandType::SetState) { std::memset(&setState, 0, sizeof(setState)); }
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~Command() = default;
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Command(const Command&) = default;
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Command& operator=(const Command&) = default;
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};
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// ============================================================================
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// Command Buffer - One per thread, write-only during recording
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// ============================================================================
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class RHICommandBuffer {
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public:
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RHICommandBuffer() = default;
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// Non-copyable, movable
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RHICommandBuffer(const RHICommandBuffer&) = delete;
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RHICommandBuffer& operator=(const RHICommandBuffer&) = delete;
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RHICommandBuffer(RHICommandBuffer&&) = default;
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RHICommandBuffer& operator=(RHICommandBuffer&&) = default;
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// Command recording
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void setState(const RenderState& state);
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void setTexture(uint8_t slot, TextureHandle tex, UniformHandle sampler);
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void setUniform(UniformHandle uniform, const float* data, uint8_t numVec4s);
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void setVertexBuffer(BufferHandle buffer, uint32_t offset = 0);
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void setIndexBuffer(BufferHandle buffer, uint32_t offset = 0, bool is32Bit = false);
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void setInstanceBuffer(BufferHandle buffer, uint32_t start, uint32_t count);
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void setTransientInstanceBuffer(const TransientInstanceBuffer& buffer, uint32_t start, uint32_t count);
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void setScissor(uint16_t x, uint16_t y, uint16_t w, uint16_t h);
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void draw(uint32_t vertexCount, uint32_t startVertex = 0);
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void drawIndexed(uint32_t indexCount, uint32_t startIndex = 0);
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void drawInstanced(uint32_t indexCount, uint32_t instanceCount);
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void submit(ViewId view, ShaderHandle shader, uint32_t depth = 0);
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// Read-only access for execution
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const std::vector<Command>& getCommands() const { return m_commands; }
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void clear() { m_commands.clear(); }
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size_t size() const { return m_commands.size(); }
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private:
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std::vector<Command> m_commands;
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};
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} // namespace grove::rhi
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