StillHammer
4a30b1f149
- Refactor ShaderManager to use RHI abstraction (no bgfx:: exposed) - Implement Option E: inject ShaderHandle via pass constructors - SpritePass/DebugPass now receive shader in constructor - RenderPass::execute() takes IRHIDevice& for dynamic buffer updates - SpritePass::execute() updates instance buffer from FramePacket - Integrate ShaderManager lifecycle in BgfxRendererModule - Add test_22_bgfx_sprites.cpp (visual test with SDL2) - Add test_22_bgfx_sprites_headless.cpp (headless data structure test) - Update PLAN_BGFX_RENDERER.md with Phase 4 completion and Phase 6.5 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
#include "SpritePass.h"
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#include "../RHI/RHIDevice.h"
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#include "../Frame/FramePacket.h"
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namespace grove {
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SpritePass::SpritePass(rhi::ShaderHandle shader)
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: m_shader(shader)
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{
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}
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void SpritePass::setup(rhi::IRHIDevice& device) {
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// Create quad vertex buffer (unit quad, instanced)
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// Positions: 4 vertices for a quad
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float quadVertices[] = {
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// pos.x, pos.y, uv.x, uv.y
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0.0f, 0.0f, 0.0f, 0.0f, // bottom-left
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1.0f, 0.0f, 1.0f, 0.0f, // bottom-right
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1.0f, 1.0f, 1.0f, 1.0f, // top-right
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0.0f, 1.0f, 0.0f, 1.0f, // top-left
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};
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rhi::BufferDesc vbDesc;
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vbDesc.type = rhi::BufferDesc::Vertex;
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vbDesc.size = sizeof(quadVertices);
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vbDesc.data = quadVertices;
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vbDesc.dynamic = false;
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m_quadVB = device.createBuffer(vbDesc);
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// Create index buffer
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uint16_t quadIndices[] = {
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0, 1, 2, // first triangle
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0, 2, 3 // second triangle
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};
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rhi::BufferDesc ibDesc;
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ibDesc.type = rhi::BufferDesc::Index;
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ibDesc.size = sizeof(quadIndices);
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ibDesc.data = quadIndices;
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ibDesc.dynamic = false;
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m_quadIB = device.createBuffer(ibDesc);
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// Create dynamic instance buffer
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rhi::BufferDesc instDesc;
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instDesc.type = rhi::BufferDesc::Instance;
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instDesc.size = MAX_SPRITES_PER_BATCH * sizeof(SpriteInstance);
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instDesc.data = nullptr;
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instDesc.dynamic = true;
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m_instanceBuffer = device.createBuffer(instDesc);
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// Create texture sampler uniform
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m_textureSampler = device.createUniform("s_texture", 1);
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}
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void SpritePass::shutdown(rhi::IRHIDevice& device) {
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device.destroy(m_quadVB);
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device.destroy(m_quadIB);
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device.destroy(m_instanceBuffer);
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device.destroy(m_textureSampler);
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// Note: m_shader is owned by ShaderManager, not destroyed here
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}
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void SpritePass::execute(const FramePacket& frame, rhi::IRHIDevice& device, rhi::RHICommandBuffer& cmd) {
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if (frame.spriteCount == 0) {
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return;
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}
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// Set render state for sprites (alpha blending, no depth)
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rhi::RenderState state;
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state.blend = rhi::BlendMode::Alpha;
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state.cull = rhi::CullMode::None;
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state.depthTest = false;
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state.depthWrite = false;
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cmd.setState(state);
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// Process sprites in batches
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size_t remaining = frame.spriteCount;
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size_t offset = 0;
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while (remaining > 0) {
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size_t batchSize = (remaining > MAX_SPRITES_PER_BATCH)
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? MAX_SPRITES_PER_BATCH : remaining;
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// Update instance buffer with sprite data
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// The SpriteInstance struct matches what we send to GPU
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const SpriteInstance* batchData = frame.sprites + offset;
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device.updateBuffer(m_instanceBuffer, batchData,
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static_cast<uint32_t>(batchSize * sizeof(SpriteInstance)));
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cmd.setVertexBuffer(m_quadVB);
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cmd.setIndexBuffer(m_quadIB);
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cmd.setInstanceBuffer(m_instanceBuffer, 0, static_cast<uint32_t>(batchSize));
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// Submit draw call
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cmd.drawInstanced(6, static_cast<uint32_t>(batchSize)); // 6 indices per quad
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cmd.submit(0, m_shader, 0);
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offset += batchSize;
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remaining -= batchSize;
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}
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}
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} // namespace grove
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