237 lines
8.6 KiB
C++
237 lines
8.6 KiB
C++
#include "TextPass.h"
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#include "RenderGraph.h"
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#include "Graphics/Graphics.h"
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#include "Graphics/RenderTarget.h"
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using namespace Seele;
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TextPass::TextPass(Gfx::PGraphics graphics, PScene scene)
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: RenderPass(graphics, scene)
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{
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}
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TextPass::~TextPass()
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{
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}
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void TextPass::beginFrame(const Component::Camera&)
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{
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for(TextRender& render : texts)
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{
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FontData& fd = getFontData(render.font);
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TextResources& res = textResources[render.font].add();
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Array<GlyphInstanceData> instanceData;
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float x = render.position.x;
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float y = render.position.y;
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for(uint32 c : render.text)
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{
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const GlyphData& glyph = fd.glyphDataSet[fd.characterToGlyphIndex[c]];
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Vector2 bearing = glyph.bearing;
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Vector2 size = glyph.size;
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float xpos = x + bearing.x * render.scale;
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float ypos = y - (size.y - bearing.y) * render.scale;
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float w = size.x * render.scale;
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float h = size.y * render.scale;
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instanceData.add(GlyphInstanceData{
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.position = Vector2(xpos, ypos),
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.widthHeight = Vector2(w, h),
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.glyphIndex = fd.characterToGlyphIndex[c],
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});
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x += (glyph.advance >> 6) * render.scale;
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}
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VertexBufferCreateInfo vbInfo = {
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.resourceData = {
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.size = static_cast<uint32>(instanceData.size() * sizeof(GlyphInstanceData)),
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.data = reinterpret_cast<uint8*>(instanceData.data()),
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},
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.vertexSize = sizeof(GlyphInstanceData),
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.numVertices = static_cast<uint32>(instanceData.size()),
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};
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res.vertexBuffer = graphics->createVertexBuffer(vbInfo);
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res.textureArraySet = fd.textureArraySet;
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res.textData = {
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.textColor = render.textColor,
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.scale = render.scale,
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};
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}
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auto proj = viewport->getProjectionMatrix();
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BulkResourceData projectionUpdate = {
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.size = sizeof(Matrix4),
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.data = (uint8*)&proj,
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};
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projectionBuffer->updateContents(projectionUpdate);
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generalSet->updateBuffer(1, projectionBuffer);
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generalSet->writeChanges();
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//co_return;
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}
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void TextPass::render()
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{
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graphics->beginRenderPass(renderPass);
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Array<Gfx::PRenderCommand> commands;
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for(const auto& [fontAsset, res] : textResources)
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{
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Gfx::PRenderCommand command = graphics->createRenderCommand("TextPassCommand");
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command->setViewport(viewport);
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command->bindPipeline(pipeline);
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for(const auto& resource : res)
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{
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command->bindDescriptor({generalSet, resource.textureArraySet});
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command->bindVertexBuffer({resource.vertexBuffer});
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command->pushConstants(pipelineLayout, Gfx::SE_SHADER_STAGE_VERTEX_BIT | Gfx::SE_SHADER_STAGE_FRAGMENT_BIT, 0, sizeof(TextData), &resource.textData);
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command->draw(4, static_cast<uint32>(resource.vertexBuffer->getNumVertices()), 0, 0);
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}
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commands.add(command);
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}
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graphics->executeCommands(commands);
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graphics->endRenderPass();
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textResources.clear();
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//co_return;
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}
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void TextPass::endFrame()
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{
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//co_return;
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}
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void TextPass::publishOutputs()
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{
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}
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void TextPass::createRenderPass()
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{
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renderTarget = resources->requestRenderTarget("UIPASS_COLOR");
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depthAttachment = resources->requestRenderTarget("UIPASS_DEPTH");
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ShaderCreateInfo createInfo;
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createInfo.mainModule = "TextPass";
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createInfo.defines["INDEX_VIEW_PARAMS"] = "0";
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createInfo.name = "TextVertex";
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createInfo.entryPoint = "vertexMain";
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vertexShader = graphics->createVertexShader(createInfo);
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createInfo.name = "TextFragment";
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createInfo.entryPoint = "fragmentMain";
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fragmentShader = graphics->createFragmentShader(createInfo);
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Array<Gfx::VertexElement> elements;
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elements.add({
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.binding = 0,
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.offset = offsetof(GlyphInstanceData, position),
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.vertexFormat = Gfx::SE_FORMAT_R32G32_SFLOAT,
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.attributeIndex = 0,
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.stride = sizeof(GlyphInstanceData),
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.bInstanced = 1
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});
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elements.add({
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.binding = 0,
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.offset = offsetof(GlyphInstanceData, widthHeight),
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.vertexFormat = Gfx::SE_FORMAT_R32G32_SFLOAT,
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.attributeIndex = 1,
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.stride = sizeof(GlyphInstanceData),
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.bInstanced = 1
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});
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elements.add({
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.binding = 0,
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.offset = offsetof(GlyphInstanceData, glyphIndex),
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.vertexFormat = Gfx::SE_FORMAT_R32_UINT,
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.attributeIndex = 2,
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.stride = sizeof(GlyphInstanceData),
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.bInstanced = 1
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});
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declaration = graphics->createVertexDeclaration(elements);
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generalLayout = graphics->createDescriptorLayout("TextGeneral");
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generalLayout->addDescriptorBinding(0, Gfx::SE_DESCRIPTOR_TYPE_UNIFORM_BUFFER);
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generalLayout->addDescriptorBinding(1, Gfx::SE_DESCRIPTOR_TYPE_SAMPLER);
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generalLayout->create();
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textureArrayLayout = graphics->createDescriptorLayout("TextTextureArray");
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textureArrayLayout->addDescriptorBinding(0, Gfx::SE_DESCRIPTOR_TYPE_SAMPLED_IMAGE, 256, Gfx::SE_DESCRIPTOR_BINDING_VARIABLE_DESCRIPTOR_COUNT_BIT);
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textureArrayLayout->create();
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projectionBuffer = graphics->createUniformBuffer({
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.resourceData = {
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.size = sizeof(Matrix4),
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.data = nullptr,
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},
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.bDynamic = true,
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});
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glyphSampler = graphics->createSamplerState({
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.magFilter = Gfx::SE_FILTER_LINEAR,
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.minFilter = Gfx::SE_FILTER_LINEAR,
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.addressModeU = Gfx::SE_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
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.addressModeV = Gfx::SE_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE,
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});
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generalSet = generalLayout->allocateDescriptorSet();
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generalSet->updateBuffer(0, projectionBuffer);
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generalSet->updateSampler(1, glyphSampler);
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generalSet->writeChanges();
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pipelineLayout = graphics->createPipelineLayout();
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pipelineLayout->addDescriptorLayout(0, generalLayout);
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pipelineLayout->addDescriptorLayout(1, textureArrayLayout);
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pipelineLayout->addPushConstants({
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.stageFlags = Gfx::SE_SHADER_STAGE_VERTEX_BIT | Gfx::SE_SHADER_STAGE_FRAGMENT_BIT,
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.offset = 0,
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.size = sizeof(TextData)});
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pipelineLayout->create();
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Gfx::PRenderTargetLayout layout = new Gfx::RenderTargetLayout(renderTarget, depthAttachment);
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renderPass = graphics->createRenderPass(layout, viewport);
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Gfx::LegacyPipelineCreateInfo pipelineInfo;
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pipelineInfo.vertexDeclaration = declaration;
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pipelineInfo.vertexShader = vertexShader;
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pipelineInfo.fragmentShader = fragmentShader;
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pipelineInfo.renderPass = renderPass;
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pipelineInfo.pipelineLayout = pipelineLayout;
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pipelineInfo.rasterizationState.cullMode = Gfx::SE_CULL_MODE_NONE;
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pipelineInfo.colorBlend.attachmentCount = 1;
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pipelineInfo.colorBlend.blendAttachments[0].blendEnable = true;
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pipelineInfo.colorBlend.blendAttachments[0].colorWriteMask = Gfx::SE_COLOR_COMPONENT_R_BIT | Gfx::SE_COLOR_COMPONENT_G_BIT | Gfx::SE_COLOR_COMPONENT_B_BIT | Gfx::SE_COLOR_COMPONENT_A_BIT;
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pipelineInfo.colorBlend.blendAttachments[0].srcColorBlendFactor = Gfx::SE_BLEND_FACTOR_SRC_ALPHA;
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pipelineInfo.colorBlend.blendAttachments[0].dstColorBlendFactor = Gfx::SE_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
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pipelineInfo.colorBlend.blendAttachments[0].alphaBlendOp = Gfx::SE_BLEND_OP_ADD;
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pipelineInfo.colorBlend.blendAttachments[0].srcAlphaBlendFactor = Gfx::SE_BLEND_FACTOR_ONE_MINUS_SRC_ALPHA;
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pipelineInfo.colorBlend.blendAttachments[0].dstAlphaBlendFactor = Gfx::SE_BLEND_FACTOR_ZERO;
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pipelineInfo.colorBlend.blendAttachments[0].alphaBlendOp = Gfx::SE_BLEND_OP_ADD;
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pipelineInfo.topology = Gfx::SE_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP;
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pipeline = graphics->createGraphicsPipeline(pipelineInfo);
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}
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TextPass::FontData& TextPass::getFontData(PFontAsset font)
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{
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if(fontData.exists(font))
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{
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return fontData[font];
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}
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const auto& fontGlyphs = font->getGlyphData();
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FontData& fd = fontData[font];
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Array<GlyphData> glyphData;
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Array<Gfx::PTexture> textures;
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glyphData.reserve(fontGlyphs.size());
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for(const auto& [key, value] : fontGlyphs)
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{
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fd.characterToGlyphIndex[key] = static_cast<uint32>(glyphData.size());
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GlyphData& gd = glyphData.add();
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gd.bearing = value.bearing;
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gd.size = value.size;
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gd.advance = value.advance;
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textures.add(value.texture);
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}
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fd.glyphDataSet = glyphData;
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fd.textureArraySet = textureArrayLayout->allocateDescriptorSet();
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fd.textureArraySet->updateTextureArray(0, textures);
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fd.textureArraySet->writeChanges();
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return fontData[font];
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}
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