Method DrawSprites

TombEngine/Renderer/RendererSprites.cpp:260–426

	}

	void Renderer::DrawSprites(RenderView& view, RendererPass rendererPass)
	{
		if (view.SpritesToDraw.empty())
			return;

		// Draw instanced sprites.
		bool wasGpuSet = false;
		for (const auto& spriteBucket : _spriteBuckets)
		{
			if (spriteBucket.SpritesToDraw.empty() || !spriteBucket.IsBillboard)
				continue;

			if (!SetupBlendModeAndAlphaTest(spriteBucket.BlendMode, rendererPass, 0))
				continue;

			if (!wasGpuSet)
			{
				_context->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLESTRIP);

				BindRenderTargetAsTexture(TextureRegister::GBufferDepthMap, &_depthRenderTarget, SamplerStateRegister::PointWrap);

				SetDepthState(DepthState::Read);
				SetCullMode(CullMode::None);

				_shaders.Bind(Shader::InstancedSprites);

				// Set up vertex buffer and parameters.
				unsigned int stride = sizeof(Vertex);
				unsigned int offset = 0;
				_context->IASetVertexBuffers(0, 1, _quadVertexBuffer.Buffer.GetAddressOf(), &stride, &offset);

				wasGpuSet = true;
			}

			// Define sprite preparation logic.
			auto prepareSprites = [&](int start, int end)
			{
				for (int i = start; i < end; i++)
				{
					const auto& spriteToDraw = spriteBucket.SpritesToDraw[i];

					_stInstancedSpriteBuffer.Sprites[i].World = GetWorldMatrixForSprite(spriteToDraw, view);
					_stInstancedSpriteBuffer.Sprites[i].Color = spriteToDraw.color;
					_stInstancedSpriteBuffer.Sprites[i].IsBillboard = 1.0f;
					_stInstancedSpriteBuffer.Sprites[i].PerVertexColor = 0;
					_stInstancedSpriteBuffer.Sprites[i].IsSoftParticle = spriteToDraw.SoftParticle ? 1.0f : 0.0f;
					_stInstancedSpriteBuffer.Sprites[i].RenderType = (int)spriteToDraw.renderType;

					PackSpriteTextureCoordinates(i, spriteToDraw.Sprite);
				}
			};
			g_Parallel.AddTasks((int)spriteBucket.SpritesToDraw.size(), prepareSprites).wait();

			BindTexture(TextureRegister::ColorMap, spriteBucket.Sprite->Texture, SamplerStateRegister::LinearClamp);
			UpdateConstantBuffer(_stInstancedSpriteBuffer, _cbInstancedSpriteBuffer);;

			// Draw sprites with instancing.
			DrawInstancedTriangles(4, (int)spriteBucket.SpritesToDraw.size(), 0);