91 lines
3.7 KiB
C++
91 lines
3.7 KiB
C++
// IAEngine: 2D Game Engine by IA
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// Copyright (C) 2025 IAS (ias@iasoft.dev)
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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#include <IAEngine/Rendering/Pipeline/UnlitMesh.hpp>
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#include <SDL3/SDL_gpu.h>
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#include <EmbeddedShaders.hpp>
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namespace ia::iae
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{
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EXTERN SDL_GPUDevice *g_gpuDevice;
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EXTERN SDL_Window *g_windowHandle;
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Pipeline_UnlitMesh::~Pipeline_UnlitMesh()
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{
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if(m_handle)
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SDL_ReleaseGPUGraphicsPipeline(g_gpuDevice, (SDL_GPUGraphicsPipeline*)m_handle);
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}
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RefPtr<Pipeline_UnlitMesh> Pipeline_UnlitMesh::Create()
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{
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const auto res = MakeRefPtr<Pipeline_UnlitMesh>();
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const auto vertexShader = LoadShaderFromMemory(ShaderStage::VERTEX, SHADER_SOURCE_UNLITMESH_VERT, sizeof(SHADER_SOURCE_UNLITMESH_VERT), 0, 3, 0, 0);
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const auto pixelShader = LoadShaderFromMemory(ShaderStage::PIXEL, SHADER_SOURCE_UNLITMESH_FRAG, sizeof(SHADER_SOURCE_UNLITMESH_FRAG), 1, 1, 0, 0);
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SDL_GPUColorTargetDescription colorTargets[] = {
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{.format = SDL_GetGPUSwapchainTextureFormat(g_gpuDevice, g_windowHandle)}};
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SDL_GPUVertexBufferDescription vertexBuffers[] = {{
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.slot = 0,
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.pitch = sizeof(Vertex_Mesh),
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.input_rate = SDL_GPU_VERTEXINPUTRATE_VERTEX,
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.instance_step_rate = 0,
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}};
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SDL_GPUVertexAttribute vertexAttributes[] = {
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{.location = 0, .buffer_slot = 0, .format = SDL_GPU_VERTEXELEMENTFORMAT_FLOAT3, .offset = 0},
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{.location = 1,
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.buffer_slot = 0,
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.format = SDL_GPU_VERTEXELEMENTFORMAT_FLOAT2,
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.offset = sizeof(glm::vec3)}};
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SDL_GPUGraphicsPipelineCreateInfo createInfo = {
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.vertex_shader = (SDL_GPUShader *) vertexShader,
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.fragment_shader = (SDL_GPUShader *) pixelShader,
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.vertex_input_state =
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SDL_GPUVertexInputState{.vertex_buffer_descriptions = vertexBuffers,
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.num_vertex_buffers = sizeof(vertexBuffers) / sizeof(vertexBuffers[0]),
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.vertex_attributes = vertexAttributes,
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.num_vertex_attributes =
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sizeof(vertexAttributes) / sizeof(vertexAttributes[0])},
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.primitive_type = SDL_GPU_PRIMITIVETYPE_TRIANGLELIST,
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.target_info =
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{
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.color_target_descriptions = colorTargets,
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.num_color_targets = sizeof(colorTargets) / sizeof(colorTargets[0]),
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},
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};
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SDL_GPUGraphicsPipeline* handle{};
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if(!(handle = SDL_CreateGPUGraphicsPipeline(g_gpuDevice, &createInfo)))
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{
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IAE_LOG_ERROR("Failed to create a SDL graphics pipeline: ", SDL_GetError());
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return nullptr;
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}
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UnloadShader(pixelShader);
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UnloadShader(vertexShader);
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res->m_handle = (Handle)handle;
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return res;
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}
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VOID Pipeline_UnlitMesh::Bind(IN Handle renderPassHandle)
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{
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SDL_BindGPUGraphicsPipeline((SDL_GPURenderPass*)renderPassHandle, (SDL_GPUGraphicsPipeline*)m_handle);
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}
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} // namespace ia::iae
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