124 lines
3.9 KiB
C++
124 lines
3.9 KiB
C++
/*
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* Modern effects for a modern Streamer
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* Copyright (C) 2017 Michael Fabian Dirks
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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 2 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "gs-vertexbuffer.h"
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#include <stdexcept>
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extern "C" {
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#pragma warning( push )
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#pragma warning( disable: 4201 )
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#include <libobs/obs.h>
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#pragma warning( pop )
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}
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const uint32_t defaultMaximumVertices = 65535u;
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GS::VertexBuffer::VertexBuffer(uint32_t maximumVertices) {
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m_maximumVertices = maximumVertices;
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m_uvwLayers = MAXIMUM_UVW_LAYERS;
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// Reserve Space
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m_vertexbufferdata.num = m_maximumVertices;
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m_data.positions.resize(m_maximumVertices);
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m_vertexbufferdata.points = m_data.positions.data();
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m_data.normals.resize(m_maximumVertices);
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m_vertexbufferdata.normals = m_data.normals.data();
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m_data.tangents.resize(m_maximumVertices);
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m_vertexbufferdata.tangents = m_data.tangents.data();
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m_data.colors.resize(m_maximumVertices);
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m_vertexbufferdata.colors = m_data.colors.data();
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m_vertexbufferdata.num_tex = m_uvwLayers;
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m_data.uvws.resize(m_uvwLayers);
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m_data.uvwdata.resize(m_uvwLayers);
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for (uint32_t n = 0; n < m_uvwLayers; n++) {
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m_data.uvws[n].resize(m_maximumVertices);
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m_data.uvwdata[n].width = 4;
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m_data.uvwdata[n].array = m_data.uvws[n].data();
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}
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m_vertexbufferdata.tvarray = m_data.uvwdata.data();
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// Allocate GPU
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obs_enter_graphics();
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m_vertexbuffer = gs_vertexbuffer_create(&m_vertexbufferdata, GS_DYNAMIC);
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obs_leave_graphics();
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if (!m_vertexbuffer) {
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throw std::runtime_error("Failed to create vertex buffer.");
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}
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}
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GS::VertexBuffer::VertexBuffer(gs_vertbuffer_t* vb) {
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m_vertexbuffer = vb;
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}
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GS::VertexBuffer::VertexBuffer() : VertexBuffer(defaultMaximumVertices) {}
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GS::VertexBuffer::VertexBuffer(std::vector<Vertex>& other) : VertexBuffer((uint32_t)other.capacity()) {
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std::copy(other.begin(), other.end(), this->end());
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}
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GS::VertexBuffer::VertexBuffer(VertexBuffer& other) : VertexBuffer(other.m_maximumVertices) {
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std::copy(other.begin(), other.end(), this->end());
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}
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GS::VertexBuffer::~VertexBuffer() {
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if (m_vertexbuffer) {
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std::memset(&m_vertexbufferdata, 0, sizeof(m_vertexbufferdata));
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obs_enter_graphics();
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gs_vertexbuffer_destroy(m_vertexbuffer);
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obs_leave_graphics();
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}
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m_vertexbuffer = nullptr;
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}
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void GS::VertexBuffer::set_uv_layers(uint32_t layers) {
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m_uvwLayers = layers;
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}
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uint32_t GS::VertexBuffer::uv_layers() {
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return m_uvwLayers;
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}
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gs_vertbuffer_t* GS::VertexBuffer::get(bool refreshGPU) {
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if (refreshGPU) {
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if (size() > m_maximumVertices)
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throw std::runtime_error("Too many vertices in Vertex Buffer.");
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for (size_t vertexIdx = 0; vertexIdx < size(); vertexIdx++) {
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Vertex& v = this->at(vertexIdx);
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vec3_copy(&m_data.positions[vertexIdx], &(v.position));
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vec3_copy(&m_data.normals[vertexIdx], &(v.normal));
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vec3_copy(&m_data.tangents[vertexIdx], &(v.tangent));
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for (size_t texcoordIdx = 0; texcoordIdx < m_uvwLayers; texcoordIdx++) {
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vec4_copy(&m_data.uvws[texcoordIdx][vertexIdx], &(v.uv[texcoordIdx]));
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}
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m_data.colors[vertexIdx] = v.color;
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}
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m_vertexbufferdata.num = size();
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m_vertexbufferdata.num_tex = m_uvwLayers;
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obs_enter_graphics();
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gs_vertexbuffer_flush(m_vertexbuffer);
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obs_leave_graphics();
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}
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return m_vertexbuffer;
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}
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gs_vertbuffer_t* GS::VertexBuffer::get() {
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return get(true);
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}
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