vladislavbelov
62e589ab76
Comments By: phosit, Stan Tested By: Langbart, phosit Differential Revision: https://code.wildfiregames.com/D4636 This was SVN commit r26858.
400 lines
13 KiB
C++
400 lines
13 KiB
C++
/* Copyright (C) 2022 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. 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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* 0 A.D. 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 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "renderer/DebugRenderer.h"
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#include "graphics/Camera.h"
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#include "graphics/Color.h"
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#include "graphics/ShaderManager.h"
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#include "graphics/ShaderProgram.h"
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#include "maths/BoundingBoxAligned.h"
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#include "maths/Brush.h"
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#include "maths/Matrix3D.h"
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#include "maths/Vector3D.h"
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#include "ps/CStrInternStatic.h"
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#include "renderer/backend/IDeviceCommandContext.h"
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#include "renderer/Renderer.h"
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#include "renderer/SceneRenderer.h"
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#include <cmath>
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namespace
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{
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void SetGraphicsPipelineStateFromTechAndColor(
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Renderer::Backend::IDeviceCommandContext* deviceCommandContext,
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const CShaderTechniquePtr& tech, const CColor& color, const bool depthTestEnabled = true,
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const bool wireframe = false)
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{
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Renderer::Backend::GraphicsPipelineStateDesc pipelineStateDesc = tech->GetGraphicsPipelineStateDesc();
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pipelineStateDesc.depthStencilState.depthTestEnabled = depthTestEnabled;
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if (color.a != 1.0f)
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{
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pipelineStateDesc.blendState.enabled = true;
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pipelineStateDesc.blendState.srcColorBlendFactor = pipelineStateDesc.blendState.srcAlphaBlendFactor =
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Renderer::Backend::BlendFactor::SRC_ALPHA;
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pipelineStateDesc.blendState.dstColorBlendFactor = pipelineStateDesc.blendState.dstAlphaBlendFactor =
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Renderer::Backend::BlendFactor::ONE_MINUS_SRC_ALPHA;
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pipelineStateDesc.blendState.colorBlendOp = pipelineStateDesc.blendState.alphaBlendOp =
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Renderer::Backend::BlendOp::ADD;
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}
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else
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pipelineStateDesc.blendState.enabled = false;
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if (wireframe)
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pipelineStateDesc.rasterizationState.polygonMode = Renderer::Backend::PolygonMode::LINE;
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pipelineStateDesc.rasterizationState.cullMode = Renderer::Backend::CullMode::NONE;
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deviceCommandContext->SetGraphicsPipelineState(pipelineStateDesc);
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}
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} // anonymous namespace
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void CDebugRenderer::DrawLine(
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const CVector3D& from, const CVector3D& to, const CColor& color,
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const float width, const bool depthTestEnabled)
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{
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if (from == to)
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return;
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DrawLine({from, to}, color, width, depthTestEnabled);
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}
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void CDebugRenderer::DrawLine(
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const std::vector<CVector3D>& line, const CColor& color,
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const float width, const bool depthTestEnabled)
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{
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CShaderTechniquePtr debugLineTech =
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g_Renderer.GetShaderManager().LoadEffect(str_debug_line);
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Renderer::Backend::IDeviceCommandContext* deviceCommandContext =
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g_Renderer.GetDeviceCommandContext();
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SetGraphicsPipelineStateFromTechAndColor(
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deviceCommandContext, debugLineTech, color, depthTestEnabled);
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deviceCommandContext->BeginPass();
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const CCamera& viewCamera = g_Renderer.GetSceneRenderer().GetViewCamera();
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Renderer::Backend::IShaderProgram* debugLineShader = debugLineTech->GetShader();
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const CMatrix3D transform = viewCamera.GetViewProjection();
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deviceCommandContext->SetUniform(
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debugLineShader->GetBindingSlot(str_transform), transform.AsFloatArray());
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deviceCommandContext->SetUniform(
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debugLineShader->GetBindingSlot(str_color), color.AsFloatArray());
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const CVector3D cameraIn = viewCamera.GetOrientation().GetIn();
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std::vector<float> vertices;
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vertices.reserve(line.size() * 6 * 3);
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#define ADD(position) \
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vertices.emplace_back((position).X); \
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vertices.emplace_back((position).Y); \
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vertices.emplace_back((position).Z);
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for (size_t idx = 1; idx < line.size(); ++idx)
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{
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const CVector3D from = line[idx - 1];
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const CVector3D to = line[idx];
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const CVector3D direction = (to - from).Normalized();
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const CVector3D view = direction.Dot(cameraIn) > 0.9f ?
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CVector3D(0.0f, 1.0f, 0.0f) :
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cameraIn;
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const CVector3D offset = view.Cross(direction).Normalized() * width;
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ADD(from + offset)
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ADD(to - offset)
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ADD(to + offset)
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ADD(from + offset)
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ADD(from - offset)
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ADD(to - offset)
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}
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#undef ADD
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deviceCommandContext->SetVertexAttributeFormat(
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Renderer::Backend::VertexAttributeStream::POSITION,
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Renderer::Backend::Format::R32G32B32_SFLOAT, 0, 0, 0);
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deviceCommandContext->SetVertexBufferData(0, vertices.data());
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deviceCommandContext->Draw(0, vertices.size() / 3);
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deviceCommandContext->EndPass();
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}
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void CDebugRenderer::DrawCircle(const CVector3D& origin, const float radius, const CColor& color)
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{
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CShaderTechniquePtr debugCircleTech =
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g_Renderer.GetShaderManager().LoadEffect(str_debug_line);
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Renderer::Backend::IDeviceCommandContext* deviceCommandContext =
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g_Renderer.GetDeviceCommandContext();
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SetGraphicsPipelineStateFromTechAndColor(
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deviceCommandContext, debugCircleTech, color);
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deviceCommandContext->BeginPass();
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const CCamera& camera = g_Renderer.GetSceneRenderer().GetViewCamera();
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Renderer::Backend::IShaderProgram* debugCircleShader = debugCircleTech->GetShader();
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const CMatrix3D transform = camera.GetViewProjection();
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deviceCommandContext->SetUniform(
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debugCircleShader->GetBindingSlot(str_transform), transform.AsFloatArray());
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deviceCommandContext->SetUniform(
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debugCircleShader->GetBindingSlot(str_color), color.AsFloatArray());
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const CVector3D cameraUp = camera.GetOrientation().GetUp();
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const CVector3D cameraLeft = camera.GetOrientation().GetLeft();
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std::vector<float> vertices;
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#define ADD(position) \
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vertices.emplace_back((position).X); \
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vertices.emplace_back((position).Y); \
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vertices.emplace_back((position).Z);
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constexpr size_t segments = 16;
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for (size_t idx = 0; idx <= segments; ++idx)
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{
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const float angle = M_PI * 2.0f * idx / segments;
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const CVector3D offset = cameraUp * sin(angle) - cameraLeft * cos(angle);
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const float nextAngle = M_PI * 2.0f * (idx + 1) / segments;
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const CVector3D nextOffset = cameraUp * sin(nextAngle) - cameraLeft * cos(nextAngle);
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ADD(origin)
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ADD(origin + offset * radius)
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ADD(origin + nextOffset * radius)
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}
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#undef ADD
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deviceCommandContext->SetVertexAttributeFormat(
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Renderer::Backend::VertexAttributeStream::POSITION,
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Renderer::Backend::Format::R32G32B32_SFLOAT, 0, 0, 0);
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deviceCommandContext->SetVertexBufferData(0, vertices.data());
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deviceCommandContext->Draw(0, vertices.size() / 3);
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deviceCommandContext->EndPass();
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}
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void CDebugRenderer::DrawCameraFrustum(const CCamera& camera, const CColor& color, int intermediates, bool wireframe)
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{
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CCamera::Quad nearPoints;
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CCamera::Quad farPoints;
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camera.GetViewQuad(camera.GetNearPlane(), nearPoints);
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camera.GetViewQuad(camera.GetFarPlane(), farPoints);
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for (int i = 0; i < 4; ++i)
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{
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nearPoints[i] = camera.m_Orientation.Transform(nearPoints[i]);
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farPoints[i] = camera.m_Orientation.Transform(farPoints[i]);
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}
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CShaderTechniquePtr overlayTech =
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g_Renderer.GetShaderManager().LoadEffect(str_debug_line);
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Renderer::Backend::IDeviceCommandContext* deviceCommandContext =
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g_Renderer.GetDeviceCommandContext();
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SetGraphicsPipelineStateFromTechAndColor(
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deviceCommandContext, overlayTech, color, true, wireframe);
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deviceCommandContext->BeginPass();
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Renderer::Backend::IShaderProgram* overlayShader = overlayTech->GetShader();
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const CMatrix3D transform = g_Renderer.GetSceneRenderer().GetViewCamera().GetViewProjection();
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deviceCommandContext->SetUniform(
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overlayShader->GetBindingSlot(str_transform), transform.AsFloatArray());
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deviceCommandContext->SetUniform(
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overlayShader->GetBindingSlot(str_color), color.AsFloatArray());
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std::vector<float> vertices;
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#define ADD(position) \
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vertices.emplace_back((position).X); \
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vertices.emplace_back((position).Y); \
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vertices.emplace_back((position).Z);
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// Near plane.
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ADD(nearPoints[0]);
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ADD(nearPoints[1]);
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ADD(nearPoints[2]);
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ADD(nearPoints[0]);
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ADD(nearPoints[2]);
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ADD(nearPoints[3]);
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// Far plane.
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ADD(farPoints[0]);
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ADD(farPoints[1]);
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ADD(farPoints[2]);
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ADD(farPoints[0]);
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ADD(farPoints[2]);
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ADD(farPoints[3]);
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// Intermediate planes.
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CVector3D intermediatePoints[4];
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for (int i = 0; i < intermediates; ++i)
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{
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const float t = (i + 1.0f) / (intermediates + 1.0f);
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for (int j = 0; j < 4; ++j)
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intermediatePoints[j] = nearPoints[j] * t + farPoints[j] * (1.0f - t);
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ADD(intermediatePoints[0]);
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ADD(intermediatePoints[1]);
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ADD(intermediatePoints[2]);
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ADD(intermediatePoints[0]);
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ADD(intermediatePoints[2]);
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ADD(intermediatePoints[3]);
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}
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deviceCommandContext->SetVertexAttributeFormat(
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Renderer::Backend::VertexAttributeStream::POSITION,
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Renderer::Backend::Format::R32G32B32_SFLOAT, 0, 0, 0);
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deviceCommandContext->SetVertexBufferData(0, vertices.data());
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deviceCommandContext->Draw(0, vertices.size() / 3);
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vertices.clear();
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// Connection lines.
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for (int i = 0; i < 4; ++i)
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{
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const int nextI = (i + 1) % 4;
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ADD(nearPoints[i]);
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ADD(farPoints[nextI]);
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ADD(farPoints[i]);
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ADD(nearPoints[i]);
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ADD(nearPoints[nextI]);
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ADD(farPoints[nextI]);
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}
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deviceCommandContext->SetVertexAttributeFormat(
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Renderer::Backend::VertexAttributeStream::POSITION,
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Renderer::Backend::Format::R32G32B32_SFLOAT, 0, 0, 0);
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deviceCommandContext->SetVertexBufferData(0, vertices.data());
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deviceCommandContext->Draw(0, vertices.size() / 3);
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#undef ADD
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deviceCommandContext->EndPass();
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}
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void CDebugRenderer::DrawBoundingBox(
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const CBoundingBoxAligned& boundingBox, const CColor& color,
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bool wireframe)
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{
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DrawBoundingBox(
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boundingBox, color,
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g_Renderer.GetSceneRenderer().GetViewCamera().GetViewProjection(), wireframe);
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}
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void CDebugRenderer::DrawBoundingBox(
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const CBoundingBoxAligned& boundingBox, const CColor& color,
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const CMatrix3D& transform, bool wireframe)
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{
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CShaderTechniquePtr shaderTech = g_Renderer.GetShaderManager().LoadEffect(str_solid);
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Renderer::Backend::IDeviceCommandContext* deviceCommandContext =
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g_Renderer.GetDeviceCommandContext();
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SetGraphicsPipelineStateFromTechAndColor(
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deviceCommandContext, shaderTech, color, true, wireframe);
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deviceCommandContext->BeginPass();
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Renderer::Backend::IShaderProgram* shader = shaderTech->GetShader();
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deviceCommandContext->SetUniform(
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shader->GetBindingSlot(str_transform), transform.AsFloatArray());
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deviceCommandContext->SetUniform(
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shader->GetBindingSlot(str_color), color.AsFloatArray());
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std::vector<float> data;
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#define ADD_FACE(x, y, z) \
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ADD_PT(0, 0, x, y, z); ADD_PT(1, 0, x, y, z); ADD_PT(1, 1, x, y, z); \
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ADD_PT(1, 1, x, y, z); ADD_PT(0, 1, x, y, z); ADD_PT(0, 0, x, y, z);
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#define ADD_PT(u_, v_, x, y, z) \
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STMT(int u = u_; int v = v_; \
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data.push_back(boundingBox[x].X); \
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data.push_back(boundingBox[y].Y); \
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data.push_back(boundingBox[z].Z); \
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)
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ADD_FACE(u, v, 0);
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ADD_FACE(0, u, v);
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ADD_FACE(u, 0, 1-v);
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ADD_FACE(u, 1-v, 1);
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ADD_FACE(1, u, 1-v);
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ADD_FACE(u, 1, v);
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#undef ADD_FACE
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deviceCommandContext->SetVertexAttributeFormat(
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Renderer::Backend::VertexAttributeStream::POSITION,
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Renderer::Backend::Format::R32G32B32_SFLOAT, 0, 0, 0);
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deviceCommandContext->SetVertexBufferData(0, data.data());
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deviceCommandContext->Draw(0, 6 * 6);
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deviceCommandContext->EndPass();
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}
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void CDebugRenderer::DrawBrush(const CBrush& brush, const CColor& color, bool wireframe)
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{
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CShaderTechniquePtr shaderTech = g_Renderer.GetShaderManager().LoadEffect(str_solid);
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Renderer::Backend::IDeviceCommandContext* deviceCommandContext =
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g_Renderer.GetDeviceCommandContext();
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SetGraphicsPipelineStateFromTechAndColor(
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deviceCommandContext, shaderTech, color, true, wireframe);
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deviceCommandContext->BeginPass();
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Renderer::Backend::IShaderProgram* shader = shaderTech->GetShader();
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const CMatrix3D transform = g_Renderer.GetSceneRenderer().GetViewCamera().GetViewProjection();
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deviceCommandContext->SetUniform(
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shader->GetBindingSlot(str_transform), transform.AsFloatArray());
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deviceCommandContext->SetUniform(
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shader->GetBindingSlot(str_color), color.AsFloatArray());
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std::vector<float> data;
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std::vector<std::vector<size_t>> faces;
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brush.GetFaces(faces);
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#define ADD_VERT(a) \
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STMT( \
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data.push_back(brush.GetVertices()[faces[i][a]].X); \
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data.push_back(brush.GetVertices()[faces[i][a]].Y); \
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data.push_back(brush.GetVertices()[faces[i][a]].Z); \
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)
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for (size_t i = 0; i < faces.size(); ++i)
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{
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// Triangulate into (0,1,2), (0,2,3), ...
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for (size_t j = 1; j < faces[i].size() - 2; ++j)
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{
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ADD_VERT(0);
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ADD_VERT(j);
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ADD_VERT(j+1);
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}
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}
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#undef ADD_VERT
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deviceCommandContext->SetVertexAttributeFormat(
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Renderer::Backend::VertexAttributeStream::POSITION,
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Renderer::Backend::Format::R32G32B32_SFLOAT, 0, 0, 0);
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deviceCommandContext->SetVertexBufferData(0, data.data());
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deviceCommandContext->Draw(0, data.size() / 5);
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deviceCommandContext->EndPass();
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}
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