DebugRenderer.cpp

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#include "eepch.h"
 
#ifdef EE_EDITOR_BUILD
 
#include "DebugRenderer.h"
 
#include <ElevateEngine/Core/Core.h>
#include <ElevateEngine/Renderer/Shader/Shader.h>
#include <ElevateEngine/Renderer/Renderer.h>
#include <ElevateEngine/Renderer/Buffer.h>
 
void Elevate::DebugRenderer::Init()
{
    Get().InternalInit();
}
 
void Elevate::DebugRenderer::Render()
{
    Get().InternalRender();
}
 
void Elevate::DebugRenderer::InternalInit()
{
    InitLineRender();
}
 
void Elevate::DebugRenderer::InternalRender()
{
    Renderer::PushRenderState({ false, true, false });
    // Render the lines
    Renderer::ApplySystemUniforms(m_lineShader);
    Renderer::DrawArray(m_lineArray, DrawPrimitiveType::Lines);
    ClearDebugLines();
}
 
void Elevate::DebugRenderer::InitLineRender()
{
    m_lineShader = ShaderManager::LoadShader(
        "Debug",
        "editor://Shaders/debug.vert",
        "editor://Shaders/debug.frag",
        EE_SHADER_HEADER,
        EE_SHADER_HEADER
    );
 
    m_lineBuffer.reset(VertexBuffer::Create(m_debugLineArray.data(), (uint32_t)m_debugLineArray.size() * sizeof(DebugVertex)));
    m_lineBuffer->SetLayout({
        { ShaderDataType::Float3, "a_Position" },
        { ShaderDataType::Float4, "a_Color" },
    });
 
    m_lineArray.reset(VertexArray::Create());
    m_lineArray->AddVertexBuffer(m_lineBuffer);
    m_lineArray->Unbind();
}
 
void Elevate::DebugRenderer::ClearDebugLines()
{
    if (m_debugLineArray.size() > 0)
    {
        m_debugLineArray.clear();
 
        if (m_lineBuffer)
        {
            m_lineBuffer->Resize(0);
        }
    }
}
 
void Elevate::DebugRenderer::AddDebugLine(DebugLineData line)
{
    DebugRenderer& instance = Get();
    instance.m_debugLineArray.push_back({ line.Start, line.Color });
    instance.m_debugLineArray.push_back({ line.End,   line.Color });
 
    if (instance.m_lineBuffer)
    {
        instance.m_lineBuffer->SetData(instance.m_debugLineArray.data(), (uint32_t)instance.m_debugLineArray.size() * sizeof(DebugVertex));
    }
}
 
#endif