134 lines
2.6 KiB
C++
134 lines
2.6 KiB
C++
// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Renderer module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Renderer/RenderBuffer.hpp>
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#include <Nazara/Core/Error.hpp>
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#include <Nazara/Renderer/Context.hpp>
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#include <Nazara/Renderer/OpenGL.hpp>
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#include <Nazara/Utility/PixelFormat.hpp>
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#include <Nazara/Renderer/Debug.hpp>
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namespace Nz
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{
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RenderBuffer::RenderBuffer() :
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m_id(0)
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{
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}
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RenderBuffer::~RenderBuffer()
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{
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OnRenderBufferRelease(this);
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Destroy();
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}
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bool RenderBuffer::Create(PixelFormatType format, unsigned int width, unsigned int height)
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{
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Destroy();
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#if NAZARA_RENDERER_SAFE
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if (width == 0 || height == 0)
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{
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NazaraError("Invalid size");
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return false;
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}
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if (!PixelFormat::IsValid(format))
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{
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NazaraError("Invalid pixel format");
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return false;
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}
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#endif
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OpenGL::Format openglFormat;
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if (!OpenGL::TranslateFormat(format, &openglFormat, OpenGL::FormatType_RenderBuffer))
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{
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NazaraError("Failed to translate pixel format \"" + PixelFormat::GetName(format) + "\" into OpenGL format");
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return false;
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}
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GLuint renderBuffer = 0;
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glGenRenderbuffers(1, &renderBuffer);
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if (!renderBuffer)
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{
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NazaraError("Failed to create renderbuffer");
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return false;
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}
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GLint previous;
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glGetIntegerv(GL_RENDERBUFFER_BINDING, &previous);
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glBindRenderbuffer(GL_RENDERBUFFER, renderBuffer);
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glRenderbufferStorage(GL_RENDERBUFFER, openglFormat.internalFormat, width, height);
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if (previous != 0)
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glBindRenderbuffer(GL_RENDERBUFFER, previous);
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m_pixelFormat = format;
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m_height = height;
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m_id = renderBuffer;
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m_width = width;
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return true;
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}
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void RenderBuffer::Destroy()
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{
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if (m_id)
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{
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OnRenderBufferDestroy(this);
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Context::EnsureContext();
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GLuint renderBuffer = m_id;
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glDeleteRenderbuffers(1, &renderBuffer); // Les Renderbuffers sont partagés entre les contextes: Ne posera pas de problème
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m_id = 0;
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}
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}
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unsigned int RenderBuffer::GetHeight() const
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{
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return m_height;
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}
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PixelFormatType RenderBuffer::GetFormat() const
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{
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return m_pixelFormat;
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}
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unsigned int RenderBuffer::GetWidth() const
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{
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return m_width;
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}
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unsigned int RenderBuffer::GetOpenGLID() const
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{
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return m_id;
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}
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bool RenderBuffer::IsValid() const
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{
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return m_id != 0;
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}
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bool RenderBuffer::Initialize()
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{
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if (!RenderBufferLibrary::Initialize())
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{
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NazaraError("Failed to initialise library");
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return false;
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}
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return true;
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}
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void RenderBuffer::Uninitialize()
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{
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RenderBufferLibrary::Uninitialize();
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}
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RenderBufferLibrary::LibraryMap RenderBuffer::s_library;
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}
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