Texture and FrameBuffer classes implemented
Joey Pollack
3 years ago
parent
e74ba8594b
commit
ec492b119f
@ -1,21 +0,0 @@
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/******************************************************************************
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* File - frame_buffer.h
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* Author - Joey Pollack
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* Date - 2022/07/13 (y/m/d)
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* Mod Date - 2022/07/13 (y/m/d)
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* Description - OpenGL Frame buffer object
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******************************************************************************/
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#ifndef LUNARIUM_FRAME_BUFFER_H_
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#define LUNARIUM_FRAME_BUFFER_H_
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namespace lunarium
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{
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class FrameBuffer
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{
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};
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}
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#endif // LUNARIUM_FRAME_BUFFER_H_
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@ -1,29 +0,0 @@
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/******************************************************************************
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* File - render_context.h
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* Author - Joey Pollack
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* Date - 2022/07/13 (y/m/d)
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* Mod Date - 2022/07/13 (y/m/d)
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* Description - General setup/shutdown for the render system
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******************************************************************************/
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#ifndef LUNARIUM_RENDER_CONTEXT_H_
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#define LUNARIUM_RENDER_CONTEXT_H_
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namespace lunarium
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{
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class Window;
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// NOTE:
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// This class will probably not be exposed outside of the Core
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// The Core will expose Renderer2D instead
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class RenderContext
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{
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private:
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Window* mpWindow;
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};
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}
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#endif // LUNARIUM_RENDER_CONTEXT_H_
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@ -0,0 +1,94 @@
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/******************************************************************************
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* File - frame_buffer.h
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* Author - Joey Pollack
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* Date - 2022/07/13 (y/m/d)
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* Mod Date - 2022/07/13 (y/m/d)
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* Description - OpenGL Frame buffer object
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******************************************************************************/
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#include "frame_buffer.h"
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#include "texture.h"
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#include <utils/logger.h>
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#include <glad/gl.h>
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namespace lunarium
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{
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FrameBuffer::FrameBuffer()
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: mGLID(0), mTexture(nullptr), mRenderBufferID(0)
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{
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}
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FrameBuffer* FrameBuffer::Create(int width, int height)
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{
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FrameBuffer* fb = new FrameBuffer;
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fb->Resize(width, height);
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return fb;
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}
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void FrameBuffer::Destroy(FrameBuffer** ppBuf)
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{
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(*ppBuf)->Unbind();
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glDeleteFramebuffers(1, &(*ppBuf)->mGLID);
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(*ppBuf) = nullptr;
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}
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void FrameBuffer::Resize(int width, int height)
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{
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if (mGLID != 0)
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{
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glDeleteFramebuffers(1, &mGLID);
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}
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glGenFramebuffers(1, &mGLID);
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Bind();
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if (mTexture)
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{
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Texture::Destroy(&mTexture);
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}
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mTexture = Texture::Create(nullptr, width, height);
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// Attach texture
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mTexture->GetGLID(), 0);
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// Render Buffer for depth/stencil testing
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if (mRenderBufferID)
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{
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glDeleteRenderbuffers(1, &mRenderBufferID);
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}
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glGenRenderbuffers(1, &mRenderBufferID);
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glBindRenderbuffer(GL_RENDERBUFFER, mRenderBufferID);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
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glBindRenderbuffer(GL_RENDERBUFFER, 0);
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// Atach the render buffer
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, mRenderBufferID);
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if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
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{
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Logger::Error(LogCategory::GRAPHICS, "Failed to create FrameBuffer object");
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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Unbind();
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}
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void FrameBuffer::Bind()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, mGLID);
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}
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void FrameBuffer::Unbind()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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}
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Texture* FrameBuffer::GetTexture()
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{
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return mTexture;
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}
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}
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@ -0,0 +1,41 @@
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/******************************************************************************
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* File - frame_buffer.h
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* Author - Joey Pollack
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* Date - 2022/07/13 (y/m/d)
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* Mod Date - 2022/07/13 (y/m/d)
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* Description - OpenGL Frame buffer object
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******************************************************************************/
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#ifndef LUNARIUM_FRAME_BUFFER_H_
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#define LUNARIUM_FRAME_BUFFER_H_
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#include <core/common_defs.h>
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namespace lunarium
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{
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class Texture;
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class FrameBuffer
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{
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public:
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static FrameBuffer* Create(int width, int height);
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static void Destroy(FrameBuffer** ppBuf);
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void Resize(int width, int height);
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void Bind();
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void Unbind();
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Texture* GetTexture();
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private:
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u32 mGLID;
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Texture* mTexture;
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u32 mRenderBufferID;
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private:
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FrameBuffer();
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};
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}
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#endif // LUNARIUM_FRAME_BUFFER_H_
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@ -0,0 +1,142 @@
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/******************************************************************************
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* File - render_context.cpp
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* Author - Joey Pollack
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* Date - 2022/07/13 (y/m/d)
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* Mod Date - 2022/07/13 (y/m/d)
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* Description - General setup/shutdown for the render system
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******************************************************************************/
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#include "render_context.h"
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#include <platform/window.h>
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#include <utils/logger.h>
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namespace lunarium
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{
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RenderContext::RenderContext()
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: mIsInit(false), mpWindow(nullptr)
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{
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}
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OpRes RenderContext::Initialize(Window* pWindow, bool enableDebugMessages = true)
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{
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if (!pWindow->IsInit())
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{
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return OpRes::Fail("Can not initialize Render Context. The Window must be initialized first!");
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}
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if (mIsInit)
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{
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return OpRes::Fail("Can not initialize Render Context. It is already initialized.");
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}
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mpWindow = pWindow;
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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if (enableDebugMessages)
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{
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InitDebugMsgSystem();
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}
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// TODO: Init render subsystems
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// TODO: Init text rendering
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// OpRes res = mText.Initialize();
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// if (Failed(res))
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// {
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// Logger::Warn(LogCategory::GRAPHICS, "Could not initialized the text renderer - %s", res.Description);
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// }
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// Load the default internal font
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// const char* font = "OpenSans-Regular.ttf";
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// // GenerateFontFileAt(font);
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// mDefaultFont = mText.LoadFont(OpenFontData, OpenDataSize, font);
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// if (mDefaultFont < 0)
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// {
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// Logger::Warn(LogCategory::GRAPHICS, "Unable to load the default font: %s", font);
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// }
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// else
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// {
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// Logger::Info(LogCategory::GRAPHICS, "Successfully created default font: %s", font);
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// }
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return OpRes::OK();
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}
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void RenderContext::Shutdown()
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{
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}
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void RenderContext::SwapBuffers()
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{
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mpWindow->SwapBuffers();
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}
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////////////////////////////////////////////////////////////
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// DEBUG MESSAGE CALLBACK
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////////////////////////////////////////////////////////////
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std::map<int, std::string> RenderContext::mDebugMsgTypes;
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std::map<int, std::string> RenderContext::mDebugMsgSources;
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std::map<int, std::string> RenderContext::mDebugMsgSeverity;
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void GLAPIENTRY MessageCallback(GLenum source, GLenum type, GLuint id,
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GLenum severity, GLsizei length, const GLchar* message, const void* userParam)
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{
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if (type == GL_DEBUG_TYPE_ERROR)
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{
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Logger::GIError(LogCategory::GRAPHICS,
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"%s (type: %s, source: %s, severity: %s), message: %s",
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(type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : ""),
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RenderContext::mDebugMsgSources[source].c_str(),
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RenderContext::mDebugMsgTypes[type].c_str(),
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RenderContext::mDebugMsgSeverity[severity].c_str(),
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message);
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}
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else
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{
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Logger::GIDebug(LogCategory::GRAPHICS,
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"%s (type: %s, source: %s, severity: %s), message: %s",
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(type == GL_DEBUG_TYPE_ERROR ? "** GL ERROR **" : ""),
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RenderContext::mDebugMsgSources[source].c_str(),
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RenderContext::mDebugMsgTypes[type].c_str(),
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RenderContext::mDebugMsgSeverity[severity].c_str(),
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message);
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}
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}
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void RenderContext::InitDebugMsgSystem()
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{
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// DEBUG MESSAGE TYPES
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mDebugMsgTypes[GL_DEBUG_TYPE_ERROR] = "ERROR";
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mDebugMsgTypes[GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR] = "DEPRECATED_BEHAVIOR";
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mDebugMsgTypes[GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR] = "UNDEFINED_BEHAVIOR";
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mDebugMsgTypes[GL_DEBUG_TYPE_PORTABILITY] = "PORTABILITY";
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mDebugMsgTypes[GL_DEBUG_TYPE_PERFORMANCE] = "PERFORMANCE";
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mDebugMsgTypes[GL_DEBUG_TYPE_OTHER] = "OTHER";
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mDebugMsgTypes[GL_DEBUG_TYPE_MARKER] = "MARKER";
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mDebugMsgTypes[GL_DEBUG_TYPE_PUSH_GROUP] = "PUSH_GROUP";
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mDebugMsgTypes[GL_DEBUG_TYPE_POP_GROUP] = "POP_GROUP";
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// DEBUG MESSAGE SOURCES
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mDebugMsgSources[GL_DEBUG_SOURCE_API] = "API";
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mDebugMsgSources[GL_DEBUG_SOURCE_WINDOW_SYSTEM] = "WINDOW_SYSTEM";
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mDebugMsgSources[GL_DEBUG_SOURCE_SHADER_COMPILER] = "SHADER_COMPILER";
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mDebugMsgSources[GL_DEBUG_SOURCE_THIRD_PARTY] = "THIRD_PARTY";
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mDebugMsgSources[GL_DEBUG_SOURCE_APPLICATION] = "APPLICATION";
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mDebugMsgSources[GL_DEBUG_SOURCE_OTHER] = "OTHER";
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// DEBUG MESSAGE SEVERITY
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mDebugMsgSeverity[GL_DEBUG_SEVERITY_HIGH] = "HIGH";
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mDebugMsgSeverity[GL_DEBUG_SEVERITY_MEDIUM] = "MEDIUM";
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mDebugMsgSeverity[GL_DEBUG_SEVERITY_LOW] = "LOW";
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mDebugMsgSeverity[GL_DEBUG_SEVERITY_NOTIFICATION] = "NOTIFICATION";
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glEnable(GL_DEBUG_OUTPUT);
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glDebugMessageCallback(MessageCallback, 0);
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}
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}
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@ -0,0 +1,54 @@
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/******************************************************************************
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* File - render_context.h
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* Author - Joey Pollack
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* Date - 2022/07/13 (y/m/d)
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* Mod Date - 2022/07/13 (y/m/d)
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* Description - General setup/shutdown for the render system
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******************************************************************************/
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#ifndef LUNARIUM_RENDER_CONTEXT_H_
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#define LUNARIUM_RENDER_CONTEXT_H_
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#include <core/common_defs.h>
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#include <utils/op_res.h>
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#include <glad/gl.h>
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#include <map>
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#include <string>
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namespace lunarium
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{
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class Window;
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// NOTE:
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// This class will probably not be exposed outside of the Core
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// The Core will expose Renderer2D instead
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class RenderContext
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{
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public:
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RenderContext();
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OpRes Initialize(Window* pWindow, bool enableDebugMessages = true);
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void Shutdown();
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void SwapBuffers();
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private:
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bool mIsInit;
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Window* mpWindow;
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// TODO: Manage window framebuffer?
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private: // HELPERS
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void InitDebugMsgSystem();
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private: // Debug Message System
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friend void GLAPIENTRY MessageCallback(GLenum source, GLenum type, GLuint id,
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GLenum severity, GLsizei length, const GLchar* message, const void* userParam);
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static std::map<int, std::string> mDebugMsgTypes;
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static std::map<int, std::string> mDebugMsgSources;
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static std::map<int, std::string> mDebugMsgSeverity;
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};
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}
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#endif // LUNARIUM_RENDER_CONTEXT_H_
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@ -0,0 +1,101 @@
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/******************************************************************************
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* File - texture.h
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* Author - Joey Pollack
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* Date - 2022/07/14 (y/m/d)
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* Mod Date - 2022/07/14 (y/m/d)
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* Description - OpenGL texture 2D
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******************************************************************************/
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#include "texture.h"
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#include <glad/gl.h>
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namespace lunarium
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{
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Texture::Texture()
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: mGLID(0), mWidth(0), mHeight(0), mFormat(TextureFormat::RGBA)
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{
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}
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Texture* Texture::Create(u8* data, u32 width, u32 height, TextureFormat format)
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{
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u32 formats[2] = { GL_RGB, GL_RGBA };
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Texture* t = new Texture();
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t->mFormat = format;
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t->mWidth = width;
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t->mHeight = height;
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glGenTextures(1, &t->mGLID);
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t->Bind();
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glTexImage2D(GL_TEXTURE_2D, 0, formats[format], width, height, 0, formats[format], GL_UNSIGNED_BYTE, data);
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glGenerateMipmap(GL_TEXTURE_2D);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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t->Unbind();
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return t;
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}
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void Texture::Destroy(Texture** ppTex)
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{
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(*ppTex)->Unbind();
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glDeleteTextures(1, &(*ppTex)->mGLID);
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(*ppTex) = nullptr;
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}
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void Texture::Bind() const
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{
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glBindTexture(GL_TEXTURE_2D, mGLID);
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}
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void Texture::Unbind() const
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{
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glBindTexture(GL_TEXTURE_2D, 0);
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}
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u32 Texture::GetGLID() const
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{
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return mGLID;
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}
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u64 Texture::GetGLID64() const
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{
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return (u64) mGLID;
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}
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TextureFormat Texture::GetFormat() const
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{
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return mFormat;
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}
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u32 Texture::GetWidth() const
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{
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return mWidth;
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}
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u32 Texture::GetHeight() const
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{
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return mHeight;
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}
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u8* Texture::GetPixels() const
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{
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u32 format_size[2] = { 3, 4 };
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u8* buffer = new u8[mWidth * mHeight * format_size[mFormat]];
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Bind();
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glGetTexImage(GL_TEXTURE_2D, 0, mFormat, GL_UNSIGNED_BYTE, (void*)buffer);
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Unbind();
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return buffer;
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}
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}
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@ -0,0 +1,50 @@
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/******************************************************************************
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* File - texture.h
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* Author - Joey Pollack
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* Date - 2022/07/14 (y/m/d)
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* Mod Date - 2022/07/14 (y/m/d)
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* Description - OpenGL texture 2D
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******************************************************************************/
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#ifndef LUNARIUM_TEXTURE_H_
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#define LUNARIUM_TEXTURE_H_
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#include <core/common_defs.h>
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namespace lunarium
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{
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enum TextureFormat
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{
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RGB,
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RGBA,
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};
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class Texture
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{
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public:
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static Texture* Create(u8* data = nullptr, u32 width = 1, u32 height = 1, TextureFormat format = TextureFormat::RGBA);
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static void Destroy(Texture** ppTex);
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void Bind() const;
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void Unbind() const;
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u32 GetGLID() const;
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u64 GetGLID64() const;
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TextureFormat GetFormat() const;
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u32 GetWidth() const;
|
||||
u32 GetHeight() const;
|
||||
|
||||
u8* GetPixels() const;
|
||||
|
||||
private:
|
||||
TextureFormat mFormat;
|
||||
u32 mWidth;
|
||||
u32 mHeight;
|
||||
u32 mGLID;
|
||||
|
||||
private:
|
||||
Texture();
|
||||
};
|
||||
}
|
||||
|
||||
#endif // LUNARIUM_TEXTURE_H_
|
||||
Loading…
Reference in New Issue