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Remove unused offscreen GL renderer.

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This was used for Gtk 2 and old macOS, but all of those use direct
rendering now.
This commit is contained in:
whitequark 2019-11-24 22:29:45 +00:00
parent a60d4df179
commit 07992cecaa
2 changed files with 0 additions and 74 deletions
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16
src/render/render.h
View File

@ -375,22 +375,6 @@ public:
std::shared_ptr<Pixmap> ReadFrame() override; std::shared_ptr<Pixmap> ReadFrame() override;
}; };
//-----------------------------------------------------------------------------
// 3d renderers
//-----------------------------------------------------------------------------
// An offscreen renderer based on OpenGL framebuffers.
class GlOffscreen {
public:
unsigned int framebuffer = 0;
unsigned int colorRenderbuffer = 0;
unsigned int depthRenderbuffer = 0;
std::vector<uint8_t> data;
bool Render(int width, int height, std::function<void()> renderFn);
void Clear();
};
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
// Factories // Factories
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------

58
src/render/rendergl.cpp
View File

@ -1,58 +0,0 @@
//-----------------------------------------------------------------------------
// Offscreen rendering in OpenGL using EGL and framebuffer objects.
//
// Copyright 2015-2016 whitequark
//-----------------------------------------------------------------------------
#ifdef __APPLE__
#include <OpenGL/gl.h>
#else
#define GL_GLEXT_PROTOTYPES
#include <GL/gl.h>
#endif
#include "solvespace.h"
void GlOffscreen::Clear() {
glDeleteRenderbuffersEXT(1, &depthRenderbuffer);
glDeleteRenderbuffersEXT(1, &colorRenderbuffer);
glDeleteFramebuffersEXT(1, &framebuffer);
*this = {};
}
bool GlOffscreen::Render(int width, int height, std::function<void()> renderFn) {
data.resize(width * height * 4);
if(framebuffer == 0)
glGenFramebuffersEXT(1, &framebuffer);
if(colorRenderbuffer == 0)
glGenRenderbuffersEXT(1, &colorRenderbuffer);
if(depthRenderbuffer == 0)
glGenRenderbuffersEXT(1, &depthRenderbuffer);
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebuffer);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, colorRenderbuffer);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA8, width, height);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
GL_RENDERBUFFER_EXT, colorRenderbuffer);
glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depthRenderbuffer);
glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, width, height);
glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
GL_RENDERBUFFER_EXT, depthRenderbuffer);
bool framebufferComplete =
glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) == GL_FRAMEBUFFER_COMPLETE_EXT;
if(framebufferComplete) {
renderFn();
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
glReadPixels(0, 0, width, height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, &data[0]);
#else
glReadPixels(0, 0, width, height, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8, &data[0]);
#endif
}
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
return framebufferComplete;
}