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https://github.com/ultimatepp/ultimatepp.git
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119 lines
No EOL
3.7 KiB
C++
119 lines
No EOL
3.7 KiB
C++
#include "GLDraw.h"
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namespace Upp {
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extern void (*restore_gl_viewport__)(); // in Draw/DrawUtil.cpp
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void GLTextureDraw::Clear()
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{
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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glBindRenderbuffer(GL_RENDERBUFFER, 0);
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glActiveTexture(GL_TEXTURE0);
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if(texture)
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glDeleteTextures(1, &texture);
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if(rbo)
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glDeleteRenderbuffers(1, &rbo);
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if(framebuffer)
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glDeleteFramebuffers(1, &framebuffer);
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framebuffer = rbo = texture = 0;
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(*restore_gl_viewport__)();
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}
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GLTexture GLTextureDraw::GetResult()
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{
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ASSERT(texture);
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Flush();
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GLTexture t;
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if(msaa > 1) {
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GLuint framebuffer2, texture2, rbo2;
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glGenFramebuffers(1, &framebuffer2);
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glBindFramebuffer(GL_FRAMEBUFFER, framebuffer2);
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glGenTextures(1, &texture2);
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glBindTexture(GL_TEXTURE_2D, texture2);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, sz.cx, sz.cy, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
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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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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture2, 0);
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glBindTexture(GL_TEXTURE_2D, 0);
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glGenRenderbuffers(1, &rbo2);
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glBindRenderbuffer(GL_RENDERBUFFER, rbo2);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, sz.cx, sz.cy);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, rbo2);
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glBindRenderbuffer(GL_RENDERBUFFER, 0);
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if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
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NEVER_("Failed to create final texture draw framebuffer");
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glBindFramebuffer(GL_READ_FRAMEBUFFER, framebuffer);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, framebuffer2);
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glBlitFramebuffer(0, 0, sz.cx, sz.cy, 0, 0, sz.cx, sz.cy, GL_COLOR_BUFFER_BIT, GL_NEAREST);
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t.Set(texture2, sz);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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glBindRenderbuffer(GL_RENDERBUFFER, 0);
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glActiveTexture(GL_TEXTURE0);
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glDeleteRenderbuffers(1, &rbo2);
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glDeleteFramebuffers(1, &framebuffer2);
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Clear();
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}
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else {
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t.Set(texture, sz);
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texture = 0;
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Clear();
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}
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return t;
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}
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void GLTextureDraw::Create(Size sz_, int msaa_)
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{
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sz = sz_;
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msaa = msaa_;
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glGenFramebuffers(1, &framebuffer);
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glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
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glGenTextures(1, &texture);
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if(msaa > 1) {
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glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, texture);
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glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, msaa, GL_RGB, sz.cx, sz.cy, GL_TRUE);
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glEnable(GL_MULTISAMPLE);
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glBindTexture(GL_TEXTURE_2D_MULTISAMPLE, 0);
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}
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else {
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glBindTexture(GL_TEXTURE_2D, texture);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, sz.cx, sz.cy, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
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}
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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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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, msaa > 1 ? GL_TEXTURE_2D_MULTISAMPLE : GL_TEXTURE_2D, texture, 0);
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glGenRenderbuffers(1, &rbo);
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glBindRenderbuffer(GL_RENDERBUFFER, rbo);
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if(msaa > 1)
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glRenderbufferStorageMultisample(GL_RENDERBUFFER, msaa, GL_DEPTH24_STENCIL8, sz.cx, sz.cy);
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else
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glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, sz.cx, sz.cy);
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glBindRenderbuffer(GL_RENDERBUFFER, 0);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, rbo);
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if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
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NEVER_("Failed to create texture draw framebuffer");
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glClearColor(0, 0, 0, 0);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glViewport(0, 0, sz.cx, sz.cy);
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DrawGL::Init(sz, 1);
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dd.vs.cy *= -1;
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dd.off = Sizef(-1, -1);
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}
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}; |