Reuse the same FBO when creating new preview images.
This commit is contained in:
Leonardo
+119
-105
@@ -41,10 +41,6 @@ lcContext::lcContext()
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#endif
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mFramebufferObject = 0;
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mFramebufferObjectMS = 0;
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mFramebufferTexture = 0;
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mFramebufferTextureMS = 0;
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mDepthRenderbufferObject = 0;
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mColor = lcVector4(0.0f, 0.0f, 0.0f, 0.0f);
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mWorldMatrix = lcMatrix44Identity();
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@@ -547,155 +543,186 @@ void lcContext::SetInterfaceColor(lcInterfaceColor InterfaceColor)
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SetColor(gInterfaceColors[InterfaceColor]);
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}
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bool lcContext::BeginRenderToTexture(int Width, int Height)
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void lcContext::ClearFramebuffer()
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{
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if (!mFramebufferObject)
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return;
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if (gSupportsFramebufferObjectARB)
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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#ifndef LC_OPENGLES
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else if (gSupportsFramebufferObjectEXT)
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glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
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#endif
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mFramebufferObject = 0;
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}
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lcFramebuffer lcContext::CreateFramebuffer(int Width, int Height, bool Depth, bool Multisample)
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{
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lcFramebuffer Framebuffer(Width, Height);
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if (gSupportsFramebufferObjectARB)
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{
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int Samples = gSupportsTexImage2DMultisample ? QGLFormat::defaultFormat().samples() : 1;
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int Samples = (Multisample && gSupportsTexImage2DMultisample) ? QGLFormat::defaultFormat().samples() : 1;
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glGenFramebuffers(1, &mFramebufferObject);
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glBindFramebuffer(GL_FRAMEBUFFER, mFramebufferObject);
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glGenFramebuffers(1, &Framebuffer.mObject);
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glBindFramebuffer(GL_FRAMEBUFFER, Framebuffer.mObject);
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glGenTextures(1, &mFramebufferTexture);
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BindTexture2D(mFramebufferTexture);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, Width, Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
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BindTexture2D(0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mFramebufferTexture, 0);
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glGenRenderbuffers(1, &mDepthRenderbufferObject);
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glGenTextures(1, &Framebuffer.mColorTexture);
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if (Depth)
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glGenRenderbuffers(1, &Framebuffer.mDepthRenderbuffer);
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if (Samples == 1)
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{
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glBindRenderbuffer(GL_RENDERBUFFER, mDepthRenderbufferObject);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, Width, Height);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, mDepthRenderbufferObject);
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BindTexture2D(Framebuffer.mColorTexture);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, Width, Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
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BindTexture2D(0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, Framebuffer.mColorTexture, 0);
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if (Depth)
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{
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glBindRenderbuffer(GL_RENDERBUFFER, Framebuffer.mDepthRenderbuffer);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT24, Width, Height);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, Framebuffer.mDepthRenderbuffer);
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}
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}
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else
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{
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if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
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{
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EndRenderToTexture();
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return false;
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}
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glGenFramebuffers(1, &mFramebufferObjectMS);
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glBindFramebuffer(GL_FRAMEBUFFER, mFramebufferObjectMS);
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glGenTextures(1, &mFramebufferTextureMS);
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BindTexture2DMS(mFramebufferTextureMS);
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BindTexture2DMS(Framebuffer.mColorTexture);
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glTexImage2DMultisample(GL_TEXTURE_2D_MULTISAMPLE, Samples, GL_RGBA, Width, Height, GL_TRUE);
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BindTexture2DMS(0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D_MULTISAMPLE, mFramebufferTextureMS, 0);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D_MULTISAMPLE, Framebuffer.mColorTexture, 0);
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glBindRenderbuffer(GL_RENDERBUFFER, mDepthRenderbufferObject);
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glRenderbufferStorageMultisample(GL_RENDERBUFFER, Samples, GL_DEPTH_COMPONENT24, Width, Height);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, mDepthRenderbufferObject);
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if (Depth)
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{
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glBindRenderbuffer(GL_RENDERBUFFER, Framebuffer.mDepthRenderbuffer);
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glRenderbufferStorageMultisample(GL_RENDERBUFFER, Samples, GL_DEPTH_COMPONENT24, Width, Height);
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glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, Framebuffer.mDepthRenderbuffer);
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}
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}
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if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
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{
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EndRenderToTexture();
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return false;
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}
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DestroyFramebuffer(Framebuffer);
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return true;
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glBindFramebuffer(GL_FRAMEBUFFER, mFramebufferObject);
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}
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#ifndef LC_OPENGLES
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if (gSupportsFramebufferObjectEXT)
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else if (gSupportsFramebufferObjectEXT)
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{
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glGenFramebuffersEXT(1, &mFramebufferObject);
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glGenTextures(1, &mFramebufferTexture);
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glGenFramebuffersEXT(1, &Framebuffer.mObject);
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glGenTextures(1, &Framebuffer.mColorTexture);
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BindTexture2D(mFramebufferTexture);
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BindTexture2D(Framebuffer.mColorTexture);
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glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, Width, Height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
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glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFramebufferObject);
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glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, mFramebufferTexture, 0);
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glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, Framebuffer.mObject);
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glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_2D, Framebuffer.mColorTexture, 0);
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glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFramebufferObject);
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glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, Framebuffer.mObject);
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glGenRenderbuffersEXT(1, &mDepthRenderbufferObject);
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glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, mDepthRenderbufferObject);
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glGenRenderbuffersEXT(1, &Framebuffer.mDepthRenderbuffer);
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glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, Framebuffer.mDepthRenderbuffer);
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glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT24, Width, Height);
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glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, mDepthRenderbufferObject);
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glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, Framebuffer.mDepthRenderbuffer);
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BindTexture2D(0);
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glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFramebufferObject);
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glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, Framebuffer.mObject);
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if (glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT) != GL_FRAMEBUFFER_COMPLETE_EXT)
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{
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EndRenderToTexture();
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return false;
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}
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DestroyFramebuffer(Framebuffer);
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return true;
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glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, mFramebufferObject);
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}
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#endif
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return false;
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return Framebuffer;
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}
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void lcContext::EndRenderToTexture()
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void lcContext::DestroyFramebuffer(lcFramebuffer& Framebuffer)
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{
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if (gSupportsFramebufferObjectARB)
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{
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glDeleteFramebuffers(1, &mFramebufferObject);
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mFramebufferObject = 0;
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glDeleteTextures(1, &mFramebufferTexture);
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mFramebufferTexture = 0;
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glDeleteFramebuffers(1, &mFramebufferObjectMS);
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mFramebufferObjectMS = 0;
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glDeleteTextures(1, &mFramebufferTextureMS);
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mFramebufferTextureMS = 0;
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glDeleteRenderbuffers(1, &mDepthRenderbufferObject);
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mDepthRenderbufferObject = 0;
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return;
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glDeleteFramebuffers(1, &Framebuffer.mObject);
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glDeleteTextures(1, &Framebuffer.mColorTexture);
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glDeleteRenderbuffers(1, &Framebuffer.mDepthRenderbuffer);
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}
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#ifndef LC_OPENGLES
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if (gSupportsFramebufferObjectEXT)
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else if (gSupportsFramebufferObjectEXT)
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{
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glDeleteFramebuffersEXT(1, &mFramebufferObject);
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mFramebufferObject = 0;
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glDeleteTextures(1, &mFramebufferTexture);
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mFramebufferTexture = 0;
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glDeleteRenderbuffersEXT(1, &mDepthRenderbufferObject);
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mDepthRenderbufferObject = 0;
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glDeleteFramebuffersEXT(1, &Framebuffer.mObject);
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glDeleteTextures(1, &Framebuffer.mColorTexture);
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glDeleteRenderbuffersEXT(1, &Framebuffer.mDepthRenderbuffer);
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}
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#endif
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Framebuffer.mObject = 0;
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Framebuffer.mColorTexture = 0;
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Framebuffer.mDepthRenderbuffer = 0;
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Framebuffer.mWidth = 0;
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Framebuffer.mHeight = 0;
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}
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QImage lcContext::GetRenderToTextureImage(int Width, int Height)
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void lcContext::BindFramebuffer(GLuint FramebufferObject)
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{
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QImage Image(Width, Height, QImage::Format_ARGB32);
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if (FramebufferObject == mFramebufferObject)
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return;
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GetRenderToTextureImage(Width, Height, Image.bits());
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if (gSupportsFramebufferObjectARB)
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glBindFramebuffer(GL_FRAMEBUFFER, FramebufferObject);
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#ifndef LC_OPENGLES
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else if (gSupportsFramebufferObjectEXT)
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glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, FramebufferObject);
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#endif
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mFramebufferObject = FramebufferObject;
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}
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std::pair<lcFramebuffer, lcFramebuffer> lcContext::CreateRenderFramebuffer(int Width, int Height)
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{
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if (gSupportsFramebufferObjectARB && QGLFormat::defaultFormat().samples() > 1)
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return std::make_pair(CreateFramebuffer(Width, Height, true, true), CreateFramebuffer(Width, Height, false, false));
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else
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return std::make_pair(CreateFramebuffer(Width, Height, false, true), lcFramebuffer());
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}
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void lcContext::DestroyRenderFramebuffer(std::pair<lcFramebuffer, lcFramebuffer>& RenderFramebuffer)
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{
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DestroyFramebuffer(RenderFramebuffer.first);
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DestroyFramebuffer(RenderFramebuffer.second);
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}
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QImage lcContext::GetRenderFramebufferImage(const std::pair<lcFramebuffer, lcFramebuffer>& RenderFramebuffer)
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{
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QImage Image(RenderFramebuffer.first.mWidth, RenderFramebuffer.first.mHeight, QImage::Format_ARGB32);
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GetRenderFramebufferImage(RenderFramebuffer, Image.bits());
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return Image;
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}
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void lcContext::GetRenderToTextureImage(int Width, int Height, quint8* Buffer)
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void lcContext::GetRenderFramebufferImage(const std::pair<lcFramebuffer, lcFramebuffer>& RenderFramebuffer, quint8* Buffer)
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{
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if (mFramebufferTextureMS)
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const int Width = RenderFramebuffer.first.mWidth;
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const int Height = RenderFramebuffer.first.mHeight;
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GLuint SavedFramebuffer = mFramebufferObject;
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if (RenderFramebuffer.second.IsValid())
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{
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glBindFramebuffer(GL_READ_FRAMEBUFFER, mFramebufferObjectMS);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mFramebufferObject);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, RenderFramebuffer.second.mObject);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, RenderFramebuffer.first.mObject);
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glBlitFrameBuffer(0, 0, Width, Height, 0, 0, Width, Height, GL_COLOR_BUFFER_BIT, GL_LINEAR);
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glBindFramebuffer(GL_FRAMEBUFFER, mFramebufferObject);
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BindFramebuffer(RenderFramebuffer.second);
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}
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else
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BindFramebuffer(RenderFramebuffer.first);
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glFinish();
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glReadPixels(0, 0, Width, Height, GL_RGBA, GL_UNSIGNED_BYTE, Buffer);
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if (mFramebufferTextureMS)
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glBindFramebuffer(GL_FRAMEBUFFER, mFramebufferObjectMS);
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BindFramebuffer(SavedFramebuffer);
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for (int y = 0; y < (Height + 1) / 2; y++)
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{
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@@ -716,19 +743,6 @@ void lcContext::GetRenderToTextureImage(int Width, int Height, quint8* Buffer)
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}
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}
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bool lcContext::SaveRenderToTextureImage(const QString& FileName, int Width, int Height)
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{
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QImage Image = GetRenderToTextureImage(Width, Height);
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QImageWriter Writer(FileName);
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bool Result = Writer.write(Image);
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if (!Result)
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QMessageBox::information(gMainWindow, tr("Error"), tr("Error writing to file '%1':\n%2").arg(FileName, Writer.errorString()));
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return Result;
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}
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lcVertexBuffer lcContext::CreateVertexBuffer(int Size, const void* Data)
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{
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lcVertexBuffer VertexBuffer;
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