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Cache results of multiple render target support

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Change-Id: I9e706690d4d2ddaae6c84b0e24de7698704e862d
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
This commit is contained in:
Sean Harmer 2016-02-13 14:23:48 +00:00
parent 48ca7f6220
commit b725f4e144
1 changed files with 3 additions and 2 deletions
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5
src/gui/opengl/qopenglframebufferobject.cpp
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@ -1728,7 +1728,8 @@ void QOpenGLFramebufferObject::blitFramebuffer(QOpenGLFramebufferObject *target,
extensions.glBindFramebuffer(GL_READ_FRAMEBUFFER, source ? source->handle() : defaultFboId);
extensions.glBindFramebuffer(GL_DRAW_FRAMEBUFFER, target ? target->handle() : defaultFboId);
if (extensions.hasOpenGLFeature(QOpenGLFunctions::MultipleRenderTargets)) {
const bool supportsMRT = extensions.hasOpenGLFeature(QOpenGLFunctions::MultipleRenderTargets);
if (supportsMRT) {
extensions.glReadBuffer(GL_COLOR_ATTACHMENT0 + readColorAttachmentIndex);
if (target) {
GLenum drawBuf = GL_COLOR_ATTACHMENT0 + drawColorAttachmentIndex;
@ -1740,7 +1741,7 @@ void QOpenGLFramebufferObject::blitFramebuffer(QOpenGLFramebufferObject *target,
tx0, ty0, tx1, ty1,
buffers, filter);
if (extensions.hasOpenGLFeature(QOpenGLFunctions::MultipleRenderTargets))
if (supportsMRT)
extensions.glReadBuffer(GL_COLOR_ATTACHMENT0);
switch (restorePolicy) {