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restore current blendfunc after using default

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This commit is contained in:
itsmattkc
2018-12-21 22:05:33 +11:00
parent 1ed857483d
commit fb36c79eea
1 changed files with 13 additions and 1 deletions
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ui/viewerwidget.cpp
+13 -1
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@@ -342,6 +342,14 @@ GLuint ViewerWidget::draw_clip(QOpenGLFramebufferObject* fbo, GLuint texture, bo
fbo->bind();
if (clear) glClear(GL_COLOR_BUFFER_BIT);
// get current blend mode
GLint src_rgb, src_alpha, dst_rgb, dst_alpha;
glGetIntegerv(GL_BLEND_SRC_RGB, &src_rgb);
glGetIntegerv(GL_BLEND_SRC_ALPHA, &src_alpha);
glGetIntegerv(GL_BLEND_DST_RGB, &dst_rgb);
glGetIntegerv(GL_BLEND_DST_ALPHA, &dst_alpha);
GL_DEFAULT_BLEND
glBindTexture(GL_TEXTURE_2D, texture);
@@ -358,7 +366,11 @@ GLuint ViewerWidget::draw_clip(QOpenGLFramebufferObject* fbo, GLuint texture, bo
glBindTexture(GL_TEXTURE_2D, 0);
fbo->release();
if (default_fbo != NULL) default_fbo->bind();
// restore previous blendFunc
glBlendFuncSeparate(src_rgb, dst_rgb, src_alpha, dst_alpha);
if (default_fbo != NULL) default_fbo->bind();
glPopMatrix();
return fbo->texture();