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GLCanvas requires 8bit alpha channel for picking checksums.

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This commit is contained in:
bubnikv 2019-08-07 14:55:34 +02:00
parent abd89e4f9a
commit a19a506ad8
1 changed files with 15 additions and 1 deletions
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16
src/slic3r/GUI/GLCanvas3DManager.cpp
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@ -290,7 +290,21 @@ GLCanvas3D* GLCanvas3DManager::get_canvas(wxGLCanvas* canvas)
wxGLCanvas* GLCanvas3DManager::create_wxglcanvas(wxWindow *parent) wxGLCanvas* GLCanvas3DManager::create_wxglcanvas(wxWindow *parent)
{ {
int attribList[] = { WX_GL_RGBA, WX_GL_DOUBLEBUFFER, WX_GL_DEPTH_SIZE, 24, WX_GL_SAMPLE_BUFFERS, GL_TRUE, WX_GL_SAMPLES, 4, 0 }; int attribList[] = {
WX_GL_RGBA,
WX_GL_DOUBLEBUFFER,
// RGB channels each should be allocated with 8 bit depth. One should almost certainly get these bit depths by default.
WX_GL_MIN_RED, 8,
WX_GL_MIN_GREEN, 8,
WX_GL_MIN_BLUE, 8,
// Requesting an 8 bit alpha channel. Interestingly, the NVIDIA drivers would most likely work with some alpha plane, but glReadPixels would not return
// the alpha channel on NVIDIA if not requested when the GL context is created.
WX_GL_MIN_ALPHA, 0,
WX_GL_DEPTH_SIZE, 24,
WX_GL_SAMPLE_BUFFERS, GL_TRUE,
WX_GL_SAMPLES, 4,
0
};
if (s_multisample == MS_Unknown) if (s_multisample == MS_Unknown)
{ {