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better workaround for Intel GPU crash for glDrawBuffer on Linux

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fix a linux build issue
This commit is contained in:
Erwin Coumans
2014-06-27 17:18:25 -07:00
parent 771a2e0bcb
commit 063a0344ac
3 changed files with 20 additions and 4 deletions
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15
btgui/OpenGLWindow/GLRenderToTexture.cpp
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@@ -1,6 +1,8 @@
///See http://www.opengl-tutorial.org/intermediate-tutorials/tutorial-14-render-to-texture/
bool gIntelLinuxglDrawBufferWorkaround=false;
#include "GLRenderToTexture.h"
#include "Bullet3Common/b3Scalar.h" // for b3Assert
GLRenderToTexture::GLRenderToTexture()
@@ -66,9 +68,16 @@ bool GLRenderToTexture::enable()
}
case RENDERTEXTURE_DEPTH:
{
GLenum drawBuffers[2] = { GL_COLOR_ATTACHMENT0, 0 };// GL_DEPTH_ATTACHMENT, 0};
glDrawBuffers(1, drawBuffers);
// glDrawBuffer(GL_NONE);
//Intel OpenGL driver crashes when using GL_NONE for glDrawBuffer on Linux, so use a workaround
if (gIntelLinuxglDrawBufferWorkaround)
{
GLenum drawBuffers[2] = { GL_DEPTH_ATTACHMENT,0};
glDrawBuffers(1, drawBuffers);
} else
{
glDrawBuffer(GL_NONE);
}
break;
}
default: