On last llvm-svn and mesa git, glxgears show extension
GL_EXT_framebuffer_multisample. But unigine-tropics show black screen and have
error in console:

GLShader::loadFragment(): error in
"core/shaders/render/fragment_occlusion_blur.shader" file
defines:
UNKNOWN,QUALITY_LOW,QUALITY_MEDIUM,QUALITY_HIGH,MULTISAMPLE_0,USE_INSTANCING,USE_TEXTURE_ARRAY,USE_DEFERRED,USE_OCCLUSION,USE_REFLECTION,OPENGL,USE_PSEUDO_INSTANCING,USE_PSEUDO_TRANSFORM,USE_ARB_TEXTURE_MULTISAMPLE,HAS_ARB_DRAW_INSTANCED
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'
0:0(0): error: no matching function for call to `texelFetch2DOffset(sampler2D,
ivec2, int, ivec2)'

unigine-sanctuary just crash with single error:

LLVM ERROR: ran out of registers during register allocation

Do i mast create 2 bug report for each case?