Jordan Justen <[email protected]> writes: > Signed-off-by: Jordan Justen <[email protected]> > Cc: Francisco Jerez <[email protected]> > --- > Francisco, > > I was looking at your image-load-store branch. I noticed using > imageStore directly from a uniform results in: > > brw_ir_svec4.h:94: brw::array_reg<R> brw::half(const brw::array_reg<R>&, > unsigned int) [with R = fs_reg]: Assertion `reg_width(storage(reg)) == 16' > failed.
Thanks, this looks useful to me, Reviewed-by: Francisco Jerez <[email protected]> For a fix you need something like this BTW: http://lists.freedesktop.org/archives/mesa-dev/2014-December/071872.html I've just back-ported it to my image-load-store branch. > > -Jordan > > .../basic-imageStore-from-uniform.shader_test | 56 > ++++++++++++++++++++++ > 1 file changed, 56 insertions(+) > create mode 100644 > tests/spec/arb_shader_image_load_store/execution/basic-imageStore-from-uniform.shader_test > > diff --git > a/tests/spec/arb_shader_image_load_store/execution/basic-imageStore-from-uniform.shader_test > > b/tests/spec/arb_shader_image_load_store/execution/basic-imageStore-from-uniform.shader_test > new file mode 100644 > index 0000000..802eda0 > --- /dev/null > +++ > b/tests/spec/arb_shader_image_load_store/execution/basic-imageStore-from-uniform.shader_test > @@ -0,0 +1,56 @@ > +# Verify simple reading of a uniform and output to an image > + > +[require] > +GL >= 3.3 > +GLSL >= 3.30 > +GL_ARB_shader_image_load_store > + > +[vertex shader] > +#version 130 > +in vec4 piglit_vertex; > + > +void main() > +{ > + gl_Position = piglit_vertex; > +} > + > +[fragment shader] > +#version 330 > +#extension GL_ARB_shader_image_load_store: enable > + > +uniform vec4 color; > +writeonly uniform image2D tex; > +out vec4 outcolor; > + > +void main() > +{ > + imageStore(tex, ivec2(gl_FragCoord.xy), color); > + outcolor = vec4(0.0, 0.0, 0.0, 1.0); > +} > + > +[test] > +# Texture 0 is the imageStore output. > +uniform int tex 0 > +texture rgbw 0 (16, 16) > +image texture 0 > + > +# Texture 1 is the rendering output. We don't care about this. > +texture rgbw 1 (16, 16) > + > +# Store red using imageStore > +uniform vec4 color 1.0 0.0 0.0 1.0 > +fb tex 2d 1 > +draw rect -1 -1 2 2 > + > +# Test the result of imageStore > +fb tex 2d 0 > +probe all rgba 1.0 0.0 0.0 1.0 > + > +# Store green using imageStore > +uniform vec4 color 0.0 1.0 0.0 1.0 > +fb tex 2d 1 > +draw rect -1 -1 2 2 > + > +# Test the result of imageStore > +fb tex 2d 0 > +probe all rgba 0.0 1.0 0.0 1.0 > -- > 2.1.1
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