From: Chris Forbes <[email protected]> This variant has a pair of (attributeless) output control points, which is the very simplest case for i965's SIMD4x2 dispatch of the control shader. This test passing but patch-single-vert failing indicates a problem with the 'last unpaired invocation' logic.
v2: fixed by Marek Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Marek Olšák <[email protected]> --- .../execution/patch-pair-verts.shader_test | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 tests/spec/arb_tessellation_shader/execution/patch-pair-verts.shader_test diff --git a/tests/spec/arb_tessellation_shader/execution/patch-pair-verts.shader_test b/tests/spec/arb_tessellation_shader/execution/patch-pair-verts.shader_test new file mode 100644 index 0000000..54d4fa9 --- /dev/null +++ b/tests/spec/arb_tessellation_shader/execution/patch-pair-verts.shader_test @@ -0,0 +1,50 @@ +# Test a very simple set of tess shaders which +# do not require per-vertex data. We have a pair +# of invocations, which is the easiest case for i965. + +[require] +GLSL >= 1.50 +GL_ARB_tessellation_shader + +[vertex shader passthrough] + +[tessellation control shader] +#version 150 +#extension GL_ARB_tessellation_shader : require + +layout(vertices = 2) out; + +void main() +{ + gl_TessLevelInner[0] = 1.0; + gl_TessLevelInner[1] = 1.0; + + gl_TessLevelOuter[0] = 1.0; + gl_TessLevelOuter[1] = 1.0; + gl_TessLevelOuter[2] = 1.0; + gl_TessLevelOuter[3] = 1.0; +} + +[tessellation evaluation shader] +#version 150 +#extension GL_ARB_tessellation_shader : require + +layout(quads, equal_spacing) in; + +void main() +{ + gl_Position = vec4(gl_TessCoord.xy * 2 - 1, 0, 1); +} + +[fragment shader] +#version 150 + +void main() +{ + gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0); +} + +[test] +patch parameter vertices 1 +draw arrays GL_PATCHES 0 1 +probe all rgba 0.0 1.0 0.0 1.0 -- 2.1.4 _______________________________________________ Piglit mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/piglit
