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author | Timothy Arceri <tarceri@itsqueeze.com> | 2018-12-07 14:03:38 +1100 |
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committer | Timothy Arceri <tarceri@itsqueeze.com> | 2018-12-18 10:35:38 +1100 |
commit | d13fe9b7431c9efaf6a799c4cd6d13dc2ba1e343 (patch) | |
tree | 2768e34d7c276172c7e6665ef75d4bc154e80115 | |
parent | bfb83e09f0e9cc36459cd505ee9eae3099ad1b1d (diff) |
glsl-1.10: test unrolling of loop where max iteration count guessed
This tests unrolling of a loop with a single exit point where the
exact trip count is unknown, but the max iteration count can be
guessed using the size of an array indexed via the induction
variable.
-rw-r--r-- | tests/spec/glsl-1.10/execution/vs-loop-array-index-unroll.shader_test | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/tests/spec/glsl-1.10/execution/vs-loop-array-index-unroll.shader_test b/tests/spec/glsl-1.10/execution/vs-loop-array-index-unroll.shader_test new file mode 100644 index 000000000..f123ab664 --- /dev/null +++ b/tests/spec/glsl-1.10/execution/vs-loop-array-index-unroll.shader_test @@ -0,0 +1,58 @@ +# This tests unrolling of a loop with a single exit point where the exact trip +# count is unknown, but the max iteration count can be guessed using the size +# of an array indexed via the induction variable. +# +# Here we test all possible (defined) outcomes for the loop. +[require] +GLSL >= 1.10 + +[vertex shader] +uniform int loop_count; + +void main() +{ + vec4 colour_array[4]; + + colour_array[0] = vec4(0.0, 0.25, 0.0, 1.0); + colour_array[1] = vec4(0.0, 0.5, 0.0, 1.0); + colour_array[2] = vec4(0.0, 0.75, 0.0, 1.0); + colour_array[3] = vec4(0.0, 1.0, 0.0, 1.0); + + gl_Position = gl_Vertex; + + vec4 colour = vec4(1.0, 1.0, 1.0, 1.0); + for (int i = 0; i < loop_count; i++) { + colour = colour_array[i]; + } + + gl_FrontColor = colour; +} + +[fragment shader] +void main() +{ + gl_FragColor = gl_Color; +} + +[test] +clear color 0.5 0.5 0.5 0.5 + +uniform int loop_count 0 +draw rect -1 -1 2 2 +probe all rgba 1.0 1.0 1.0 1.0 + +uniform int loop_count 1 +draw rect -1 -1 2 2 +probe all rgba 0.0 0.25 0.0 1.0 + +uniform int loop_count 2 +draw rect -1 -1 2 2 +probe all rgba 0.0 0.5 0.0 1.0 + +uniform int loop_count 3 +draw rect -1 -1 2 2 +probe all rgba 0.0 0.75 0.0 1.0 + +uniform int loop_count 4 +draw rect -1 -1 2 2 +probe all rgba 0.0 1.0 0.0 1.0 |