diff options
Diffstat (limited to 'tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-array-mat3-col-row-rd.shader_test')
-rw-r--r-- | tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-array-mat3-col-row-rd.shader_test | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-array-mat3-col-row-rd.shader_test b/tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-array-mat3-col-row-rd.shader_test new file mode 100644 index 000000000..1b2ea2789 --- /dev/null +++ b/tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-array-mat3-col-row-rd.shader_test @@ -0,0 +1,106 @@ +# Test generated by: +# ../../../glsl-1.10/variable-index-read.sh 1.10 + +[require] +GLSL >= 1.10 + +[vertex shader] +#version 110 +uniform int col; +uniform int row; +uniform float expect; +varying mat3 m[3]; +varying vec4 color; + +void main() +{ + gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; + + m[0] = mat3(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0); + m[1] = mat3(10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0); + m[2] = mat3(19.0, 20.0, 21.0, 22.0, 23.0, 24.0, 25.0, 26.0, 27.0); + + /* From page 23 (page 30 of the PDF) of the GLSL 1.10 spec: + * + * "A vertex shader may also read varying variables, getting back the + * same values it has written. Reading a varying variable in a vertex + * shader returns undefined values if it is read before being + * written." + */ + color = (m[1][col][row] == expect) + ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0); +} + +[fragment shader] +#version 110 +uniform int col; +uniform int row; +uniform float expect; +varying mat3 m[3]; +varying vec4 color; + +void main() +{ + /* There is some trickery here. The fragment shader has to actually use + * the varyings generated by the vertex shader, or the compiler (more + * likely the linker) might demote the varying outputs to just be vertex + * shader global variables. Since the point of the test is the vertex + * shader reading from a varying, that would defeat the test. + */ + gl_FragColor = (m[1][col][row] == expect) + ? color : vec4(1.0, 0.0, 0.0, 1.0); +} + +[test] +clear color 0.5 0.5 0.5 0.5 +clear +ortho + +uniform int col 0 +uniform int row 0 +uniform float expect 10 +draw rect 60 5 10 10 +probe rgb 65 10 0.0 1.0 0.0 + +uniform int row 1 +uniform float expect 11 +draw rect 60 20 10 10 +probe rgb 65 25 0.0 1.0 0.0 + +uniform int row 2 +uniform float expect 12 +draw rect 60 35 10 10 +probe rgb 65 40 0.0 1.0 0.0 + +uniform int col 1 +uniform int row 0 +uniform float expect 13 +draw rect 75 5 10 10 +probe rgb 80 10 0.0 1.0 0.0 + +uniform int row 1 +uniform float expect 14 +draw rect 75 20 10 10 +probe rgb 80 25 0.0 1.0 0.0 + +uniform int row 2 +uniform float expect 15 +draw rect 75 35 10 10 +probe rgb 80 40 0.0 1.0 0.0 + +uniform int col 2 +uniform int row 0 +uniform float expect 16 +draw rect 90 5 10 10 +probe rgb 95 10 0.0 1.0 0.0 + +uniform int row 1 +uniform float expect 17 +draw rect 90 20 10 10 +probe rgb 95 25 0.0 1.0 0.0 + +uniform int row 2 +uniform float expect 18 +draw rect 90 35 10 10 +probe rgb 95 40 0.0 1.0 0.0 + |