diff options
Diffstat (limited to 'tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-mat4-col-row-rd.shader_test')
-rw-r--r-- | tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-mat4-col-row-rd.shader_test | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-mat4-col-row-rd.shader_test b/tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-mat4-col-row-rd.shader_test new file mode 100644 index 000000000..1a50570b5 --- /dev/null +++ b/tests/spec/glsl-1.10/execution/variable-indexing/vs-varying-mat4-col-row-rd.shader_test @@ -0,0 +1,140 @@ +# 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 mat4 m; +varying vec4 color; + +void main() +{ + gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; + + m = mat4(1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0); + + /* 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[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 mat4 m; +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[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 1 +draw rect 5 5 10 10 +probe rgb 10 10 0.0 1.0 0.0 + +uniform int row 1 +uniform float expect 2 +draw rect 5 20 10 10 +probe rgb 10 25 0.0 1.0 0.0 + +uniform int row 2 +uniform float expect 3 +draw rect 5 35 10 10 +probe rgb 10 40 0.0 1.0 0.0 + +uniform int row 3 +uniform float expect 4 +draw rect 5 50 10 10 +probe rgb 10 55 0.0 1.0 0.0 + +uniform int col 1 +uniform int row 0 +uniform float expect 5 +draw rect 20 5 10 10 +probe rgb 25 10 0.0 1.0 0.0 + +uniform int row 1 +uniform float expect 6 +draw rect 20 20 10 10 +probe rgb 25 25 0.0 1.0 0.0 + +uniform int row 2 +uniform float expect 7 +draw rect 20 35 10 10 +probe rgb 25 40 0.0 1.0 0.0 + +uniform int row 3 +uniform float expect 8 +draw rect 20 50 10 10 +probe rgb 25 55 0.0 1.0 0.0 + +uniform int col 2 +uniform int row 0 +uniform float expect 9 +draw rect 35 5 10 10 +probe rgb 40 10 0.0 1.0 0.0 + +uniform int row 1 +uniform float expect 10 +draw rect 35 20 10 10 +probe rgb 40 25 0.0 1.0 0.0 + +uniform int row 2 +uniform float expect 11 +draw rect 35 35 10 10 +probe rgb 40 40 0.0 1.0 0.0 + +uniform int row 3 +uniform float expect 12 +draw rect 35 50 10 10 +probe rgb 40 55 0.0 1.0 0.0 + +uniform int col 3 +uniform int row 0 +uniform float expect 13 +draw rect 50 5 10 10 +probe rgb 55 10 0.0 1.0 0.0 + +uniform int row 1 +uniform float expect 14 +draw rect 50 20 10 10 +probe rgb 55 25 0.0 1.0 0.0 + +uniform int row 2 +uniform float expect 15 +draw rect 50 35 10 10 +probe rgb 55 40 0.0 1.0 0.0 + +uniform int row 3 +uniform float expect 16 +draw rect 50 50 10 10 +probe rgb 55 55 0.0 1.0 0.0 + |