diff options
Diffstat (limited to 'tests/spec/glsl-es-1.00/execution/1.20/variable-indexing/vs-varying-mat2-col-rd.shader_test')
-rw-r--r-- | tests/spec/glsl-es-1.00/execution/1.20/variable-indexing/vs-varying-mat2-col-rd.shader_test | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/tests/spec/glsl-es-1.00/execution/1.20/variable-indexing/vs-varying-mat2-col-rd.shader_test b/tests/spec/glsl-es-1.00/execution/1.20/variable-indexing/vs-varying-mat2-col-rd.shader_test new file mode 100644 index 00000000..fa2b2707 --- /dev/null +++ b/tests/spec/glsl-es-1.00/execution/1.20/variable-indexing/vs-varying-mat2-col-rd.shader_test @@ -0,0 +1,61 @@ +# Test generated by: +# ../../../glsl-1.10/variable-index-read.sh 1.20 + +[require] +GLSL >= 1.20 + +[vertex shader] +uniform int col; +uniform vec2 expect; +varying mat2x2 m; +varying vec4 color; + +void main() +{ + gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; + + m = mat2x2(1.0, 2.0, 3.0, 4.0); + + /* 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] == expect) + ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0); +} + +[fragment shader] +uniform int col; +uniform vec2 expect; +varying mat2x2 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] == 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 vec2 expect 1 2 +draw rect 5 5 10 10 +probe rgb 10 10 0.0 1.0 0.0 + +uniform int col 1 +uniform vec2 expect 3 4 +draw rect 20 5 10 10 +probe rgb 25 10 0.0 1.0 0.0 |