Add ToT WebGL conformance tests : part 9

conformance/ogles/GL/mat/const_mat3_vert.vert

+
+/*
+** Copyright (c) 2012 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+
+attribute vec4 gtf_Vertex;
+uniform mat4 gtf_ModelViewProjectionMatrix;
+varying vec4 color;
+
+#define ERROR_EPSILON 0.1
+
+void main (void)
+{
+        float x;
+        // Declare a constant 3 by 3 matrix with unique elements.
+        const mat3 a = mat3( 1.0,   2.0,   4.0,   // 1.0  8.0  64.0
+                             8.0,  16.0,  32.0,   // 2.0 16.0 128.0
+                            64.0, 128.0, 256.0);  // 4.0 32.0 256.0
+
+        // Check each element.
+        bool elms = true;
+        if(a[0][0] !=   1.0) elms = false;
+        if(a[0][1] !=   2.0) elms = false;
+        if(a[0][2] !=   4.0) elms = false;
+        if(a[1][0] !=   8.0) elms = false;
+        if(a[1][1] !=  16.0) elms = false;
+        if(a[1][2] !=  32.0) elms = false;
+        if(a[2][0] !=  64.0) elms = false;
+        if(a[2][1] != 128.0) elms = false;
+        if(a[2][2] != 256.0) elms = false;
+
+        // Add up each row.
+        bool rows = true;
+        x = a[0][0] + a[1][0] + a[2][0];
+        if( x < 73.0-ERROR_EPSILON || x > 73.0+ERROR_EPSILON ) rows = false;
+        x = a[0][1] + a[1][1] + a[2][1]; 
+        if(x < 146.0-ERROR_EPSILON || x > 146.0+ERROR_EPSILON ) rows = false;
+        x = a[0][2] + a[1][2] + a[2][2];
+        if(x < 292.0-ERROR_EPSILON || x > 292.0+ERROR_EPSILON ) rows = false;
+
+        // Add up each column.
+        bool cols = true;
+        x = a[0][0] + a[0][1] + a[0][2];
+        if( x < 7.0-ERROR_EPSILON || x > 7.0+ERROR_EPSILON ) cols = false;
+        x = a[1][0] + a[1][1] + a[1][2];
+        if(x < 56.0-ERROR_EPSILON || x > 56.0+ERROR_EPSILON) cols = false;
+        x = a[2][0] + a[2][1] + a[2][2];
+        if(x < 448.0-ERROR_EPSILON || x > 448.0+ERROR_EPSILON) cols = false;
+
+        // Check if all of the operations were successful.
+        float gray = elms && rows && cols ? 1.0 : 0.0;
+
+        // Assign the varying variable color.
+        color = vec4(gray, gray, gray, 1.0);
+
+        // Transform the vertex position.
+        gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
+}
+