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      1 /*
      2  * Copyright (C) 2012 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 #ifndef _VERTEX_H_
     17 #define _VERTEX_H_
     18 
     19 static const char attach_shader_successful_complile_vertex[] =
     20     "#ifdef GL_ES \n"
     21     "precision mediump float;\n"
     22     "#endif\n"
     23     "uniform float    mortarThickness;\n"
     24     "uniform vec3    brickColor;\n"
     25     "uniform vec3    mortarColor;\n"
     26     " \n"
     27     "uniform float    brickMortarWidth;\n"
     28     "uniform float    brickMortarHeight;\n"
     29     "uniform float    mwf; \n"
     30     "uniform float    mhf; \n"
     31     ""
     32     "varying vec3  Position; \n"
     33     "varying float lightIntensity; \n"
     34     " \n"
     35     "void main (void) \n"
     36     "{\n"
     37     "    vec3    ct; \n"
     38     "    float    ss, tt, w, h; \n"
     39     " \n"
     40     "    vec3 pos = Position; \n"
     41     ""
     42     "    ss = pos.x / brickMortarWidth; \n"
     43     "    tt = pos.z / brickMortarHeight; \n"
     44     ""
     45     "    if (fract (tt * 0.5) > 0.5) \n"
     46     "        ss += 0.5; \n"
     47     ""
     48     "    ss = fract (ss); \n"
     49     "    tt = fract (tt); \n"
     50 
     51     "    w = step (mwf, ss) - step (1.0 - mwf, ss); \n"
     52     "    h = step (mhf, tt) - step (1.0 - mhf, tt); \n"
     53     ""
     54     "    ct = clamp(mix (mortarColor, brickColor, w * h) * lightIntensity, 0.0, 1.0); \n"
     55     ""
     56     "    gl_FragColor = vec4 (ct, 1.0); \n"
     57     "} \n";
     58 
     59 static const char color_one_vertex_shader_one[] =
     60         "attribute vec4 vPosition;    \n"
     61         "attribute vec4 vColor;       \n"
     62         "varying vec4 varyColor;      \n"
     63         "void main()                  \n"
     64         "{                            \n"
     65         "   gl_Position = vPosition;  \n"
     66         "   varyColor = vColor;       \n"
     67         "}                            \n";
     68 
     69 static const char color_one_vertex_shader[] =
     70         "attribute vec4 vPosition;    \n"
     71         "void main()                  \n"
     72         "{                            \n"
     73         "   gl_Position = vPosition;  \n"
     74         "}                            \n";
     75 
     76 #endif
     77