| // Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Adapted from the javascript implementation upon WebGL by kwaters@. |
| |
| #ifndef SHADERSRC_H_INCLUDED |
| #define SHADERSRC_H_INCLUDED |
| |
| static const char *sFlatVertexSource = |
| "attribute highp vec3 pos;\n" |
| "attribute lowp vec4 colorIn;\n" |
| "uniform highp mat4 mvp;\n" |
| "varying lowp vec4 color;\n" |
| "void main() {\n" |
| " color = colorIn;\n" |
| " gl_Position = mvp * vec4(pos.xyz, 1.);\n" |
| "}\n"; |
| |
| static const char *sFlatFragmentSource = |
| "varying lowp vec4 color;\n" |
| "void main() {\n" |
| " gl_FragColor = vec4(color.rgb, 1.0);\n" |
| "}\n"; |
| |
| static const char *sLitVertexSource = |
| "attribute highp vec3 pos;\n" |
| "attribute highp vec3 normal;\n" |
| "attribute lowp vec4 colorIn;\n" |
| "\n" |
| "varying lowp vec4 color;\n" |
| "\n" |
| "uniform highp mat4 mvp;\n" |
| "uniform highp mat3 normalMatrix;\n" |
| "uniform lowp vec4 ambient;\n" |
| "uniform lowp float shininess;\n" |
| "uniform lowp vec3 light_0_direction;\n" |
| "uniform lowp vec4 light_0_diffuse;\n" |
| "uniform lowp vec4 light_0_specular;\n" |
| "uniform lowp vec3 light_1_direction;\n" |
| "uniform lowp vec4 light_1_diffuse;\n" |
| "uniform lowp vec3 light_2_direction;\n" |
| "uniform lowp vec4 light_2_diffuse;\n" |
| "\n" |
| "highp vec3 worldNormal;\n" |
| "\n" |
| "lowp vec4 SpecularLight(highp vec3 direction,\n" |
| " lowp vec4 diffuseColor,\n" |
| " lowp vec4 specularColor) {\n" |
| " lowp vec3 lightDir = normalize(direction);\n" |
| " lowp float diffuse = max(0., dot(worldNormal, lightDir));\n" |
| " lowp float specular = 0.;\n" |
| " if (diffuse > 0.) {\n" |
| " highp vec3 halfv = normalize(lightDir + vec3(0., 0., 1.));\n" |
| " specular = pow(max(0., dot(halfv, worldNormal)), shininess);\n" |
| " }\n" |
| " return diffuse * diffuseColor * colorIn + specular * specularColor;\n" |
| "}\n" |
| "\n" |
| "lowp vec4 DiffuseLight(highp vec3 direction, lowp vec4 diffuseColor) {\n" |
| " highp vec3 lightDir = normalize(direction);\n" |
| " lowp float diffuse = max(0., dot(worldNormal, lightDir));\n" |
| " return diffuse * diffuseColor * colorIn;\n" |
| "}\n" |
| "\n" |
| "void main() {\n" |
| " worldNormal = normalize(normalMatrix * normal);\n" |
| "\n" |
| " gl_Position = mvp * vec4(pos, 1.);\n" |
| "\n" |
| " color = ambient * colorIn;\n" |
| " color += SpecularLight(light_0_direction, light_0_diffuse,\n" |
| " light_0_specular);\n" |
| " color += DiffuseLight(light_1_direction, light_1_diffuse);\n" |
| " color += DiffuseLight(light_2_direction, light_2_diffuse);\n" |
| "}\n"; |
| |
| static const char *sFadeVertexSource = |
| "attribute highp vec2 pos;\n" |
| "\n" |
| "varying lowp vec4 color;\n" |
| "\n" |
| "uniform lowp float minFade;\n" |
| "\n" |
| "void main() {\n" |
| " color = vec4(minFade, minFade, minFade, 1.);\n" |
| " gl_Position = vec4(pos, 0., 1.);\n" |
| "}\n"; |
| |
| #endif // SHADERSRC_H_INCLUDED |
| |
