diff options
Diffstat (limited to 'src/datavis3d/engine/shaders/fragmentShader')
-rw-r--r-- | src/datavis3d/engine/shaders/fragmentShader | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/datavis3d/engine/shaders/fragmentShader b/src/datavis3d/engine/shaders/fragmentShader new file mode 100644 index 00000000..5bf9c654 --- /dev/null +++ b/src/datavis3d/engine/shaders/fragmentShader @@ -0,0 +1,36 @@ +#version 120 + +varying highp vec2 UV; +varying highp vec2 coords_mdl; +varying highp vec3 position_wrld; +varying highp vec3 normal_cmr; +varying highp vec3 eyeDirection_cmr; +varying highp vec3 lightDirection_cmr; + +uniform highp vec3 lightPosition_wrld; +uniform highp vec3 color_mdl; +uniform highp float lightStrength; +uniform highp float ambientStrength; + +void main() { + highp vec3 materialDiffuseColor = color_mdl.rgb; + highp vec3 materialAmbientColor = vec3(ambientStrength, ambientStrength, ambientStrength) * materialDiffuseColor; + highp vec3 materialSpecularColor = vec3(1.0, 1.0, 1.0); + + highp float distance = length(lightPosition_wrld - position_wrld); + + highp vec3 n = normalize(normal_cmr); + highp vec3 l = normalize(lightDirection_cmr); + highp float cosTheta = clamp(dot(n, l), 0.0, 1.0); + + highp vec3 E = normalize(eyeDirection_cmr); + highp vec3 R = reflect(-l, n); + highp float cosAlpha = clamp(dot(E, R), 0.0, 1.0); + + gl_FragColor.rgb = + materialAmbientColor + + materialDiffuseColor * lightStrength * pow(cosTheta, 2) / distance + + materialSpecularColor * lightStrength * pow(cosAlpha, 10) / distance; + gl_FragColor.a = 1.0; +} + |