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Fix missing Graphics light shader.

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This commit is contained in:
Ben Richards 2024-06-25 15:41:04 +12:00
parent 6ec1bed898
commit f6d71c32cc
2 changed files with 95 additions and 0 deletions
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42
src/renderer/webgl/shaders/FlatLight-frag.js Normal file
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module.exports = [
'#define SHADER_NAME PHASER_LIGHT_FS',
'precision mediump float;',
'struct Light',
'{',
' vec2 position;',
' vec3 color;',
' float intensity;',
' float radius;',
'};',
'const int kMaxLights = %LIGHT_COUNT%;',
'const vec3 normal = vec3(0.0, 0.0, 1.0);',
'uniform vec4 uCamera; /* x, y, rotation, zoom */',
'uniform vec2 uResolution;',
'uniform vec3 uAmbientLightColor;',
'uniform Light uLights[kMaxLights];',
'uniform int uLightCount;',
'varying vec4 outTint;',
'void main ()',
'{',
' vec3 finalColor = vec3(0.0, 0.0, 0.0);',
' vec4 color = outTint;',
' vec2 res = vec2(min(uResolution.x, uResolution.y)) * uCamera.w;',
' for (int index = 0; index < kMaxLights; ++index)',
' {',
' if (index < uLightCount)',
' {',
' Light light = uLights[index];',
' vec3 lightDir = vec3((light.position.xy / res) - (gl_FragCoord.xy / res), 0.1);',
' vec3 lightNormal = normalize(lightDir);',
' float distToSurf = length(lightDir) * uCamera.w;',
' float diffuseFactor = max(dot(normal, lightNormal), 0.0);',
' float radius = (light.radius / res.x * uCamera.w) * uCamera.w;',
' float attenuation = clamp(1.0 - distToSurf * distToSurf / (radius * radius), 0.0, 1.0);',
' vec3 diffuse = light.color * diffuseFactor;',
' finalColor += (attenuation * diffuse) * light.intensity;',
' }',
' }',
' vec4 colorOutput = vec4(uAmbientLightColor + finalColor, 1.0);',
' gl_FragColor = color * vec4(colorOutput.rgb * colorOutput.a, colorOutput.a);',
'}',
].join('\n');

53
src/renderer/webgl/shaders/src/FlatLight.frag Normal file
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#define SHADER_NAME PHASER_LIGHT_FS
precision mediump float;
struct Light
{
vec2 position;
vec3 color;
float intensity;
float radius;
};
const int kMaxLights = %LIGHT_COUNT%;
// Constant normal for flat lighting
const vec3 normal = vec3(0.0, 0.0, 1.0);
uniform vec4 uCamera; /* x, y, rotation, zoom */
uniform vec2 uResolution;
uniform vec3 uAmbientLightColor;
uniform Light uLights[kMaxLights];
uniform int uLightCount;
varying vec4 outTint;
void main ()
{
vec3 finalColor = vec3(0.0, 0.0, 0.0);
vec4 color = outTint;
vec2 res = vec2(min(uResolution.x, uResolution.y)) * uCamera.w;
for (int index = 0; index < kMaxLights; ++index)
{
if (index < uLightCount)
{
Light light = uLights[index];
vec3 lightDir = vec3((light.position.xy / res) - (gl_FragCoord.xy / res), 0.1);
vec3 lightNormal = normalize(lightDir);
float distToSurf = length(lightDir) * uCamera.w;
float diffuseFactor = max(dot(normal, lightNormal), 0.0);
float radius = (light.radius / res.x * uCamera.w) * uCamera.w;
float attenuation = clamp(1.0 - distToSurf * distToSurf / (radius * radius), 0.0, 1.0);
vec3 diffuse = light.color * diffuseFactor;
finalColor += (attenuation * diffuse) * light.intensity;
}
}
vec4 colorOutput = vec4(uAmbientLightColor + finalColor, 1.0);
gl_FragColor = color * vec4(colorOutput.rgb * colorOutput.a, colorOutput.a);
}