Ayumiwii
241 lines
7.3 KiB
GLSL
241 lines
7.3 KiB
GLSL
#version 430
|
|
|
|
uniform mat4 M;
|
|
uniform mat4 V;
|
|
uniform mat4 P;
|
|
uniform vec4 Color;
|
|
uniform vec4 DiffuseColor;
|
|
uniform vec2 ScreenDimensions;
|
|
uniform vec4 FillColor;
|
|
uniform vec4 AmbientColor;
|
|
uniform float FillPercentage;
|
|
layout (binding = 0) uniform sampler2D DiffuseTexture;
|
|
layout (binding = 1) uniform sampler2D NormalMapTexture;
|
|
layout (binding = 2) uniform sampler2D SpecularMapTexture;
|
|
layout (binding = 3) uniform sampler2D GlowMapTexture;
|
|
layout (binding = 4) uniform sampler2D DepthMap;
|
|
|
|
#define TILE_SIZE 16
|
|
|
|
struct LightSource {
|
|
vec4 Position;
|
|
vec4 Direction;
|
|
vec4 Color;
|
|
float Radius;
|
|
float Intensity;
|
|
float Falloff;
|
|
int Type;
|
|
};
|
|
|
|
layout (std430, binding = 1) buffer LightBuffer
|
|
{
|
|
LightSource List[];
|
|
} LightSources;
|
|
|
|
struct LightGrid {
|
|
float Start;
|
|
float Amount;
|
|
vec2 Padding;
|
|
};
|
|
|
|
layout (std430, binding = 2) buffer LightGridBuffer
|
|
{
|
|
LightGrid Data[];
|
|
} LightGrids;
|
|
|
|
layout (std430, binding = 4) buffer LightIndexBuffer
|
|
{
|
|
float LightIndex[];
|
|
};
|
|
|
|
|
|
in VertexData{
|
|
vec3 Position;
|
|
vec3 Normal;
|
|
vec3 Tangent;
|
|
vec3 BiTangent;
|
|
vec2 TextureCoordinate;
|
|
vec4 ExplosionColor;
|
|
float ExplosionPercentageElapsed;
|
|
vec4 PositionLightSpace;
|
|
}Input;
|
|
|
|
out vec4 sceneColor;
|
|
out vec4 bloomColor;
|
|
|
|
struct LightResult {
|
|
vec4 Diffuse;
|
|
vec4 Specular;
|
|
};
|
|
|
|
float CalcAttenuation(float radius, float dist, float falloff) {
|
|
return 1.0 - smoothstep(radius * 0.3, radius, dist);
|
|
}
|
|
|
|
vec4 CalcSpecular(vec4 lightColor, vec4 viewVec, vec4 lightVec, vec4 normal) {
|
|
vec4 R = normalize( reflect(-lightVec, normal));
|
|
float RdotV = max( dot(R, viewVec), 0.0);
|
|
return lightColor * pow(RdotV, 90.0);
|
|
}
|
|
|
|
vec4 CalcDiffuse(vec4 lightColor, vec4 lightVec, vec4 normal) {
|
|
float power = max( dot(normal, lightVec), 0.0);
|
|
return lightColor * power;
|
|
}
|
|
|
|
LightResult CalcPointLightSource(vec4 lightPos, float lightRadius, vec4 lightColor, float intensity, vec4 viewVec, vec4 position, vec4 normal, float falloff)
|
|
{
|
|
vec4 L = lightPos - position;
|
|
float dist = length(L);
|
|
L = normalize(L);
|
|
|
|
float attenuation = CalcAttenuation(lightRadius, dist, falloff);
|
|
|
|
LightResult result;
|
|
result.Diffuse = CalcDiffuse(lightColor, L, normal) * attenuation * intensity;
|
|
result.Specular = CalcSpecular(lightColor, viewVec, L, normal) * attenuation * intensity;
|
|
return result;
|
|
}
|
|
|
|
LightResult CalcDirectionalLightSource(vec4 direction, vec4 color, float intensity, vec4 viewVec, vec4 vertNormal)
|
|
{
|
|
vec4 L = normalize( -vec4(direction.xyz, 0) );
|
|
|
|
LightResult result;
|
|
result.Diffuse = CalcDiffuse(color, L, vertNormal) * intensity;
|
|
result.Specular = CalcSpecular(color, viewVec, L, vertNormal) * intensity;
|
|
return result;
|
|
}
|
|
|
|
vec4 CalcNormalMappedValue(vec3 normal, vec3 tangent, vec3 bitangent, vec2 textureCoordinate, sampler2D normalMap)
|
|
{
|
|
mat3 TBN = mat3(tangent, bitangent, normal);
|
|
vec3 NormalMap = texture(normalMap, textureCoordinate).xyz * 2.0 - vec3(1.0);
|
|
return vec4(TBN * normalize(NormalMap), 0.0);
|
|
}
|
|
|
|
vec2 poissonDisk[4] = vec2[](
|
|
vec2( -0.94201624, -0.39906216 ),
|
|
vec2( 0.94558609, -0.76890725 ),
|
|
vec2( -0.094184101, -0.92938870 ),
|
|
vec2( 0.34495938, 0.29387760 )
|
|
);
|
|
|
|
float CalcShadowValue(vec4 positionLightSpace, vec4 normal, vec4 lightDir, sampler2D depthTexture)
|
|
{
|
|
|
|
float bias = max(0.05 * (1.0 - dot(normal, -lightDir)), 0.005);
|
|
// perform perspective divide
|
|
vec3 projCoords = positionLightSpace.xyz / positionLightSpace.w;
|
|
// Transform to [0,1] range
|
|
projCoords = projCoords * 0.5 + 0.5;
|
|
// Get closest depth value from light's perspective (using [0,1] range fragPosLight as coords)
|
|
//float lightDepth = texture(depthTexture, positionLightSpace.xy).r;
|
|
float closestDepth = texture(depthTexture, projCoords.xy).r;
|
|
// Get depth of current fragment from light's perspective
|
|
//float currentDepth = positionLightSpace.z;
|
|
float currentDepth = projCoords.z;
|
|
// Check whether current frag pos is in shadow
|
|
//float shadow = currentDepth - bias > closestDepth ? 1.0 : 0.0;
|
|
// float shadow = currentDepth > closestDepth ? 1.0 : 0.0;
|
|
|
|
float shadow = 0.0;
|
|
//soft shadow - using percentage-closer filtering (PCF) is to simply sample the surrounding texels of the depth map and average the results:
|
|
vec2 texelSize = 1.0 / textureSize(depthTexture, 0);
|
|
for(int x = -1; x <= 1; ++x)
|
|
{
|
|
for(int y = -1; y <= 1; ++y)
|
|
{
|
|
float pcfDepth = texture(depthTexture, projCoords.xy + vec2(x, y) * texelSize).r;
|
|
shadow += currentDepth - bias > pcfDepth ? 1.0 : 0.0;
|
|
}
|
|
}
|
|
shadow /= 9.0;
|
|
|
|
return shadow;
|
|
|
|
}
|
|
|
|
void main()
|
|
{
|
|
vec4 diffuseTexel = texture2D(DiffuseTexture, Input.TextureCoordinate);
|
|
vec4 glowTexel = texture2D(GlowMapTexture, Input.TextureCoordinate);
|
|
vec4 specularTexel = texture2D(SpecularMapTexture, Input.TextureCoordinate);
|
|
vec4 position = V * M * vec4(Input.Position, 1.0);
|
|
vec4 normal = V * CalcNormalMappedValue(Input.Normal, Input.Tangent, Input.BiTangent, Input.TextureCoordinate, NormalMapTexture);
|
|
normal = normalize(normal);
|
|
//vec4 normal = normalize(V * vec4(Input.Normal, 0.0));
|
|
vec4 viewVec = normalize(-position);
|
|
|
|
vec2 tilePos;
|
|
tilePos.x = int(gl_FragCoord.x/TILE_SIZE);
|
|
tilePos.y = int(gl_FragCoord.y/TILE_SIZE);
|
|
|
|
LightResult totalLighting;
|
|
totalLighting.Diffuse = vec4(AmbientColor.rgb, 1.0);
|
|
int currentTile = int(floor(gl_FragCoord.x/TILE_SIZE) + (floor(gl_FragCoord.y/TILE_SIZE) * int(ScreenDimensions.x/TILE_SIZE)));
|
|
|
|
int start = int(LightGrids.Data[currentTile].Start);
|
|
int amount = int(LightGrids.Data[currentTile].Amount);
|
|
|
|
float shadowFactor = 1.0;
|
|
|
|
for(int i = start; i < start + amount; i++) {
|
|
|
|
int l = int(LightIndex[i]);
|
|
LightSource light = LightSources.List[l];
|
|
|
|
LightResult light_result;
|
|
//These if statements should be removed.
|
|
if(light.Type == 1) { // point
|
|
light_result = CalcPointLightSource(V * light.Position, light.Radius, light.Color, light.Intensity, viewVec, position, normal, light.Falloff);
|
|
} else if (light.Type == 2) { //Directional
|
|
light_result = CalcDirectionalLightSource(V * light.Direction, light.Color, light.Intensity, viewVec, normal);
|
|
shadowFactor = CalcShadowValue(Input.PositionLightSpace, vec4(Input.Normal, 0.0), light.Direction, DepthMap);
|
|
}
|
|
|
|
totalLighting.Diffuse += light_result.Diffuse;
|
|
totalLighting.Specular += light_result.Specular;
|
|
}
|
|
|
|
totalLighting.Diffuse += (1.0 - shadowFactor);
|
|
totalLighting.Specular += (1.0 - shadowFactor);
|
|
//LightResult getInformation;
|
|
|
|
vec4 color_result = mix((Color * diffuseTexel * DiffuseColor), Input.ExplosionColor, Input.ExplosionPercentageElapsed);
|
|
color_result = color_result * (totalLighting.Diffuse + (totalLighting.Specular * specularTexel));
|
|
|
|
//color_result = (totalLighting.Diffuse + (1.0 - shadowFactor) * (getInformation.Diffuse + (getInformation.Specular * specularTexel))) * color_result;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//vec4 color_result = (DiffuseColor + Input.ExplosionColor) * (totalLighting.Diffuse + (totalLighting.Specular * specularTexel)) * diffuseTexel * Color;
|
|
|
|
|
|
float pos = ((P * vec4(Input.Position, 1)).y + 1.0)/2.0;
|
|
|
|
if(pos <= FillPercentage) {
|
|
color_result += FillColor;
|
|
}
|
|
sceneColor = vec4(color_result.xyz, clamp(color_result.a, 0, 1));
|
|
color_result += glowTexel*3;
|
|
|
|
bloomColor = vec4(clamp(color_result.xyz - 1.0, 0, 100), 1.0);
|
|
|
|
//Tiled Debug Code
|
|
/*
|
|
if(int(gl_FragCoord.x)%16 == 0 || int(gl_FragCoord.y)%16 == 0 ) {
|
|
sceneColor += vec4(0.5, 0, 0, 0);
|
|
} else {
|
|
sceneColor += vec4(LightGrids.Data[int(tilePos.x + tilePos.y*80)].Amount/LightSources.List.length(), 0, 0, 1);
|
|
}
|
|
*/
|
|
}
|
|
|
|
|