115 lines
3.4 KiB
C
115 lines
3.4 KiB
C
//#extension GL_EXT_nonuniform_qualifier : enable
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#define CUBEMAPS 1
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#define FRAGMENT 1
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// #define MAX_TEXTURES TEXTURES
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#define MAX_TEXTURES textures.length()
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layout (constant_id = 0) const uint TEXTURES = 1;
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#include "../common/macros.h"
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#include "../common/structs.h"
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layout (binding = 4) uniform sampler2D samplerTextures[TEXTURES];
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layout (std140, binding = 5) readonly buffer Instances {
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Instance instances[];
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};
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layout (std140, binding = 6) readonly buffer Materials {
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Material materials[];
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};
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layout (std140, binding = 7) readonly buffer Textures {
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Texture textures[];
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};
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#include "../common/functions.h"
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layout (location = 0) in vec2 inUv;
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layout (location = 1) in vec2 inSt;
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layout (location = 2) in vec4 inColor;
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layout (location = 3) in vec3 inNormal;
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layout (location = 4) in mat3 inTBN;
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layout (location = 7) in vec3 inPosition;
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layout (location = 8) flat in uvec4 inId;
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layout (location = 0) out uvec2 outId;
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layout (location = 1) out vec2 outNormals;
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#if DEFERRED_SAMPLING
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layout (location = 2) out vec4 outUvs;
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#else
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layout (location = 2) out vec4 outAlbedo;
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#endif
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void main() {
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const uint drawID = uint(inId.x);
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const uint instanceID = uint(inId.y);
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const uint materialID = uint(inId.z);
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const float mip = mipLevel(inUv.xy);
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const vec2 uv = wrap(inUv.xy);
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const vec3 P = inPosition;
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surface.uv = uv;
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surface.st = inSt;
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vec3 N = inNormal;
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vec4 A = vec4(0, 0, 0, 0);
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#if DEFERRED_SAMPLING
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vec4 outAlbedo = vec4(0,0,0,0);
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#endif
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#if !DEFERRED_SAMPLING || CAN_DISCARD
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const Instance instance = instances[instanceID];
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const Material material = materials[materialID];
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float M = material.factorMetallic;
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float R = material.factorRoughness;
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float AO = material.factorOcclusion;
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// sample albedo
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if ( !validTextureIndex( material.indexAlbedo ) ) discard; {
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A = sampleTexture( material.indexAlbedo, mip );
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// alpha mode OPAQUE
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if ( material.modeAlpha == 0 ) {
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A.a = 1;
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// alpha mode BLEND
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} else if ( material.modeAlpha == 1 ) {
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// alpha mode MASK
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} else if ( material.modeAlpha == 2 ) {
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if ( A.a < abs(material.factorAlphaCutoff) ) discard;
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A.a = 1;
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}
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if ( A.a == 0 ) discard;
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}
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#if USE_LIGHTMAP && !DEFERRED_SAMPLING
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if ( validTextureIndex( instance.lightmapID ) ) {
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A.rgb *= sampleTexture( instance.lightmapID, inSt, mip ).rgb;
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}
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#endif
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#endif
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#if !DEFERRED_SAMPLING
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// sample normal
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if ( validTextureIndex( material.indexNormal ) ) {
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Texture t = textures[material.indexNormal];
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N = inTBN * normalize( sampleTexture( material.indexNormal, mip ).xyz * 2.0 - vec3(1.0));
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}
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#if 0
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// sample metallic/roughness
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if ( validTextureIndex( material.indexMetallicRoughness ) ) {
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Texture t = textures[material.indexMetallicRoughness];
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const vec4 sampled = textureLod( samplerTextures[nonuniformEXT((useAtlas)?textureAtlas.index:t.index)], ( useAtlas ) ? mix( t.lerp.xy, t.lerp.zw, uv ) : uv, mip );
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M = sampled.b;
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R = sampled.g;
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}
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// sample ao
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AO = material.factorOcclusion;
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if ( validTextureIndex( material.indexOcclusion ) ) {
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Texture t = textures[material.indexOcclusion];
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AO = textureLod( samplerTextures[nonuniformEXT((useAtlas)?textureAtlas.index:t.index)], ( useAtlas ) ? mix( t.lerp.xy, t.lerp.zw, uv ) : uv ).r;
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}
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#endif
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outAlbedo = A * inColor;
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#else
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outUvs.xy = surface.uv;
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outUvs.zw = surface.st;
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#endif
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outNormals = encodeNormals( N );
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outId = uvec2(drawID + 1, instanceID + 1);
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} |