228 lines
7.7 KiB
C
228 lines
7.7 KiB
C
#extension GL_EXT_samplerless_texture_functions : require
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#extension GL_EXT_nonuniform_qualifier : enable
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#define DEFERRED 1
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#define MAX_TEXTURES TEXTURES
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#include "../common/macros.h"
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layout (constant_id = 0) const uint TEXTURES = 512;
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layout (constant_id = 1) const uint CUBEMAPS = 128;
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#if VXGI
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layout (constant_id = 2) const uint CASCADES = 16;
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#endif
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#if !MULTISAMPLING
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layout (input_attachment_index = 0, binding = 0) uniform usubpassInput samplerId;
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layout (input_attachment_index = 1, binding = 1) uniform subpassInput samplerNormal;
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#if DEFERRED_SAMPLING
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layout (input_attachment_index = 2, binding = 2) uniform subpassInput samplerUv;
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#else
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layout (input_attachment_index = 2, binding = 2) uniform subpassInput samplerAlbedo;
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#endif
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layout (input_attachment_index = 3, binding = 3) uniform subpassInput samplerDepth;
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#else
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layout (input_attachment_index = 0, binding = 0) uniform usubpassInputMS samplerId;
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layout (input_attachment_index = 1, binding = 1) uniform subpassInputMS samplerNormal;
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#if DEFERRED_SAMPLING
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layout (input_attachment_index = 2, binding = 2) uniform subpassInputMS samplerUv;
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#else
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layout (input_attachment_index = 2, binding = 2) uniform subpassInputMS samplerAlbedo;
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#endif
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layout (input_attachment_index = 3, binding = 3) uniform subpassInputMS samplerDepth;
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#endif
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#include "../common/structs.h"
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layout (binding = 4) uniform UBO {
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EyeMatrices eyes[2];
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Mode mode;
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Fog fog;
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Vxgi vxgi;
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uint lights;
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uint materials;
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uint textures;
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uint drawCommands;
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vec3 ambient;
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float gamma;
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float exposure;
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uint msaa;
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uint shadowSamples;
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uint indexSkybox;
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} ubo;
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layout (std140, binding = 5) readonly buffer Lights {
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Light lights[];
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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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layout (std140, binding = 8) readonly buffer DrawCommands {
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DrawCommand drawCommands[];
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};
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layout (binding = 9) uniform sampler2D samplerTextures[TEXTURES];
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layout (binding = 10) uniform samplerCube samplerCubemaps[CUBEMAPS];
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layout (binding = 11) uniform sampler3D samplerNoise;
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#if VXGI
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layout (binding = 12) uniform usampler3D voxelId[CASCADES];
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layout (binding = 13) uniform sampler3D voxelNormal[CASCADES];
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layout (binding = 14) uniform sampler3D voxelRadiance[CASCADES];
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#endif
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layout (location = 0) in vec2 inUv;
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layout (location = 1) in flat uint inPushConstantPass;
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layout (location = 0) out vec4 outFragColor;
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#include "../common/functions.h"
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#include "../common/fog.h"
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#include "../common/pbr.h"
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#include "../common/shadows.h"
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#if VXGI
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#include "../common/vxgi.h"
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#endif
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void postProcess() {
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#if FOG
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fog( surface.ray, surface.fragment.rgb, surface.fragment.a );
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#endif
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#if TONE_MAP
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surface.fragment.rgb = vec3(1.0) - exp(-surface.fragment.rgb * ubo.exposure);
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#endif
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#if GAMMA_CORRECT
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surface.fragment.rgb = pow(surface.fragment.rgb, vec3(1.0 / ubo.gamma));
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#endif
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#if WHITENOISE
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if ( enabled(ubo.mode.type, 1) ) whitenoise(surface.fragment.rgb, ubo.mode.parameters);
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#endif
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outFragColor = vec4(surface.fragment.rgb,1);
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}
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void populateSurface() {
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surface.pass = inPushConstantPass;
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{
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#if !MULTISAMPLING
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const float depth = subpassLoad(samplerDepth).r;
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#else
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const float depth = resolve(samplerDepth, ubo.msaa).r;
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#endif
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vec4 positionEye = ubo.eyes[surface.pass].iProjection * vec4(inUv * 2.0 - 1.0, depth, 1.0);
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positionEye /= positionEye.w;
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surface.position.eye = positionEye.xyz;
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surface.position.world = vec3( ubo.eyes[surface.pass].iView * positionEye );
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}
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#if 0
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{
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const vec4 near4 = ubo.eyes[surface.pass].iProjectionView * (vec4(2.0 * inUv - 1.0, -1.0, 1.0));
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const vec4 far4 = ubo.eyes[surface.pass].iProjectionView * (vec4(2.0 * inUv - 1.0, 1.0, 1.0));
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const vec3 near3 = near4.xyz / near4.w;
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const vec3 far3 = far4.xyz / far4.w;
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surface.ray.origin = near3;
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surface.ray.direction = normalize( far3 - near3 );
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}
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// separate our ray direction due to floating point precision problems
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{
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const mat4 iProjectionView = inverse( ubo.eyes[surface.pass].projection * mat4(mat3(ubo.eyes[surface.pass].view)) );
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const vec4 near4 = iProjectionView * (vec4(2.0 * inUv - 1.0, -1.0, 1.0));
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const vec4 far4 = iProjectionView * (vec4(2.0 * inUv - 1.0, 1.0, 1.0));
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const vec3 near3 = near4.xyz / near4.w;
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const vec3 far3 = far4.xyz / far4.w;
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surface.ray.direction = normalize( far3 - near3 );
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}
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#else
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{
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const mat4 iProjectionView = inverse( ubo.eyes[surface.pass].projection * mat4(mat3(ubo.eyes[surface.pass].view)) );
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const vec4 near4 = iProjectionView * (vec4(2.0 * inUv - 1.0, -1.0, 1.0));
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const vec4 far4 = iProjectionView * (vec4(2.0 * inUv - 1.0, 1.0, 1.0));
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const vec3 near3 = near4.xyz / near4.w;
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const vec3 far3 = far4.xyz / far4.w;
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surface.ray.direction = normalize( far3 - near3 );
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surface.ray.origin = ubo.eyes[surface.pass].eyePos.xyz;
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}
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#endif
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#if !MULTISAMPLING
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surface.normal.world = decodeNormals( subpassLoad(samplerNormal).xy );
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const uvec2 ID = subpassLoad(samplerId).xy;
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#else
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surface.normal.world = decodeNormals( resolve(samplerNormal, ubo.msaa).xy );
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const uvec2 ID = subpassLoad(samplerId, 0).xy; //resolve(samplerId, ubo.msaa).xy;
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#endif
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surface.normal.eye = vec3( ubo.eyes[surface.pass].view * vec4(surface.normal.world, 0.0) );
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if ( ID.x == 0 || ID.y == 0 ) {
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surface.fragment.rgb = texture( samplerCubemaps[ubo.indexSkybox], surface.ray.direction ).rgb;
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surface.fragment.a = 0.0;
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postProcess();
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return;
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}
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const uint drawId = ID.x - 1;
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const DrawCommand drawCommand = drawCommands[drawId];
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surface.material.id = ID.y + drawCommand.materialID - 1;
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const Material material = materials[surface.material.id];
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surface.material.albedo = material.colorBase;
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surface.fragment = material.colorEmissive;
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#if DEFERRED_SAMPLING
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#if !MULTISAMPLING
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surface.uv = subpassLoad(samplerUv).xy;
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#else
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surface.uv = resolve(samplerUv, ubo.msaa).xy;
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#endif
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const float mip = mipLevel(inUv.xy);
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// if ( validTextureIndex( drawCommand.textureIndex, material.indexAlbedo ) ) {
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// surface.material.albedo = sampleTexture( drawCommand.textureIndex, drawCommand.textureSlot, material.indexAlbedo, material.indexAtlas, mip );
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if ( validTextureIndex( material.indexAlbedo ) ) {
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surface.material.albedo = sampleTexture( material.indexAlbedo, mip );
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}
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// OPAQUE
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if ( material.modeAlpha == 0 ) {
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surface.material.albedo.a = 1;
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// BLEND
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} else if ( material.modeAlpha == 1 ) {
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// MASK
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} else if ( material.modeAlpha == 2 ) {
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}
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// Emissive textures
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// if ( validTextureIndex( drawCommand.textureIndex, material.indexEmissive ) ) {
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// surface.fragment += sampleTexture( drawCommand.textureIndex, drawCommand.textureSlot, material.indexEmissive, material.indexAtlas, mip );
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if ( validTextureIndex( material.indexEmissive ) ) {
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surface.fragment += sampleTexture( material.indexEmissive, mip );
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}
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#else
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#if !MULTISAMPLING
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surface.material.albedo = subpassLoad(samplerAlbedo);
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#else
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surface.material.albedo = resolve(samplerAlbedo, ubo.msaa);
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#endif
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#endif
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surface.material.metallic = material.factorMetallic;
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surface.material.roughness = material.factorRoughness;
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surface.material.occlusion = material.factorOcclusion;
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surface.material.indexLightmap = material.indexLightmap;
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}
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void directLighting() {
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const vec3 ambient = ubo.ambient.rgb * surface.material.occlusion + surface.material.indirect.rgb;
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surface.fragment.rgb += (0 <= surface.material.indexLightmap) ? (surface.material.albedo.rgb + ambient) : (surface.material.albedo.rgb * ambient);
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#if PBR
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pbr();
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#elif LAMBERT
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lambert();
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#elif PHONG
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phong();
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#endif
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} |