72 lines
2.4 KiB
GLSL
72 lines
2.4 KiB
GLSL
layout(location = 1) in vec2 f_uv;
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layout(location = 2) in vec2 f_uv_two;
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layout(location = 3) flat in int f_material_id;
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layout(location = 5) in vec3 f_normal;
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layout(location = 8) in vec4 f_world_position;
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layout(location = 0) out vec4 o_color;
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layout(location = 1) out vec4 o_normal;
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#include "utils/sample_mesh_texture.glsl"
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#include "utils/handle_pbr.glsl"
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#include "../utils/encode_normal.frag"
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#define HIGH_RES_SAMPLER 1.0f
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#define LOW_RES_SAMPLER 0.5f
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#ifdef PBR_ENABLED
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vec4 sampleMultiResTextureLayer2(float factor, int material_id, vec2 uv)
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{
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return mix(sampleMeshTexture2(material_id, uv * HIGH_RES_SAMPLER), sampleMeshTexture2(material_id, uv * LOW_RES_SAMPLER), factor);
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}
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vec4 sampleMultiResTextureLayer3(float factor, int material_id, vec2 uv)
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{
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return mix(sampleMeshTexture3(material_id, uv * HIGH_RES_SAMPLER), sampleMeshTexture3(material_id, uv * LOW_RES_SAMPLER), factor);
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}
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vec4 sampleMultiResTextureLayer4(float factor, int material_id, vec2 uv)
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{
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return mix(sampleMeshTexture4(material_id, uv * HIGH_RES_SAMPLER), sampleMeshTexture4(material_id, uv * LOW_RES_SAMPLER), factor);
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}
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vec4 sampleMultiResTextureLayer5(float factor, int material_id, vec2 uv)
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{
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return mix(sampleMeshTexture5(material_id, uv * HIGH_RES_SAMPLER), sampleMeshTexture5(material_id, uv * LOW_RES_SAMPLER), factor);
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}
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#endif
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void main()
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{
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#ifdef PBR_ENABLED
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// mitigate repetitive patterns
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float cam_dist = length(u_camera.m_view_matrix * f_world_position);
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float mitigation = clamp(pow(cam_dist * 0.01, 2.0) - 0., 0., 1.);
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// Splatting part
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vec4 splatting = sampleMeshTexture1(f_material_id, f_uv_two);
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vec4 detail0 = sampleMultiResTextureLayer2(mitigation, f_material_id, f_uv);
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vec4 detail1 = sampleMultiResTextureLayer3(mitigation, f_material_id, f_uv);
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vec4 detail2 = sampleMultiResTextureLayer4(mitigation, f_material_id, f_uv);
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vec4 detail3 = sampleMultiResTextureLayer5(mitigation, f_material_id, f_uv);
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vec4 splatted = splatting.r * detail0 +
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splatting.g * detail1 +
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splatting.b * detail2 +
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max(0.0, (1.0 - splatting.r - splatting.g - splatting.b)) * detail3;
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vec3 normal = normalize(f_normal.xyz);
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if (u_deferred)
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{
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o_color = vec4(splatted.xyz, 0.0);
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o_normal.xy = EncodeNormal(normal);
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o_normal.zw = vec2(0.0);
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}
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else
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{
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o_color = vec4(handlePBR(splatted.xyz, vec3(0.0), f_world_position,
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normal), 1.0);
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}
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#endif
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}
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