85 lines
1.7 KiB
GLSL
85 lines
1.7 KiB
GLSL
//*PIXEL*
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#version 460
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#extension GL_ARB_bindless_texture : require
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const uint DIRECTIONAL_LIGHT = 1;
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const uint POINT_LIGHT = 2;
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const uint SPOT_LIGHT = 3;
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uint INVALID_HYDRA_ID = 4294967295;
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struct MaterialStore
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{
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vec4 diffuse_colour;
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vec4 matalic_rough;
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uint diffuse_texture_id;
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uint metallic_rough_texture_id;
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uint normal_texture_id;
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uint padding[1];
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};
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struct PointShadowMapSet
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{
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uint entity_id;
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uint shadow_id;
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uint shadow_texture_id;
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uint frame_buffer_id;
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float near_plane;
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float far_plane;
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uint padding[2];
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mat4 light_space_proj;
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mat4 light_space_view[6];
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};
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layout(std430, binding = 2) readonly buffer material_buffer
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{
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MaterialStore materials[1000];
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};
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layout(std430, binding = 3) readonly buffer texture_buffer
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{
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uvec2 textures[1000];
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};
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layout (std430, binding = 7) readonly buffer point_shadow_map_sets
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{
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PointShadowMapSet point_shadows[];
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};
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layout (location=0) in GEOM_OUT
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{
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vec2 vsUV;
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flat uint vsMaterialID;
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vec4 frag_pos;
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flat uint shad_idx;
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flat vec3 light_pos;
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}geom_out;
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layout (location=0) out vec4 output_colour;
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void main()
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{
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MaterialStore mat = materials[geom_out.vsMaterialID];
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vec4 diffuse_val = mat.diffuse_colour;
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if(mat.diffuse_texture_id != INVALID_HYDRA_ID)
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{
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uvec2 diffuse_handle = textures[mat.diffuse_texture_id];
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diffuse_val = diffuse_val * texture(sampler2D(diffuse_handle), geom_out.vsUV.xy);
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}
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if(diffuse_val[3] < 1.0)
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{
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discard;
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}
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float light_distance = length(geom_out.frag_pos.xyz - geom_out.light_pos);
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// map to [0;1] range by dividing by far_plane
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light_distance = light_distance / point_shadows[geom_out.shad_idx].far_plane;
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// write this as modified depth
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gl_FragDepth = light_distance;
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}
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