114 lines
3.5 KiB
GLSL
114 lines
3.5 KiB
GLSL
/******************************************************************************************************
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* Derived from Canvas (https://github.com/grondag/canvas) material_main shader, Apache 2.0 license. *
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* Modified to add PBR varyings and support for texture-based bump map generation. *
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* The modifications are licensed under the GNU Lesser General Public License version 3. *
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******************************************************************************************************/
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#include canvas:shaders/internal/header.glsl
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#include canvas:shaders/internal/varying.glsl
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#include canvas:shaders/internal/vertex.glsl
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#include canvas:shaders/internal/flags.glsl
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#include canvas:shaders/internal/diffuse.glsl
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#include canvas:shaders/internal/program.glsl
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#include frex:shaders/api/context.glsl
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#include frex:shaders/api/vertex.glsl
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#include frex:shaders/api/sampler.glsl
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#include respackopts:config_supplier
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#include lumi:shaders/api/context_bump.glsl
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#include lumi:shaders/internal/varying.glsl
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#include lumi:shaders/internal/main_vert.glsl
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#include canvas:apitarget
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/******************************************************
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canvas:shaders/internal/material_main.vert
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******************************************************/
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void _cv_startVertex(inout frx_VertexData data, in int cv_programId) {
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#include canvas:startvertex
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}
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void _cv_endVertex(inout frx_VertexData data, in int cv_programId) {
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#include canvas:endvertex
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}
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void main() {
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frx_VertexData data = frx_VertexData(
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gl_Vertex,
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in_uv,
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in_color,
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(in_normal_flags.xyz - 127.0) / 127.0,
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in_lightmap.rg * 0.00390625 + 0.03125
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);
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// Adding +0.5 prevents striping or other strangeness in flag-dependent rendering
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// due to FP error on some cards/drivers. Also made varying attribute invariant (rolls eyes at OpenGL)
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_cvv_flags = uint(in_normal_flags.w + 0.5);
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// pbrv_roughness = 1.0;
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// pbrv_metallic = 0.0;
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_cv_setupProgram();
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#ifdef LUMI_BUMP
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startBump();
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#endif
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int cv_programId = _cv_vertexProgramId();
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_cv_startVertex(data, cv_programId);
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#ifdef LUMI_BUMP
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setupBump(data);
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#endif
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if (_cvu_atlas[_CV_SPRITE_INFO_TEXTURE_SIZE] != 0.0) {
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float spriteIndex = in_material.x;
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// for sprite atlas textures, convert from normalized (0-1) to interpolated coordinates
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vec4 spriteBounds = texture2DLod(frxs_spriteInfo, vec2(0, spriteIndex / _cvu_atlas[_CV_SPRITE_INFO_TEXTURE_SIZE]), 0);
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float atlasHeight = _cvu_atlas[_CV_ATLAS_HEIGHT];
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float atlasWidth = _cvu_atlas[_CV_ATLAS_WIDTH];
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// snap sprite bounds to integer coordinates to correct for floating point error
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spriteBounds *= vec4(atlasWidth, atlasHeight, atlasWidth, atlasHeight);
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spriteBounds += vec4(0.5, 0.5, 0.5, 0.5);
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spriteBounds -= fract(spriteBounds);
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spriteBounds /= vec4(atlasWidth, atlasHeight, atlasWidth, atlasHeight);
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data.spriteUV = spriteBounds.xy + data.spriteUV * spriteBounds.zw;
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#ifdef LUMI_BUMP
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endBump(spriteBounds);
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#endif
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}
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data.spriteUV = _cv_textureCoord(data.spriteUV, 0);
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vec4 viewCoord = gl_ModelViewMatrix * data.vertex;
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gl_ClipVertex = viewCoord;
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gl_FogFragCoord = length(viewCoord.xyz);
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setVaryings(viewCoord);
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//data.normal *= gl_NormalMatrix;
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data.vertex = gl_ModelViewProjectionMatrix * data.vertex;
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gl_Position = data.vertex;
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_cv_endVertex(data, cv_programId);
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_cvv_texcoord = data.spriteUV;
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_cvv_color = data.color;
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_cvv_normal = data.normal;
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#if DIFFUSE_SHADING_MODE != DIFFUSE_MODE_NONE
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_cvv_diffuse = _cv_diffuse(_cvv_normal);
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#endif
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#if AO_SHADING_MODE != AO_MODE_NONE
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_cvv_ao = in_lightmap.b / 255.0;
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#endif
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_cvv_lightcoord = data.light;
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}
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