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2cd8202af3
PortableGL supports shaders, but requires them to be compiled ahead-of-time to C or C++. I'll write a compiler later to translate from GLSL to this format automatically at build time.
22 lines
1.1 KiB
C
22 lines
1.1 KiB
C
#include "transSimple.pgl.h"
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void mkxpTransSimpleVS(float *_output, pgl_vec4 *_attribs, Shader_Builtins *builtins, void *_uniforms)
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{
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struct TransSimpleVarying *output = (struct TransSimpleVarying *)_output;
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struct TransSimpleAttribs *attribs = (struct TransSimpleAttribs *)_attribs;
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struct TransSimpleUniforms *uniforms = (struct TransSimpleUniforms *)_uniforms;
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pgl_vec2 pos = add_vec2s(attribs->position, uniforms->translation);
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builtins->gl_Position = mult_mat4_vec4(uniforms->projMat, (pgl_vec4){pos.x, pos.y, 0, 1});
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output->v_texCoord = mult_vec2s(attribs->texCoord, uniforms->texSizeInv);
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}
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void mkxpTransSimpleFS(float *_input, Shader_Builtins *builtins, void *_uniforms)
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{
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struct TransSimpleVarying *input = (struct TransSimpleVarying *)_input;
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struct TransSimpleUniforms *uniforms = (struct TransSimpleUniforms *)_uniforms;
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pgl_vec4 newPixel = mkxp_pgl_texture2D(uniforms->currentScene, input->v_texCoord.x, input->v_texCoord.y);
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pgl_vec4 oldPixel = mkxp_pgl_texture2D(uniforms->frozenScene, input->v_texCoord.x, input->v_texCoord.y);
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builtins->gl_FragColor = pgl_mix_vec4(newPixel, oldPixel, uniforms->prog);
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}
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