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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.
25 lines
1.4 KiB
C
25 lines
1.4 KiB
C
#include "blurH.pgl.h"
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void mkxpBlurHVS(float *_output, pgl_vec4 *_attribs, Shader_Builtins *builtins, void *_uniforms)
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{
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struct BlurHVarying *output = (struct BlurHVarying *)_output;
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struct BlurHAttribs *attribs = (struct BlurHAttribs *)_attribs;
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struct BlurHUniforms *uniforms = (struct BlurHUniforms *)_uniforms;
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builtins->gl_Position = mult_mat4_vec4(uniforms->projMat, (pgl_vec4){attribs->position.x, attribs->position.y, 0, 1});
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output->v_texCoord = mult_vec2s(attribs->texCoord, uniforms->texSizeInv);
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output->v_blurCoord[0] = mult_vec2s((pgl_vec2){attribs->texCoord.x-1.0f, attribs->texCoord.y}, uniforms->texSizeInv);
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output->v_blurCoord[1] = mult_vec2s((pgl_vec2){attribs->texCoord.x+1.0f, attribs->texCoord.y}, uniforms->texSizeInv);
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}
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void mkxpBlurHFS(float *_input, Shader_Builtins *builtins, void *_uniforms)
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{
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struct BlurHVarying *input = (struct BlurHVarying *)_input;
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struct BlurHUniforms *uniforms = (struct BlurHUniforms *)_uniforms;
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pgl_vec4 frag = {0, 0, 0, 0};
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frag = add_vec4s(frag, mkxp_pgl_texture2D(uniforms->texture, input->v_texCoord.x, input->v_texCoord.y));
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frag = add_vec4s(frag, mkxp_pgl_texture2D(uniforms->texture, input->v_blurCoord[0].x, input->v_blurCoord[0].y));
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frag = add_vec4s(frag, mkxp_pgl_texture2D(uniforms->texture, input->v_blurCoord[1].x, input->v_blurCoord[1].y));
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builtins->gl_FragColor = div_vec4s(frag, (pgl_vec4){3.0, 3.0, 3.0, 3.0});
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}
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