69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
#include "main.h"
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#ifndef EMSCRIPTEN
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#include <glad.h>
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#else
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#include <GL/gl.h>
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#endif
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#ifdef DEBUG
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#include <stdio.h>
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#endif
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void destroy_shader(unsigned int shader) { glDeleteProgram(shader); }
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unsigned int create_shader(void) { return glCreateProgram(); }
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void use_shader(unsigned int program) { glUseProgram(program); }
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unsigned char load_program_to_shader(
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unsigned int program, const char *src, unsigned int i)
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{
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int shader, status;
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unsigned int type[] = {
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[VERTEX] = GL_VERTEX_SHADER, [FRAGMENT] = GL_FRAGMENT_SHADER};
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if (!src)
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return 0;
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shader = glCreateShader(type[i]);
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glShaderSource(shader, 1, (const GLchar **)&src, ((void *)0));
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glCompileShader(shader);
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glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
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if (!status)
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{
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#ifdef DEBUG
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char log[256];
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glGetShaderInfoLog(shader, 256, NULL, log);
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printf("%s", log);
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#endif
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return 0;
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}
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glAttachShader(program, shader);
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glDeleteShader(shader);
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glLinkProgram(program);
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return 1;
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}
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void load_float_to_shader(unsigned int program, char *var, float f)
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{
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glUseProgram(program);
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glUniform1f(glGetUniformLocation(program, var), f);
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}
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void load_mat4_to_shader(unsigned int program, char *var, float *mat)
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{
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glUseProgram(program);
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glUniformMatrix4fv(glGetUniformLocation(program, var), 1, 0, mat);
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}
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void load_float4_to_shader(unsigned int program, char *var, float float4[4])
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{
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glUseProgram(program);
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glUniform4f(glGetUniformLocation(program, var), float4[0], float4[1],
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float4[2], float4[3]);
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}
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