36 lines
1.6 KiB
C
36 lines
1.6 KiB
C
#include <linmath.h>
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#include "client/camera.h"
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#include "client/opengl.h"
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#include "client/light.h"
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#include "common/day.h"
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void light_shader_locate(LightShader *shader)
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{
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shader->loc_daylight = glGetUniformLocation(shader->prog, "daylight"); GL_DEBUG
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shader->loc_fogColor = glGetUniformLocation(shader->prog, "fogColor"); GL_DEBUG
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shader->loc_ambientLight = glGetUniformLocation(shader->prog, "ambientLight"); GL_DEBUG
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shader->loc_lightDir = glGetUniformLocation(shader->prog, "lightDir"); GL_DEBUG
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shader->loc_cameraPos = glGetUniformLocation(shader->prog, "cameraPos"); GL_DEBUG
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}
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void light_shader_update(LightShader *shader)
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{
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vec4 base_sunlight_dir = {0.0f, 0.0f, -1.0f, 1.0f};
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vec4 sunlight_dir;
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mat4x4 sunlight_mat;
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mat4x4_identity(sunlight_mat);
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mat4x4_rotate(sunlight_mat, sunlight_mat, 1.0f, 0.0f, 0.0f, get_sun_angle() + M_PI / 2.0f);
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mat4x4_mul_vec4(sunlight_dir, sunlight_mat, base_sunlight_dir);
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f32 daylight = get_daylight();
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f32 ambient_light = f32_mix(0.3f, 0.7f, daylight);
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v3f32 fog_color = v3f32_mix((v3f32) {0x03, 0x0A, 0x1A}, (v3f32) {0x87, 0xCE, 0xEB}, daylight);
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glProgramUniform1f(shader->prog, shader->loc_daylight, daylight); GL_DEBUG
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glProgramUniform3f(shader->prog, shader->loc_fogColor, fog_color.x / 0xFF * ambient_light, fog_color.y / 0xFF * ambient_light, fog_color.z / 0xFF * ambient_light); GL_DEBUG
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glProgramUniform1f(shader->prog, shader->loc_ambientLight, ambient_light); GL_DEBUG
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glProgramUniform3f(shader->prog, shader->loc_lightDir, sunlight_dir[0], sunlight_dir[1], sunlight_dir[2]); GL_DEBUG
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glProgramUniform3f(shader->prog, shader->loc_cameraPos, camera.eye[0], camera.eye[1], camera.eye[2]); GL_DEBUG
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}
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