126 lines
2.2 KiB
C
126 lines
2.2 KiB
C
/*
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Raydium - CQFD Corp.
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http://raydium.org/
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License: GPL - GNU General Public License, see "gpl.txt" file.
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*/
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#ifndef DONT_INCLUDE_HEADERS
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#include "index.h"
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#else
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#include "headers/fog.h"
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#endif
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void raydium_fog_enable(void)
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{
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raydium_fog_enabled_tag=1;
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raydium_fog_apply();
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}
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void raydium_fog_disable(void)
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{
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raydium_fog_enabled_tag=0;
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raydium_fog_apply();
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}
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void raydium_fog_color_update(void)
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{
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glFogfv(GL_FOG_COLOR,raydium_background_color);
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}
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void raydium_fog_mode(GLuint mode)
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{
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raydium_fog_mode_value=mode;
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}
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void raydium_fog_density(GLfloat density)
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{
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raydium_fog_density_value=density;
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}
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void raydium_fog_near(GLfloat fnear)
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{
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raydium_fog_near_value=fnear;
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}
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void raydium_fog_far(GLfloat ffar)
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{
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raydium_fog_far_value=ffar;
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}
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void raydium_fog_apply(void)
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{
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if(raydium_fog_enabled_tag)
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{
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glEnable(GL_FOG);
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glFogi(GL_FOG_MODE,raydium_fog_mode_value);
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raydium_fog_color_update();
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glFogf(GL_FOG_DENSITY, raydium_fog_density_value);
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glHint(GL_FOG_HINT, GL_FASTEST);
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if(raydium_fog_far_value==0)
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{
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raydium_fog_far_value=raydium_projection_far;
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raydium_fog_near_value=raydium_projection_far/4.f;
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}
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glFogf(GL_FOG_START,raydium_fog_near_value);
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glFogf(GL_FOG_END,raydium_fog_far_value);
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}
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else
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{
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glDisable(GL_FOG);
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}
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}
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void raydium_fog_wait(void)
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{
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glDisable(GL_FOG);
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}
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void raydium_fog_init(void)
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{
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raydium_fog_far_value=0;
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raydium_fog_near_value=0;
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raydium_fog_density_value=0;
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raydium_fog_mode_value=RAYDIUM_FOG_MODE_LINEAR;
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raydium_fog_volumetric_enabled_tag=0;
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switch(RENDER_VOLUMETRIC_FOG_AXIS)
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{
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case 0:
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raydium_fog_volumetric_array=raydium_vertex_x;
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break;
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case 1:
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raydium_fog_volumetric_array=raydium_vertex_y;
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break;
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case 2:
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raydium_fog_volumetric_array=raydium_vertex_z;
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break;
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default:
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raydium_log("fog: FAILED: RENDER_VOLUMETRIC_FOG_AXIS is broken !");
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exit(100);
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}
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raydium_fog_enable();
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raydium_log("fog: OK");
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}
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void raydium_fog_volumetric_support(void)
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{
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raydium_fog_volumetric_enabled_tag=1;
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}
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void raydium_fog_volumetric_enable(void)
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{
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glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FOG_COORDINATE_EXT);
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}
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void raydium_fog_volumetric_disable(void)
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{
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glFogi(GL_FOG_COORDINATE_SOURCE_EXT, GL_FRAGMENT_DEPTH_EXT);
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}
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