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Code Issues 121 Wiki Activity

experiments with shaders

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VB
2017-03-19 10:48:22 +01:00
parent 3941283381
commit 4d19e49398
20 changed files with 381 additions and 191 deletions
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55
renderer.cpp
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@@ -10,39 +10,27 @@ http://mozilla.org/MPL/2.0/.
#include "stdafx.h"
#include "renderer.h"
#include "globals.h"
#include "World.h"
opengl_renderer GfxRenderer;
extern TWorld World;
void
opengl_renderer::Init() {
// create dynamic light pool
for( int idx = 0; idx < Global::DynamicLightCount; ++idx ) {
opengl_light light;
light.id = GL_LIGHT1 + idx;
light.position[ 3 ] = 1.0f;
::glLightf( light.id, GL_SPOT_CUTOFF, 7.5f );
::glLightf( light.id, GL_SPOT_EXPONENT, 7.5f );
::glLightf( light.id, GL_CONSTANT_ATTENUATION, 0.0f );
::glLightf( light.id, GL_LINEAR_ATTENUATION, 0.035f );
m_lights.emplace_back( light );
}
}
void
opengl_renderer::Update_Lights( light_array const &Lights ) {
size_t const count = std::min( m_lights.size(), Lights.data.size() );
size_t const count = std::min( (size_t)Global::DynamicLightCount, Lights.data.size() );
if( count == 0 ) { return; }
auto renderlight = m_lights.begin();
size_t renderlight = 0;
for( auto const &scenelight : Lights.data ) {
if( renderlight == m_lights.end() ) {
if( renderlight == Global::DynamicLightCount ) {
// we ran out of lights to assign
break;
}
@@ -55,40 +43,27 @@ opengl_renderer::Update_Lights( light_array const &Lights ) {
// but there could still be weaker lights which are closer, so keep looking
continue;
}
// if the light passed tests so far, it's good enough
renderlight->set_position( scenelight.position );
renderlight->direction = scenelight.direction;
auto const luminance = Global::fLuminance; // TODO: adjust this based on location, e.g. for tunnels
renderlight->diffuse[ 0 ] = std::max( 0.0, scenelight.color.x - luminance );
renderlight->diffuse[ 1 ] = std::max( 0.0, scenelight.color.y - luminance );
renderlight->diffuse[ 2 ] = std::max( 0.0, scenelight.color.z - luminance );
renderlight->ambient[ 0 ] = std::max( 0.0, scenelight.color.x * scenelight.intensity - luminance);
renderlight->ambient[ 1 ] = std::max( 0.0, scenelight.color.y * scenelight.intensity - luminance );
renderlight->ambient[ 2 ] = std::max( 0.0, scenelight.color.z * scenelight.intensity - luminance );
// if the light passed tests so far, it's good enough
::glLightf( renderlight->id, GL_LINEAR_ATTENUATION, (0.25f * scenelight.count) / std::pow( scenelight.count, 2 ) );
::glEnable( renderlight->id );
auto const luminance = Global::fLuminance; // TODO: adjust this based on location, e.g. for tunnels
float3 position(scenelight.position.x, scenelight.position.y, scenelight.position.z);
float3 direction(scenelight.direction.x, scenelight.direction.y, scenelight.direction.z);
float3 color(scenelight.color.x,
scenelight.color.y,
scenelight.color.z);
renderlight->apply_intensity();
renderlight->apply_angle();
World.shader.set_light((GLuint)renderlight + 1, gl_program_light::SPOT, position, direction, 0.906f, 0.866f, color, 0.007f, 0.0002f);
++renderlight;
}
while( renderlight != m_lights.end() ) {
// if we went through all scene lights and there's still opengl lights remaining, kill these
::glDisable( renderlight->id );
++renderlight;
}
World.shader.set_light_count((GLuint)renderlight + 1);
}
void
opengl_renderer::Disable_Lights() {
for( size_t idx = 0; idx < m_lights.size() + 1; ++idx ) {
::glDisable( GL_LIGHT0 + (int)idx );
}
World.shader.set_light_count(0);
}
//---------------------------------------------------------------------------