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Textureable sun and moon.
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RealBadAngel committed Apr 21, 2014
1 parent da3c5c7 commit f202678
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Showing 2 changed files with 192 additions and 104 deletions.
290 changes: 187 additions & 103 deletions src/sky.cpp
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Expand Up @@ -51,6 +51,30 @@ Sky::Sky(scene::ISceneNode* parent, scene::ISceneManager* mgr, s32 id, LocalPlay
m_materials[2].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
//m_materials[2].MaterialType = video::EMT_TRANSPARENT_ADD_COLOR;

m_sun_texture = mgr->getVideoDriver()->getTexture(
getTexturePath("sun.png").c_str());
m_moon_texture = mgr->getVideoDriver()->getTexture(
getTexturePath("moon.png").c_str());
m_sun_tonemap = mgr->getVideoDriver()->getTexture(
getTexturePath("sun_tonemap.png").c_str());
m_moon_tonemap = mgr->getVideoDriver()->getTexture(
getTexturePath("moon_tonemap.png").c_str());

if (m_sun_texture){
m_materials[3] = mat;
m_materials[3].setTexture(0, m_sun_texture);
m_materials[3].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
if (m_sun_tonemap)
m_materials[3].Lighting = true;
}
if (m_moon_texture){
m_materials[4] = mat;
m_materials[4].setTexture(0, m_moon_texture);
m_materials[4].MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL;
if (m_moon_tonemap)
m_materials[4].Lighting = true;
}

for(u32 i=0; i<SKY_STAR_COUNT; i++){
m_stars[i] = v3f(
myrand_range(-10000,10000),
Expand Down Expand Up @@ -135,6 +159,24 @@ void Sky::render()
video::SColor mooncolor = mooncolor_f.toSColor();
video::SColor mooncolor2 = mooncolor2_f.toSColor();

// Calculate offset normalized to the X dimension of a 512x1 px tonemap
float offset=(1.0-fabs(sin((m_time_of_day - 0.5)*irr::core::PI)))*511;

if (m_sun_tonemap){
u8 * texels = (u8 *)m_sun_tonemap->lock();
video::SColor* texel = (video::SColor *)(texels + (u32)offset * 4);
video::SColor texel_color (255,texel->getRed(),texel->getGreen(), texel->getBlue());
m_sun_tonemap->unlock();
m_materials[3].EmissiveColor = texel_color;
}
if (m_moon_tonemap){
u8 * texels = (u8 *)m_moon_tonemap->lock();
video::SColor* texel = (video::SColor *)(texels + (u32)offset * 4);
video::SColor texel_color (255,texel->getRed(),texel->getGreen(), texel->getBlue());
m_moon_tonemap->unlock();
m_materials[4].EmissiveColor = texel_color;
}

const f32 t = 1.0f;
const f32 o = 0.0f;
static const u16 indices[4] = {0,1,2,3};
Expand Down Expand Up @@ -219,119 +261,161 @@ void Sky::render()
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
}

driver->setMaterial(m_materials[1]);

// Draw sun
if(wicked_time_of_day > 0.15 && wicked_time_of_day < 0.85)
{
float d = sunsize * 1.7;
video::SColor c = suncolor;
c.setAlpha(0.05*255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to +X (east)
vertices[i].Pos.rotateXZBy(90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

d = sunsize * 1.2;
c = suncolor;
c.setAlpha(0.15*255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to +X (east)
vertices[i].Pos.rotateXZBy(90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

d = sunsize;
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to +X (east)
vertices[i].Pos.rotateXZBy(90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

d = sunsize * 0.7;
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor2, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor2, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor2, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor2, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to +X (east)
vertices[i].Pos.rotateXZBy(90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
if(wicked_time_of_day > 0.15 && wicked_time_of_day < 0.85){
if (!m_sun_texture){
driver->setMaterial(m_materials[1]);
float d = sunsize * 1.7;
video::SColor c = suncolor;
c.setAlpha(0.05*255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to +X (east)
vertices[i].Pos.rotateXZBy(90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

d = sunsize * 1.2;
c = suncolor;
c.setAlpha(0.15*255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to +X (east)
vertices[i].Pos.rotateXZBy(90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

d = sunsize;
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to +X (east)
vertices[i].Pos.rotateXZBy(90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

d = sunsize * 0.7;
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, suncolor2, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, suncolor2, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, suncolor2, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, suncolor2, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to +X (east)
vertices[i].Pos.rotateXZBy(90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
} else {
driver->setMaterial(m_materials[3]);
float d = sunsize * 1.7;
video::SColor c;
if (m_sun_tonemap)
c = video::SColor (0,0,0,0);
else
c = video::SColor (255,255,255,255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to +X (east)
vertices[i].Pos.rotateXZBy(90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
}

// Draw moon
if(wicked_time_of_day < 0.3 || wicked_time_of_day > 0.7)
{
float d = moonsize * 1.9;
video::SColor c = mooncolor;
c.setAlpha(0.05*255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to -X (west)
vertices[i].Pos.rotateXZBy(-90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

d = moonsize * 1.3;
c = mooncolor;
c.setAlpha(0.15*255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to -X (west)
vertices[i].Pos.rotateXZBy(-90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

d = moonsize;
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, mooncolor, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, mooncolor, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, mooncolor, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to -X (west)
vertices[i].Pos.rotateXZBy(-90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
if (!m_moon_texture){
driver->setMaterial(m_materials[1]);
float d = moonsize * 1.9;
video::SColor c = mooncolor;
c.setAlpha(0.05*255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to -X (west)
vertices[i].Pos.rotateXZBy(-90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

float d2 = moonsize * 0.6;
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor2, t, t);
vertices[1] = video::S3DVertex( d2,-d,-1, 0,0,1, mooncolor2, o, t);
vertices[2] = video::S3DVertex( d2, d2,-1, 0,0,1, mooncolor2, o, o);
vertices[3] = video::S3DVertex(-d, d2,-1, 0,0,1, mooncolor2, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to -X (west)
vertices[i].Pos.rotateXZBy(-90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
d = moonsize * 1.3;
c = mooncolor;
c.setAlpha(0.15*255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to -X (west)
vertices[i].Pos.rotateXZBy(-90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

d = moonsize;
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, mooncolor, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, mooncolor, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, mooncolor, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to -X (west)
vertices[i].Pos.rotateXZBy(-90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);

float d2 = moonsize * 0.6;
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, mooncolor2, t, t);
vertices[1] = video::S3DVertex( d2,-d,-1, 0,0,1, mooncolor2, o, t);
vertices[2] = video::S3DVertex( d2, d2,-1, 0,0,1, mooncolor2, o, o);
vertices[3] = video::S3DVertex(-d, d2,-1, 0,0,1, mooncolor2, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to -X (west)
vertices[i].Pos.rotateXZBy(-90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
} else {
driver->setMaterial(m_materials[4]);
float d = moonsize * 1.9;
video::SColor c;
if (m_moon_tonemap)
c = video::SColor (0,0,0,0);
else
c = video::SColor (255,255,255,255);
vertices[0] = video::S3DVertex(-d,-d,-1, 0,0,1, c, t, t);
vertices[1] = video::S3DVertex( d,-d,-1, 0,0,1, c, o, t);
vertices[2] = video::S3DVertex( d, d,-1, 0,0,1, c, o, o);
vertices[3] = video::S3DVertex(-d, d,-1, 0,0,1, c, t, o);
for(u32 i=0; i<4; i++){
// Switch from -Z (south) to -X (west)
vertices[i].Pos.rotateXZBy(-90);
vertices[i].Pos.rotateXYBy(wicked_time_of_day * 360 - 90);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
}
driver->drawIndexedTriangleFan(&vertices[0], 4, indices, 2);
}

// Stars
driver->setMaterial(m_materials[1]);
do{
float starbrightness = MYMAX(0, MYMIN(1,
(0.285 - fabs(wicked_time_of_day < 0.5 ?
Expand Down
6 changes: 5 additions & 1 deletion src/sky.h
View file
Expand Up @@ -24,7 +24,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#ifndef SKY_HEADER
#define SKY_HEADER

#define SKY_MATERIAL_COUNT 3
#define SKY_MATERIAL_COUNT 5
#define SKY_STAR_COUNT 200

// Skybox, rendered with zbuffer turned off, before all other nodes.
Expand Down Expand Up @@ -127,6 +127,10 @@ class Sky : public scene::ISceneNode
v3f m_stars[SKY_STAR_COUNT];
video::S3DVertex m_star_vertices[SKY_STAR_COUNT*4];
LocalPlayer* m_player;
video::ITexture* m_sun_texture;
video::ITexture* m_moon_texture;
video::ITexture* m_sun_tonemap;
video::ITexture* m_moon_tonemap;
};

#endif
Expand Down

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