void Bitmap::hueChange(int hue)
{
GUARD_DISPOSED;
GUARD_MEGA;
if ((hue % 360) == 0)
return;
flush();
TEXFBO newTex = shState->texPool().request(width(), height());
FloatRect texRect(rect());
Quad &quad = shState->gpQuad();
quad.setTexPosRect(texRect, texRect);
quad.setColor(Vec4(1, 1, 1, 1));
/* Calculate hue parameter */
hue = wrapRange(hue, 0, 359);
float hueAdj = -((M_PI * 2) / 360) * hue;
HueShader &shader = shState->shaders().hue;
shader.bind();
shader.setHueAdjust(hueAdj);
FBO::bind(newTex.fbo, FBO::Draw);
p->pushSetViewport(shader);
p->bindTexture(shader);
p->blitQuad(quad);
shader.unbind();
p->popViewport();
TEX::unbind();
shState->texPool().release(p->gl);
p->gl = newTex;
modified();
}
void Bitmap::hueChange(int hue)
{
guardDisposed();
GUARD_MEGA;
if ((hue % 360) == 0)
return;
TEXFBO newTex = shState->texPool().request(width(), height());
FloatRect texRect(rect());
Quad &quad = shState->gpQuad();
quad.setTexPosRect(texRect, texRect);
quad.setColor(Vec4(1, 1, 1, 1));
HueShader &shader = shState->shaders().hue;
shader.bind();
/* Shader expects normalized value */
shader.setHueAdjust(wrapRange(hue, 0, 359) / 360.0f);
FBO::bind(newTex.fbo);
p->pushSetViewport(shader);
p->bindTexture(shader);
p->blitQuad(quad);
p->popViewport();
TEX::unbind();
shState->texPool().release(p->gl);
p->gl = newTex;
p->onModified();
}
