/*!
\param e effect
\param width width
\param height height
\param offsetTarget use offset target
*/
void render(const ProceduralEffect &e, float width, float height, bool offsetTarget)
{
if(e.texture1) {
e.texture1->Apply(1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
}
if(e.texture2) {
e.texture2->Apply(3);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
}
if(offsetTarget)
{
if(e.distortion1)
e.distortion1->Apply(0);
if(e.distortion2)
e.distortion2->Apply(2);
if(!e.distortion1 || !e.distortion2 || !e.effect.enableDistortion)
return;
}
else
{
if(e.offset1)
e.offset1->Apply(0);
if(e.offset2)
e.offset2->Apply(2);
}
assert(vshader && pshader);
vshader->apply();
float constants[8 * 4];
const TexCoord &c1 = (offsetTarget) ? e.displaceCoord1 : e.coord1;
const TexCoord &c2 = (offsetTarget) ? e.displaceCoord2 : e.coord2;
constants[0 + 0] = c1.offsetFactor.x;
constants[0 + 1] = c1.offsetFactor.y;
constants[4 + 0] = c1.offsetOffset.x;
constants[4 + 1] = c1.offsetOffset.y;
constants[8 + 0] = c1.baseFactor.x;
constants[8 + 1] = c1.baseFactor.y;
constants[12 + 0] = c1.baseOffset.x;
constants[12 + 1] = c1.baseOffset.y;
constants[16 + 0] = c2.offsetFactor.x;
constants[16 + 1] = c2.offsetFactor.y;
constants[20 + 0] = c2.offsetOffset.x;
constants[20 + 1] = c2.offsetOffset.y;
constants[24 + 0] = c2.baseFactor.x;
constants[24 + 1] = c2.baseFactor.y;
constants[28 + 0] = c2.baseOffset.x;
constants[28 + 1] = c2.baseOffset.y;
for (int i = 0; i < 8; i++) {
glProgramEnvParameter4fvARB(GL_VERTEX_PROGRAM_ARB, i, constants + (4 * i));
}
float scale1 = (offsetTarget) ? e.effect.distortion1.offset.scale.x : e.effect.source1.offset.scale.x;
float scale2 = (offsetTarget) ? e.effect.distortion2.offset.scale.x : e.effect.source2.offset.scale.x;
float param[4] = { scale1, 0, 0, 0 };
glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 0, param);
param[0] = 0; param[1] = scale1;
glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 1, param);
param[0] = scale2; param[1] = 0;
glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 3, param);
param[0] = 0; param[1] = scale2;
glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 4, param);
if(offsetTarget)
{
poffsetShader->apply();
float scale = (scale1 + scale2) * .25f;
float c2[4] = { scale, scale, scale, scale };
glProgramEnvParameter4fvARB(GL_FRAGMENT_PROGRAM_ARB, 2, c2);
}
else
{
pshader->apply();
}
vbuffer->apply(0);
ibuffer->render(2, 4);
frozenbyte::storm::PixelShader::disable();
}
