void Fluid2DTextureApp::draw()
{
// clear out the window with black
gl::clear( Color( 0, 0, 0 ) );
gl::setMatricesWindow( getWindowWidth(), getWindowHeight() );
// Update the positions and tex coords
Rectf drawRect = getWindowBounds();
int limX = mFluid2D.resX() - 1;
int limY = mFluid2D.resY() - 1;
float dx = drawRect.getWidth()/(float)limX;
float dy = drawRect.getHeight()/(float)limY;
for( int j = 0; j < mFluid2D.resY(); ++j ) {
for( int i = 0; i < mFluid2D.resX(); ++i ) {
vec2 P = vec2( i*dx, j*dy );
vec2 uv = mFluid2D.texCoordAt( i, j );
int idx = j*mFluid2D.resX() + i;
mTriMesh->getPositions<2>()[idx] = P;
mTriMesh->getTexCoords0<2>()[idx] = uv;
}
}
mTex->bind();
gl::bindStockShader( gl::ShaderDef().color().texture() );
gl::draw( gl::VboMesh::create(*mTriMesh) );
mTex->unbind();
mParams.draw();
}
void srvlib::renderer::DrawTexture(ci::gl::Texture2dRef image, const glm::ivec2 &eye_size, const glm::ivec2 &draw_size, ci::gl::GlslProgRef shader){
ci::gl::disableDepthRead();
ci::gl::disableDepthWrite();
ci::gl::pushMatrices();
auto vp = ci::gl::getViewport();
ci::CameraOrtho o;
o.setOrtho(0.0f, (float)eye_size[0], 0.0f, (float)eye_size[1], (float)0, (float)1);
ci::gl::setProjectionMatrix(o.getProjectionMatrix());
ci::gl::setModelMatrix(glm::mat4());
ci::gl::setViewMatrix(glm::mat4());
image->bind();
if (shader){
shader->bind();
shader->uniform("tex0", 0);
}
else{
auto default_shader = ci::gl::getStockShader(ci::gl::ShaderDef().color().lambert());
default_shader->bind();
}
ci::Rectf bounds(0, 0, draw_size[0], draw_size[1]);
ci::gl::viewport(draw_size);
ci::gl::drawSolidRect(bounds);// , glm::vec2(0, 0), glm::vec2(1, 1));
ci::gl::viewport(vp);
image->unbind();
ci::gl::popMatrices();
ci::gl::enableDepthRead();
ci::gl::enableDepthWrite();
}