void ofxBaseShaderNode::draw(){
if(!shader || !output)
return;
//cout<<"node "<<name<<" drawing"<<endl;
int w = output->getWidth(), h = output->getHeight();
shader->begin();
//loop over params and bind to uniforms
for(auto uncast_ptr:params){
//ofParameterGroup &g = uncast_ptr->castGroup();
auto ptr = static_pointer_cast<ofParameterGroup>(uncast_ptr);
ofParameterGroup &g = *ptr;
setShaderParam(g);
}
//set size parameter
if(hasSizeParameter){
// cout<<"node "<<name<<": autosetting size parameter to "<<w<<", "<<h<<endl;
shader->setUniform2i("size", w, h);
}
//loop over inputs, then over textures and bind to uniforms
size_t tex_count = 0;
for(auto input_node:inputs){
//loop over textures in each input
for(size_t j=0; j<input_node->getNumOutputTextures(); j++){
string param_name = textureInputs[tex_count];
//cout<<"node "<<name<<": setting texture input "<<tex_count<<" ("<<param_name<<") from texture "<<j<<" of "<<(input_node->name)<<endl;
ofTexture &tex = input_node->output->getTexture(j);
shader->setUniformTexture(param_name, tex, tex_count);
tex_count++;
}
}
//draw
//cout<<"node "<<name<<" drawing to "<<output->getNumTextures()<<" textures"<<endl;
output->begin();
output->activateAllDrawBuffers();
ofDrawRectangle(0,0,w,h);
output->end();
shader->end();
}
void drawText(const string* text, float x, float y, const string* font_name, int font_size) {
text = (string*)wstrdup(text);
HDC hdc = CreateCompatibleDC(0);
string* font_face = wstrdup(font_name);
int font_height = -MulDiv(font_size, GetDeviceCaps(hdc, LOGPIXELSY), 72);
HFONT hfont = CreateFontW(font_height, 0, 0, 0, FW_NORMAL, FALSE, FALSE,
FALSE, ANSI_CHARSET, OUT_DEFAULT_PRECIS,
CLIP_DEFAULT_PRECIS, PROOF_QUALITY,
DEFAULT_PITCH, font_face);
free(font_face);
SelectObject(hdc, hfont);
SetBkMode(hdc, TRANSPARENT);
SetTextColor(hdc, RGB(255, 0, 0));
RECT rect = { 0 };
DrawTextW(hdc, text, -1, &rect, DT_CALCRECT | DT_NOCLIP);
int width = rect.right - rect.left + 2,
height = rect.bottom - rect.top + 2;
rect.left++;
rect.top++;
void* bitmap_data = calloc(width*height, sizeof(uint32_t));
for (int i = 3; i < width*height*4; i+= 4)
*((uint8_t*)bitmap_data+i) = 0xff;
HBITMAP hbitmap = CreateBitmap(width, height, 1, 32, bitmap_data);
SelectObject(hdc, hbitmap);
DrawTextW(hdc, text, -1, &rect, DT_TOP | DT_LEFT);
DeleteObject(hfont);
free(text);
GetBitmapBits(hbitmap, width*height*4, bitmap_data);
DeleteObject(hbitmap);
DeleteDC(hdc);
for (int i = 0; i < width*height*4; i += 4) {
*((uint8_t*)bitmap_data+i+3) = *((uint8_t*)bitmap_data+i+2);
*((uint8_t*)bitmap_data+i ) = 0x10;
*((uint8_t*)bitmap_data+i+1) = 0x10;
*((uint8_t*)bitmap_data+i+2) = 0x10;
}
textureT* tex = createTexture();
textureT* old_tex = useTexture(tex, 0);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_BGRA,
GL_UNSIGNED_BYTE, bitmap_data);
free(bitmap_data);
triMeshT* text_quad = createQuad(2.0f, 2.0f);
if (!text_shader)
initTextShader();
shaderT* old_shader = useShader(text_shader);
setShaderParam("ScreenSize", &(vec2) { (float)screenWidth(), (float)screenHeight() });
setShaderParam("TextRect" , &(vec4) { (float)x, (float)y, (float)width, (float)height });
GLint depth_mask;
glGetIntegerv(GL_DEPTH_WRITEMASK, &depth_mask);
GLboolean cull_face, depth_test;
glGetBooleanv(GL_CULL_FACE, &cull_face);
glGetBooleanv(GL_DEPTH_TEST, &depth_test);
glDepthMask(GL_FALSE);
glDisable (GL_CULL_FACE);
glDisable (GL_DEPTH_TEST);
drawMesh(text_quad);
glDepthMask(depth_mask);
if (cull_face) glEnable(GL_CULL_FACE);
if (depth_test) glEnable(GL_DEPTH_TEST);
useTexture (old_tex, 0);
useShader (old_shader);
freeTexture(tex);
freeMesh (text_quad);
}
