ofxAddons/ofxGPUFont
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verifying glyphs

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glyph.start & glyph.count look good, curves look good, incremental debugging :-)
This commit is contained in:
jrkb 2023-04-01 19:48:41 +02:00
parent d8a7bc7a98
commit 412c64298d
3 changed files with 99 additions and 64 deletions
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6
data/ofxGPUFont/shaders/GL3/font.frag
View file

@ -123,10 +123,10 @@ void main() {
alpha += computeCoverage(inverseDiameter.y, rotate(p0), rotate(p1), rotate(p2));
}
}
vec4 debug = texelFetch(curves, int(uv.x * textureSize(curves)));
result = vec4(debug.rgb, 1.0);
//vec4 debug = texelFetch(glyphs, int(uv.x * textureSize(glyphs)));
//result = vec4(debug.rgb, 1.0);
return;
//return;
if (enableSuperSamplingAntiAliasing) {
alpha *= 0.5;

51
example/src/gpufont/font.hpp
View file

@ -4,6 +4,7 @@
// because both files have mostly the same dependencies (OpenGL, GLM, FreeType).
#include "ofMain.h"
#include <GL/glext.h>
#include <ft2build.h>
#ifdef TARGET_OPENGLES
#include <GL/gl.h>
@ -336,6 +337,7 @@ class Font {
}
private:
bool done = false;
void uploadBuffers(){
cout << "bufferGlyphs.size(): " << bufferGlyphs.size() << endl;
cout << "bufferCurves.size(): " << bufferCurves.size() << endl;
@ -355,7 +357,7 @@ class Font {
//glBindBuffer(GL_TEXTURE_2D, curveBuffer);
//glBufferData(GL_TEXTURE_2D, sizeof(BufferCurve) * bufferCurves.size(), bufferCurves.data(), GL_STATIC_DRAW);
//glBindBuffer(GL_TEXTURE_2D, 0);
glActiveTexture(GL_TEXTURE0);
glActiveTexture(GL_TEXTURE2);
glBindTexture(GL_TEXTURE_2D, glyphBuffer);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
@ -364,7 +366,6 @@ class Font {
GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D,
0,
GL_RG32I,
@ -374,7 +375,39 @@ class Font {
GL_RG_INTEGER,
GL_INT,
bufferGlyphs.data());
glBindTexture(GL_TEXTURE_2D, 0);
//int size = 2048;
//float * data = new float[3 * size * sizeof(float)];
//for(unsigned int i = 0; i < size; i++){
//data[i * 3] = (float)(0.1f);
//data[i * 3 + 1] = (float)(0.5f);
//data[i * 3 + 2] = (float)(1.0f);
//}
//glTexImage2D(GL_TEXTURE_2D,
//0,
//GL_RGB32F,
//size,
//1,
//0,
//GL_RGB,
//GL_FLOAT,
//data);
/////////////////////////////////////////
//int size = 2048;
//uint32_t * data = new uint32_t[2 * size * sizeof(uint32_t)];
//for(unsigned int i = 0; i < size; i++){
//data[i * 2] = (uint32_t)(0.1f);
//data[i * 2 + 1] = (uint32_t)(255.0f);
//}
//glTexImage2D(GL_TEXTURE_2D,
//0,
//GL_RG32I,
//size,
//1,
//0,
//GL_RG_INTEGER,
//GL_INT,
//data);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, curveBuffer);
@ -703,17 +736,17 @@ class Font {
glActiveTexture(GL_TEXTURE0);
#else
glyphBuffer = glGetUniformLocation(program, "glyphs");
glUniform1i(glyphBuffer, 0);
glUniform1i(glyphBuffer, 2);
curveBuffer = glGetUniformLocation(program, "curves");
glUniform1i(curveBuffer, 1);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_BUFFER, glyphBuffer);
//glActiveTexture(GL_TEXTURE0);
//glBindTexture(GL_TEXTURE_2D, glyphBuffer);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_BUFFER, curveBuffer);
//glActiveTexture(GL_TEXTURE1);
//glBindTexture(GL_TEXTURE_BUFFER, curveBuffer);
glActiveTexture(GL_TEXTURE0);
//glActiveTexture(GL_TEXTURE0);
#endif
}

4
example/src/ofApp.cpp
View file

@ -124,9 +124,10 @@ start. I hope to capture something essential.)DONE";
void ofApp::update(){
}
bool hasDrawnOnce = false;
//--------------------------------------------------------------
void ofApp::draw(){
if(!hasDrawnOnce){
GLuint location;
int width = ofGetWidth();
@ -192,6 +193,7 @@ void ofApp::draw(){
glDisable(GL_BLEND);
ofDrawBitmapStringHighlight("fps: " + ofToString(ofGetFrameRate()), 20, 20);
}
}
//--------------------------------------------------------------