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singleVbo

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This commit is contained in:
jrkb 2023-06-17 09:00:53 +02:00
parent 172711cad3
commit cde337580d
6 changed files with 184 additions and 77 deletions
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4
src/LayerComposition.cpp
View file

@ -184,7 +184,7 @@ void LayerComposition::draw(int width, int height) const {
for(const auto & [identifier, layerCombo] : atlasLayerCombos){
if(identifier.type == LayerType::MSDFGEN){
auto combo = static_pointer_cast <MsdfAtlasLayerCombo>(layerCombo);
//combo->draw();
combo->draw();
}
}
for(unsigned int i = layerOrder.size(); i-- > 0;){
@ -219,7 +219,7 @@ void LayerComposition::drawCamera(const ofCamera & camera) const {
for(const auto & [identifier, layerCombo] : atlasLayerCombos){
if(identifier.type == LayerType::MSDFGEN){
auto combo = static_pointer_cast <MsdfAtlasLayerCombo>(layerCombo);
combo->draw(camera);
//combo->draw(camera);
}
}
}

111
src/MsdfAtlasLayerCombo.cpp
View file

@ -2,7 +2,9 @@
#include "AtlasLayerCombo.h"
#include "MsdfLayer.h"
#include "Utils.h"
#include "of3dGraphics.h"
#include "ofFileUtils.h"
#include "ofGraphics.h"
#include <GL/glext.h>
#include <GLES3/gl3.h>
@ -24,16 +26,37 @@ void MsdfAtlasLayerCombo::setup(const ComboIdentifier & layerIdentifier,
msdfShader = make_shared <ofShader>();
#ifdef TARGET_EMSCRIPTEN
if(ofFile("shaders/ES3/msdf/shader.frag").exists()){
msdfShader->load("shaders/ES3/msdf/shader");
}else{
//if(ofFile("shaders/ES3/msdf/shader.frag").exists()){
//msdfShader->load("shaders/ES3/msdf/shader");
//}else{
msdfShader->load("ofxMsdfgen/shaders/mix/ES3/shader");
}
//}
#else
msdfShader->load("ofxMsdfgen/shaders/mix/GL3/shader");
#endif
atlas->setup(this->identifier.fontPath, atlasSettings);
glGenVertexArrays(1, &vao);
glGenBuffers(1, &vbo);
glGenBuffers(1, &ebo);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 4, GL_FLOAT, false, sizeof(BufferVertex), (void *)offsetof(BufferVertex, position));
glEnableVertexAttribArray(1);
glVertexAttribPointer(1, 2, GL_FLOAT, false, sizeof(BufferVertex), (void *)offsetof(BufferVertex, uv_a));
glEnableVertexAttribArray(2);
glVertexAttribPointer(2, 2, GL_FLOAT, false, sizeof(BufferVertex), (void *)offsetof(BufferVertex, uv_b));
glEnableVertexAttribArray(3);
glVertexAttribPointer(3, 4, GL_FLOAT, false, sizeof(BufferVertex), (void *)offsetof(BufferVertex, color));
glEnableVertexAttribArray(4);
glVertexAttribPointer(4, 1, GL_FLOAT, false, sizeof(BufferVertex), (void *)offsetof(BufferVertex, mix));
glBindVertexArray(0);
}
void MsdfAtlasLayerCombo::update(){
@ -43,9 +66,9 @@ void MsdfAtlasLayerCombo::update(){
atlas->generate(useCache, saveToCache);
isDirty = false;
}
if(!uboIsSetup){
setupUbo();
}
//if(!uboIsSetup){
//setupUbo();
//}
}
void MsdfAtlasLayerCombo::setupUbo(){
@ -115,13 +138,77 @@ bool MsdfAtlasLayerCombo::hasChildren(){
}
// unique
void MsdfAtlasLayerCombo::draw(const ofCamera & camera){
vertices.clear();
parameters.clear();
void MsdfAtlasLayerCombo::draw(){
int elements = 0;
for(const auto & layer : layers){
vertices.insert(vertices.end(), layer->vertices.begin(), layer->vertices.end());
parameters.insert(parameters.end(), layer->parameters.begin(), layer->parameters.end());
elements += layer->nElements;
}
//vertices.resize(elements * 4);
//indices.resize(elements * 6);
vertices.clear();
indices.clear();
int offset = 0;
glm::vec4 bgColor;
for(const auto & layer : layers){
//vertices.insert(vertices.begin() + (offset * 4), layer->vertices.begin(), layer->vertices.end());
//indices.insert(indices.begin() + (offset * 6), layer->indices.begin(), layer->indices.end());
vertices.insert(vertices.end(), layer->vertices.begin(), layer->vertices.end());
indices.insert(indices.end(), layer->indices.begin(), layer->indices.end());
offset += layer->nElements;
layer->vertices.clear();
layer->indices.clear();
layer->nElements = 0;
bgColor = layer->uboParameters.bgColor;
}
float pixelRange = 2;
int atlas_w = getAtlasImage().getWidth();
int atlas_h = getAtlasImage().getHeight();
glm::vec2 unitRange = glm::vec2(pixelRange) / glm::vec2(atlas_w, atlas_h);
//ofPushStyle();
//vector <ofColor> colors{
//ofColor::yellow,
//ofColor::green,
//ofColor::blue,
//ofColor::red
//};
//int i = 0;
//for(BufferVertex & vertex : vertices){
//const auto & color = colors[int(i * 0.25) % colors.size()];
//ofSetColor(color);
//vertex.color[0] = color.r;
//vertex.color[1] = color.g;
//vertex.color[2] = color.b;
//vertex.color[3] = 1;
//ofDrawSphere(vertex.position[0], vertex.position[1], vertex.position[2], 2);
//i++;
//}
//ofPopStyle();
msdfShader->begin();
msdfShader->setUniform2f("unitRange", unitRange);
msdfShader->setUniform4f("bgColor", bgColor);
msdfShader->setUniformTexture("msdf", getAtlasImage().getTexture(), 0);
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(BufferVertex) * vertices.size(), vertices.data(), GL_DYNAMIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(int32_t) * indices.size(), indices.data(), GL_DYNAMIC_DRAW);
glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
msdfShader->end();
}
void MsdfAtlasLayerCombo::exit(){
glDeleteVertexArrays(1, &vao);
glDeleteBuffers(1, &vbo);
glDeleteBuffers(1, &ebo);
}
const ofImage & MsdfAtlasLayerCombo::getAtlasImage(){

12
src/MsdfAtlasLayerCombo.h
View file

@ -5,6 +5,7 @@
#include "Utils.h"
namespace ofxVariableLab {
using BufferVertex = MsdfLayer::BufferVertex;
struct MsdfAtlasLayerComboSettings : public AtlasLayerComboSettings {
float scale = 64;
float minimumScale = 64;
@ -20,7 +21,8 @@ class MsdfAtlasLayerCombo : public AtlasLayerCombo {
const ComboIdentifier & getIdentifier() const override;
void setVFlip(VFlipState vFlipState) override;
bool hasChildren() override;
void draw(const ofCamera & camera);
void draw();
void exit();
const ofImage & getAtlasImage();
string getAtlasImagePath();
shared_ptr <Layer> getLayer(); // TODO: is this used
@ -40,7 +42,11 @@ class MsdfAtlasLayerCombo : public AtlasLayerCombo {
GLint uboIndex;
void setupUbo();
bool uboIsSetup = false;
std::vector <MsdfLayer::BufferVertex> vertices;
std::vector <MsdfLayer::CharacterDrawParameters> parameters;
std::vector <BufferVertex> vertices;
std::vector <int32_t> indices;
GLuint vbo;
GLuint ebo;
GLuint vao;
};
}

64
src/MsdfLayer.cpp
View file

@ -314,15 +314,15 @@ void MsdfLayer::setBoundingBox(const Layer::BoundingBox & boundingBox){
}
void MsdfLayer::collectCharacter(const char character,
const ofNode & node,
const ofCamera & camera,
glm::vec4 color,
ofxVariableLab::FontVariation fontVariation){
const ofImage & atlasImage = atlas->getAtlasImage();
ofNode n = node;
n.setScale(n.getScale() * scaleFactor);
float pixelRange = 2;
int atlas_w = atlasImage.getWidth();
int atlas_h = atlasImage.getHeight();
glm::vec2 unitRange = glm::vec2(pixelRange) / glm::vec2(atlas_w, atlas_h);
float mix = -1;
ofxMsdfgen::GlyphGeometry gg_a;
@ -354,18 +354,12 @@ void MsdfLayer::collectCharacter(const char character,
gg_a.getQuadPlaneBounds(pl_a, pb_a, pr_a, pt_a);
gg_b.getQuadPlaneBounds(pl_b, pb_b, pr_b, pt_b);
double advance_a = gg_a.getAdvance();
double advance_b = gg_b.getAdvance();
float w = glm::mix(float(w_a), float(w_b), mix);
float h = glm::mix(float(h_a), float(h_b), mix);
float pl = glm::mix(float(pl_a), float(pl_b), mix);
float pt = glm::mix(float(pt_a), float(pt_b), mix);
double advance = glm::mix(advance_a, advance_b, mix);
ofPushMatrix();
float magic = atlas->settings.scale;
ofSetColor(ofFloatColor(1, 1, 1, 1));
getVFlip(settings.vFlipBehaviour,
ofGetCurrentOrientationMatrix(),
vFlip);
@ -384,49 +378,57 @@ void MsdfLayer::collectCharacter(const char character,
glm::vec2 scale_b = glm::vec2(float(w_b) / float(atlas_w),
float(h_b) / float(atlas_h));
BufferVertex v[4];
glm::vec4 p0 = n.getGlobalTransformMatrix() * glm::vec4(0, 0, 0, 1);
glm::vec4 p1 = n.getGlobalTransformMatrix() * glm::vec4(w, 0, 0, 1);
glm::vec4 p2 = n.getGlobalTransformMatrix() * glm::vec4(w, h, 0, 1);
glm::vec4 p3 = n.getGlobalTransformMatrix() * glm::vec4(0, h, 0, 1);
glm::vec2 uv0_a = glm::vec2();
glm::vec2 uv0_b = glm::vec2();
glm::vec2 uv1_a = glm::vec2();
glm::vec2 uv1_b = glm::vec2();
glm::vec2 uv2_a = glm::vec2();
glm::vec2 uv2_b = glm::vec2();
glm::vec2 uv3_a = glm::vec2();
glm::vec2 uv3_b = glm::vec2();
if(isInside(camera, p0)
|| isInside(camera, p1)
|| isInside(camera, p2)
|| isInside(camera, p3)){
glm::vec3 screenPosition = camera.worldToScreen(p0);
glm::vec3 cameraPosition = camera.worldToCamera(p0);
glm::vec2 uv0_a = translation_a;
glm::vec2 uv0_b = translation_b;
glm::vec2 uv1_a = glm::vec2(0, scale_a.y) + translation_a;
glm::vec2 uv1_b = glm::vec2(0, scale_b.y) + translation_b;
glm::vec2 uv2_a = scale_a + translation_a;
glm::vec2 uv2_b = scale_a + translation_a;
glm::vec2 uv3_a = glm::vec2(scale_a.x, 0) + translation_a;
glm::vec2 uv3_b = glm::vec2(scale_b.x, 0) + translation_b;
int32_t base = static_cast <int32_t>(vertices.size());
vertices.push_back(BufferVertex{
{p0.x, p0.y, p0.z, p0.w},
{uv0_a.x, uv0_a.y},
{uv0_b.x, uv0_b.y}
{uv0_b.x, uv0_b.y},
{color.r, color.g, color.b, color.a},
mix
});
vertices.push_back(BufferVertex{
{p1.x, p1.y, p1.z, p1.w},
{uv1_a.x, uv1_a.y},
{uv1_b.x, uv1_b.y}
{uv1_b.x, uv1_b.y},
{color.r, color.g, color.b, color.a},
mix
});
vertices.push_back(BufferVertex{
{p2.x, p2.y, p2.z, p2.w},
{uv2_a.x, uv2_a.y},
{uv2_b.x, uv2_b.y}
{uv2_b.x, uv2_b.y},
{color.r, color.g, color.b, color.a},
mix
});
vertices.push_back(BufferVertex{
{p3.x, p3.y, p3.z, p3.w},
{uv3_a.x, uv3_a.y},
{uv3_b.x, uv3_b.y}
{uv3_b.x, uv3_b.y},
{color.r, color.g, color.b, color.a},
mix
});
CharacterDrawParameters characterDrawParameters;
characterDrawParameters.unitRange = unitRange;
characterDrawParameters.fontColor = color;
characterDrawParameters.bgColor = uboParameters.bgColor;
characterDrawParameters.translation_a = translation_a;
characterDrawParameters.translation_b = translation_b;
characterDrawParameters.scale_a = scale_a;
characterDrawParameters.scale_b = scale_b;
characterDrawParameters.mix = mix;
parameters.push_back(characterDrawParameters);
indices.insert(indices.end(), {base, base + 1, base + 2, base + 2, base + 3, base});
nElements++;
}
}
void MsdfLayer::setAtlas(shared_ptr <ofxMsdfgen::Atlas> _atlas){
atlas = _atlas;

17
src/MsdfLayer.h
View file

@ -25,17 +25,8 @@ class MsdfLayer : public Layer {
GLfloat position[4];
GLfloat uv_a[2];
GLfloat uv_b[2];
};
struct CharacterDrawParameters {
glm::vec2 dimensions;
glm::vec4 fontColor;
glm::vec4 bgColor;
glm::vec2 unitRange;
glm::vec2 translation_a;
glm::vec2 scale_a;
glm::vec2 translation_b;
glm::vec2 scale_b;
float mix;
GLfloat color[4];
GLfloat mix;
};
void setup(const LayerSettings & settings = LayerSettings()) override;
void update() override;
@ -67,6 +58,7 @@ class MsdfLayer : public Layer {
void setBoundingBox(const Layer::BoundingBox & boundingBox) override;
void collectCharacter(const char character,
const ofNode & node,
const ofCamera & camera,
glm::vec4 color = glm::vec4(1, 1, 1, 1),
ofxVariableLab::FontVariation fontVariation = ofxVariableLab::FontVariation());
@ -88,7 +80,8 @@ class MsdfLayer : public Layer {
UboParameters uboParameters;
std::vector <BufferVertex> vertices;
std::vector <CharacterDrawParameters> parameters;
std::vector <int32_t> indices;
int nElements = 0;
private:
Props lastProps;

19
src/Utils.h
View file

@ -6,6 +6,10 @@
#include <set>
#include <glm/glm.hpp>
#include "json.hpp"
#include "ofAppRunner.h"
#include "of3dGraphics.h"
#include "ofCamera.h"
#include "ofUtils.h"
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_MULTIPLE_MASTERS_H
@ -163,4 +167,19 @@ static bool isInside(float px, float py, float x, float y, float w, float h){
return px >= x && px <= x + w && py >= y && py <= y + h;
}
static bool isInside(const ofCamera & camera, const glm::vec4 & position){
const auto & viewport = ofGetCurrentRenderer()->getCurrentViewport();
glm::vec3 screenPosition = camera.worldToScreen(position);
glm::vec3 cameraPosition = camera.worldToCamera(position);
//glm::mat4 clipSpaceToWorld = camera.getGlobalTransformMatrix() * glm::inverse(camera.getProjectionMatrix(viewport));
//glm::mat4 worldToClipSpace = camera.getProjectionMatrix(viewport);
//glm::vec4 worldSpacePosition = position * worldToClipSpace;
if(screenPosition.x >= 0.0f && screenPosition.x <= ofGetWidth()
&& screenPosition.y >= 0.0f && screenPosition.y <= ofGetHeight()
&& screenPosition.z <= 1.0f){
return true;
}
return false;
}
}