void GLPrimitiveRenderer::loadBufferData()
{
PrimVertex vertexData[4] = {
{ PrimVec4(-1, -1, 0.0, 1.0 ), PrimVec4( 1.0, 0.0, 0.0, 1.0 ) ,PrimVec2(0,0)},
{ PrimVec4(-1, 1, 0.0, 1.0 ), PrimVec4( 0.0, 1.0, 0.0, 1.0 ) ,PrimVec2(0,1)},
{ PrimVec4( 1, 1, 0.0, 1.0 ), PrimVec4( 0.0, 0.0, 1.0, 1.0 ) ,PrimVec2(1,1)},
{ PrimVec4( 1, -1, 0.0, 1.0 ), PrimVec4( 1.0, 1.0, 1.0, 1.0 ) ,PrimVec2(1,0)}
};
glGenVertexArrays(1, &m_data->m_vertexArrayObject);
glBindVertexArray(m_data->m_vertexArrayObject);
glGenBuffers(1, &m_data->m_vertexBuffer);
glBindBuffer(GL_ARRAY_BUFFER, m_data->m_vertexBuffer);
glBufferData(GL_ARRAY_BUFFER, 4 * sizeof(PrimVertex), vertexData, GL_DYNAMIC_DRAW);
assert(glGetError()==GL_NO_ERROR);
glGenBuffers(1, &m_data->m_indexBuffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_data->m_indexBuffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER,6*sizeof(int), s_indexData,GL_STATIC_DRAW);
glEnableVertexAttribArray(m_data->m_positionAttribute);
glEnableVertexAttribArray(m_data->m_colourAttribute);
assert(glGetError()==GL_NO_ERROR);
glEnableVertexAttribArray(m_data->m_textureAttribute);
glVertexAttribPointer(m_data->m_positionAttribute, 4, GL_FLOAT, GL_FALSE, sizeof(PrimVertex), (const GLvoid *)0);
glVertexAttribPointer(m_data->m_colourAttribute , 4, GL_FLOAT, GL_FALSE, sizeof(PrimVertex), (const GLvoid *)sizeof(PrimVec4));
glVertexAttribPointer(m_data->m_textureAttribute , 2, GL_FLOAT, GL_FALSE, sizeof(PrimVertex), (const GLvoid *)(sizeof(PrimVec4)+sizeof(PrimVec4)));
assert(glGetError()==GL_NO_ERROR);
glActiveTexture(GL_TEXTURE0);
GLubyte* image=new GLubyte[256*256*3];
for(int y=0;y<256;++y)
{
// const int t=y>>5;
GLubyte* pi=image+y*256*3;
for(int x=0;x<256;++x)
{
if (x<y)//x<2||y<2||x>253||y>253)
{
pi[0]=255;
pi[1]=0;
pi[2]=0;
} else
{
pi[0]=255;
pi[1]=255;
pi[2]=255;
}
pi+=3;
}
}
glGenTextures(1,(GLuint*)&m_data->m_texturehandle);
glBindTexture(GL_TEXTURE_2D,m_data->m_texturehandle);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 256,256,0,GL_RGB,GL_UNSIGNED_BYTE,image);
glGenerateMipmap(GL_TEXTURE_2D);
assert(glGetError()==GL_NO_ERROR);
delete[] image;
}
void SimpleOpenGL3App::drawText3D( const char* txt, float worldPosX, float worldPosY, float worldPosZ, float size1)
{
B3_PROFILE("SimpleOpenGL3App::drawText3D");
float viewMat[16];
float projMat[16];
CommonCameraInterface* cam = m_instancingRenderer->getActiveCamera();
cam->getCameraViewMatrix(viewMat);
cam->getCameraProjectionMatrix(projMat);
float camPos[4];
cam->getCameraPosition(camPos);
//b3Vector3 cp= b3MakeVector3(camPos[0],camPos[2],camPos[1]);
//b3Vector3 p = b3MakeVector3(worldPosX,worldPosY,worldPosZ);
//float dist = (cp-p).length();
//float dv = 0;//dist/1000.f;
//
//printf("str = %s\n",unicodeText);
float dx=0;
//int measureOnly=0;
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
int viewport[4]={0,0,m_instancingRenderer->getScreenWidth(),m_instancingRenderer->getScreenHeight()};
float posX = 450.f;
float posY = 100.f;
float winx,winy, winz;
if (!projectWorldCoordToScreen(worldPosX, worldPosY, worldPosZ,viewMat,projMat,viewport,&winx, &winy, &winz))
{
return;
}
posX = winx;
posY = m_instancingRenderer->getScreenHeight()/2+(m_instancingRenderer->getScreenHeight()/2)-winy;
if (0)//m_useTrueTypeFont)
{
bool measureOnly = false;
float fontSize= 32;//64;//512;//128;
sth_draw_text(m_data->m_fontStash,
m_data->m_droidRegular,fontSize,posX,posY,
txt,&dx, this->m_instancingRenderer->getScreenWidth(),this->m_instancingRenderer->getScreenHeight(),measureOnly,m_window->getRetinaScale());
sth_end_draw(m_data->m_fontStash);
sth_flush_draw(m_data->m_fontStash);
} else
{
//float width = 0.f;
int pos=0;
//float color[]={0.2f,0.2,0.2f,1.f};
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D,m_data->m_largeFontTextureId);
//float width = r.x;
//float extraSpacing = 0.;
float startX = posX;
float startY = posY-g_DefaultLargeFont->m_CharHeight*size1;
while (txt[pos])
{
int c = txt[pos];
//r.h = g_DefaultNormalFont->m_CharHeight;
//r.w = g_DefaultNormalFont->m_CharWidth[c]+extraSpacing;
float endX = startX+g_DefaultLargeFont->m_CharWidth[c]*size1;
float endY = posY;
float currentColor[]={1.f,0.2,0.2f,1.f};
// m_primRenderer->drawTexturedRect(startX, startY, endX, endY, currentColor,g_DefaultLargeFont->m_CharU0[c],g_DefaultLargeFont->m_CharV0[c],g_DefaultLargeFont->m_CharU1[c],g_DefaultLargeFont->m_CharV1[c]);
float u0 = g_DefaultLargeFont->m_CharU0[c];
float u1 = g_DefaultLargeFont->m_CharU1[c];
float v0 = g_DefaultLargeFont->m_CharV0[c];
float v1 = g_DefaultLargeFont->m_CharV1[c];
float color[4] = {currentColor[0],currentColor[1],currentColor[2],currentColor[3]};
float x0 = startX;
float x1 = endX;
float y0 = startY;
float y1 = endY;
int screenWidth = m_instancingRenderer->getScreenWidth();
int screenHeight = m_instancingRenderer->getScreenHeight();
float z = 2.f*winz-1.f;//*(far
float identity[16]={1,0,0,0,
0,1,0,0,
0,0,1,0,
0,0,0,1};
PrimVertex vertexData[4] = {
PrimVertex(PrimVec4(-1.f+2.f*x0/float(screenWidth), 1.f-2.f*y0/float(screenHeight), z, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u0,v0)),
PrimVertex(PrimVec4(-1.f+2.f*x0/float(screenWidth), 1.f-2.f*y1/float(screenHeight), z, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u0,v1)),
PrimVertex(PrimVec4( -1.f+2.f*x1/float(screenWidth), 1.f-2.f*y1/float(screenHeight), z, 1.f ), PrimVec4(color[0], color[1], color[2], color[3]) ,PrimVec2(u1,v1)),
PrimVertex(PrimVec4( -1.f+2.f*x1/float(screenWidth), 1.f-2.f*y0/float(screenHeight), z, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u1,v0))
};
m_primRenderer->drawTexturedRect3D(vertexData[0],vertexData[1],vertexData[2],vertexData[3],identity,identity,false);
//DrawTexturedRect(0,r,g_DefaultNormalFont->m_CharU0[c],g_DefaultNormalFont->m_CharV0[c],g_DefaultNormalFont->m_CharU1[c],g_DefaultNormalFont->m_CharV1[c]);
// DrawFilledRect(r);
startX = endX;
//startY = endY;
pos++;
}
glBindTexture(GL_TEXTURE_2D,0);
}
glDisable(GL_BLEND);
}
void GLPrimitiveRenderer::drawTexturedRect(float x0, float y0, float x1, float y1, float color[4], float u0,float v0, float u1, float v1, int useRGBA)
{
float identity[16]={1,0,0,0,
0,1,0,0,
0,0,1,0,
0,0,0,1};
PrimVertex vertexData[4] = {
{ PrimVec4(-1.f+2.f*x0/float(m_screenWidth), 1.f-2.f*y0/float(m_screenHeight), 0.f, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u0,v0)},
{ PrimVec4(-1.f+2.f*x0/float(m_screenWidth), 1.f-2.f*y1/float(m_screenHeight), 0.f, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u0,v1)},
{ PrimVec4( -1.f+2.f*x1/float(m_screenWidth), 1.f-2.f*y1/float(m_screenHeight), 0.f, 1.f ), PrimVec4(color[0], color[1], color[2], color[3]) ,PrimVec2(u1,v1)},
{ PrimVec4( -1.f+2.f*x1/float(m_screenWidth), 1.f-2.f*y0/float(m_screenHeight), 0.f, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u1,v0)}
};
drawTexturedRect3D(vertexData[0],vertexData[1],vertexData[2],vertexData[3],identity,identity,useRGBA);
}
void SimpleOpenGL2App::drawText3D( const char* txt, float worldPosX, float worldPosY, float worldPosZ, float size1)
{
saveOpenGLState(gApp2->m_renderer->getScreenWidth(),gApp2->m_renderer->getScreenHeight());
float viewMat[16];
float projMat[16];
CommonCameraInterface* cam = gApp2->m_renderer->getActiveCamera();
cam->getCameraViewMatrix(viewMat);
cam->getCameraProjectionMatrix(projMat);
float camPos[4];
cam->getCameraPosition(camPos);
//b3Vector3 cp= b3MakeVector3(camPos[0],camPos[2],camPos[1]);
// b3Vector3 p = b3MakeVector3(worldPosX,worldPosY,worldPosZ);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glAlphaFunc( GL_GREATER, 1.0f );
int viewport[4]={0,0,gApp2->m_renderer->getScreenWidth(),gApp2->m_renderer->getScreenHeight()};
float posX = 450.f;
float posY = 100.f;
float winx,winy, winz;
if (!projectWorldCoordToScreen(worldPosX, worldPosY, worldPosZ,viewMat,projMat,viewport,&winx, &winy, &winz))
{
return;
}
posX = winx;
posY = gApp2->m_renderer->getScreenHeight()/2+(gApp2->m_renderer->getScreenHeight()/2)-winy;
{
//float width = 0.f;
int pos=0;
//float color[]={0.2f,0.2,0.2f,1.f};
glActiveTexture(GL_TEXTURE0);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glBindTexture(GL_TEXTURE_2D,m_data->m_largeFontTextureId);
glEnable(GL_TEXTURE_2D);//BindTexture
//float width = r.x;
//float extraSpacing = 0.;
float startX = posX;
float startY = posY-g_DefaultLargeFont->m_CharHeight*size1;
glEnable(GL_COLOR_MATERIAL);
while (txt[pos])
{
int c = txt[pos];
//r.h = g_DefaultNormalFont->m_CharHeight;
//r.w = g_DefaultNormalFont->m_CharWidth[c]+extraSpacing;
float endX = startX+g_DefaultLargeFont->m_CharWidth[c]*size1;
float endY = posY;
float currentColor[]={1.f,0.2,0.2f,1.f};
float u0 = g_DefaultLargeFont->m_CharU0[c];
float u1 = g_DefaultLargeFont->m_CharU1[c];
float v0 = g_DefaultLargeFont->m_CharV0[c];
float v1 = g_DefaultLargeFont->m_CharV1[c];
float color[4] = {currentColor[0],currentColor[1],currentColor[2],currentColor[3]};
float x0 = startX;
float x1 = endX;
float y0 = startY;
float y1 = endY;
int screenWidth = gApp2->m_renderer->getScreenWidth();
int screenHeight = gApp2->m_renderer->getScreenHeight();
float z = 2.f*winz-1.f;//*(far
/*float identity[16]={1,0,0,0,
0,1,0,0,
0,0,1,0,
0,0,0,1};
*/
PrimVertex vertexData[4] = {
PrimVertex( PrimVec4(-1.f+2.f*x0/float(screenWidth), 1.f-2.f*y0/float(screenHeight), z, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u0,v0)),
PrimVertex( PrimVec4(-1.f+2.f*x0/float(screenWidth), 1.f-2.f*y1/float(screenHeight), z, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u0,v1)),
PrimVertex(PrimVec4( -1.f+2.f*x1/float(screenWidth), 1.f-2.f*y1/float(screenHeight), z, 1.f ), PrimVec4(color[0], color[1], color[2], color[3]) ,PrimVec2(u1,v1)),
PrimVertex( PrimVec4( -1.f+2.f*x1/float(screenWidth), 1.f-2.f*y0/float(screenHeight), z, 1.f ), PrimVec4( color[0], color[1], color[2], color[3] ) ,PrimVec2(u1,v0))
};
glBegin(GL_TRIANGLES);
//use red colored text for now
glColor4f(1,0,0,1);
float scaling = 1;
glTexCoord2f(vertexData[0].uv.p[0],vertexData[0].uv.p[1]);
glVertex3d(vertexData[0].position.p[0]*scaling, vertexData[0].position.p[1]*scaling,vertexData[0].position.p[2]*scaling);
glTexCoord2f(vertexData[1].uv.p[0],vertexData[1].uv.p[1]);
glVertex3d(vertexData[1].position.p[0]*scaling, vertexData[1].position.p[1]*scaling,vertexData[1].position.p[2]*scaling);
glTexCoord2f(vertexData[2].uv.p[0],vertexData[2].uv.p[1]);
glVertex3d(vertexData[2].position.p[0]*scaling, vertexData[2].position.p[1]*scaling,vertexData[2].position.p[2]*scaling);
glTexCoord2f(vertexData[0].uv.p[0],vertexData[0].uv.p[1]);
glVertex3d(vertexData[0].position.p[0]*scaling, vertexData[0].position.p[1]*scaling,vertexData[0].position.p[2]*scaling);
glTexCoord2f(vertexData[2].uv.p[0],vertexData[2].uv.p[1]);
glVertex3d(vertexData[2].position.p[0]*scaling, vertexData[2].position.p[1]*scaling,vertexData[2].position.p[2]*scaling);
glTexCoord2f(vertexData[3].uv.p[0],vertexData[3].uv.p[1]);
glVertex3d(vertexData[3].position.p[0]*scaling, vertexData[3].position.p[1]*scaling,vertexData[3].position.p[2]*scaling);
glEnd();
startX = endX;
pos++;
}
}
glBindTexture(GL_TEXTURE_2D,0);
glDisable(GL_BLEND);
glDisable(GL_TEXTURE_2D);
restoreOpenGLState();
}
