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Added logic to use GL_TEXTURE_RECTANGLE instead of GL_TEXTURE_2D

This commit is contained in:
Matthew Budd 2020-06-28 10:11:03 -04:00
parent 59462545ca
commit 970afc2bea
1 changed files with 38 additions and 20 deletions
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58
src/drivers/Qt/GameViewer.cpp
View File

@ -64,7 +64,8 @@ void gameView_t::initializeGL(void)
printf("GL Init!\n");
glEnable(GL_TEXTURE_2D);
//glEnable(GL_TEXTURE_2D);
glEnable(GL_TEXTURE_RECTANGLE);
if ( gltexture )
{
@ -76,12 +77,19 @@ void gameView_t::initializeGL(void)
}
printf("Linear Interpolation on GL Texture: %s \n", ipolate ? "Enabled" : "Disabled");
glBindTexture(GL_TEXTURE_2D, gltexture);
//glBindTexture(GL_TEXTURE_2D, gltexture);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,ipolate?GL_LINEAR:GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,ipolate?GL_LINEAR:GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP);
//glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,ipolate?GL_LINEAR:GL_NEAREST);
//glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,ipolate?GL_LINEAR:GL_NEAREST);
//glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP);
//glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP);
glBindTexture(GL_TEXTURE_RECTANGLE, gltexture);
glTexParameteri(GL_TEXTURE_RECTANGLE,GL_TEXTURE_MAG_FILTER,ipolate?GL_LINEAR:GL_NEAREST);
glTexParameteri(GL_TEXTURE_RECTANGLE,GL_TEXTURE_MIN_FILTER,ipolate?GL_LINEAR:GL_NEAREST);
glTexParameteri(GL_TEXTURE_RECTANGLE,GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_RECTANGLE,GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE);
}
void gameView_t::resizeGL(int w, int h)
@ -124,35 +132,45 @@ void gameView_t::paintGL(void)
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glOrtho( -1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
//glOrtho( -1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
glOrtho( 0.0, rw, 0.0, rh, -1.0, 1.0);
glDisable(GL_DEPTH_TEST);
glClearColor( 0.0, 0.0f, 0.0f, 0.0f); // Background color to black.
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glEnable(GL_LINE_SMOOTH);
glEnable(GL_TEXTURE_2D);
//glEnable(GL_LINE_SMOOTH);
//glEnable(GL_TEXTURE_2D);
glEnable(GL_TEXTURE_RECTANGLE);
//glBindTexture(GL_TEXTURE_2D, gltexture);
glBindTexture(GL_TEXTURE_2D, gltexture);
glBindTexture(GL_TEXTURE_RECTANGLE, gltexture);
//print_pixbuf();
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0,
//glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 256, 256, 0,
// GL_RGBA, GL_UNSIGNED_BYTE, gl_shm->pixbuf );
glTexImage2D(GL_TEXTURE_RECTANGLE, 0, GL_RGBA8, 256, 256, 0,
GL_RGBA, GL_UNSIGNED_BYTE, gl_shm->pixbuf );
glBegin(GL_QUADS);
glTexCoord2f(1.0f*l/256, 1.0f*b/256); // Bottom left of picture.
glVertex2f(-1.0f, -1.0f); // Bottom left of target.
//glTexCoord2f(1.0f*l/256, 1.0f*b/256); // Bottom left of picture.
//glVertex2f(-1.0f, -1.0f); // Bottom left of target.
glTexCoord2f( l, b); // Bottom left of picture.
glVertex2f( 0.0, 0.0f); // Bottom left of target.
glTexCoord2f(1.0f*r/256, 1.0f*b/256);// Bottom right of picture.
glVertex2f( 1.0f, -1.0f); // Bottom right of target.
//glTexCoord2f(1.0f*r/256, 1.0f*b/256);// Bottom right of picture.
glTexCoord2f(r, b);// Bottom right of picture.
glVertex2f( rw, 0.0f); // Bottom right of target.
glTexCoord2f(1.0f*r/256, 1.0f*t/256); // Top right of our picture.
glVertex2f( 1.0f, 1.0f); // Top right of target.
//glTexCoord2f(1.0f*r/256, 1.0f*t/256); // Top right of our picture.
glTexCoord2f(r, t); // Top right of our picture.
glVertex2f( rw, rh); // Top right of target.
glTexCoord2f(1.0f*l/256, 1.0f*t/256); // Top left of our picture.
glVertex2f(-1.0f, 1.0f); // Top left of target.
//glTexCoord2f(1.0f*l/256, 1.0f*t/256); // Top left of our picture.
glTexCoord2f(l, t); // Top left of our picture.
glVertex2f( 0.0f, rh); // Top left of target.
glEnd();
glDisable(GL_TEXTURE_2D);
//glDisable(GL_TEXTURE_2D);
glDisable(GL_TEXTURE_RECTANGLE);
//glColor4f( 1.0, 1.0, 1.0, 1.0 );
//glLineWidth(5.0);