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progs/vpglsl: add similar support for point rendering as progs/vp

This commit is contained in:
Keith Whitwell 2009-05-14 15:57:27 +01:00 committed by José Fonseca
parent f989390af6
commit 97f5953ced
3 changed files with 64 additions and 6 deletions
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6
progs/vpglsl/psiz-imm.glsl Normal file
View File

@ -0,0 +1,6 @@
void main() {
gl_FrontColor = gl_Color;
gl_PointSize = 2.0;
gl_Position = gl_Vertex;
}

6
progs/vpglsl/psiz-mul.glsl Normal file
View File

@ -0,0 +1,6 @@
void main() {
gl_FrontColor = gl_Color;
gl_PointSize = 10 * gl_Color.x;
gl_Position = gl_Vertex;
}

58
progs/vpglsl/vp-tris.c
View File

@ -10,6 +10,10 @@
static const char *filename = NULL;
static GLuint nr_steps = 4;
static GLuint prim = GL_TRIANGLES;
static GLfloat psz = 1.0;
static GLboolean pointsmooth = 0;
static GLboolean program_point_size = 0;
static GLuint fragShader;
static GLuint vertShader;
@ -229,6 +233,14 @@ static void subdiv( union vert *v0,
}
}
static void enable( GLenum value, GLboolean flag )
{
if (flag)
glEnable(value);
else
glDisable(value);
}
/** Assignment */
#define ASSIGN_3V( V, V0, V1, V2 ) \
do { \
@ -241,10 +253,13 @@ static void Display( void )
{
glClearColor(0.3, 0.3, 0.3, 1);
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glPointSize(psz);
glUseProgram(program);
enable( GL_POINT_SMOOTH, pointsmooth );
enable( GL_VERTEX_PROGRAM_POINT_SIZE_ARB, program_point_size );
glBegin(GL_TRIANGLES);
glBegin(prim);
{
@ -291,10 +306,41 @@ static void Key( unsigned char key, int x, int y )
(void) x;
(void) y;
switch (key) {
case 27:
CleanUp();
exit(0);
break;
case 'p':
prim = GL_POINTS;
break;
case 't':
prim = GL_TRIANGLES;
break;
case 's':
psz += .5;
break;
case 'S':
if (psz > .5)
psz -= .5;
break;
case 'm':
pointsmooth = !pointsmooth;
break;
case 'z':
program_point_size = !program_point_size;
break;
case '+':
nr_steps++;
break;
case '-':
if (nr_steps)
nr_steps--;
break;
case ' ':
psz = 1.0;
prim = GL_TRIANGLES;
nr_steps = 4;
break;
case 27:
CleanUp();
exit(0);
break;
}
glutPostRedisplay();
}
@ -305,7 +351,7 @@ int main( int argc, char *argv[] )
glutInitWindowPosition( 0, 0 );
glutInitWindowSize( 250, 250 );
glutInitDisplayMode( GLUT_RGB | GLUT_SINGLE | GLUT_DEPTH );
glutCreateWindow(argv[0]);
glutCreateWindow(argv[argc-1]);
glewInit();
glutReshapeFunc( Reshape );
glutKeyboardFunc( Key );