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-rw-r--r--progs/vpglsl/psiz-imm.glsl6
-rw-r--r--progs/vpglsl/psiz-mul.glsl6
-rw-r--r--progs/vpglsl/vp-tris.c58
3 files changed, 64 insertions, 6 deletions
diff --git a/progs/vpglsl/psiz-imm.glsl b/progs/vpglsl/psiz-imm.glsl
new file mode 100644
index 0000000000..101d314d58
--- /dev/null
+++ b/progs/vpglsl/psiz-imm.glsl
@@ -0,0 +1,6 @@
+
+void main() {
+ gl_FrontColor = gl_Color;
+ gl_PointSize = 2.0;
+ gl_Position = gl_Vertex;
+}
diff --git a/progs/vpglsl/psiz-mul.glsl b/progs/vpglsl/psiz-mul.glsl
new file mode 100644
index 0000000000..77f4a46b52
--- /dev/null
+++ b/progs/vpglsl/psiz-mul.glsl
@@ -0,0 +1,6 @@
+
+void main() {
+ gl_FrontColor = gl_Color;
+ gl_PointSize = 10 * gl_Color.x;
+ gl_Position = gl_Vertex;
+}
diff --git a/progs/vpglsl/vp-tris.c b/progs/vpglsl/vp-tris.c
index 9ae410bf98..b2b0508091 100644
--- a/progs/vpglsl/vp-tris.c
+++ b/progs/vpglsl/vp-tris.c
@@ -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 );