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authorBrian Paul <brian.paul@tungstengraphics.com>2006-07-07 14:31:28 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2006-07-07 14:31:28 +0000
commit8c140c9c37575f53f90f2f44819d0169906e0c34 (patch)
tree683c3793deb999b29d5bb7b2a08335aba03a21bf /progs
parent3ae19057444927aca2a138672eff0f9b12c9046a (diff)
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remove GLUT dependency
Diffstat (limited to 'progs')
-rw-r--r--progs/osdemos/ostest1.c140
1 files changed, 133 insertions, 7 deletions
diff --git a/progs/osdemos/ostest1.c b/progs/osdemos/ostest1.c
index 61f0f3d..001e368 100644
--- a/progs/osdemos/ostest1.c
+++ b/progs/osdemos/ostest1.c
@@ -9,11 +9,12 @@
*/
#include <assert.h>
+#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "GL/osmesa.h"
-#include "GL/glut.h"
+#include "GL/glu.h"
#define WIDTH 600
@@ -23,6 +24,120 @@ static GLboolean WriteFiles = GL_FALSE;
static GLboolean Gradient = GL_FALSE;
+static void
+Sphere(float radius, int slices, int stacks)
+{
+ GLUquadric *q = gluNewQuadric();
+ gluQuadricNormals(q, GLU_SMOOTH);
+ gluSphere(q, radius, slices, stacks);
+ gluDeleteQuadric(q);
+}
+
+
+static void
+Cone(float base, float height, int slices, int stacks)
+{
+ GLUquadric *q = gluNewQuadric();
+ gluQuadricDrawStyle(q, GLU_FILL);
+ gluQuadricNormals(q, GLU_SMOOTH);
+ gluCylinder(q, base, 0.0, height, slices, stacks);
+ gluDeleteQuadric(q);
+}
+
+
+static void
+Torus(float innerRadius, float outerRadius, int sides, int rings)
+{
+ /* from GLUT... */
+ int i, j;
+ GLfloat theta, phi, theta1;
+ GLfloat cosTheta, sinTheta;
+ GLfloat cosTheta1, sinTheta1;
+ const GLfloat ringDelta = 2.0 * M_PI / rings;
+ const GLfloat sideDelta = 2.0 * M_PI / sides;
+
+ theta = 0.0;
+ cosTheta = 1.0;
+ sinTheta = 0.0;
+ for (i = rings - 1; i >= 0; i--) {
+ theta1 = theta + ringDelta;
+ cosTheta1 = cos(theta1);
+ sinTheta1 = sin(theta1);
+ glBegin(GL_QUAD_STRIP);
+ phi = 0.0;
+ for (j = sides; j >= 0; j--) {
+ GLfloat cosPhi, sinPhi, dist;
+
+ phi += sideDelta;
+ cosPhi = cos(phi);
+ sinPhi = sin(phi);
+ dist = outerRadius + innerRadius * cosPhi;
+
+ glNormal3f(cosTheta1 * cosPhi, -sinTheta1 * cosPhi, sinPhi);
+ glVertex3f(cosTheta1 * dist, -sinTheta1 * dist, innerRadius * sinPhi);
+ glNormal3f(cosTheta * cosPhi, -sinTheta * cosPhi, sinPhi);
+ glVertex3f(cosTheta * dist, -sinTheta * dist, innerRadius * sinPhi);
+ }
+ glEnd();
+ theta = theta1;
+ cosTheta = cosTheta1;
+ sinTheta = sinTheta1;
+ }
+}
+
+
+static void Cube(float size)
+{
+ size = 0.5 * size;
+
+ glBegin(GL_QUADS);
+ /* +X face */
+ glNormal3f(1, 0, 0);
+ glVertex3f(size, -size, size);
+ glVertex3f(size, -size, -size);
+ glVertex3f(size, size, -size);
+ glVertex3f(size, size, size);
+
+ /* -X face */
+ glNormal3f(-1, 0, 0);
+ glVertex3f(-size, size, size);
+ glVertex3f(-size, size, -size);
+ glVertex3f(-size, -size, -size);
+ glVertex3f(-size, -size, size);
+
+ /* +Y face */
+ glNormal3f(0, 1, 0);
+ glVertex3f(-size, size, size);
+ glVertex3f( size, size, size);
+ glVertex3f( size, size, -size);
+ glVertex3f(-size, size, -size);
+
+ /* -Y face */
+ glNormal3f(0, -1, 0);
+ glVertex3f(-size, -size, -size);
+ glVertex3f( size, -size, -size);
+ glVertex3f( size, -size, size);
+ glVertex3f(-size, -size, size);
+
+ /* +Z face */
+ glNormal3f(0, 0, 1);
+ glVertex3f(-size, -size, size);
+ glVertex3f( size, -size, size);
+ glVertex3f( size, size, size);
+ glVertex3f(-size, size, size);
+
+ /* -Z face */
+ glNormal3f(0, 0, -1);
+ glVertex3f(-size, size, -size);
+ glVertex3f( size, size, -size);
+ glVertex3f( size, -size, -size);
+ glVertex3f(-size, -size, -size);
+
+ glEnd();
+}
+
+
+
/**
* Draw red/green gradient across bottom of image.
* Read pixels to check deltas.
@@ -66,7 +181,9 @@ render_image(void)
static const GLfloat red_mat[4] = { 1.0, 0.2, 0.2, 1.0 };
static const GLfloat green_mat[4] = { 0.2, 1.0, 0.2, 1.0 };
static const GLfloat blue_mat[4] = { 0.2, 0.2, 1.0, 1.0 };
+#if 0
static const GLfloat yellow_mat[4] = { 0.8, 0.8, 0.0, 1.0 };
+#endif
static const GLfloat purple_mat[4] = { 0.8, 0.4, 0.8, 0.6 };
glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient);
@@ -106,36 +223,41 @@ render_image(void)
glTranslatef(-1.5, 0.5, 0.0);
glRotatef(90.0, 1.0, 0.0, 0.0);
glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red_mat );
- glutSolidTorus(0.275, 0.85, 20, 20);
+ Torus(0.275, 0.85, 20, 20);
glPopMatrix();
glPushMatrix();
glTranslatef(-1.5, -0.5, 0.0);
glRotatef(270.0, 1.0, 0.0, 0.0);
glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green_mat );
- glutSolidCone(1.0, 2.0, 16, 1);
+ Cone(1.0, 2.0, 16, 1);
glPopMatrix();
glPushMatrix();
- glTranslatef(0.75, 0.0, -1.0);
+ glTranslatef(0.95, 0.0, -0.8);
glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue_mat );
- glutSolidSphere(1.0, 20, 20);
+ glLineWidth(2.0);
+ glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+ Sphere(1.2, 20, 20);
+ glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glPopMatrix();
+#if 0
glPushMatrix();
glTranslatef(0.75, 0.0, 1.3);
glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, yellow_mat );
glutWireTeapot(1.0);
glPopMatrix();
+#endif
glPushMatrix();
- glTranslatef(-0.5, 0.0, 2.5);
+ glTranslatef(-0.25, 0.0, 2.5);
glRotatef(40, 0, 1, 0);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glEnable(GL_CULL_FACE);
glMaterialfv( GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, purple_mat );
- glutSolidCube(1.0);
+ Cube(1.0);
glDisable(GL_BLEND);
glDisable(GL_CULL_FACE);
glPopMatrix();
@@ -270,6 +392,8 @@ test(GLenum type, GLint bits, const char *filename)
/* Bind the buffer to the context and make it current */
if (!OSMesaMakeCurrent( ctx, buffer, type, WIDTH, HEIGHT )) {
printf("OSMesaMakeCurrent (%d bits/channel) failed!\n", bits);
+ free(buffer);
+ OSMesaDestroyContext(ctx);
return 0;
}
@@ -320,6 +444,8 @@ test(GLenum type, GLint bits, const char *filename)
OSMesaDestroyContext(ctx);
+ free(buffer);
+
return 1;
}