summaryrefslogtreecommitdiffstats
path: root/progs/trivial
diff options
context:
space:
mode:
Diffstat (limited to 'progs/trivial')
-rw-r--r--progs/trivial/.gitignore1
-rw-r--r--progs/trivial/Makefile2
-rw-r--r--progs/trivial/SConscript12
-rw-r--r--progs/trivial/tri-orig.c10
-rw-r--r--progs/trivial/tri-point-line-clipped.c116
-rw-r--r--progs/trivial/vbo-tri.c131
6 files changed, 258 insertions, 14 deletions
diff --git a/progs/trivial/.gitignore b/progs/trivial/.gitignore
index 4d6e405..4317eb6 100644
--- a/progs/trivial/.gitignore
+++ b/progs/trivial/.gitignore
@@ -147,6 +147,7 @@ vbo-drawarrays
vbo-drawelements
vbo-drawrange
vbo-noninterleaved
+vbo-tri
vp-array
vp-array-int
vp-clip
diff --git a/progs/trivial/Makefile b/progs/trivial/Makefile
index 7072861..5e08d60 100644
--- a/progs/trivial/Makefile
+++ b/progs/trivial/Makefile
@@ -119,6 +119,7 @@ SOURCES = \
tri-lit-material.c \
tri-mask-tri.c \
tri-orig.c \
+ tri-point-line-clipped.c \
tri-query.c \
tri-repeat.c \
tri-scissor-tri.c \
@@ -153,6 +154,7 @@ SOURCES = \
tristrip-clip.c \
tristrip-flat.c \
tristrip.c \
+ vbo-tri.c \
vbo-drawarrays.c \
vbo-noninterleaved.c \
vbo-drawelements.c \
diff --git a/progs/trivial/SConscript b/progs/trivial/SConscript
index 9a1f357..e9ed1cb 100644
--- a/progs/trivial/SConscript
+++ b/progs/trivial/SConscript
@@ -1,11 +1,4 @@
-Import('env')
-
-if not env['GLUT']:
- Return()
-
-env = env.Clone()
-
-env.Prepend(LIBS = ['$GLUT_LIB'])
+Import('*')
progs = [
'clear-fbo-tex',
@@ -103,6 +96,7 @@ progs = [
'tri-logicop-xor',
'tri-mask-tri',
'tri-orig',
+ 'tri-point-line-clipped',
'tri-query',
'tri-repeat',
'tri-scissor-tri',
@@ -154,7 +148,7 @@ progs = [
]
for prog in progs:
- prog = env.Program(
+ prog = progs_env.Program(
target = prog,
source = prog + '.c',
)
diff --git a/progs/trivial/tri-orig.c b/progs/trivial/tri-orig.c
index d86d34c..f86ac52 100644
--- a/progs/trivial/tri-orig.c
+++ b/progs/trivial/tri-orig.c
@@ -51,7 +51,7 @@ static void Reshape(int width, int height)
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
-/* glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0); */
+ glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
glMatrixMode(GL_MODELVIEW);
}
@@ -74,11 +74,11 @@ static void Draw(void)
glBegin(GL_TRIANGLES);
glColor3f(0,0,.7);
- glVertex3f( 0.9, -0.9, -0.0);
+ glVertex3f( 0.9, -0.9, -30.0);
glColor3f(.8,0,0);
- glVertex3f( 0.9, 0.9, -0.0);
+ glVertex3f( 0.9, 0.9, -30.0);
glColor3f(0,.9,0);
- glVertex3f(-0.9, 0.0, -0.0);
+ glVertex3f(-0.9, 0.0, -30.0);
glEnd();
glFlush();
@@ -119,7 +119,7 @@ int main(int argc, char **argv)
glutInitWindowPosition(0, 0); glutInitWindowSize( 250, 250);
- type = GLUT_RGB | GLUT_ALPHA;
+ type = GLUT_RGB;
type |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
glutInitDisplayMode(type);
diff --git a/progs/trivial/tri-point-line-clipped.c b/progs/trivial/tri-point-line-clipped.c
new file mode 100644
index 0000000..f8c1015
--- /dev/null
+++ b/progs/trivial/tri-point-line-clipped.c
@@ -0,0 +1,116 @@
+/**
+ * Test frustum/user clipping w/ glPolygonMode LINE/POINT.
+ *
+ * The bottom/left and bottom/right verts are outside the frustum and clipped.
+ * The top vertex is clipped by a user clipping plane.
+ *
+ * A filled gray reference triangle is shown underneath the points/lines.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+
+
+static int win;
+
+
+static void
+ColorTri(void)
+{
+ glBegin(GL_TRIANGLES);
+ glColor3f(1, 0, 0); glVertex3f(-1.5, -0.8, 0.0);
+ glColor3f(0, 1, 0); glVertex3f( 1.5, -0.8, 0.0);
+ glColor3f(0, 0, 1); glVertex3f( 0.0, 0.9, 0.0);
+ glEnd();
+}
+
+
+static void
+GrayTri(void)
+{
+ glColor3f(0.3, 0.3, 0.3);
+ glBegin(GL_TRIANGLES);
+ glVertex3f(-1.5, -0.8, 0.0);
+ glVertex3f( 1.5, -0.8, 0.0);
+ glVertex3f( 0.0, 0.9, 0.0);
+ glEnd();
+}
+
+
+static void
+Draw(void)
+{
+ static const GLdouble plane[4] = { 0, -1.0, 0, 0.5 };
+
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ glPointSize(13.0);
+ glLineWidth(5.0);
+
+ glClipPlane(GL_CLIP_PLANE0, plane);
+ glEnable(GL_CLIP_PLANE0);
+
+ glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+ GrayTri();
+
+ glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+ ColorTri();
+
+ glPolygonMode(GL_FRONT_AND_BACK, GL_POINT);
+ ColorTri();
+
+ glutSwapBuffers();
+}
+
+
+static void Reshape(int width, int height)
+{
+ glViewport(0, 0, (GLint)width, (GLint)height);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glOrtho(-1.0, 1.0, -1.0, 1.0, -1.0, 1.0);
+ glMatrixMode(GL_MODELVIEW);
+}
+
+
+static void
+Key(unsigned char key, int x, int y)
+{
+ if (key == 27) {
+ glutDestroyWindow(win);
+ exit(0);
+ }
+ else {
+ glutPostRedisplay();
+ }
+}
+
+
+static void
+Init(void)
+{
+ fprintf(stderr, "GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
+ fprintf(stderr, "GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
+ fprintf(stderr, "GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
+ fflush(stderr);
+}
+
+
+int
+main(int argc, char **argv)
+{
+ glutInitWindowSize(300, 300);
+ glutInit(&argc, argv);
+ glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
+ win = glutCreateWindow(*argv);
+ if (!win) {
+ return 1;
+ }
+ Init();
+ glutReshapeFunc(Reshape);
+ glutKeyboardFunc(Key);
+ glutDisplayFunc(Draw);
+ glutMainLoop();
+ return 0;
+}
diff --git a/progs/trivial/vbo-tri.c b/progs/trivial/vbo-tri.c
new file mode 100644
index 0000000..d4cba14
--- /dev/null
+++ b/progs/trivial/vbo-tri.c
@@ -0,0 +1,131 @@
+/* Even simpler for many drivers than trivial/tri -- pass-through
+ * vertex shader and vertex data in a VBO.
+ */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <GL/glew.h>
+#include <GL/glut.h>
+
+
+struct {
+ GLfloat pos[4];
+ GLfloat color[4];
+} verts[] =
+{
+ { { -0.9, -0.9, 0.0, 1.0 },
+ {.8,0,0, 1},
+ },
+
+ { { 0.9, -0.9, 0.0, 1.0 },
+ { 0, .9, 0, 1 },
+ },
+
+ { { 0, 0.9, 0.0, 1.0 },
+ {0,0,.7, 1},
+ },
+};
+
+GLuint arrayObj;
+
+static void Init( void )
+{
+ GLint errno;
+ GLuint prognum;
+
+ static const char *prog1 =
+ "!!ARBvp1.0\n"
+ "MOV result.color, vertex.color;\n"
+ "MOV result.position, vertex.position;\n"
+ "END\n";
+
+
+ glGenProgramsARB(1, &prognum);
+
+ glBindProgramARB(GL_VERTEX_PROGRAM_ARB, prognum);
+ glProgramStringARB(GL_VERTEX_PROGRAM_ARB, GL_PROGRAM_FORMAT_ASCII_ARB,
+ strlen(prog1), (const GLubyte *) prog1);
+
+ assert(glIsProgramARB(prognum));
+ errno = glGetError();
+ printf("glGetError = %d\n", errno);
+ if (errno != GL_NO_ERROR)
+ {
+ GLint errorpos;
+
+ glGetIntegerv(GL_PROGRAM_ERROR_POSITION_ARB, &errorpos);
+ printf("errorpos: %d\n", errorpos);
+ printf("%s\n", (char *)glGetString(GL_PROGRAM_ERROR_STRING_ARB));
+ }
+
+
+ glEnableClientState( GL_VERTEX_ARRAY );
+ glEnableClientState( GL_COLOR_ARRAY );
+
+ glGenBuffersARB(1, &arrayObj);
+ glBindBufferARB(GL_ARRAY_BUFFER_ARB, arrayObj);
+ glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(verts), verts, GL_STATIC_DRAW_ARB);
+
+ glVertexPointer( 4, GL_FLOAT, sizeof(verts[0]), 0 );
+ glColorPointer( 4, GL_FLOAT, sizeof(verts[0]), (void *)(4*sizeof(float)) );
+}
+
+
+
+static void Display( void )
+{
+ glClearColor(0.3, 0.3, 0.3, 1);
+ glClear( GL_COLOR_BUFFER_BIT );
+
+ glEnable(GL_VERTEX_PROGRAM_NV);
+ glDrawArrays( GL_TRIANGLES, 0, 3 );
+
+ glutSwapBuffers();
+}
+
+
+static void Reshape( int width, int height )
+{
+ glViewport( 0, 0, width, height );
+ glMatrixMode( GL_PROJECTION );
+ glLoadIdentity();
+ glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 1000.0);
+ glMatrixMode( GL_MODELVIEW );
+ glLoadIdentity();
+ /*glTranslatef( 0.0, 0.0, -15.0 );*/
+}
+
+
+static void Key( unsigned char key, int x, int y )
+{
+ (void) x;
+ (void) y;
+ switch (key) {
+ case 27:
+ exit(0);
+ break;
+ }
+ glutPostRedisplay();
+}
+
+
+
+
+int main( int argc, char *argv[] )
+{
+ glutInit( &argc, argv );
+ glutInitWindowPosition( 0, 0 );
+ glutInitWindowSize( 250, 250 );
+ glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
+ glutCreateWindow(argv[0]);
+ glewInit();
+ glutReshapeFunc( Reshape );
+ glutKeyboardFunc( Key );
+ glutDisplayFunc( Display );
+ Init();
+ glutMainLoop();
+ return 0;
+}
generated by cgit v1.1 at 2024-07-06 12:35:25 +0000