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authorKeith Whitwell <[email protected]>2009-03-12 17:21:26 +0000
committerKeith Whitwell <[email protected]>2009-03-12 17:21:50 +0000
commitf16da8d509e0d67eb2a697d0d566f7213d33f2bb (patch)
treeb58d1f2ae5de27d0e4ded06ea91e2380b95daa1d /progs
parent10812b079166e6d8dd414b8a0bf35b01e12bbdf0 (diff)
trivial: draw non-interleaved arrays
Diffstat (limited to 'progs')
-rw-r--r--progs/trivial/Makefile1
-rw-r--r--progs/trivial/SConscript1
-rw-r--r--progs/trivial/draw2arrays.c117
3 files changed, 119 insertions, 0 deletions
diff --git a/progs/trivial/Makefile b/progs/trivial/Makefile
index 82daae7dfd7..6e332aa728e 100644
--- a/progs/trivial/Makefile
+++ b/progs/trivial/Makefile
@@ -23,6 +23,7 @@ SOURCES = \
dlist-edgeflag.c \
dlist-degenerate.c \
drawarrays.c \
+ draw2arrays.c \
drawelements.c \
drawrange.c \
flat-clip.c \
diff --git a/progs/trivial/SConscript b/progs/trivial/SConscript
index 4694cb7adc7..4796a4d37f2 100644
--- a/progs/trivial/SConscript
+++ b/progs/trivial/SConscript
@@ -19,6 +19,7 @@ progs = [
'dlist-edgeflag',
'dlist-degenerate',
'drawarrays',
+ 'draw2arrays',
'drawelements',
'drawrange',
'flat-clip',
diff --git a/progs/trivial/draw2arrays.c b/progs/trivial/draw2arrays.c
new file mode 100644
index 00000000000..95a89981d3a
--- /dev/null
+++ b/progs/trivial/draw2arrays.c
@@ -0,0 +1,117 @@
+/* Basic VBO */
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <GL/glew.h>
+#include <GL/glut.h>
+
+GLfloat pos[][3] =
+ { { 0.9, -0.9, 0.0 },
+ { 0.9, 0.9, 0.0 },
+ { -0.9, 0.9, 0.0 },
+ { -0.9, -0.9, 0.0 } };
+
+GLubyte color[][4] =
+{ { 0x00, 0x00, 0xff, 0x00 },
+ { 0x00, 0xff, 0x00, 0x00 },
+ { 0xff, 0x00, 0x00, 0x00 },
+ { 0xff, 0xff, 0xff, 0x00 } };
+
+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 );
+
+ glVertexPointer( 3, GL_FLOAT, sizeof(pos[0]), pos );
+ glColorPointer( 4, GL_UNSIGNED_BYTE, sizeof(color[0]), color );
+
+}
+
+
+
+static void Display( void )
+{
+ glClearColor(0.3, 0.3, 0.3, 1);
+ glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+ glEnable(GL_VERTEX_PROGRAM_ARB);
+
+// glDrawArrays( GL_TRIANGLES, 0, 3 );
+ glDrawArrays( GL_TRIANGLES, 1, 3 );
+
+ glFlush();
+}
+
+
+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_SINGLE | GLUT_DEPTH );
+ glutCreateWindow(argv[0]);
+ glewInit();
+ glutReshapeFunc( Reshape );
+ glutKeyboardFunc( Key );
+ glutDisplayFunc( Display );
+ Init();
+ glutMainLoop();
+ return 0;
+}