tests: prim.c demo, modified for GL_EXT_provoking_vertex

2 files changed, 560 insertions, 0 deletions

diff --git a/progs/tests/Makefile b/progs/tests/Makefile
index 628ca41..b99f03c 100644
--- a/progs/tests/Makefile
+++ b/progs/tests/Makefile
@@ -65,6 +65,7 @@ SOURCES = \
 	no_s3tc.c \
 	packedpixels.c \
 	pbo.c \
+	prim.c \
 	prog_parameter.c \
 	quads.c \
 	random.c \
diff --git a/progs/tests/prim.c b/progs/tests/prim.c
new file mode 100644
index 0000000..3e006e8
--- /dev/null
+++ b/progs/tests/prim.c
@@ -0,0 +1,559 @@
+#define GL_GLEXT_PROTOTYPES
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <GL/glut.h>
+
+
+#define PIXEL_CENTER(x) ((long)(x) + 0.5)
+
+#define GAP 10
+#define ROWS 3
+#define COLS 4
+
+#define OPENGL_WIDTH 48
+#define OPENGL_HEIGHT 13
+
+
+GLenum provoking = GL_LAST_VERTEX_CONVENTION_EXT;
+GLenum rgb, doubleBuffer, windType;
+GLint windW, windH;
+
+GLenum mode1, mode2;
+GLint boxW, boxH;
+GLubyte OpenGL_bits[] = {
+   0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 
+   0x7f, 0xfb, 0xff, 0xff, 0xff, 0x01,
+   0x7f, 0xfb, 0xff, 0xff, 0xff, 0x01, 
+   0x00, 0x03, 0x00, 0x00, 0x00, 0x00,
+   0x3e, 0x8f, 0xb7, 0xf9, 0xfc, 0x01, 
+   0x63, 0xdb, 0xb0, 0x8d, 0x0d, 0x00,
+   0x63, 0xdb, 0xb7, 0x8d, 0x0d, 0x00, 
+   0x63, 0xdb, 0xb6, 0x8d, 0x0d, 0x00,
+   0x63, 0x8f, 0xf3, 0xcc, 0x0d, 0x00, 
+   0x63, 0x00, 0x00, 0x0c, 0x4c, 0x0a,
+   0x63, 0x00, 0x00, 0x0c, 0x4c, 0x0e, 
+   0x63, 0x00, 0x00, 0x8c, 0xed, 0x0e,
+   0x3e, 0x00, 0x00, 0xf8, 0x0c, 0x00, 
+};
+
+
+#include "tkmap.c"
+
+static void Init(void)
+{
+
+    mode1 = GL_TRUE;
+    mode2 = GL_TRUE;
+}
+
+static void Reshape(int width, int height)
+{
+
+    windW = (GLint)width;
+    windH = (GLint)height;
+}
+
+static void RotateColorMask(void)
+{
+    static GLint rotation = 0;
+    
+    rotation = (rotation + 1) & 0x3;
+    switch (rotation) {
+      case 0:
+	glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+	glIndexMask( 0xff );
+	break;
+      case 1:
+	glColorMask(GL_FALSE, GL_TRUE, GL_TRUE, GL_TRUE);
+	glIndexMask(0xFE);
+	break;
+      case 2:
+	glColorMask(GL_TRUE, GL_FALSE, GL_TRUE, GL_TRUE);
+	glIndexMask(0xFD);
+	break;
+      case 3:
+	glColorMask(GL_TRUE, GL_TRUE, GL_FALSE, GL_TRUE);
+	glIndexMask(0xFB);
+	break;
+    }
+}
+
+static void Key(unsigned char key, int x, int y)
+{
+
+    switch (key) {
+      case 27:
+	exit(1);
+      case '1':
+	mode1 = !mode1;
+	break;
+      case '2':
+	mode2 = !mode2;
+	break;
+      case '3':
+	RotateColorMask();
+	break;
+      case 'p':
+         if (provoking == GL_FIRST_VERTEX_CONVENTION_EXT) {
+            printf("provoke last\n");
+            provoking = GL_LAST_VERTEX_CONVENTION_EXT;
+         }
+         else {
+            printf("provoke first\n");
+            provoking = GL_FIRST_VERTEX_CONVENTION_EXT;
+         }
+         glProvokingVertexEXT(provoking);
+         break;
+      default:
+	return;
+    }
+
+    glutPostRedisplay();
+}
+
+static void Viewport(GLint row, GLint column)
+{
+    GLint x, y;
+
+    boxW = (windW - (COLS + 1) * GAP) / COLS;
+    boxH = (windH - (ROWS + 1) * GAP) / ROWS;
+
+    x = GAP + column * (boxW + GAP);
+    y = GAP + row * (boxH + GAP);
+
+    glViewport(x, y, boxW, boxH);
+
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    glOrtho(-boxW/2, boxW/2, -boxH/2, boxH/2, 0.0, 1.0);
+    glMatrixMode(GL_MODELVIEW);
+
+    glEnable(GL_SCISSOR_TEST);
+    glScissor(x, y, boxW, boxH);
+}
+
+static void Point(void)
+{
+    GLint i;
+
+    glBegin(GL_POINTS);
+	SetColor(COLOR_WHITE);
+	glVertex2i(0, 0);
+	for (i = 1; i < 8; i++) {
+	    GLint j = i * 2;
+	    SetColor(COLOR_BLACK+i);
+	    glVertex2i(-j, -j);
+	    glVertex2i(-j, 0);
+	    glVertex2i(-j, j);
+	    glVertex2i(0, j);
+	    glVertex2i(j, j);
+	    glVertex2i(j, 0);
+	    glVertex2i(j, -j);
+	    glVertex2i(0, -j);
+	}
+    glEnd();
+}
+
+static void Lines(void)
+{
+    GLint i;
+
+    glPushMatrix();
+
+    glTranslatef(-12, 0, 0);
+    for (i = 1; i < 8; i++) {
+	glBegin(GL_LINES);
+	    SetColor(COLOR_BLACK+i);
+	    glVertex2i(-boxW/4, -boxH/4);
+	    SetColor(COLOR_BLACK+i+1);
+	    glVertex2i(boxW/4, boxH/4);
+	glEnd();
+	glTranslatef(4, 0, 0);
+    }
+
+    glPopMatrix();
+
+    glBegin(GL_LINES);
+	glVertex2i(0, 0);
+    glEnd();
+}
+
+static void LineStrip(void)
+{
+
+    glBegin(GL_LINE_STRIP);
+	SetColor(COLOR_RED);
+	glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4));
+	SetColor(COLOR_GREEN);
+	glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4));
+	SetColor(COLOR_BLUE);
+	glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4));
+	SetColor(COLOR_WHITE);
+	glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(-boxH/4));
+    glEnd();
+
+    glBegin(GL_LINE_STRIP);
+	glVertex2i(0, 0);
+    glEnd();
+}
+
+static void LineLoop(void)
+{
+
+    glBegin(GL_LINE_LOOP);
+	SetColor(COLOR_RED);
+	glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(-boxH/4));
+	SetColor(COLOR_GREEN);
+	glVertex2f(PIXEL_CENTER(-boxW/4), PIXEL_CENTER(boxH/4));
+	SetColor(COLOR_BLUE);
+	glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(boxH/4));
+	SetColor(COLOR_WHITE);
+	glVertex2f(PIXEL_CENTER(boxW/4), PIXEL_CENTER(-boxH/4));
+    glEnd();
+
+    glEnable(GL_LOGIC_OP);
+    glLogicOp(GL_XOR);
+
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_ONE, GL_ONE);
+
+    SetColor(COLOR_MAGENTA);
+    glBegin(GL_LINE_LOOP);
+	glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(-boxH/8));
+	glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(boxH/8));
+    glEnd();
+    glBegin(GL_LINE_LOOP);
+	glVertex2f(PIXEL_CENTER(-boxW/8), PIXEL_CENTER(boxH/8+5));
+	glVertex2f(PIXEL_CENTER(boxW/8), PIXEL_CENTER(boxH/8+5));
+    glEnd();
+    glDisable(GL_LOGIC_OP);
+    glDisable(GL_BLEND);
+
+    SetColor(COLOR_GREEN);
+    glBegin(GL_POINTS);
+	glVertex2i(0, 0);
+    glEnd();
+
+    glBegin(GL_LINE_LOOP);
+	glVertex2i(0, 0);
+    glEnd();
+}
+
+static void Bitmap(void)
+{
+
+    glBegin(GL_LINES);
+	SetColor(COLOR_GREEN);
+	glVertex2i(-boxW/2, 0);
+	glVertex2i(boxW/2, 0);
+	glVertex2i(0, -boxH/2);
+	glVertex2i(0, boxH/2);
+	SetColor(COLOR_RED);
+	glVertex2i(0, -3);
+	glVertex2i(0, -3+OPENGL_HEIGHT);
+	SetColor(COLOR_BLUE);
+	glVertex2i(0, -3);
+	glVertex2i(OPENGL_WIDTH, -3);
+    glEnd();
+
+    SetColor(COLOR_GREEN);
+
+    glPixelStorei(GL_UNPACK_LSB_FIRST, GL_TRUE);
+    glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+
+    glRasterPos2i(0, 0);
+    glBitmap(OPENGL_WIDTH, OPENGL_HEIGHT, 0, 3, 0.0, 0.0, OpenGL_bits);
+}
+
+static void Triangles(void)
+{
+
+    glBegin(GL_TRIANGLES);
+	SetColor(COLOR_GREEN);
+	glVertex2i(-boxW/4, -boxH/4);
+	SetColor(COLOR_RED);
+	glVertex2i(-boxW/8, -boxH/16);
+	SetColor(COLOR_BLUE);
+	glVertex2i(boxW/8, -boxH/16);
+
+	SetColor(COLOR_GREEN);
+	glVertex2i(-boxW/4, boxH/4);
+	SetColor(COLOR_RED);
+	glVertex2i(-boxW/8, boxH/16);
+	SetColor(COLOR_BLUE);
+	glVertex2i(boxW/8, boxH/16);
+    glEnd();
+
+    glBegin(GL_TRIANGLES);
+	glVertex2i(0, 0);
+	glVertex2i(-100, 100);
+    glEnd();
+}
+
+static void TriangleStrip(void)
+{
+
+    glBegin(GL_TRIANGLE_STRIP);
+	SetColor(COLOR_GREEN);
+	glVertex2i(-boxW/4, -boxH/4);
+	SetColor(COLOR_RED);
+	glVertex2i(-boxW/4, boxH/4);
+	SetColor(COLOR_BLUE);
+	glVertex2i(0, -boxH/4);
+	SetColor(COLOR_WHITE);
+	glVertex2i(0, boxH/4);
+	SetColor(COLOR_CYAN);
+	glVertex2i(boxW/4, -boxH/4);
+	SetColor(COLOR_YELLOW);
+	glVertex2i(boxW/4, boxH/4);
+    glEnd();
+
+    glBegin(GL_TRIANGLE_STRIP);
+	glVertex2i(0, 0);
+	glVertex2i(-100, 100);
+    glEnd();
+}
+
+static void TriangleFan(void)
+{
+    GLint vx[8][2];
+    GLint x0, y0, x1, y1, x2, y2, x3, y3;
+    GLint i;
+
+    y0 = -boxH/4;
+    y1 = y0 + boxH/2/3;
+    y2 = y1 + boxH/2/3;
+    y3 = boxH/4;
+    x0 = -boxW/4;
+    x1 = x0 + boxW/2/3;
+    x2 = x1 + boxW/2/3;
+    x3 = boxW/4;
+
+    vx[0][0] = x0; vx[0][1] = y1;
+    vx[1][0] = x0; vx[1][1] = y2;
+    vx[2][0] = x1; vx[2][1] = y3;
+    vx[3][0] = x2; vx[3][1] = y3;
+    vx[4][0] = x3; vx[4][1] = y2;
+    vx[5][0] = x3; vx[5][1] = y1;
+    vx[6][0] = x2; vx[6][1] = y0;
+    vx[7][0] = x1; vx[7][1] = y0;
+
+    glBegin(GL_TRIANGLE_FAN);
+	SetColor(COLOR_WHITE);
+	glVertex2i(0, 0);
+	for (i = 0; i < 8; i++) {
+	    SetColor(COLOR_WHITE-i);
+	    glVertex2iv(vx[i]);
+	}
+    glEnd();
+
+    glBegin(GL_TRIANGLE_FAN);
+	glVertex2i(0, 0);
+	glVertex2i(-100, 100);
+    glEnd();
+}
+
+static void Rect(void)
+{
+
+    SetColor(COLOR_GREEN);
+    glRecti(-boxW/4, -boxH/4, boxW/4, boxH/4);
+}
+
+static void PolygonFunc(void)
+{
+    GLint vx[8][2];
+    GLint x0, y0, x1, y1, x2, y2, x3, y3;
+    GLint i;
+
+    y0 = -boxH/4;
+    y1 = y0 + boxH/2/3;
+    y2 = y1 + boxH/2/3;
+    y3 = boxH/4;
+    x0 = -boxW/4;
+    x1 = x0 + boxW/2/3;
+    x2 = x1 + boxW/2/3;
+    x3 = boxW/4;
+
+    vx[0][0] = x0; vx[0][1] = y1;
+    vx[1][0] = x0; vx[1][1] = y2;
+    vx[2][0] = x1; vx[2][1] = y3;
+    vx[3][0] = x2; vx[3][1] = y3;
+    vx[4][0] = x3; vx[4][1] = y2;
+    vx[5][0] = x3; vx[5][1] = y1;
+    vx[6][0] = x2; vx[6][1] = y0;
+    vx[7][0] = x1; vx[7][1] = y0;
+
+    glBegin(GL_POLYGON);
+	for (i = 0; i < 8; i++) {
+	    SetColor(COLOR_WHITE-i);
+	    glVertex2iv(vx[i]);
+	}
+    glEnd();
+
+    glBegin(GL_POLYGON);
+	glVertex2i(0, 0);
+	glVertex2i(100, 100);
+    glEnd();
+}
+
+static void Quads(void)
+{
+
+    glBegin(GL_QUADS);
+	SetColor(COLOR_GREEN);
+	glVertex2i(-boxW/4, -boxH/4);
+	SetColor(COLOR_RED);
+	glVertex2i(-boxW/8, -boxH/16);
+	SetColor(COLOR_BLUE);
+	glVertex2i(boxW/8, -boxH/16);
+	SetColor(COLOR_WHITE);
+	glVertex2i(boxW/4, -boxH/4);
+
+	SetColor(COLOR_GREEN);
+	glVertex2i(-boxW/4, boxH/4);
+	SetColor(COLOR_RED);
+	glVertex2i(-boxW/8, boxH/16);
+	SetColor(COLOR_BLUE);
+	glVertex2i(boxW/8, boxH/16);
+	SetColor(COLOR_WHITE);
+	glVertex2i(boxW/4, boxH/4);
+    glEnd();
+
+    glBegin(GL_QUADS);
+	glVertex2i(0, 0);
+	glVertex2i(100, 100);
+	glVertex2i(-100, 100);
+    glEnd();
+}
+
+static void QuadStrip(void)
+{
+
+    glBegin(GL_QUAD_STRIP);
+	SetColor(COLOR_GREEN);
+	glVertex2i(-boxW/4, -boxH/4);
+	SetColor(COLOR_RED);
+	glVertex2i(-boxW/4, boxH/4);
+	SetColor(COLOR_BLUE);
+	glVertex2i(0, -boxH/4);
+	SetColor(COLOR_WHITE);
+	glVertex2i(0, boxH/4);
+	SetColor(COLOR_CYAN);
+	glVertex2i(boxW/4, -boxH/4);
+	SetColor(COLOR_YELLOW);
+	glVertex2i(boxW/4, boxH/4);
+    glEnd();
+
+    glBegin(GL_QUAD_STRIP);
+	glVertex2i(0, 0);
+	glVertex2i(100, 100);
+	glVertex2i(-100, 100);
+    glEnd();
+}
+
+static void Draw(void)
+{
+
+    glViewport(0, 0, windW, windH);
+    glDisable(GL_SCISSOR_TEST);
+
+    glPushAttrib(GL_COLOR_BUFFER_BIT);
+
+    glColorMask(1, 1, 1, 1);
+    glIndexMask(~0);
+
+    glClearColor(0.0, 0.0, 0.0, 0.0);
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    glPopAttrib();
+
+    if (mode1) {
+	glShadeModel(GL_SMOOTH);
+    } else {
+	glShadeModel(GL_FLAT);
+    }
+
+    if (mode2) {
+	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+    } else {
+	glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+    }
+
+    Viewport(0, 0); Point();
+    Viewport(0, 1); Lines();
+    Viewport(0, 2); LineStrip();
+    Viewport(0, 3); LineLoop();
+
+    Viewport(1, 0); Bitmap();
+    Viewport(1, 1); TriangleFan();
+    Viewport(1, 2); Triangles();
+    Viewport(1, 3); TriangleStrip();
+
+    Viewport(2, 0); Rect();
+    Viewport(2, 1); PolygonFunc();
+    Viewport(2, 2); Quads();
+    Viewport(2, 3); QuadStrip();
+
+    glFlush();
+
+    if (doubleBuffer) {
+	glutSwapBuffers();
+    }
+}
+
+static GLenum Args(int argc, char **argv)
+{
+    GLint i;
+
+    rgb = GL_TRUE;
+    doubleBuffer = GL_FALSE;
+
+    for (i = 1; i < argc; i++) {
+	if (strcmp(argv[i], "-ci") == 0) {
+	    rgb = GL_FALSE;
+	} else if (strcmp(argv[i], "-rgb") == 0) {
+	    rgb = GL_TRUE;
+	} else if (strcmp(argv[i], "-sb") == 0) {
+	    doubleBuffer = GL_FALSE;
+	} else if (strcmp(argv[i], "-db") == 0) {
+	    doubleBuffer = GL_TRUE;
+	} else {
+	    printf("%s (Bad option).\n", argv[i]);
+	    return GL_FALSE;
+	}
+    }
+    return GL_TRUE;
+}
+
+int main(int argc, char **argv)
+{
+    glutInit(&argc, argv);
+
+    if (Args(argc, argv) == GL_FALSE) {
+	exit(1);
+    }
+
+    windW = 600;
+    windH = 300;
+    glutInitWindowPosition(0, 0); glutInitWindowSize( windW, windH);
+
+    windType = (rgb) ? GLUT_RGB : GLUT_INDEX;
+    windType |= (doubleBuffer) ? GLUT_DOUBLE : GLUT_SINGLE;
+    glutInitDisplayMode(windType);
+
+    if (glutCreateWindow("Primitive Test") == GL_FALSE) {
+	exit(1);
+    }
+
+    InitMap();
+
+    Init();
+
+    glutReshapeFunc(Reshape);
+    glutKeyboardFunc(Key);
+    glutDisplayFunc(Draw);
+    glutMainLoop();
+	return 0;
+}