-screen/gears
-screen/tri
bindtex
drawtex
es1_info
+gears
msaa
pbuffer
render_tex
EGLUT_DIR = $(TOP)/progs/egl/eglut
EGLUT_DEMOS = \
+ gears \
tri
EGLUT_X11_DEMOS := $(addsuffix _x11,$(EGLUT_DEMOS))
--- /dev/null
+/*
+ * Copyright (C) 2009 Chia-I Wu <olv@0xlab.org>
+ *
+ * Based on eglgears by
+ * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <assert.h>
+
+#include <GLES/gl.h>
+#include "eglut.h"
+
+#ifndef M_PI
+#define M_PI 3.14159265
+#endif
+
+
+struct gear {
+ GLuint vbo;
+ GLfloat *vertices;
+ GLsizei stride;
+
+ GLint num_teeth;
+};
+
+static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
+static struct gear gears[3];
+static GLfloat angle = 0.0;
+
+/*
+ * Initialize a gear wheel.
+ *
+ * Input: gear - gear to initialize
+ * inner_radius - radius of hole at center
+ * outer_radius - radius at center of teeth
+ * width - width of gear
+ * teeth - number of teeth
+ * tooth_depth - depth of tooth
+ */
+static void
+init_gear(struct gear *gear, GLfloat inner_radius, GLfloat outer_radius,
+ GLfloat width, GLint teeth, GLfloat tooth_depth)
+{
+ GLfloat r0, r1, r2;
+ GLfloat a0, da;
+ GLint verts_per_tooth, total_verts, total_size;
+ GLint count, i;
+ GLfloat *verts;
+
+ r0 = inner_radius;
+ r1 = outer_radius - tooth_depth / 2.0;
+ r2 = outer_radius + tooth_depth / 2.0;
+
+ a0 = 2.0 * M_PI / teeth;
+ da = a0 / 4.0;
+
+ gear->vbo = 0;
+ gear->vertices = NULL;
+ gear->stride = sizeof(GLfloat) * 6; /* XYZ + normal */
+ gear->num_teeth = teeth;
+
+ verts_per_tooth = 10 + 4;
+ total_verts = teeth * verts_per_tooth;
+ total_size = total_verts * gear->stride;
+
+ verts = malloc(total_size);
+ if (!verts) {
+ printf("failed to allocate vertices\n");
+ return;
+ }
+
+#define GEAR_VERT(r, n, sign) \
+ do { \
+ verts[count * 6 + 0] = (r) * vx[n]; \
+ verts[count * 6 + 1] = (r) * vy[n]; \
+ verts[count * 6 + 2] = (sign) * width * 0.5; \
+ verts[count * 6 + 3] = normal[0]; \
+ verts[count * 6 + 4] = normal[1]; \
+ verts[count * 6 + 5] = normal[2]; \
+ count++; \
+ } while (0)
+
+ count = 0;
+ for (i = 0; i < teeth; i++) {
+ GLfloat normal[3];
+ GLfloat vx[5], vy[5];
+ GLfloat u, v;
+
+ normal[0] = 0.0;
+ normal[1] = 0.0;
+ normal[2] = 0.0;
+
+ vx[0] = cos(i * a0 + 0 * da);
+ vy[0] = sin(i * a0 + 0 * da);
+ vx[1] = cos(i * a0 + 1 * da);
+ vy[1] = sin(i * a0 + 1 * da);
+ vx[2] = cos(i * a0 + 2 * da);
+ vy[2] = sin(i * a0 + 2 * da);
+ vx[3] = cos(i * a0 + 3 * da);
+ vy[3] = sin(i * a0 + 3 * da);
+ vx[4] = cos(i * a0 + 4 * da);
+ vy[4] = sin(i * a0 + 4 * da);
+
+ /* outward faces of a tooth, 10 verts */
+ normal[0] = vx[0];
+ normal[1] = vy[0];
+ GEAR_VERT(r1, 0, 1);
+ GEAR_VERT(r1, 0, -1);
+
+ u = r2 * vx[1] - r1 * vx[0];
+ v = r2 * vy[1] - r1 * vy[0];
+ normal[0] = v;
+ normal[1] = -u;
+ GEAR_VERT(r2, 1, 1);
+ GEAR_VERT(r2, 1, -1);
+
+ normal[0] = vx[0];
+ normal[1] = vy[0];
+ GEAR_VERT(r2, 2, 1);
+ GEAR_VERT(r2, 2, -1);
+
+ u = r1 * vx[3] - r2 * vx[2];
+ v = r1 * vy[3] - r2 * vy[2];
+ normal[0] = v;
+ normal[1] = -u;
+ GEAR_VERT(r1, 3, 1);
+ GEAR_VERT(r1, 3, -1);
+
+ normal[0] = vx[0];
+ normal[1] = vy[0];
+ GEAR_VERT(r1, 4, 1);
+ GEAR_VERT(r1, 4, -1);
+
+ /* inside radius cylinder, 4 verts */
+ normal[0] = -vx[4];
+ normal[1] = -vy[4];
+ GEAR_VERT(r0, 4, 1);
+ GEAR_VERT(r0, 4, -1);
+
+ normal[0] = -vx[0];
+ normal[1] = -vy[0];
+ GEAR_VERT(r0, 0, 1);
+ GEAR_VERT(r0, 0, -1);
+
+ assert(count % verts_per_tooth == 0);
+ }
+ assert(count == total_verts);
+#undef GEAR_VERT
+
+ gear->vertices = verts;
+
+ /* setup VBO */
+ glGenBuffers(1, &gear->vbo);
+ if (gear->vbo) {
+ glBindBuffer(GL_ARRAY_BUFFER, gear->vbo);
+ glBufferData(GL_ARRAY_BUFFER, total_size, verts, GL_STATIC_DRAW);
+ }
+}
+
+
+static void
+draw_gear(const struct gear *gear)
+{
+ GLint i;
+
+ if (!gear->vbo && !gear->vertices) {
+ printf("nothing to be drawn\n");
+ return;
+ }
+
+ if (gear->vbo) {
+ glBindBuffer(GL_ARRAY_BUFFER, gear->vbo);
+ glVertexPointer(3, GL_FLOAT, gear->stride, (const GLvoid *) 0);
+ glNormalPointer(GL_FLOAT, gear->stride, (const GLvoid *) (sizeof(GLfloat) * 3));
+ } else {
+ glBindBuffer(GL_ARRAY_BUFFER, 0);
+ glVertexPointer(3, GL_FLOAT, gear->stride, gear->vertices);
+ glNormalPointer(GL_FLOAT, gear->stride, gear->vertices + 3);
+ }
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+
+ for (i = 0; i < gear->num_teeth; i++) {
+ const GLint base = (10 + 4) * i;
+ GLushort indices[7];
+
+ glShadeModel(GL_FLAT);
+
+ /* front face */
+ indices[0] = base + 12;
+ indices[1] = base + 0;
+ indices[2] = base + 2;
+ indices[3] = base + 4;
+ indices[4] = base + 6;
+ indices[5] = base + 8;
+ indices[6] = base + 10;
+
+ glNormal3f(0.0, 0.0, 1.0);
+ glDrawElements(GL_TRIANGLE_FAN, 7, GL_UNSIGNED_SHORT, indices);
+
+ /* back face */
+ indices[0] = base + 13;
+ indices[1] = base + 11;
+ indices[2] = base + 9;
+ indices[3] = base + 7;
+ indices[4] = base + 5;
+ indices[5] = base + 3;
+ indices[6] = base + 1;
+
+ glNormal3f(0.0, 0.0, -1.0);
+ glDrawElements(GL_TRIANGLE_FAN, 7, GL_UNSIGNED_SHORT, indices);
+
+ glEnableClientState(GL_NORMAL_ARRAY);
+
+ /* outward face of a tooth */
+ glDrawArrays(GL_TRIANGLE_STRIP, base, 10);
+
+ /* inside radius cylinder */
+ glShadeModel(GL_SMOOTH);
+ glDrawArrays(GL_TRIANGLE_STRIP, base + 10, 4);
+
+ glDisableClientState(GL_NORMAL_ARRAY);
+ }
+
+ glDisableClientState(GL_VERTEX_ARRAY);
+}
+
+
+static void
+gears_draw(void)
+{
+ static const GLfloat red[4] = { 0.8, 0.1, 0.0, 1.0 };
+ static const GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 };
+ static const GLfloat blue[4] = { 0.2, 0.2, 1.0, 1.0 };
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+ glPushMatrix();
+ glRotatef(view_rotx, 1.0, 0.0, 0.0);
+ glRotatef(view_roty, 0.0, 1.0, 0.0);
+ glRotatef(view_rotz, 0.0, 0.0, 1.0);
+
+ glPushMatrix();
+ glTranslatef(-3.0, -2.0, 0.0);
+ glRotatef(angle, 0.0, 0.0, 1.0);
+
+ glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red);
+ draw_gear(&gears[0]);
+
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslatef(3.1, -2.0, 0.0);
+ glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
+
+ glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green);
+ draw_gear(&gears[1]);
+
+ glPopMatrix();
+
+ glPushMatrix();
+ glTranslatef(-3.1, 4.2, 0.0);
+ glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
+
+ glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue);
+ draw_gear(&gears[2]);
+
+ glPopMatrix();
+
+ glPopMatrix();
+}
+
+
+static void gears_fini(void)
+{
+ GLint i;
+ for (i = 0; i < 3; i++) {
+ struct gear *gear = &gears[i];
+ if (gear->vbo) {
+ glDeleteBuffers(1, &gear->vbo);
+ gear->vbo = 0;
+ }
+ if (gear->vertices) {
+ free(gear->vertices);
+ gear->vertices = NULL;
+ }
+ }
+}
+
+
+static void gears_init(void)
+{
+ static const GLfloat pos[4] = { 5.0, 5.0, 10.0, 0.0 };
+
+ glLightfv(GL_LIGHT0, GL_POSITION, pos);
+ glEnable(GL_CULL_FACE);
+ glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHT0);
+ glEnable(GL_DEPTH_TEST);
+ glEnable(GL_NORMALIZE);
+
+ init_gear(&gears[0], 1.0, 4.0, 1.0, 20, 0.7);
+ init_gear(&gears[1], 0.5, 2.0, 2.0, 10, 0.7);
+ init_gear(&gears[2], 1.3, 2.0, 0.5, 10, 0.7);
+}
+
+
+/* new window size or exposure */
+static void
+gears_reshape(int width, int height)
+{
+ GLfloat h = (GLfloat) height / (GLfloat) width;
+
+ glViewport(0, 0, (GLint) width, (GLint) height);
+
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glFrustumf(-1.0, 1.0, -h, h, 5.0, 60.0);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glTranslatef(0.0, 0.0, -40.0);
+}
+
+
+static void
+gears_idle(void)
+{
+ static double t0 = -1.;
+ double dt, t = eglutGet(EGLUT_ELAPSED_TIME) / 1000.0;
+ if (t0 < 0.0)
+ t0 = t;
+ dt = t - t0;
+ t0 = t;
+
+ angle += 70.0 * dt; /* 70 degrees per second */
+ angle = fmod(angle, 360.0); /* prevents eventual overflow */
+
+ eglutPostRedisplay();
+}
+
+
+int
+main(int argc, char *argv[])
+{
+ eglutInitWindowSize(300, 300);
+ eglutInitAPIMask(EGLUT_OPENGL_ES1_BIT);
+ eglutInit(argc, argv);
+
+ eglutCreateWindow("gears");
+
+ eglutIdleFunc(gears_idle);
+ eglutReshapeFunc(gears_reshape);
+ eglutDisplayFunc(gears_draw);
+
+ gears_init();
+
+ eglutMainLoop();
+
+ gears_fini();
+
+ return 0;
+}
+++ /dev/null
-# progs/egl/opengles1/screen/Makefile
-
-TOP = ../../../..
-include $(TOP)/configs/current
-
-ES1_CFLAGS = -I$(TOP)/include
-ES1_LIBS = -L$(TOP)/$(LIB_DIR) -lEGL -lGLESv1_CM
-
-ES1_LIB_DEPS = \
- $(TOP)/$(LIB_DIR)/libEGL.so \
- $(TOP)/$(LIB_DIR)/libGLESv1_CM.so
-
-WINSYS_OBJS = winsys.o
-
-PROGRAMS = \
- gears
-
-.c.o:
- $(CC) -c $(ES1_CFLAGS) $(CFLAGS) $< -o $@
-
-default: $(PROGRAMS)
-
-gears: gears.o $(WINSYS_OBJS) $(ES1_LIB_DEPS)
- $(CC) $(CFLAGS) -o $@ $@.o $(WINSYS_OBJS) $(ES1_LIBS)
-
-clean:
- -rm -f *.o *~
- -rm -f $(PROGRAMS)
+++ /dev/null
-/*
- * Copyright (C) 2009 Chia-I Wu <olv@0xlab.org>
- *
- * Based on eglgears by
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <math.h>
-#include <assert.h>
-
-#include <GLES/gl.h>
-#include "winsys.h"
-
-#ifndef M_PI
-#define M_PI 3.14159265
-#endif
-
-
-struct gear {
- GLuint vbo;
- GLfloat *vertices;
- GLsizei stride;
-
- GLint num_teeth;
-};
-
-static GLfloat view_rotx = 20.0, view_roty = 30.0, view_rotz = 0.0;
-static struct gear gears[3];
-static GLfloat angle = 0.0;
-
-/*
- * Initialize a gear wheel.
- *
- * Input: gear - gear to initialize
- * inner_radius - radius of hole at center
- * outer_radius - radius at center of teeth
- * width - width of gear
- * teeth - number of teeth
- * tooth_depth - depth of tooth
- */
-static void
-init_gear(struct gear *gear, GLfloat inner_radius, GLfloat outer_radius,
- GLfloat width, GLint teeth, GLfloat tooth_depth)
-{
- GLfloat r0, r1, r2;
- GLfloat a0, da;
- GLint verts_per_tooth, total_verts, total_size;
- GLint count, i;
- GLfloat *verts;
-
- r0 = inner_radius;
- r1 = outer_radius - tooth_depth / 2.0;
- r2 = outer_radius + tooth_depth / 2.0;
-
- a0 = 2.0 * M_PI / teeth;
- da = a0 / 4.0;
-
- gear->vbo = 0;
- gear->vertices = NULL;
- gear->stride = sizeof(GLfloat) * 6; /* XYZ + normal */
- gear->num_teeth = teeth;
-
- verts_per_tooth = 10 + 4;
- total_verts = teeth * verts_per_tooth;
- total_size = total_verts * gear->stride;
-
- verts = malloc(total_size);
- if (!verts) {
- printf("failed to allocate vertices\n");
- return;
- }
-
-#define GEAR_VERT(r, n, sign) \
- do { \
- verts[count * 6 + 0] = (r) * vx[n]; \
- verts[count * 6 + 1] = (r) * vy[n]; \
- verts[count * 6 + 2] = (sign) * width * 0.5; \
- verts[count * 6 + 3] = normal[0]; \
- verts[count * 6 + 4] = normal[1]; \
- verts[count * 6 + 5] = normal[2]; \
- count++; \
- } while (0)
-
- count = 0;
- for (i = 0; i < teeth; i++) {
- GLfloat normal[3];
- GLfloat vx[5], vy[5];
- GLfloat u, v;
-
- normal[0] = 0.0;
- normal[1] = 0.0;
- normal[2] = 0.0;
-
- vx[0] = cos(i * a0 + 0 * da);
- vy[0] = sin(i * a0 + 0 * da);
- vx[1] = cos(i * a0 + 1 * da);
- vy[1] = sin(i * a0 + 1 * da);
- vx[2] = cos(i * a0 + 2 * da);
- vy[2] = sin(i * a0 + 2 * da);
- vx[3] = cos(i * a0 + 3 * da);
- vy[3] = sin(i * a0 + 3 * da);
- vx[4] = cos(i * a0 + 4 * da);
- vy[4] = sin(i * a0 + 4 * da);
-
- /* outward faces of a tooth, 10 verts */
- normal[0] = vx[0];
- normal[1] = vy[0];
- GEAR_VERT(r1, 0, 1);
- GEAR_VERT(r1, 0, -1);
-
- u = r2 * vx[1] - r1 * vx[0];
- v = r2 * vy[1] - r1 * vy[0];
- normal[0] = v;
- normal[1] = -u;
- GEAR_VERT(r2, 1, 1);
- GEAR_VERT(r2, 1, -1);
-
- normal[0] = vx[0];
- normal[1] = vy[0];
- GEAR_VERT(r2, 2, 1);
- GEAR_VERT(r2, 2, -1);
-
- u = r1 * vx[3] - r2 * vx[2];
- v = r1 * vy[3] - r2 * vy[2];
- normal[0] = v;
- normal[1] = -u;
- GEAR_VERT(r1, 3, 1);
- GEAR_VERT(r1, 3, -1);
-
- normal[0] = vx[0];
- normal[1] = vy[0];
- GEAR_VERT(r1, 4, 1);
- GEAR_VERT(r1, 4, -1);
-
- /* inside radius cylinder, 4 verts */
- normal[0] = -vx[4];
- normal[1] = -vy[4];
- GEAR_VERT(r0, 4, 1);
- GEAR_VERT(r0, 4, -1);
-
- normal[0] = -vx[0];
- normal[1] = -vy[0];
- GEAR_VERT(r0, 0, 1);
- GEAR_VERT(r0, 0, -1);
-
- assert(count % verts_per_tooth == 0);
- }
- assert(count == total_verts);
-#undef GEAR_VERT
-
- gear->vertices = verts;
-
- /* setup VBO */
- glGenBuffers(1, &gear->vbo);
- if (gear->vbo) {
- glBindBuffer(GL_ARRAY_BUFFER, gear->vbo);
- glBufferData(GL_ARRAY_BUFFER, total_size, verts, GL_STATIC_DRAW);
- }
-}
-
-
-static void
-draw_gear(const struct gear *gear)
-{
- GLint i;
-
- if (!gear->vbo && !gear->vertices) {
- printf("nothing to be drawn\n");
- return;
- }
-
- if (gear->vbo) {
- glBindBuffer(GL_ARRAY_BUFFER, gear->vbo);
- glVertexPointer(3, GL_FLOAT, gear->stride, (const GLvoid *) 0);
- glNormalPointer(GL_FLOAT, gear->stride, (const GLvoid *) (sizeof(GLfloat) * 3));
- } else {
- glBindBuffer(GL_ARRAY_BUFFER, 0);
- glVertexPointer(3, GL_FLOAT, gear->stride, gear->vertices);
- glNormalPointer(GL_FLOAT, gear->stride, gear->vertices + 3);
- }
-
- glEnableClientState(GL_VERTEX_ARRAY);
-
- for (i = 0; i < gear->num_teeth; i++) {
- const GLint base = (10 + 4) * i;
- GLushort indices[7];
-
- glShadeModel(GL_FLAT);
-
- /* front face */
- indices[0] = base + 12;
- indices[1] = base + 0;
- indices[2] = base + 2;
- indices[3] = base + 4;
- indices[4] = base + 6;
- indices[5] = base + 8;
- indices[6] = base + 10;
-
- glNormal3f(0.0, 0.0, 1.0);
- glDrawElements(GL_TRIANGLE_FAN, 7, GL_UNSIGNED_SHORT, indices);
-
- /* back face */
- indices[0] = base + 13;
- indices[1] = base + 11;
- indices[2] = base + 9;
- indices[3] = base + 7;
- indices[4] = base + 5;
- indices[5] = base + 3;
- indices[6] = base + 1;
-
- glNormal3f(0.0, 0.0, -1.0);
- glDrawElements(GL_TRIANGLE_FAN, 7, GL_UNSIGNED_SHORT, indices);
-
- glEnableClientState(GL_NORMAL_ARRAY);
-
- /* outward face of a tooth */
- glDrawArrays(GL_TRIANGLE_STRIP, base, 10);
-
- /* inside radius cylinder */
- glShadeModel(GL_SMOOTH);
- glDrawArrays(GL_TRIANGLE_STRIP, base + 10, 4);
-
- glDisableClientState(GL_NORMAL_ARRAY);
- }
-
- glDisableClientState(GL_VERTEX_ARRAY);
-}
-
-
-static void
-gears_draw(void *data)
-{
- static const GLfloat red[4] = { 0.8, 0.1, 0.0, 1.0 };
- static const GLfloat green[4] = { 0.0, 0.8, 0.2, 1.0 };
- static const GLfloat blue[4] = { 0.2, 0.2, 1.0, 1.0 };
-
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glPushMatrix();
- glRotatef(view_rotx, 1.0, 0.0, 0.0);
- glRotatef(view_roty, 0.0, 1.0, 0.0);
- glRotatef(view_rotz, 0.0, 0.0, 1.0);
-
- glPushMatrix();
- glTranslatef(-3.0, -2.0, 0.0);
- glRotatef(angle, 0.0, 0.0, 1.0);
-
- glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, red);
- draw_gear(&gears[0]);
-
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(3.1, -2.0, 0.0);
- glRotatef(-2.0 * angle - 9.0, 0.0, 0.0, 1.0);
-
- glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, green);
- draw_gear(&gears[1]);
-
- glPopMatrix();
-
- glPushMatrix();
- glTranslatef(-3.1, 4.2, 0.0);
- glRotatef(-2.0 * angle - 25.0, 0.0, 0.0, 1.0);
-
- glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, blue);
- draw_gear(&gears[2]);
-
- glPopMatrix();
-
- glPopMatrix();
-
- /* advance rotation for next frame */
- angle += 0.5; /* 0.5 degree per frame */
- if (angle > 3600.0)
- angle -= 3600.0;
-}
-
-
-static void gears_fini(void)
-{
- GLint i;
- for (i = 0; i < 3; i++) {
- struct gear *gear = &gears[i];
- if (gear->vbo) {
- glDeleteBuffers(1, &gear->vbo);
- gear->vbo = 0;
- }
- if (gear->vertices) {
- free(gear->vertices);
- gear->vertices = NULL;
- }
- }
-}
-
-
-static void gears_init(void)
-{
- static const GLfloat pos[4] = { 5.0, 5.0, 10.0, 0.0 };
-
- glLightfv(GL_LIGHT0, GL_POSITION, pos);
- glEnable(GL_CULL_FACE);
- glEnable(GL_LIGHTING);
- glEnable(GL_LIGHT0);
- glEnable(GL_DEPTH_TEST);
- glEnable(GL_NORMALIZE);
-
- init_gear(&gears[0], 1.0, 4.0, 1.0, 20, 0.7);
- init_gear(&gears[1], 0.5, 2.0, 2.0, 10, 0.7);
- init_gear(&gears[2], 1.3, 2.0, 0.5, 10, 0.7);
-}
-
-
-/* new window size or exposure */
-static void
-gears_reshape(int width, int height)
-{
- GLfloat h = (GLfloat) height / (GLfloat) width;
-
- glViewport(0, 0, (GLint) width, (GLint) height);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustumf(-1.0, 1.0, -h, h, 5.0, 60.0);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef(0.0, 0.0, -40.0);
-}
-
-
-static void gears_run(void)
-{
- winsysRun(5.0, gears_draw, NULL);
-}
-
-
-int
-main(int argc, char *argv[])
-{
- EGLint width, height;
-
- if (!winsysInitScreen())
- exit(1);
- winsysQueryScreenSize(&width, &height);
-
- gears_init();
- gears_reshape(width, height);
- gears_run();
- gears_fini();
-
- winsysFiniScreen();
-
- return 0;
-}
+++ /dev/null
-/*
- * Copyright (C) 2009 Chia-I Wu <olv@0xlab.org>
- *
- * Based on eglgears by
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include <sys/time.h>
-
-#define EGL_EGLEXT_PROTOTYPES
-
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-#include "winsys.h"
-
-#define MAX_MODES 100
-
-static struct {
- EGLBoolean verbose;
-
- EGLDisplay dpy;
- EGLConfig conf;
-
- EGLScreenMESA screen;
- EGLModeMESA mode;
- EGLint width, height;
-
- EGLContext ctx;
- EGLSurface surf;
-} screen;
-
-
-static EGLBoolean
-init_screen(void)
-{
- EGLModeMESA modes[MAX_MODES];
- EGLint num_screens, num_modes;
- EGLint width, height, best_mode;
- EGLint i;
-
- if (!eglGetScreensMESA(screen.dpy, &screen.screen, 1, &num_screens) ||
- !num_screens) {
- printf("eglGetScreensMESA failed\n");
- return EGL_FALSE;
- }
-
- if (!eglGetModesMESA(screen.dpy, screen.screen, modes, MAX_MODES,
- &num_modes) ||
- !num_modes) {
- printf("eglGetModesMESA failed!\n");
- return EGL_FALSE;
- }
-
- printf("Found %d modes:\n", num_modes);
-
- best_mode = 0;
- width = 0;
- height = 0;
- for (i = 0; i < num_modes; i++) {
- EGLint w, h;
- eglGetModeAttribMESA(screen.dpy, modes[i], EGL_WIDTH, &w);
- eglGetModeAttribMESA(screen.dpy, modes[i], EGL_HEIGHT, &h);
- printf("%3d: %d x %d\n", i, w, h);
- if (w > width && h > height) {
- width = w;
- height = h;
- best_mode = i;
- }
- }
-
- screen.mode = modes[best_mode];
- screen.width = width;
- screen.height = height;
-
- return EGL_TRUE;
-}
-
-
-static EGLBoolean
-init_display(void)
-{
- EGLint maj, min;
- const char *exts;
- const EGLint attribs[] = {
- EGL_SURFACE_TYPE, 0x0, /* should be EGL_SCREEN_BIT_MESA */
- EGL_RENDERABLE_TYPE, 0x0, /* should be EGL_OPENGL_ES_BIT */
- EGL_NONE
- };
- EGLint num_configs;
-
- screen.dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
- if (!screen.dpy) {
- printf("eglGetDisplay failed\n");
- return EGL_FALSE;
- }
-
- if (!eglInitialize(screen.dpy, &maj, &min)) {
- printf("eglInitialize failed\n");
- return EGL_FALSE;
- }
-
- printf("EGL_VERSION = %s\n", eglQueryString(screen.dpy, EGL_VERSION));
- printf("EGL_VENDOR = %s\n", eglQueryString(screen.dpy, EGL_VENDOR));
-
- exts = eglQueryString(screen.dpy, EGL_EXTENSIONS);
- assert(exts);
-
- if (!strstr(exts, "EGL_MESA_screen_surface")) {
- printf("EGL_MESA_screen_surface is not supported\n");
- return EGL_FALSE;
- }
-
- if (!eglChooseConfig(screen.dpy, attribs, &screen.conf, 1,
- &num_configs) ||
- !num_configs) {
- printf("eglChooseConfig failed\n");
- return EGL_FALSE;
- }
-
- return EGL_TRUE;
-}
-
-
-EGLBoolean
-winsysInitScreen(void)
-{
- EGLint surf_attribs[20];
- EGLint i;
- EGLBoolean ok;
-
- if (!init_display())
- goto fail;
- if (!init_screen())
- goto fail;
-
- /* create context */
- screen.ctx = eglCreateContext(screen.dpy, screen.conf,
- EGL_NO_CONTEXT, NULL);
- if (screen.ctx == EGL_NO_CONTEXT) {
- printf("eglCreateContext failed\n");
- goto fail;
- }
-
- i = 0;
- surf_attribs[i++] = EGL_WIDTH;
- surf_attribs[i++] = screen.width;
- surf_attribs[i++] = EGL_HEIGHT;
- surf_attribs[i++] = screen.height;
- surf_attribs[i++] = EGL_NONE;
-
- /* create surface */
- printf("Using screen size: %d x %d\n", screen.width, screen.height);
- screen.surf = eglCreateScreenSurfaceMESA(screen.dpy, screen.conf,
- surf_attribs);
- if (screen.surf == EGL_NO_SURFACE) {
- printf("eglCreateScreenSurfaceMESA failed\n");
- goto fail;
- }
-
- ok = eglMakeCurrent(screen.dpy, screen.surf, screen.surf, screen.ctx);
- if (!ok) {
- printf("eglMakeCurrent failed\n");
- goto fail;
- }
-
- ok = eglShowScreenSurfaceMESA(screen.dpy, screen.screen,
- screen.surf, screen.mode);
- if (!ok) {
- printf("eglShowScreenSurfaceMESA failed\n");
- goto fail;
- }
-
- return EGL_TRUE;
-
-fail:
- winsysFiniScreen();
- return EGL_FALSE;
-}
-
-
-EGLBoolean
-winsysQueryScreenSize(EGLint *width, EGLint *height)
-{
- if (!screen.dpy)
- return EGL_FALSE;
-
- if (width)
- *width = screen.width;
- if (height)
- *height = screen.height;
-
- return EGL_TRUE;
-}
-
-
-void
-winsysFiniScreen(void)
-{
- if (screen.dpy) {
- eglMakeCurrent(screen.dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,
- EGL_NO_CONTEXT);
- if (screen.surf != EGL_NO_SURFACE)
- eglDestroySurface(screen.dpy, screen.surf);
- if (screen.ctx != EGL_NO_CONTEXT)
- eglDestroyContext(screen.dpy, screen.ctx);
- eglTerminate(screen.dpy);
-
- memset(&screen, 0, sizeof(screen));
- }
-}
-
-
-void
-winsysSwapBuffers(void)
-{
- eglSwapBuffers(screen.dpy, screen.surf);
-}
-
-
-/* return current time (in seconds) */
-double
-winsysNow(void)
-{
- struct timeval tv;
- gettimeofday(&tv, NULL);
- return (double) tv.tv_sec + tv.tv_usec / 1000000.0;
-}
-
-
-void
-winsysRun(double seconds, void (*draw_frame)(void *data), void *data)
-{
- double begin, end, last_frame, duration;
- EGLint num_frames = 0;
-
- begin = winsysNow();
- end = begin + seconds;
-
- last_frame = begin;
- while (last_frame < end) {
- draw_frame(data);
- winsysSwapBuffers();
- last_frame = winsysNow();
- num_frames++;
- }
-
- duration = last_frame - begin;
- printf("%d frames in %3.1f seconds = %6.3f FPS\n",
- num_frames, duration, (double) num_frames / duration);
-}
+++ /dev/null
-/*
- * Copyright (C) 2009 Chia-I Wu <olv@0xlab.org>
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#ifndef _WINSYS_H_
-#define _WINSYS_H_
-
-#include <EGL/egl.h>
-
-EGLBoolean winsysInitScreen(void);
-EGLBoolean winsysQueryScreenSize(EGLint *width, EGLint *height);
-void winsysFiniScreen(void);
-
-void winsysSwapBuffers(void);
-double winsysNow(void);
-
-void winsysRun(double seconds, void (*draw_frame)(void *data), void *data);
-
-#endif /* _WINSYS_H_ */
projects / mesa.git / commitdiff