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-rw-r--r--progs/egl/opengl/demo3.c647
1 files changed, 647 insertions, 0 deletions
diff --git a/progs/egl/opengl/demo3.c b/progs/egl/opengl/demo3.c
new file mode 100644
index 00000000000..64b9ee652cd
--- /dev/null
+++ b/progs/egl/opengl/demo3.c
@@ -0,0 +1,647 @@
+/*
+ * Exercise EGL API functions
+ */
+
+#define EGL_EGLEXT_PROTOTYPES
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GL/gl.h>
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.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 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,
+};
+
+
+static void Init(void)
+{
+
+ mode1 = GL_TRUE;
+ mode2 = GL_TRUE;
+}
+
+static void Reshape(int width, int height)
+{
+
+ windW = (GLint)width;
+ windH = (GLint)height;
+}
+
+#if 0
+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;
+ }
+}
+#endif
+
+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);
+}
+
+enum {
+ COLOR_BLACK = 0,
+ COLOR_RED,
+ COLOR_GREEN,
+ COLOR_YELLOW,
+ COLOR_BLUE,
+ COLOR_MAGENTA,
+ COLOR_CYAN,
+ COLOR_WHITE
+};
+
+static float RGBMap[9][3] = {
+ {0, 0, 0},
+ {1, 0, 0},
+ {0, 1, 0},
+ {1, 1, 0},
+ {0, 0, 1},
+ {1, 0, 1},
+ {0, 1, 1},
+ {1, 1, 1},
+ {0.5, 0.5, 0.5}
+};
+
+static void SetColor(int c)
+{
+ glColor3fv(RGBMap[c]);
+}
+
+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++) {
+ SetColor(COLOR_BLACK+i);
+ glBegin(GL_LINES);
+ glVertex2i(-boxW/4, -boxH/4);
+ 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(EGLDisplay dpy, EGLSurface surf)
+{
+
+ 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) {
+ eglSwapBuffers(dpy, surf);
+ }
+}
+
+static void
+write_ppm(const char *filename, const GLubyte *buffer, int width, int height)
+{
+ const int binary = 0;
+ FILE *f = fopen( filename, "w" );
+ if (f) {
+ int i, x, y;
+ const GLubyte *ptr = buffer;
+ if (binary) {
+ fprintf(f,"P6\n");
+ fprintf(f,"# ppm-file created by osdemo.c\n");
+ fprintf(f,"%i %i\n", width,height);
+ fprintf(f,"255\n");
+ fclose(f);
+ f = fopen( filename, "ab" ); /* reopen in binary append mode */
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ i = (y*width + x) * 4;
+ fputc(ptr[i], f); /* write red */
+ fputc(ptr[i+1], f); /* write green */
+ fputc(ptr[i+2], f); /* write blue */
+ }
+ }
+ }
+ else {
+ /*ASCII*/
+ int counter = 0;
+ fprintf(f,"P3\n");
+ fprintf(f,"# ascii ppm file created by osdemo.c\n");
+ fprintf(f,"%i %i\n", width, height);
+ fprintf(f,"255\n");
+ for (y=height-1; y>=0; y--) {
+ for (x=0; x<width; x++) {
+ i = (y*width + x) * 4;
+ fprintf(f, " %3d %3d %3d", ptr[i], ptr[i+1], ptr[i+2]);
+ counter++;
+ if (counter % 5 == 0)
+ fprintf(f, "\n");
+ }
+ }
+ }
+ fclose(f);
+ }
+}
+
+int
+main(int argc, char *argv[])
+{
+ int maj, min;
+ EGLContext ctx;
+ EGLSurface screen_surf;
+ EGLConfig configs[10];
+ EGLScreenMESA screen;
+ EGLModeMESA mode;
+ EGLint numConfigs, count;
+ EGLBoolean b;
+ const GLubyte *bitmap;
+ EGLint screenAttribs[32];
+ EGLint i;
+
+ EGLDisplay d = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+ assert(d);
+
+ if (!eglInitialize(d, &maj, &min)) {
+ printf("demo: eglInitialize failed\n");
+ exit(1);
+ }
+
+ printf("EGL version = %d.%d\n", maj, min);
+ printf("EGL_VENDOR = %s\n", eglQueryString(d, EGL_VENDOR));
+ if (!strstr(eglQueryString(d, EGL_EXTENSIONS),
+ "EGL_MESA_screen_surface")) {
+ printf("EGL_MESA_screen_surface is not supported\n");
+ exit(1);
+ }
+
+ eglGetConfigs(d, configs, 10, &numConfigs);
+ eglGetScreensMESA(d, &screen, 1, &count);
+ eglGetModesMESA(d, screen, &mode, 1, &count);
+
+ eglBindAPI(EGL_OPENGL_API);
+ ctx = eglCreateContext(d, configs[0], EGL_NO_CONTEXT, NULL);
+ if (ctx == EGL_NO_CONTEXT) {
+ printf("failed to create context\n");
+ return 0;
+ }
+
+ i = 0;
+ screenAttribs[i++] = EGL_WIDTH;
+ eglGetModeAttribMESA(d, mode, EGL_WIDTH, &screenAttribs[i++]);
+ screenAttribs[i++] = EGL_HEIGHT;
+ eglGetModeAttribMESA(d, mode, EGL_HEIGHT, &screenAttribs[i++]);
+ screenAttribs[i] = EGL_NONE;
+
+ screen_surf = eglCreateScreenSurfaceMESA(d, configs[0], screenAttribs);
+ if (screen_surf == EGL_NO_SURFACE) {
+ printf("failed to create screen surface\n");
+ return 0;
+ }
+
+ eglShowScreenSurfaceMESA(d, screen, screen_surf, mode);
+
+ b = eglMakeCurrent(d, screen_surf, screen_surf, ctx);
+ if (!b) {
+ printf("make current failed\n");
+ return 0;
+ }
+ glViewport(0, 0, 1024, 768);
+
+
+ Init();
+ Reshape(1024, 768);
+
+ /* some drivers crash when rendering to front buffer */
+#if 0
+ glDrawBuffer( GL_FRONT );
+ glClearColor( 0, 1.0, 0, 1);
+
+ glClear( GL_COLOR_BUFFER_BIT );
+#endif
+
+ doubleBuffer = 1;
+ glDrawBuffer( GL_BACK );
+
+ Draw(d, screen_surf);
+ sleep(2);
+
+ /* TODO EGL_KHR_lock_surface */
+ bitmap = NULL;
+ if (bitmap)
+ write_ppm("dump.ppm", bitmap, 1024, 768);
+
+ eglDestroySurface(d, screen_surf);
+ eglDestroyContext(d, ctx);
+ eglTerminate(d);
+
+ return 0;
+}
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