From 03053b119a625a03e28a86be0f0ab2aa9e2a6a49 Mon Sep 17 00:00:00 2001 From: Tomeu Vizoso Date: Tue, 1 Oct 2013 13:19:20 +0200 Subject: [PATCH] wayland: Add Wayland example --- .../linux/apps/hello_pi/CMakeLists.txt | 1 + .../linux/apps/hello_pi/Makefile | 2 + .../hello_pi/hello_wayland/CMakeLists.txt | 8 + .../hello_pi/hello_wayland/Djenne_128_128.raw | 3 + .../apps/hello_pi/hello_wayland/Makefile | 5 + .../hello_wayland/cube_texture_and_coords.h | 100 +++ .../apps/hello_pi/hello_wayland/triangle.c | 666 ++++++++++++++++++ 7 files changed, 785 insertions(+) create mode 100644 host_applications/linux/apps/hello_pi/hello_wayland/CMakeLists.txt create mode 100644 host_applications/linux/apps/hello_pi/hello_wayland/Djenne_128_128.raw create mode 100644 host_applications/linux/apps/hello_pi/hello_wayland/Makefile create mode 100644 host_applications/linux/apps/hello_pi/hello_wayland/cube_texture_and_coords.h create mode 100644 host_applications/linux/apps/hello_pi/hello_wayland/triangle.c diff --git a/host_applications/linux/apps/hello_pi/CMakeLists.txt b/host_applications/linux/apps/hello_pi/CMakeLists.txt index b28a94a..2849fad 100644 --- a/host_applications/linux/apps/hello_pi/CMakeLists.txt +++ b/host_applications/linux/apps/hello_pi/CMakeLists.txt @@ -25,6 +25,7 @@ add_subdirectory(hello_encode) add_subdirectory(hello_jpeg) add_subdirectory(hello_videocube) add_subdirectory(hello_teapot) +add_subdirectory(hello_wayland) if(BUILD_FONT) set(VGFONT_SRCS libs/vgfont/font.c libs/vgfont/vgft.c libs/vgfont/graphics.c) diff --git a/host_applications/linux/apps/hello_pi/Makefile b/host_applications/linux/apps/hello_pi/Makefile index 4c2b2ef..d2b2555 100644 --- a/host_applications/linux/apps/hello_pi/Makefile +++ b/host_applications/linux/apps/hello_pi/Makefile @@ -24,6 +24,7 @@ apps: libs/ilclient/libilclient.a libs/vgfont/libvgfont.a libs/revision/librevis $(MAKE) -C hello_teapot $(MAKE) -C hello_fft $(MAKE) -C hello_mmal_encode + $(MAKE) -C hello_wayland clean: $(MAKE) -C libs/ilclient clean @@ -43,4 +44,5 @@ clean: $(MAKE) -C hello_teapot clean $(MAKE) -C hello_fft clean $(MAKE) -C hello_mmal_encode clean + $(MAKE) -C hello_wayland clean diff --git a/host_applications/linux/apps/hello_pi/hello_wayland/CMakeLists.txt b/host_applications/linux/apps/hello_pi/hello_wayland/CMakeLists.txt new file mode 100644 index 0000000..9a2f75c --- /dev/null +++ b/host_applications/linux/apps/hello_pi/hello_wayland/CMakeLists.txt @@ -0,0 +1,8 @@ +set(EXEC hello_wayland.bin) +set(SRCS triangle.c) + +add_executable(${EXEC} ${SRCS}) +target_link_libraries(${EXEC} ${HELLO_PI_LIBS} -lwayland-client -lwayland-egl) + +install(TARGETS ${EXEC} + RUNTIME DESTINATION bin) diff --git a/host_applications/linux/apps/hello_pi/hello_wayland/Djenne_128_128.raw b/host_applications/linux/apps/hello_pi/hello_wayland/Djenne_128_128.raw new file mode 100644 index 0000000..de9173c --- /dev/null +++ b/host_applications/linux/apps/hello_pi/hello_wayland/Djenne_128_128.raw @@ -0,0 +1,3 @@ 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b/host_applications/linux/apps/hello_pi/hello_wayland/cube_texture_and_coords.h new file mode 100644 index 0000000..663e23b --- /dev/null +++ b/host_applications/linux/apps/hello_pi/hello_wayland/cube_texture_and_coords.h @@ -0,0 +1,100 @@ +/* +Copyright (c) 2012, Broadcom Europe Ltd +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of the copyright holder nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +// Spatial coordinates for the cube + +static const GLbyte quadx[6*4*3] = { + /* FRONT */ + -10, -10, 10, + 10, -10, 10, + -10, 10, 10, + 10, 10, 10, + + /* BACK */ + -10, -10, -10, + -10, 10, -10, + 10, -10, -10, + 10, 10, -10, + + /* LEFT */ + -10, -10, 10, + -10, 10, 10, + -10, -10, -10, + -10, 10, -10, + + /* RIGHT */ + 10, -10, -10, + 10, 10, -10, + 10, -10, 10, + 10, 10, 10, + + /* TOP */ + -10, 10, 10, + 10, 10, 10, + -10, 10, -10, + 10, 10, -10, + + /* BOTTOM */ + -10, -10, 10, + -10, -10, -10, + 10, -10, 10, + 10, -10, -10, +}; + +/** Texture coordinates for the quad. */ +static const GLfloat texCoords[6 * 4 * 2] = { + 0.f, 0.f, + 1.f, 0.f, + 0.f, 1.f, + 1.f, 1.f, + + 0.f, 0.f, + 1.f, 0.f, + 0.f, 1.f, + 1.f, 1.f, + + 0.f, 0.f, + 1.f, 0.f, + 0.f, 1.f, + 1.f, 1.f, + + 0.f, 0.f, + 1.f, 0.f, + 0.f, 1.f, + 1.f, 1.f, + + 0.f, 0.f, + 1.f, 0.f, + 0.f, 1.f, + 1.f, 1.f, + + 0.f, 0.f, + 1.f, 0.f, + 0.f, 1.f, + 1.f, 1.f, +}; + diff --git a/host_applications/linux/apps/hello_pi/hello_wayland/triangle.c b/host_applications/linux/apps/hello_pi/hello_wayland/triangle.c new file mode 100644 index 0000000..1a7bfc4 --- /dev/null +++ b/host_applications/linux/apps/hello_pi/hello_wayland/triangle.c @@ -0,0 +1,666 @@ +/* +Copyright (c) 2012, Broadcom Europe Ltd +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + * Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + * Neither the name of the copyright holder nor the + names of its contributors may be used to endorse or promote products + derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +// A rotating cube rendered with OpenGL|ES. Three images used as textures on the cube faces. + +#define _GNU_SOURCE + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "GLES/gl.h" +#include "EGL/egl.h" +#include "EGL/eglext.h" + +#include "cube_texture_and_coords.h" + +#define PATH "./" + +#define IMAGE_SIZE 128 + +#ifndef M_PI + #define M_PI 3.141592654 +#endif + + +typedef struct +{ + uint32_t screen_width; + uint32_t screen_height; +// OpenGL|ES objects + EGLDisplay display; + EGLSurface surface; + EGLContext context; + GLuint tex[6]; +// model rotation vector and direction + GLfloat rot_angle_x_inc; + GLfloat rot_angle_y_inc; + GLfloat rot_angle_z_inc; +// current model rotation angles + GLfloat rot_angle_x; + GLfloat rot_angle_y; + GLfloat rot_angle_z; +// current distance from camera + GLfloat distance; + GLfloat distance_inc; +// pointers to texture buffers + char *tex_buf1; + char *tex_buf2; + char *tex_buf3; + struct wl_display *wl_display; + struct wl_registry *wl_registry; + struct wl_shell *wl_shell; + struct wl_shell_surface *wl_shell_surface; + struct wl_compositor *wl_compositor; + struct wl_surface *wl_surface; + struct wl_callback *wl_callback; + struct wl_egl_window *wl_egl_window; + int needs_update; + int ellapsed_frames; + int kill_compositor; + int single_frame; + int terminate_abruptly; +} CUBE_STATE_T; + +static void init_ogl(CUBE_STATE_T *state); +static void init_model_proj(CUBE_STATE_T *state); +static void reset_model(CUBE_STATE_T *state); +static GLfloat inc_and_wrap_angle(GLfloat angle, GLfloat angle_inc); +static GLfloat inc_and_clip_distance(GLfloat distance, GLfloat distance_inc); +static void redraw_scene(CUBE_STATE_T *state); +static void update_model(CUBE_STATE_T *state); +static void init_textures(CUBE_STATE_T *state); +static void load_tex_images(CUBE_STATE_T *state); +static void exit_func(CUBE_STATE_T *state); + +static void +registry_handle_global(void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) +{ + CUBE_STATE_T *state = data; + + if (strcmp(interface, "wl_compositor") == 0) { + state->wl_compositor = + wl_registry_bind(registry, name, + &wl_compositor_interface, 1); + } else if (strcmp(interface, "wl_shell") == 0) { + state->wl_shell = wl_registry_bind(registry, name, + &wl_shell_interface, 1); + } +} + +static void +registry_handle_global_remove(void *data, struct wl_registry *registry, + uint32_t name) +{ +} + +static const struct wl_registry_listener registry_listener = { + registry_handle_global, + registry_handle_global_remove +}; + +/*********************************************************** + * Name: init_ogl + * + * Arguments: + * CUBE_STATE_T *state - holds OGLES model info + * + * Description: Sets the display, OpenGL|ES context and screen stuff + * + * Returns: void + * + ***********************************************************/ +static void init_ogl(CUBE_STATE_T *state) +{ + EGLBoolean result; + EGLint num_config; + + static const EGLint attribute_list[] = + { + EGL_RED_SIZE, 8, + EGL_GREEN_SIZE, 8, + EGL_BLUE_SIZE, 8, + EGL_ALPHA_SIZE, 8, + EGL_SURFACE_TYPE, EGL_WINDOW_BIT, + EGL_NONE + }; + + EGLConfig config; + + state->wl_display = wl_display_connect(NULL); + + state->wl_registry = wl_display_get_registry(state->wl_display); + wl_registry_add_listener(state->wl_registry, ®istry_listener, state); + + wl_display_dispatch(state->wl_display); + + // get an EGL display connection + state->display = eglGetDisplay(state->wl_display); + assert(state->display!=EGL_NO_DISPLAY); + + // initialize the EGL display connection + result = eglInitialize(state->display, NULL, NULL); + assert(EGL_FALSE != result); + + // get an appropriate EGL frame buffer configuration + result = eglChooseConfig(state->display, attribute_list, &config, 1, &num_config); + assert(EGL_FALSE != result); + + // create an EGL rendering context + state->context = eglCreateContext(state->display, config, EGL_NO_CONTEXT, NULL); + assert(state->context!=EGL_NO_CONTEXT); + + // create an EGL window surface + state->screen_width = 1024; + state->screen_height = 860; + + state->wl_surface = wl_compositor_create_surface(state->wl_compositor); + state->wl_shell_surface = wl_shell_get_shell_surface(state->wl_shell, state->wl_surface); + + wl_shell_surface_set_toplevel(state->wl_shell_surface); + wl_shell_surface_set_title(state->wl_shell_surface, "triangle.c"); + + state->wl_egl_window = wl_egl_window_create(state->wl_surface, state->screen_width, state->screen_height); + + state->surface = eglCreateWindowSurface( state->display, config, state->wl_egl_window, NULL ); + assert(state->surface != EGL_NO_SURFACE); + + // connect the context to the surface + result = eglMakeCurrent(state->display, state->surface, state->surface, state->context); + assert(EGL_FALSE != result); + + // Set background color and clear buffers + glClearColor(0.15f, 0.25f, 0.35f, 1.0f); + + // Enable back face culling. + glEnable(GL_CULL_FACE); + + glMatrixMode(GL_MODELVIEW); +} + +/*********************************************************** + * Name: init_model_proj + * + * Arguments: + * CUBE_STATE_T *state - holds OGLES model info + * + * Description: Sets the OpenGL|ES model to default values + * + * Returns: void + * + ***********************************************************/ +static void init_model_proj(CUBE_STATE_T *state) +{ + float nearp = 1.0f; + float farp = 500.0f; + float hht; + float hwd; + + glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ); + + glViewport(0, 0, (GLsizei)state->screen_width, (GLsizei)state->screen_height); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + + hht = nearp * (float)tan(45.0 / 2.0 / 180.0 * M_PI); + hwd = hht * (float)state->screen_width / (float)state->screen_height; + + glFrustumf(-hwd, hwd, -hht, hht, nearp, farp); + + glEnableClientState( GL_VERTEX_ARRAY ); + glVertexPointer( 3, GL_BYTE, 0, quadx ); + + reset_model(state); +} + +/*********************************************************** + * Name: reset_model + * + * Arguments: + * CUBE_STATE_T *state - holds OGLES model info + * + * Description: Resets the Model projection and rotation direction + * + * Returns: void + * + ***********************************************************/ +static void reset_model(CUBE_STATE_T *state) +{ + // reset model position + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glTranslatef(0.f, 0.f, -50.f); + + // reset model rotation + state->rot_angle_x = 45.f; state->rot_angle_y = 30.f; state->rot_angle_z = 0.f; + state->rot_angle_x_inc = 0.5f; state->rot_angle_y_inc = 0.5f; state->rot_angle_z_inc = 0.f; + state->distance = 40.f; +} + +/*********************************************************** + * Name: update_model + * + * Arguments: + * CUBE_STATE_T *state - holds OGLES model info + * + * Description: Updates model projection to current position/rotation + * + * Returns: void + * + ***********************************************************/ +static void update_model(CUBE_STATE_T *state) +{ + // update position + state->rot_angle_x = inc_and_wrap_angle(state->rot_angle_x, state->rot_angle_x_inc); + state->rot_angle_y = inc_and_wrap_angle(state->rot_angle_y, state->rot_angle_y_inc); + state->rot_angle_z = inc_and_wrap_angle(state->rot_angle_z, state->rot_angle_z_inc); + state->distance = inc_and_clip_distance(state->distance, state->distance_inc); + + glLoadIdentity(); + // move camera back to see the cube + glTranslatef(0.f, 0.f, -state->distance); + + // Rotate model to new position + glRotatef(state->rot_angle_x, 1.f, 0.f, 0.f); + glRotatef(state->rot_angle_y, 0.f, 1.f, 0.f); + glRotatef(state->rot_angle_z, 0.f, 0.f, 1.f); +} + +/*********************************************************** + * Name: inc_and_wrap_angle + * + * Arguments: + * GLfloat angle current angle + * GLfloat angle_inc angle increment + * + * Description: Increments or decrements angle by angle_inc degrees + * Wraps to 0 at 360 deg. + * + * Returns: new value of angle + * + ***********************************************************/ +static GLfloat inc_and_wrap_angle(GLfloat angle, GLfloat angle_inc) +{ + angle += angle_inc; + + if (angle >= 360.0) + angle -= 360.f; + else if (angle <=0) + angle += 360.f; + + return angle; +} + +/*********************************************************** + * Name: inc_and_clip_distance + * + * Arguments: + * GLfloat distance current distance + * GLfloat distance_inc distance increment + * + * Description: Increments or decrements distance by distance_inc units + * Clips to range + * + * Returns: new value of angle + * + ***********************************************************/ +static GLfloat inc_and_clip_distance(GLfloat distance, GLfloat distance_inc) +{ + distance += distance_inc; + + if (distance >= 120.0f) + distance = 120.f; + else if (distance <= 40.0f) + distance = 40.0f; + + return distance; +} + +static pid_t get_server_pid(CUBE_STATE_T *state) +{ + struct ucred ucred; + socklen_t len; + int fd; + + fd = wl_display_get_fd(state->wl_display); + len = sizeof ucred; + getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &len); + + return ucred.pid; +} + +static void +frame(void *data, struct wl_callback *callback, uint32_t time) +{ + CUBE_STATE_T *state = (CUBE_STATE_T *) data; + + state->needs_update = 1; +} + +static const struct wl_callback_listener frame_listener = { + frame +}; + +static void +update(CUBE_STATE_T *state) +{ + if (!state->single_frame || state->ellapsed_frames == 0) { + update_model(state); + redraw_scene(state); + } + + state->wl_callback = wl_surface_frame(state->wl_surface); + wl_callback_add_listener(state->wl_callback, &frame_listener, state); + + if (state->ellapsed_frames == 100) { + if (state->kill_compositor) { + fprintf(stderr, "reached frame 100, killing compositor\n"); + pid_t pid = get_server_pid(state); + kill(pid, SIGTERM); + } else if (state->terminate_abruptly) { + fprintf(stderr, "reached frame 100, terminating right away\n"); + exit_func(state); + exit(0); + } + } + + if (!state->single_frame || state->ellapsed_frames == 0) + eglSwapBuffers(state->display, state->surface); + else { + wl_surface_damage(state->wl_surface, 0, 0, state->screen_width, + state->screen_height); + wl_surface_commit(state->wl_surface); + } + + state->ellapsed_frames++; +} + +/*********************************************************** + * Name: redraw_scene + * + * Arguments: + * CUBE_STATE_T *state - holds OGLES model info + * + * Description: Draws the model and calls eglSwapBuffers + * to render to screen + * + * Returns: void + * + ***********************************************************/ +static void redraw_scene(CUBE_STATE_T *state) +{ + // Start with a clear screen + glClear( GL_COLOR_BUFFER_BIT ); + + // Draw first (front) face: + // Bind texture surface to current vertices + glBindTexture(GL_TEXTURE_2D, state->tex[0]); + + // Need to rotate textures - do this by rotating each cube face + glRotatef(270.f, 0.f, 0.f, 1.f ); // front face normal along z axis + + // draw first 4 vertices + glDrawArrays( GL_TRIANGLE_STRIP, 0, 4); + + // same pattern for other 5 faces - rotation chosen to make image orientation 'nice' + glBindTexture(GL_TEXTURE_2D, state->tex[1]); + glRotatef(90.f, 0.f, 0.f, 1.f ); // back face normal along z axis + glDrawArrays( GL_TRIANGLE_STRIP, 4, 4); + + glBindTexture(GL_TEXTURE_2D, state->tex[2]); + glRotatef(90.f, 1.f, 0.f, 0.f ); // left face normal along x axis + glDrawArrays( GL_TRIANGLE_STRIP, 8, 4); + + glBindTexture(GL_TEXTURE_2D, state->tex[3]); + glRotatef(90.f, 1.f, 0.f, 0.f ); // right face normal along x axis + glDrawArrays( GL_TRIANGLE_STRIP, 12, 4); + + glBindTexture(GL_TEXTURE_2D, state->tex[4]); + glRotatef(270.f, 0.f, 1.f, 0.f ); // top face normal along y axis + glDrawArrays( GL_TRIANGLE_STRIP, 16, 4); + + glBindTexture(GL_TEXTURE_2D, state->tex[5]); + glRotatef(90.f, 0.f, 1.f, 0.f ); // bottom face normal along y axis + glDrawArrays( GL_TRIANGLE_STRIP, 20, 4); +} + +/*********************************************************** + * Name: init_textures + * + * Arguments: + * CUBE_STATE_T *state - holds OGLES model info + * + * Description: Initialise OGL|ES texture surfaces to use image + * buffers + * + * Returns: void + * + ***********************************************************/ +static void init_textures(CUBE_STATE_T *state) +{ + // load three texture buffers but use them on six OGL|ES texture surfaces + load_tex_images(state); + glGenTextures(6, &state->tex[0]); + + // setup first texture + glBindTexture(GL_TEXTURE_2D, state->tex[0]); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, IMAGE_SIZE, IMAGE_SIZE, 0, + GL_RGB, GL_UNSIGNED_BYTE, state->tex_buf1); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (GLfloat)GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, (GLfloat)GL_NEAREST); + + // setup second texture - reuse first image + glBindTexture(GL_TEXTURE_2D, state->tex[1]); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, IMAGE_SIZE, IMAGE_SIZE, 0, + GL_RGB, GL_UNSIGNED_BYTE, state->tex_buf1); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (GLfloat)GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, (GLfloat)GL_NEAREST); + + // third texture + glBindTexture(GL_TEXTURE_2D, state->tex[2]); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, IMAGE_SIZE, IMAGE_SIZE, 0, + GL_RGB, GL_UNSIGNED_BYTE, state->tex_buf2); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (GLfloat)GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, (GLfloat)GL_NEAREST); + + // fourth texture - reuse second image + glBindTexture(GL_TEXTURE_2D, state->tex[3]); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, IMAGE_SIZE, IMAGE_SIZE, 0, + GL_RGB, GL_UNSIGNED_BYTE, state->tex_buf2); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (GLfloat)GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, (GLfloat)GL_NEAREST); + + //fifth texture + glBindTexture(GL_TEXTURE_2D, state->tex[4]); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, IMAGE_SIZE, IMAGE_SIZE, 0, + GL_RGB, GL_UNSIGNED_BYTE, state->tex_buf3); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (GLfloat)GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, (GLfloat)GL_NEAREST); + + // sixth texture - reuse third image + glBindTexture(GL_TEXTURE_2D, state->tex[5]); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, IMAGE_SIZE, IMAGE_SIZE, 0, + GL_RGB, GL_UNSIGNED_BYTE, state->tex_buf3); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, (GLfloat)GL_NEAREST); + glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, (GLfloat)GL_NEAREST); + + // setup overall texture environment + glTexCoordPointer(2, GL_FLOAT, 0, texCoords); + glEnableClientState(GL_TEXTURE_COORD_ARRAY); + + glEnable(GL_TEXTURE_2D); +} + +/*********************************************************** + * Name: load_tex_images + * + * Arguments: + * void + * + * Description: Loads three raw images to use as textures on faces + * + * Returns: void + * + ***********************************************************/ +static void load_tex_images(CUBE_STATE_T *state) +{ + FILE *tex_file1 = NULL, *tex_file2=NULL, *tex_file3 = NULL; + int bytes_read, image_sz = IMAGE_SIZE*IMAGE_SIZE*3; + + state->tex_buf1 = malloc(image_sz); + state->tex_buf2 = malloc(image_sz); + state->tex_buf3 = malloc(image_sz); + + tex_file1 = fopen(PATH "Lucca_128_128.raw", "rb"); + if (tex_file1 && state->tex_buf1) + { + bytes_read=fread(state->tex_buf1, 1, image_sz, tex_file1); + assert(bytes_read == image_sz); // some problem with file? + fclose(tex_file1); + } + + tex_file2 = fopen(PATH "Djenne_128_128.raw", "rb"); + if (tex_file2 && state->tex_buf2) + { + bytes_read=fread(state->tex_buf2, 1, image_sz, tex_file2); + assert(bytes_read == image_sz); // some problem with file? + fclose(tex_file2); + } + + tex_file3 = fopen(PATH "Gaudi_128_128.raw", "rb"); + if (tex_file3 && state->tex_buf3) + { + bytes_read=fread(state->tex_buf3, 1, image_sz, tex_file3); + assert(bytes_read == image_sz); // some problem with file? + fclose(tex_file3); + } +} + +//------------------------------------------------------------------------------ + +static void exit_func(CUBE_STATE_T *state) +{ + // clear screen + glClear( GL_COLOR_BUFFER_BIT ); + eglSwapBuffers(state->display, state->surface); + + // Release OpenGL resources + eglMakeCurrent( state->display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT ); + + wl_egl_window_destroy(state->wl_egl_window); + wl_shell_surface_destroy(state->wl_shell_surface); + wl_surface_destroy(state->wl_surface); + + eglDestroySurface( state->display, state->surface ); + eglDestroyContext( state->display, state->context ); + eglTerminate( state->display ); + + wl_display_flush(state->wl_display); + + // release texture buffers + free(state->tex_buf1); + free(state->tex_buf2); + free(state->tex_buf3); + + printf("\ncube closed\n"); +} // exit_func() + +static int running = 1; + +static void +signal_int(int signum) +{ + running = 0; +} + +//============================================================================== + +int main (int argc, char *argv[]) +{ + struct sigaction sigint; + CUBE_STATE_T state = {0,}; + int ret = 0; + int i; + + for (i = 0; i < argc; i++) { + if (strcmp(argv[i], "--kill-compositor") == 0) + state.kill_compositor = 1; + if (strcmp(argv[i], "--single-frame") == 0) + state.single_frame = 1; + if (strcmp(argv[i], "--terminate-abruptly") == 0) + state.terminate_abruptly = 1; + else if (strcmp(argv[i], "--help") == 0 || + strcmp(argv[i], "-h") == 0) { + printf("Usage: hello_wayland.bin [OPTION]\n\n"); + printf("\t--kill-compositor\tkill the Wayland compositor after 100 frames\n"); + printf("\t-h, --help\t\tshow this text\n"); + printf("\t--single-frame\t\tupdate the display only once\n"); + printf("\t--terminate-abruptly\texit right after rendering the 100th frame\n"); + return 0; + } + } + + // Start OGLES + init_ogl(&state); + + // Setup the model world + init_model_proj(&state); + + // initialise the OGLES texture(s) + init_textures(&state); + + sigint.sa_handler = signal_int; + sigemptyset(&sigint.sa_mask); + sigint.sa_flags = SA_RESETHAND; + sigaction(SIGINT, &sigint, NULL); + + state.needs_update = 1; + while (running && ret != -1) { + if (state.needs_update) { + update(&state); + state.needs_update = 0; + } + + ret = wl_display_dispatch(state.wl_display); + } + + exit_func(&state); + + return 0; +} +