wlroots-hyprland/example/rotation.c

381 lines
9.7 KiB
C
Raw Normal View History

2017-06-05 12:48:51 +02:00
#define _POSIX_C_SOURCE 199309L
#define _XOPEN_SOURCE 500
2017-06-05 12:48:51 +02:00
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include <unistd.h>
#include <wayland-server.h>
#include <wayland-server-protocol.h>
#include <GLES3/gl3.h>
#include <wlr/render/matrix.h>
2017-06-05 12:48:51 +02:00
#include <wlr/backend.h>
#include <wlr/session.h>
#include <wlr/types.h>
#include <math.h>
#include "cat.h"
2017-06-05 12:48:51 +02:00
static const GLchar vert_src[] =
"uniform mat4 proj;\n"
"attribute vec2 pos;\n"
"attribute vec2 texcoord;\n"
"varying vec2 v_texcoord;\n"
2017-06-05 12:48:51 +02:00
"void main() {\n"
" gl_Position = proj * vec4(pos, 0.0, 1.0);\n"
" v_texcoord = texcoord;\n"
2017-06-05 12:48:51 +02:00
"}\n";
static const GLchar frag_src[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
2017-06-05 12:48:51 +02:00
"void main() {\n"
" gl_FragColor = texture2D(tex, v_texcoord);\n"
2017-06-05 12:48:51 +02:00
"}\n";
struct state {
struct wl_listener output_add;
struct wl_listener output_remove;
struct wl_list outputs;
struct wl_list config;
struct gl {
GLuint prog;
GLuint vao;
GLuint vbo;
GLuint ebo;
GLuint tex;
2017-06-05 12:48:51 +02:00
} gl;
};
struct output_state {
struct timespec last_frame;
2017-06-05 12:48:51 +02:00
struct wl_list link;
struct wlr_output *output;
struct state *state;
struct wl_listener frame;
float x, y;
float vel_x, vel_y;
2017-06-05 12:48:51 +02:00
};
struct output_config {
char *name;
enum wl_output_transform transform;
struct wl_list link;
};
static GLuint create_shader(GLenum type, const GLchar *src, GLint len) {
GLuint shader = glCreateShader(type);
glShaderSource(shader, 1, &src, &len);
glCompileShader(shader);
GLint success;
glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
if (success == GL_FALSE) {
GLint loglen;
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &loglen);
GLchar msg[loglen];
glGetShaderInfoLog(shader, loglen, &loglen, msg);
fprintf(stderr, "Failed to create shader: %s\n", msg);
exit(1);
}
return shader;
}
static void init_gl(struct gl *gl) {
GLuint vert = create_shader(GL_VERTEX_SHADER, vert_src, strlen(vert_src));
GLuint frag = create_shader(GL_FRAGMENT_SHADER, frag_src, strlen(frag_src));
gl->prog = glCreateProgram();
glAttachShader(gl->prog, vert);
glAttachShader(gl->prog, frag);
glLinkProgram(gl->prog);
GLint success;
glGetProgramiv(gl->prog, GL_LINK_STATUS, &success);
if (success == GL_FALSE) {
GLint len;
glGetProgramiv(gl->prog, GL_INFO_LOG_LENGTH, &len);
GLchar msg[len];
glGetProgramInfoLog(gl->prog, len, &len, msg);
fprintf(stderr, "Failed to link program: %s\n", msg);
exit(1);
}
glDeleteProgram(vert);
glDeleteProgram(frag);
GLfloat verticies[] = {
1, 1, 1, 1, // bottom right
1, 0, 1, 0, // top right
0, 0, 0, 0, // top left
0, 1, 0, 1, // bottom left
};
GLuint indicies[] = {
0, 1, 3,
1, 2, 3,
};
2017-06-05 12:48:51 +02:00
glGenVertexArrays(1, &gl->vao);
glGenBuffers(1, &gl->vbo);
glBindVertexArray(gl->vao);
glBindBuffer(GL_ARRAY_BUFFER, gl->vbo);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (void *)0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(GLfloat), (void *)(2 * sizeof(GLfloat)));
glBufferData(GL_ARRAY_BUFFER, sizeof(verticies), verticies, GL_STATIC_DRAW);
glGenBuffers(1, &gl->ebo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, gl->ebo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indicies), indicies, GL_STATIC_DRAW);
glGenTextures(1, &gl->tex);
glBindTexture(GL_TEXTURE_2D, gl->tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, cat_tex.width, cat_tex.height,
0, GL_RGB, GL_UNSIGNED_BYTE, cat_tex.pixel_data);
2017-06-05 12:48:51 +02:00
}
static void cleanup_gl(struct gl *gl) {
glDeleteProgram(gl->prog);
glDeleteVertexArrays(1, &gl->vao);
glDeleteBuffers(1, &gl->vbo);
glDeleteTextures(1, &gl->tex);
2017-06-05 12:48:51 +02:00
}
static void output_frame(struct wl_listener *listener, void *data) {
2017-06-05 12:48:51 +02:00
struct output_state *ostate = wl_container_of(listener, ostate, frame);
struct wlr_output *output = ostate->output;
2017-06-05 12:48:51 +02:00
struct state *s = ostate->state;
glClearColor(0.25f, 0.25f, 0.25f, 1);
glClear(GL_COLOR_BUFFER_BIT);
int32_t width = output->width;
int32_t height = output->height;
2017-06-05 12:48:51 +02:00
glViewport(0, 0, width, height);
wlr_output_effective_resolution(output, &width, &height);
2017-06-05 12:48:51 +02:00
glUseProgram(s->gl.prog);
glBindVertexArray(s->gl.vao);
glBindBuffer(GL_ARRAY_BUFFER, s->gl.vbo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, s->gl.ebo);
glActiveTexture(GL_TEXTURE0 + 1);
glBindTexture(GL_TEXTURE_2D, s->gl.tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
2017-06-05 12:48:51 +02:00
float world[16], final[16];
wlr_matrix_identity(&final);
wlr_matrix_translate(&world, ostate->x, ostate->y, 0);
wlr_matrix_mul(&final, &world, &final);
wlr_matrix_scale(&world, 128, 128, 1);
wlr_matrix_mul(&final, &world, &final);
wlr_matrix_mul(&output->transform_matrix, &final, &final);
glUniformMatrix4fv(0, 1, GL_TRUE, final);
2017-06-05 12:48:51 +02:00
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
2017-06-05 12:48:51 +02:00
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
long ms = (now.tv_sec - ostate->last_frame.tv_sec) * 1000 +
(now.tv_nsec - ostate->last_frame.tv_nsec) / 1000000;
float seconds = ms / 1000.0f;
ostate->x += ostate->vel_x * seconds;
ostate->y += ostate->vel_y * seconds;
if (ostate->y > height - 128) {
ostate->vel_y = -ostate->vel_y;
} else {
ostate->vel_y += 50 * seconds;
}
if (ostate->x > width - 128 || ostate->x < 0) {
ostate->vel_x = -ostate->vel_x;
}
ostate->last_frame = now;
2017-06-05 12:48:51 +02:00
}
static void output_add(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct state *state = wl_container_of(listener, state, output_add);
fprintf(stderr, "Output '%s' added\n", output->name);
wlr_output_set_mode(output, output->modes->items[0]);
struct output_state *ostate = calloc(1, sizeof(struct output_state));
clock_gettime(CLOCK_MONOTONIC, &ostate->last_frame);
2017-06-05 12:48:51 +02:00
ostate->output = output;
ostate->state = state;
ostate->frame.notify = output_frame;
ostate->x = ostate->y = 0;
ostate->vel_x = 100;
ostate->vel_y = 0;
2017-06-05 12:48:51 +02:00
struct output_config *conf;
wl_list_for_each(conf, &state->config, link) {
if (strcmp(conf->name, output->name) == 0) {
wlr_output_transform(ostate->output, conf->transform);
2017-06-05 12:48:51 +02:00
break;
}
}
wl_list_init(&ostate->frame.link);
wl_signal_add(&output->events.frame, &ostate->frame);
wl_list_insert(&state->outputs, &ostate->link);
}
static void output_remove(struct wl_listener *listener, void *data) {
struct wlr_output *output = data;
struct state *state = wl_container_of(listener, state, output_remove);
struct output_state *ostate;
wl_list_for_each(ostate, &state->outputs, link) {
if (ostate->output == output) {
wl_list_remove(&ostate->link);
wl_list_remove(&ostate->frame.link);
free(ostate);
break;
}
}
}
static int timer_done(void *data) {
*(bool *)data = true;
return 1;
}
static void usage(const char *name, int ret) {
fprintf(stderr,
"usage: %s [-d <name> [-r <rotation> | -f]]*\n"
"\n"
2017-06-06 17:25:36 +02:00
" -o <output> The name of the DRM display. e.g. DVI-I-1.\n"
2017-06-05 12:48:51 +02:00
" -r <rotation> The rotation counter clockwise. Valid values are 90, 180, 270.\n"
" -f Flip the output along the vertical axis.\n", name);
exit(ret);
}
static void parse_args(int argc, char *argv[], struct wl_list *config) {
struct output_config *oc = NULL;
int c;
while ((c = getopt(argc, argv, "o:r:fh")) != -1) {
switch (c) {
case 'o':
oc = calloc(1, sizeof(*oc));
oc->name = optarg;
oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
wl_list_insert(config, &oc->link);
break;
case 'r':
if (!oc) {
fprintf(stderr, "You must specify an output first\n");
usage(argv[0], 1);
}
if (oc->transform != WL_OUTPUT_TRANSFORM_NORMAL
&& oc->transform != WL_OUTPUT_TRANSFORM_FLIPPED) {
fprintf(stderr, "Rotation for %s already specified\n", oc->name);
usage(argv[0], 1);
}
if (strcmp(optarg, "90") == 0) {
oc->transform += WL_OUTPUT_TRANSFORM_90;
} else if (strcmp(optarg, "180") == 0) {
oc->transform += WL_OUTPUT_TRANSFORM_180;
} else if (strcmp(optarg, "270") == 0) {
oc->transform += WL_OUTPUT_TRANSFORM_270;
} else {
fprintf(stderr, "Invalid rotation '%s'\n", optarg);
usage(argv[0], 1);
}
break;
case 'f':
if (!oc) {
fprintf(stderr, "You must specify an output first\n");
usage(argv[0], 1);
}
if (oc->transform >= WL_OUTPUT_TRANSFORM_FLIPPED) {
fprintf(stderr, "Flip for %s already specified\n", oc->name);
usage(argv[0], 1);
}
oc->transform += WL_OUTPUT_TRANSFORM_FLIPPED;
break;
case 'h':
case '?':
usage(argv[0], c != 'h');
}
}
}
int main(int argc, char *argv[]) {
struct state state = {
.output_add = { .notify = output_add },
.output_remove = { .notify = output_remove }
};
wl_list_init(&state.outputs);
wl_list_init(&state.config);
wl_list_init(&state.output_add.link);
wl_list_init(&state.output_remove.link);
parse_args(argc, argv, &state.config);
struct wl_display *display = wl_display_create();
struct wl_event_loop *event_loop = wl_display_get_event_loop(display);
struct wlr_session *session = wlr_session_start(display);
if (!session) {
return 1;
}
struct wlr_backend *wlr = wlr_backend_autocreate(display, session);
if (!wlr) {
return 1;
}
wl_signal_add(&wlr->events.output_add, &state.output_add);
wl_signal_add(&wlr->events.output_remove, &state.output_remove);
if (!wlr_backend_init(wlr)) {
return 1;
}
init_gl(&state.gl);
bool done = false;
struct wl_event_source *timer = wl_event_loop_add_timer(event_loop,
timer_done, &done);
wl_event_source_timer_update(timer, 30000);
2017-06-05 12:48:51 +02:00
while (!done) {
wl_event_loop_dispatch(event_loop, 0);
}
cleanup_gl(&state.gl);
wl_event_source_remove(timer);
wlr_backend_destroy(wlr);
wlr_session_finish(session);
wl_display_destroy(display);
struct output_config *ptr, *tmp;
wl_list_for_each_safe(ptr, tmp, &state.config, link) {
free(ptr);
}
}