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#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <GLES2/gl2.h>
#include <wayland-util.h>
#include <wayland-server-protocol.h>
#include <wlr/render.h>
#include <wlr/render/interface.h>
#include <wlr/render/matrix.h>
#include "render/gles2.h"
static bool gles2_surface_attach_pixels(struct wlr_surface_state *surface,
uint32_t format, int width, int height, const unsigned char *pixels) {
assert(surface);
surface->wlr_surface->width = width;
surface->wlr_surface->height = height;
surface->wlr_surface->format = format;
GL_CALL(glGenTextures(1, &surface->tex_id));
GL_CALL(glBindTexture(GL_TEXTURE_2D, surface->tex_id));
GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0,
format, GL_UNSIGNED_BYTE, pixels));
surface->wlr_surface->valid = true;
return true;
}
static void gles2_surface_get_matrix(struct wlr_surface_state *surface,
float (*matrix)[16], const float (*projection)[16], int x, int y) {
struct wlr_surface *_surface = surface->wlr_surface;
float world[16];
wlr_matrix_identity(matrix);
wlr_matrix_translate(&world, x, y, 0);
wlr_matrix_mul(matrix, &world, matrix);
wlr_matrix_scale(&world, _surface->width, _surface->height, 1);
wlr_matrix_mul(matrix, &world, matrix);
wlr_matrix_mul(projection, matrix, matrix);
}
static void gles2_surface_bind(struct wlr_surface_state *surface) {
GL_CALL(glActiveTexture(GL_TEXTURE0 + 1));
GL_CALL(glBindTexture(GL_TEXTURE_2D, surface->tex_id));
GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR));
GL_CALL(glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
}
static void gles2_surface_destroy(struct wlr_surface_state *surface) {
GL_CALL(glDeleteTextures(1, &surface->tex_id));
free(surface);
}
static struct wlr_surface_impl wlr_surface_impl = {
.attach_pixels = gles2_surface_attach_pixels,
// .attach_shm = TODO
.get_matrix = gles2_surface_get_matrix,
.bind = gles2_surface_bind,
.destroy = gles2_surface_destroy,
};
struct wlr_surface *gles2_surface_init() {
struct wlr_surface_state *state = calloc(sizeof(struct wlr_surface_state), 1);
struct wlr_surface *surface = wlr_surface_init(state, &wlr_surface_impl);
state->wlr_surface = surface;
return surface;
}
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