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#include <assert.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <stdint.h>
#include <stdlib.h>
#include <wayland-server-protocol.h>
#include <wayland-util.h>
#include <wlr/render/wlr_texture.h>
#include <wlr/render/egl.h>
#include <wlr/render/interface.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/util/log.h>
#include "glapi.h"
#include "render/gles2.h"
#include "util/signal.h"
static const struct wlr_texture_impl texture_impl;
static struct wlr_gles2_texture *gles2_get_texture(
struct wlr_texture *wlr_texture) {
assert(wlr_texture->impl == &texture_impl);
return (struct wlr_gles2_texture *)wlr_texture;
}
struct wlr_gles2_texture *gles2_get_texture_in_context(
struct wlr_texture *wlr_texture) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
assert(wlr_egl_is_current(texture->egl));
return texture;
}
static void gles2_texture_get_size(struct wlr_texture *wlr_texture, int *width,
int *height) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
*width = texture->width;
*height = texture->height;
}
static bool gles2_texture_write_pixels(struct wlr_texture *wlr_texture,
enum wl_shm_format wl_fmt, uint32_t stride, uint32_t width,
uint32_t height, uint32_t src_x, uint32_t src_y, uint32_t dst_x,
uint32_t dst_y, const void *data) {
struct wlr_gles2_texture *texture =
gles2_get_texture_in_context(wlr_texture);
if (texture->type != WLR_GLES2_TEXTURE_GLTEX) {
wlr_log(L_ERROR, "Cannot write pixels to immutable texture");
return false;
}
const struct gles2_pixel_format *fmt = gles2_format_from_wl(wl_fmt);
if (fmt == NULL) {
wlr_log(L_ERROR, "Unsupported pixel format %"PRIu32, wl_fmt);
return false;
}
// TODO: what if the unpack subimage extension isn't supported?
GLES2_DEBUG_PUSH;
glBindTexture(GL_TEXTURE_2D, texture->gl_tex);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / (fmt->bpp / 8));
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, src_x);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, src_y);
glTexSubImage2D(GL_TEXTURE_2D, 0, dst_x, dst_y, width, height,
fmt->gl_format, fmt->gl_type, data);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
GLES2_DEBUG_POP;
return true;
}
static void gles2_texture_destroy(struct wlr_texture *wlr_texture) {
if (wlr_texture == NULL) {
return;
}
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
wlr_egl_make_current(texture->egl, EGL_NO_SURFACE, NULL);
GLES2_DEBUG_PUSH;
if (texture->image_tex) {
glDeleteTextures(1, &texture->image_tex);
}
wlr_egl_destroy_image(texture->egl, texture->image);
if (texture->type == WLR_GLES2_TEXTURE_GLTEX) {
glDeleteTextures(1, &texture->gl_tex);
}
GLES2_DEBUG_POP;
free(texture);
}
static const struct wlr_texture_impl texture_impl = {
.get_size = gles2_texture_get_size,
.write_pixels = gles2_texture_write_pixels,
.destroy = gles2_texture_destroy,
};
struct wlr_texture *wlr_gles2_texture_from_pixels(struct wlr_egl *egl,
enum wl_shm_format wl_fmt, uint32_t stride, uint32_t width,
uint32_t height, const void *data) {
assert(wlr_egl_is_current(egl));
const struct gles2_pixel_format *fmt = gles2_format_from_wl(wl_fmt);
if (fmt == NULL) {
wlr_log(L_ERROR, "Unsupported pixel format %"PRIu32, wl_fmt);
return NULL;
}
struct wlr_gles2_texture *texture =
calloc(1, sizeof(struct wlr_gles2_texture));
if (texture == NULL) {
wlr_log(L_ERROR, "Allocation failed");
return NULL;
}
wlr_texture_init(&texture->wlr_texture, &texture_impl);
texture->egl = egl;
texture->width = width;
texture->height = height;
texture->type = WLR_GLES2_TEXTURE_GLTEX;
texture->has_alpha = fmt->has_alpha;
GLES2_DEBUG_PUSH;
glGenTextures(1, &texture->gl_tex);
glBindTexture(GL_TEXTURE_2D, texture->gl_tex);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / (fmt->bpp / 8));
glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0,
fmt->gl_format, fmt->gl_type, data);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
GLES2_DEBUG_POP;
return &texture->wlr_texture;
}
struct wlr_texture *wlr_gles2_texture_from_wl_drm(struct wlr_egl *egl,
struct wl_resource *data) {
assert(wlr_egl_is_current(egl));
if (!glEGLImageTargetTexture2DOES) {
return NULL;
}
struct wlr_gles2_texture *texture =
calloc(1, sizeof(struct wlr_gles2_texture));
if (texture == NULL) {
wlr_log(L_ERROR, "Allocation failed");
return NULL;
}
wlr_texture_init(&texture->wlr_texture, &texture_impl);
texture->egl = egl;
texture->wl_drm = data;
EGLint fmt;
texture->image = wlr_egl_create_image_from_wl_drm(egl, data, &fmt,
&texture->width, &texture->height, &texture->inverted_y);
if (texture->image == NULL) {
free(texture);
return NULL;
}
GLenum target;
switch (fmt) {
case EGL_TEXTURE_RGB:
case EGL_TEXTURE_RGBA:
target = GL_TEXTURE_2D;
texture->type = WLR_GLES2_TEXTURE_WL_DRM_GL;
texture->has_alpha = fmt == EGL_TEXTURE_RGBA;
break;
case EGL_TEXTURE_EXTERNAL_WL:
target = GL_TEXTURE_EXTERNAL_OES;
texture->type = WLR_GLES2_TEXTURE_WL_DRM_EXT;
texture->has_alpha = true;
break;
default:
wlr_log(L_ERROR, "Invalid or unsupported EGL buffer format");
free(texture);
return NULL;
}
GLES2_DEBUG_PUSH;
glGenTextures(1, &texture->image_tex);
glBindTexture(target, texture->image_tex);
glEGLImageTargetTexture2DOES(target, texture->image);
GLES2_DEBUG_POP;
return &texture->wlr_texture;
}
struct wlr_texture *wlr_gles2_texture_from_dmabuf(struct wlr_egl *egl,
struct wlr_dmabuf_buffer_attribs *attribs) {
assert(wlr_egl_is_current(egl));
if (!glEGLImageTargetTexture2DOES) {
return NULL;
}
if (!egl->egl_exts.dmabuf_import) {
wlr_log(L_ERROR, "Cannot create DMA-BUF texture: EGL extension "
"unavailable");
return NULL;
}
struct wlr_gles2_texture *texture =
calloc(1, sizeof(struct wlr_gles2_texture));
if (texture == NULL) {
wlr_log(L_ERROR, "Allocation failed");
return NULL;
}
wlr_texture_init(&texture->wlr_texture, &texture_impl);
texture->egl = egl;
texture->width = attribs->width;
texture->height = attribs->height;
texture->type = WLR_GLES2_TEXTURE_DMABUF;
texture->has_alpha = true;
texture->inverted_y =
(attribs->flags & WLR_DMABUF_BUFFER_ATTRIBS_FLAGS_Y_INVERT) != 0;
texture->image = wlr_egl_create_image_from_dmabuf(egl, attribs);
if (texture->image == NULL) {
free(texture);
return NULL;
}
GLES2_DEBUG_PUSH;
glGenTextures(1, &texture->image_tex);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, texture->image_tex);
glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, texture->image);
GLES2_DEBUG_POP;
return &texture->wlr_texture;
}
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