wlroots/render/gles2/texture.c

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#include <assert.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
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#include <stdint.h>
#include <stdlib.h>
#include <wayland-server-protocol.h>
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#include <wayland-util.h>
#include <wlr/render/wlr_texture.h>
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#include <wlr/render/egl.h>
#include <wlr/render/interface.h>
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#include <wlr/types/wlr_matrix.h>
#include <wlr/util/log.h>
#include "render/gles2.h"
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#include "util/signal.h"
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static struct gles2_pixel_format external_pixel_format = {
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.wl_format = 0,
.depth = 0,
.bpp = 0,
.gl_format = 0,
.gl_type = 0,
};
static void gles2_texture_ensure(struct wlr_gles2_texture *texture,
GLenum target) {
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if (texture->tex_id) {
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return;
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}
texture->target = target;
glGenTextures(1, &texture->tex_id);
glBindTexture(target, texture->tex_id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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}
static const struct wlr_texture_impl texture_impl;
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;
}
static bool gles2_texture_upload_pixels(struct wlr_texture *wlr_texture,
enum wl_shm_format format, int stride, int width, int height,
const unsigned char *pixels) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
const struct gles2_pixel_format *fmt = gles2_format_from_wl(format);
if (!fmt || !fmt->gl_format) {
wlr_log(L_ERROR, "No supported pixel format for this texture");
return false;
}
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texture->wlr_texture.width = width;
texture->wlr_texture.height = height;
texture->wlr_texture.format = format;
texture->pixel_format = fmt;
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GLES2_DEBUG_PUSH;
gles2_texture_ensure(texture, GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture->tex_id);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride);
glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0,
fmt->gl_format, fmt->gl_type, pixels);
GLES2_DEBUG_POP;
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texture->wlr_texture.valid = true;
return true;
}
static bool gles2_texture_update_pixels(struct wlr_texture *wlr_texture,
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enum wl_shm_format format, int stride, int x, int y,
int width, int height, const unsigned char *pixels) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
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// TODO: Test if the unpack subimage extension is supported and adjust the
// upload strategy if not
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if (!texture->wlr_texture.valid
|| texture->wlr_texture.format != format
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/* || unpack not supported */) {
return gles2_texture_upload_pixels(&texture->wlr_texture, format,
stride, width, height, pixels);
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}
const struct gles2_pixel_format *fmt = texture->pixel_format;
GLES2_DEBUG_PUSH;
glBindTexture(GL_TEXTURE_2D, texture->tex_id);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, x);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, y);
glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height, fmt->gl_format,
fmt->gl_type, pixels);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
GLES2_DEBUG_POP;
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return true;
}
static bool gles2_texture_upload_shm(struct wlr_texture *wlr_texture,
uint32_t format, struct wl_shm_buffer *buffer) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
const struct gles2_pixel_format *fmt = gles2_format_from_wl(format);
if (!fmt || !fmt->gl_format) {
wlr_log(L_ERROR, "Unsupported pixel format %"PRIu32" for this texture",
format);
return false;
}
wl_shm_buffer_begin_access(buffer);
uint8_t *pixels = wl_shm_buffer_get_data(buffer);
int width = wl_shm_buffer_get_width(buffer);
int height = wl_shm_buffer_get_height(buffer);
int pitch = wl_shm_buffer_get_stride(buffer) / (fmt->bpp / 8);
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texture->wlr_texture.width = width;
texture->wlr_texture.height = height;
texture->wlr_texture.format = format;
texture->pixel_format = fmt;
GLES2_DEBUG_PUSH;
gles2_texture_ensure(texture, GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture->tex_id);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, pitch);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0,
fmt->gl_format, fmt->gl_type, pixels);
GLES2_DEBUG_POP;
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texture->wlr_texture.valid = true;
wl_shm_buffer_end_access(buffer);
return true;
}
static bool gles2_texture_update_shm(struct wlr_texture *wlr_texture,
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uint32_t format, int x, int y, int width, int height,
struct wl_shm_buffer *buffer) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
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// TODO: Test if the unpack subimage extension is supported and adjust the
// upload strategy if not
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assert(texture);
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if (!texture->wlr_texture.valid
|| texture->wlr_texture.format != format
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/* || unpack not supported */) {
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return gles2_texture_upload_shm(&texture->wlr_texture, format, buffer);
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}
const struct gles2_pixel_format *fmt = texture->pixel_format;
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wl_shm_buffer_begin_access(buffer);
uint8_t *pixels = wl_shm_buffer_get_data(buffer);
int pitch = wl_shm_buffer_get_stride(buffer) / (fmt->bpp / 8);
GLES2_DEBUG_PUSH;
glBindTexture(GL_TEXTURE_2D, texture->tex_id);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, pitch);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, x);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, y);
glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height,
fmt->gl_format, fmt->gl_type, pixels);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
GLES2_DEBUG_POP;
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wl_shm_buffer_end_access(buffer);
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return true;
}
static bool gles2_texture_upload_drm(struct wlr_texture *wlr_texture,
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struct wl_resource *buf) {
struct wlr_gles2_texture *tex = gles2_get_texture(wlr_texture);
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if (!glEGLImageTargetTexture2DOES) {
return false;
}
EGLint format;
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if (!wlr_egl_query_buffer(tex->egl, buf, EGL_TEXTURE_FORMAT, &format)) {
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wlr_log(L_INFO, "upload_drm called with no drm buffer");
return false;
}
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wlr_egl_query_buffer(tex->egl, buf, EGL_WIDTH,
(EGLint*)&tex->wlr_texture.width);
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wlr_egl_query_buffer(tex->egl, buf, EGL_HEIGHT,
(EGLint*)&tex->wlr_texture.height);
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EGLint inverted_y;
if (wlr_egl_query_buffer(tex->egl, buf, EGL_WAYLAND_Y_INVERTED_WL,
&inverted_y)) {
tex->wlr_texture.inverted_y = !!inverted_y;
}
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GLenum target;
const struct gles2_pixel_format *pf;
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switch (format) {
case EGL_TEXTURE_RGB:
case EGL_TEXTURE_RGBA:
target = GL_TEXTURE_2D;
pf = gles2_format_from_wl(WL_SHM_FORMAT_ARGB8888);
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break;
case EGL_TEXTURE_EXTERNAL_WL:
target = GL_TEXTURE_EXTERNAL_OES;
pf = &external_pixel_format;
break;
default:
wlr_log(L_ERROR, "invalid/unsupported egl buffer format");
return false;
}
GLES2_DEBUG_PUSH;
gles2_texture_ensure(tex, target);
glBindTexture(GL_TEXTURE_2D, tex->tex_id);
GLES2_DEBUG_POP;
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EGLint attribs[] = { EGL_WAYLAND_PLANE_WL, 0, EGL_NONE };
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if (tex->image) {
wlr_egl_destroy_image(tex->egl, tex->image);
}
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tex->image = wlr_egl_create_image(tex->egl, EGL_WAYLAND_BUFFER_WL,
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(EGLClientBuffer*) buf, attribs);
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if (!tex->image) {
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wlr_log(L_ERROR, "failed to create EGL image");
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return false;
}
GLES2_DEBUG_PUSH;
glActiveTexture(GL_TEXTURE0);
glBindTexture(target, tex->tex_id);
glEGLImageTargetTexture2DOES(target, tex->image);
GLES2_DEBUG_POP;
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tex->wlr_texture.valid = true;
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tex->pixel_format = pf;
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return true;
}
static bool gles2_texture_upload_eglimage(struct wlr_texture *wlr_texture,
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EGLImageKHR image, uint32_t width, uint32_t height) {
struct wlr_gles2_texture *tex = gles2_get_texture(wlr_texture);
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tex->image = image;
tex->pixel_format = &external_pixel_format;
tex->wlr_texture.valid = true;
tex->wlr_texture.width = width;
tex->wlr_texture.height = height;
GLES2_DEBUG_PUSH;
gles2_texture_ensure(tex, GL_TEXTURE_2D);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, tex->tex_id);
glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, tex->image);
GLES2_DEBUG_POP;
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return true;
}
static bool gles2_texture_upload_dmabuf(struct wlr_texture *wlr_texture,
struct wl_resource *dmabuf_resource) {
struct wlr_gles2_texture *tex = gles2_get_texture(wlr_texture);
struct wlr_dmabuf_buffer *dmabuf =
wlr_dmabuf_buffer_from_buffer_resource(dmabuf_resource);
if (!tex->egl->egl_exts.dmabuf_import) {
wlr_log(L_ERROR, "Want dmabuf but extension not present");
return false;
}
tex->wlr_texture.width = dmabuf->attributes.width;
tex->wlr_texture.height = dmabuf->attributes.height;
if (tex->image) {
wlr_egl_destroy_image(tex->egl, tex->image);
}
if (wlr_dmabuf_buffer_has_inverted_y(dmabuf)) {
wlr_texture->inverted_y = true;
}
GLenum target = GL_TEXTURE_2D;
const struct gles2_pixel_format *pf =
gles2_format_from_wl(WL_SHM_FORMAT_ARGB8888);
GLES2_DEBUG_PUSH;
gles2_texture_ensure(tex, target);
glBindTexture(target, tex->tex_id);
tex->image = wlr_egl_create_image_from_dmabuf(tex->egl, &dmabuf->attributes);
glActiveTexture(GL_TEXTURE0);
glEGLImageTargetTexture2DOES(target, tex->image);
GLES2_DEBUG_POP;
tex->pixel_format = pf;
tex->wlr_texture.valid = true;
return true;
}
static bool gles2_texture_get_dmabuf_size(struct wlr_texture *texture, struct
wl_resource *resource, int *width, int *height) {
if (!wlr_dmabuf_resource_is_buffer(resource)) {
return false;
}
struct wlr_dmabuf_buffer *dmabuf =
wlr_dmabuf_buffer_from_buffer_resource(resource);
*width = dmabuf->attributes.width;
*height = dmabuf->attributes.height;
return true;
}
static void gles2_texture_get_buffer_size(struct wlr_texture *texture,
struct wl_resource *resource, int *width, int *height) {
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struct wl_shm_buffer *buffer = wl_shm_buffer_get(resource);
if (!buffer) {
struct wlr_gles2_texture *tex = (struct wlr_gles2_texture *)texture;
if (!glEGLImageTargetTexture2DOES) {
return;
}
if (!wlr_egl_query_buffer(tex->egl, resource, EGL_WIDTH,
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(EGLint*)width)) {
if (!gles2_texture_get_dmabuf_size(texture, resource, width,
height)) {
wlr_log(L_ERROR, "could not get size of the buffer");
return;
}
}
wlr_egl_query_buffer(tex->egl, resource, EGL_HEIGHT, (EGLint*)height);
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return;
}
*width = wl_shm_buffer_get_width(buffer);
*height = wl_shm_buffer_get_height(buffer);
}
static void gles2_texture_destroy(struct wlr_texture *wlr_texture) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
wlr_signal_emit_safe(&texture->wlr_texture.destroy_signal,
&texture->wlr_texture);
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if (texture->tex_id) {
GLES2_DEBUG_PUSH;
glDeleteTextures(1, &texture->tex_id);
GLES2_DEBUG_POP;
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}
if (texture->image) {
wlr_egl_destroy_image(texture->egl, texture->image);
}
free(texture);
}
static const struct wlr_texture_impl texture_impl = {
.upload_pixels = gles2_texture_upload_pixels,
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.update_pixels = gles2_texture_update_pixels,
.upload_shm = gles2_texture_upload_shm,
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.update_shm = gles2_texture_update_shm,
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.upload_drm = gles2_texture_upload_drm,
.upload_dmabuf = gles2_texture_upload_dmabuf,
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.upload_eglimage = gles2_texture_upload_eglimage,
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.get_buffer_size = gles2_texture_get_buffer_size,
.destroy = gles2_texture_destroy,
};
struct wlr_texture *gles2_texture_create(struct wlr_egl *egl) {
struct wlr_gles2_texture *texture;
if (!(texture = calloc(1, sizeof(struct wlr_gles2_texture)))) {
return NULL;
}
wlr_texture_init(&texture->wlr_texture, &texture_impl);
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texture->egl = egl;
return &texture->wlr_texture;
}