wlroots-hyprland/render/gles2/texture.c

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#include <assert.h>
#include <drm_fourcc.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>
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#include <wlr/render/egl.h>
#include <wlr/render/interface.h>
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#include <wlr/render/wlr_texture.h>
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#include <wlr/types/wlr_matrix.h>
#include <wlr/util/log.h>
#include "render/egl.h"
#include "render/gles2.h"
#include "render/pixel_format.h"
#include "types/wlr_buffer.h"
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#include "util/signal.h"
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static const struct wlr_texture_impl texture_impl;
bool wlr_texture_is_gles2(struct wlr_texture *wlr_texture) {
return wlr_texture->impl == &texture_impl;
}
struct wlr_gles2_texture *gles2_get_texture(
struct wlr_texture *wlr_texture) {
assert(wlr_texture_is_gles2(wlr_texture));
return (struct wlr_gles2_texture *)wlr_texture;
}
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static bool gles2_texture_is_opaque(struct wlr_texture *wlr_texture) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
return !texture->has_alpha;
}
static bool check_stride(const struct wlr_pixel_format_info *fmt,
uint32_t stride, uint32_t width) {
if (stride % (fmt->bpp / 8) != 0) {
wlr_log(WLR_ERROR, "Invalid stride %d (incompatible with %d "
"bytes-per-pixel)", stride, fmt->bpp / 8);
return false;
}
if (stride < width * (fmt->bpp / 8)) {
wlr_log(WLR_ERROR, "Invalid stride %d (too small for %d "
"bytes-per-pixel and width %d)", stride, fmt->bpp / 8, width);
return false;
}
return true;
}
static bool gles2_texture_write_pixels(struct wlr_texture *wlr_texture,
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(wlr_texture);
if (texture->target != GL_TEXTURE_2D || texture->image != EGL_NO_IMAGE_KHR) {
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wlr_log(WLR_ERROR, "Cannot write pixels to immutable texture");
return false;
}
const struct wlr_gles2_pixel_format *fmt =
get_gles2_format_from_drm(texture->drm_format);
assert(fmt);
const struct wlr_pixel_format_info *drm_fmt =
drm_get_pixel_format_info(texture->drm_format);
assert(drm_fmt);
if (!check_stride(drm_fmt, stride, width)) {
return false;
}
struct wlr_egl_context prev_ctx;
wlr_egl_save_context(&prev_ctx);
wlr_egl_make_current(texture->renderer->egl);
push_gles2_debug(texture->renderer);
glBindTexture(GL_TEXTURE_2D, texture->tex);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / (drm_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);
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glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
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glBindTexture(GL_TEXTURE_2D, 0);
pop_gles2_debug(texture->renderer);
wlr_egl_restore_context(&prev_ctx);
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return true;
}
static bool gles2_texture_invalidate(struct wlr_gles2_texture *texture) {
if (texture->image == EGL_NO_IMAGE_KHR) {
return false;
}
if (texture->target == GL_TEXTURE_EXTERNAL_OES) {
// External changes are immediately made visible by the GL implementation
return true;
}
struct wlr_egl_context prev_ctx;
wlr_egl_save_context(&prev_ctx);
wlr_egl_make_current(texture->renderer->egl);
push_gles2_debug(texture->renderer);
glBindTexture(texture->target, texture->tex);
texture->renderer->procs.glEGLImageTargetTexture2DOES(texture->target,
texture->image);
glBindTexture(texture->target, 0);
pop_gles2_debug(texture->renderer);
wlr_egl_restore_context(&prev_ctx);
return true;
}
void gles2_texture_destroy(struct wlr_gles2_texture *texture) {
wl_list_remove(&texture->link);
if (texture->buffer != NULL) {
wlr_addon_finish(&texture->buffer_addon);
}
struct wlr_egl_context prev_ctx;
wlr_egl_save_context(&prev_ctx);
wlr_egl_make_current(texture->renderer->egl);
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push_gles2_debug(texture->renderer);
glDeleteTextures(1, &texture->tex);
wlr_egl_destroy_image(texture->renderer->egl, texture->image);
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pop_gles2_debug(texture->renderer);
wlr_egl_restore_context(&prev_ctx);
free(texture);
}
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static void gles2_texture_unref(struct wlr_texture *wlr_texture) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
if (texture->buffer != NULL) {
// Keep the texture around, in case the buffer is re-used later. We're
// still listening to the buffer's destroy event.
wlr_buffer_unlock(texture->buffer);
} else {
gles2_texture_destroy(texture);
}
}
static const struct wlr_texture_impl texture_impl = {
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.is_opaque = gles2_texture_is_opaque,
.write_pixels = gles2_texture_write_pixels,
.destroy = gles2_texture_unref,
};
static struct wlr_gles2_texture *gles2_texture_create(
struct wlr_gles2_renderer *renderer, uint32_t width, uint32_t height) {
struct wlr_gles2_texture *texture =
calloc(1, sizeof(struct wlr_gles2_texture));
if (texture == NULL) {
wlr_log_errno(WLR_ERROR, "Allocation failed");
return NULL;
}
wlr_texture_init(&texture->wlr_texture, &texture_impl, width, height);
texture->renderer = renderer;
wl_list_insert(&renderer->textures, &texture->link);
return texture;
}
static struct wlr_texture *gles2_texture_from_pixels(
struct wlr_renderer *wlr_renderer,
uint32_t drm_format, uint32_t stride, uint32_t width,
uint32_t height, const void *data) {
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
const struct wlr_gles2_pixel_format *fmt =
get_gles2_format_from_drm(drm_format);
if (fmt == NULL) {
wlr_log(WLR_ERROR, "Unsupported pixel format 0x%"PRIX32, drm_format);
return NULL;
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}
const struct wlr_pixel_format_info *drm_fmt =
drm_get_pixel_format_info(drm_format);
assert(drm_fmt);
if (!check_stride(drm_fmt, stride, width)) {
return NULL;
}
struct wlr_gles2_texture *texture =
gles2_texture_create(renderer, width, height);
if (texture == NULL) {
return NULL;
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}
texture->target = GL_TEXTURE_2D;
texture->has_alpha = fmt->has_alpha;
texture->drm_format = fmt->drm_format;
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struct wlr_egl_context prev_ctx;
wlr_egl_save_context(&prev_ctx);
wlr_egl_make_current(renderer->egl);
push_gles2_debug(renderer);
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glGenTextures(1, &texture->tex);
glBindTexture(GL_TEXTURE_2D, texture->tex);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / (drm_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);
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glBindTexture(GL_TEXTURE_2D, 0);
pop_gles2_debug(renderer);
wlr_egl_restore_context(&prev_ctx);
return &texture->wlr_texture;
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}
static struct wlr_texture *gles2_texture_from_dmabuf(
struct wlr_renderer *wlr_renderer,
struct wlr_dmabuf_attributes *attribs) {
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
if (!renderer->procs.glEGLImageTargetTexture2DOES) {
return NULL;
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}
struct wlr_gles2_texture *texture =
gles2_texture_create(renderer, attribs->width, attribs->height);
if (texture == NULL) {
return NULL;
}
texture->drm_format = DRM_FORMAT_INVALID; // texture can't be written anyways
texture->inverted_y =
(attribs->flags & WLR_DMABUF_ATTRIBUTES_FLAGS_Y_INVERT) != 0;
const struct wlr_pixel_format_info *drm_fmt =
drm_get_pixel_format_info(attribs->format);
if (drm_fmt != NULL) {
texture->has_alpha = drm_fmt->has_alpha;
} else {
// We don't know, assume the texture has an alpha channel
texture->has_alpha = true;
}
struct wlr_egl_context prev_ctx;
wlr_egl_save_context(&prev_ctx);
wlr_egl_make_current(renderer->egl);
bool external_only;
texture->image =
wlr_egl_create_image_from_dmabuf(renderer->egl, attribs, &external_only);
if (texture->image == EGL_NO_IMAGE_KHR) {
wlr_log(WLR_ERROR, "Failed to create EGL image from DMA-BUF");
wlr_egl_restore_context(&prev_ctx);
wl_list_remove(&texture->link);
free(texture);
return NULL;
}
texture->target = external_only ? GL_TEXTURE_EXTERNAL_OES : GL_TEXTURE_2D;
push_gles2_debug(renderer);
glGenTextures(1, &texture->tex);
glBindTexture(texture->target, texture->tex);
glTexParameteri(texture->target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(texture->target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
renderer->procs.glEGLImageTargetTexture2DOES(texture->target, texture->image);
glBindTexture(texture->target, 0);
pop_gles2_debug(renderer);
wlr_egl_restore_context(&prev_ctx);
return &texture->wlr_texture;
}
static void texture_handle_buffer_destroy(struct wlr_addon *addon) {
struct wlr_gles2_texture *texture =
wl_container_of(addon, texture, buffer_addon);
gles2_texture_destroy(texture);
}
static const struct wlr_addon_interface texture_addon_impl = {
.name = "wlr_gles2_texture",
.destroy = texture_handle_buffer_destroy,
};
static struct wlr_texture *gles2_texture_from_dmabuf_buffer(
struct wlr_gles2_renderer *renderer, struct wlr_buffer *buffer,
struct wlr_dmabuf_attributes *dmabuf) {
struct wlr_addon *addon =
wlr_addon_find(&buffer->addons, renderer, &texture_addon_impl);
if (addon != NULL) {
struct wlr_gles2_texture *texture =
wl_container_of(addon, texture, buffer_addon);
if (!gles2_texture_invalidate(texture)) {
wlr_log(WLR_ERROR, "Failed to invalidate texture");
return false;
}
wlr_buffer_lock(texture->buffer);
return &texture->wlr_texture;
}
struct wlr_texture *wlr_texture =
gles2_texture_from_dmabuf(&renderer->wlr_renderer, dmabuf);
if (wlr_texture == NULL) {
return false;
}
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
texture->buffer = wlr_buffer_lock(buffer);
wlr_addon_init(&texture->buffer_addon, &buffer->addons,
renderer, &texture_addon_impl);
return &texture->wlr_texture;
}
struct wlr_texture *gles2_texture_from_buffer(struct wlr_renderer *wlr_renderer,
struct wlr_buffer *buffer) {
struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
void *data;
uint32_t format;
size_t stride;
struct wlr_dmabuf_attributes dmabuf;
if (wlr_buffer_get_dmabuf(buffer, &dmabuf)) {
return gles2_texture_from_dmabuf_buffer(renderer, buffer, &dmabuf);
} else if (buffer_begin_data_ptr_access(buffer,
WLR_BUFFER_DATA_PTR_ACCESS_READ, &data, &format, &stride)) {
struct wlr_texture *tex = gles2_texture_from_pixels(wlr_renderer,
format, stride, buffer->width, buffer->height, data);
buffer_end_data_ptr_access(buffer);
return tex;
} else {
return NULL;
}
}
void wlr_gles2_texture_get_attribs(struct wlr_texture *wlr_texture,
struct wlr_gles2_texture_attribs *attribs) {
struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
memset(attribs, 0, sizeof(*attribs));
attribs->target = texture->target;
attribs->tex = texture->tex;
attribs->inverted_y = texture->inverted_y;
attribs->has_alpha = texture->has_alpha;
}