mirror of
https://github.com/hyprwm/wlroots-hyprland.git
synced 2024-12-23 10:29:49 +01:00
d5556ec78f
Saving the old context and immediately making our own context current is a common pattern. Let's make it easier to do. No functional change, just refactoring.
441 lines
13 KiB
C
441 lines
13 KiB
C
#include <assert.h>
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#include <drm_fourcc.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <wayland-server-protocol.h>
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#include <wayland-util.h>
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#include <wlr/render/egl.h>
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#include <wlr/render/interface.h>
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#include <wlr/render/wlr_texture.h>
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#include <wlr/util/log.h>
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#include "render/egl.h"
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#include "render/gles2.h"
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#include "render/pixel_format.h"
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#include "types/wlr_buffer.h"
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static const struct wlr_texture_impl texture_impl;
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bool wlr_texture_is_gles2(struct wlr_texture *wlr_texture) {
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return wlr_texture->impl == &texture_impl;
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}
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struct wlr_gles2_texture *gles2_get_texture(
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struct wlr_texture *wlr_texture) {
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assert(wlr_texture_is_gles2(wlr_texture));
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struct wlr_gles2_texture *texture = wl_container_of(wlr_texture, texture, wlr_texture);
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return texture;
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}
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static bool gles2_texture_update_from_buffer(struct wlr_texture *wlr_texture,
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struct wlr_buffer *buffer, const pixman_region32_t *damage) {
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struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
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if (texture->drm_format == DRM_FORMAT_INVALID) {
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return false;
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}
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void *data;
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uint32_t format;
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size_t stride;
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if (!wlr_buffer_begin_data_ptr_access(buffer,
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WLR_BUFFER_DATA_PTR_ACCESS_READ, &data, &format, &stride)) {
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return false;
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}
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if (format != texture->drm_format) {
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wlr_buffer_end_data_ptr_access(buffer);
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return false;
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}
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const struct wlr_gles2_pixel_format *fmt =
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get_gles2_format_from_drm(texture->drm_format);
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assert(fmt);
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const struct wlr_pixel_format_info *drm_fmt =
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drm_get_pixel_format_info(texture->drm_format);
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assert(drm_fmt);
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if (pixel_format_info_pixels_per_block(drm_fmt) != 1) {
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wlr_buffer_end_data_ptr_access(buffer);
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wlr_log(WLR_ERROR, "Cannot update texture: block formats are not supported");
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return false;
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}
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if (!pixel_format_info_check_stride(drm_fmt, stride, buffer->width)) {
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wlr_buffer_end_data_ptr_access(buffer);
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return false;
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}
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struct wlr_egl_context prev_ctx;
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wlr_egl_make_current(texture->renderer->egl, &prev_ctx);
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push_gles2_debug(texture->renderer);
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glBindTexture(GL_TEXTURE_2D, texture->tex);
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int rects_len = 0;
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const pixman_box32_t *rects = pixman_region32_rectangles(damage, &rects_len);
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for (int i = 0; i < rects_len; i++) {
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pixman_box32_t rect = rects[i];
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glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / drm_fmt->bytes_per_block);
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glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, rect.x1);
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glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, rect.y1);
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int width = rect.x2 - rect.x1;
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int height = rect.y2 - rect.y1;
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glTexSubImage2D(GL_TEXTURE_2D, 0, rect.x1, rect.y1, width, height,
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fmt->gl_format, fmt->gl_type, data);
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}
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glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
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glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
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glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0);
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glBindTexture(GL_TEXTURE_2D, 0);
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pop_gles2_debug(texture->renderer);
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wlr_egl_restore_context(&prev_ctx);
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wlr_buffer_end_data_ptr_access(buffer);
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return true;
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}
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void gles2_texture_destroy(struct wlr_gles2_texture *texture) {
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wl_list_remove(&texture->link);
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if (texture->buffer != NULL) {
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wlr_buffer_unlock(texture->buffer->buffer);
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} else {
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struct wlr_egl_context prev_ctx;
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wlr_egl_make_current(texture->renderer->egl, &prev_ctx);
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push_gles2_debug(texture->renderer);
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glDeleteTextures(1, &texture->tex);
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glDeleteFramebuffers(1, &texture->fbo);
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pop_gles2_debug(texture->renderer);
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wlr_egl_restore_context(&prev_ctx);
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}
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free(texture);
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}
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static void handle_gles2_texture_destroy(struct wlr_texture *wlr_texture) {
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gles2_texture_destroy(gles2_get_texture(wlr_texture));
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}
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static bool gles2_texture_bind(struct wlr_gles2_texture *texture) {
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if (texture->fbo) {
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glBindFramebuffer(GL_FRAMEBUFFER, texture->fbo);
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} else if (texture->buffer) {
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if (texture->buffer->external_only) {
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return false;
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}
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GLuint fbo = gles2_buffer_get_fbo(texture->buffer);
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if (!fbo) {
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return false;
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}
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glBindFramebuffer(GL_FRAMEBUFFER, fbo);
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} else {
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glGenFramebuffers(1, &texture->fbo);
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glBindFramebuffer(GL_FRAMEBUFFER, texture->fbo);
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glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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texture->target, texture->tex, 0);
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GLenum fb_status = glCheckFramebufferStatus(GL_FRAMEBUFFER);
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if (fb_status != GL_FRAMEBUFFER_COMPLETE) {
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wlr_log(WLR_ERROR, "Failed to create FBO");
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glDeleteFramebuffers(1, &texture->fbo);
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texture->fbo = 0;
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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return false;
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}
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}
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return true;
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}
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static bool gles2_texture_read_pixels(struct wlr_texture *wlr_texture,
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const struct wlr_texture_read_pixels_options *options) {
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struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
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struct wlr_box src;
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wlr_texture_read_pixels_options_get_src_box(options, wlr_texture, &src);
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const struct wlr_gles2_pixel_format *fmt =
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get_gles2_format_from_drm(options->format);
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if (fmt == NULL || !is_gles2_pixel_format_supported(texture->renderer, fmt)) {
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wlr_log(WLR_ERROR, "Cannot read pixels: unsupported pixel format 0x%"PRIX32, options->format);
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return false;
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}
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if (fmt->gl_format == GL_BGRA_EXT && !texture->renderer->exts.EXT_read_format_bgra) {
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wlr_log(WLR_ERROR,
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"Cannot read pixels: missing GL_EXT_read_format_bgra extension");
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return false;
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}
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const struct wlr_pixel_format_info *drm_fmt =
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drm_get_pixel_format_info(fmt->drm_format);
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assert(drm_fmt);
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if (pixel_format_info_pixels_per_block(drm_fmt) != 1) {
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wlr_log(WLR_ERROR, "Cannot read pixels: block formats are not supported");
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return false;
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}
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push_gles2_debug(texture->renderer);
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struct wlr_egl_context prev_ctx;
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if (!wlr_egl_make_current(texture->renderer->egl, &prev_ctx)) {
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return false;
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}
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if (!gles2_texture_bind(texture)) {
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return false;
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}
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// Make sure any pending drawing is finished before we try to read it
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glFinish();
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glGetError(); // Clear the error flag
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unsigned char *p = wlr_texture_read_pixel_options_get_data(options);
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glPixelStorei(GL_PACK_ALIGNMENT, 1);
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uint32_t pack_stride = pixel_format_info_min_stride(drm_fmt, src.width);
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if (pack_stride == options->stride && options->dst_x == 0) {
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// Under these particular conditions, we can read the pixels with only
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// one glReadPixels call
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glReadPixels(src.x, src.y, src.width, src.height, fmt->gl_format, fmt->gl_type, p);
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} else {
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// Unfortunately GLES2 doesn't support GL_PACK_ROW_LENGTH, so we have to read
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// the lines out row by row
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for (int32_t i = 0; i < src.height; ++i) {
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uint32_t y = src.y + i;
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glReadPixels(src.x, y, src.width, 1, fmt->gl_format,
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fmt->gl_type, p + i * options->stride);
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}
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}
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wlr_egl_restore_context(&prev_ctx);
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pop_gles2_debug(texture->renderer);
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return glGetError() == GL_NO_ERROR;
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}
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static uint32_t gles2_texture_preferred_read_format(struct wlr_texture *wlr_texture) {
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struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
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push_gles2_debug(texture->renderer);
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uint32_t fmt = DRM_FORMAT_INVALID;
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struct wlr_egl_context prev_ctx;
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if (!wlr_egl_make_current(texture->renderer->egl, &prev_ctx)) {
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return fmt;
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}
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if (!gles2_texture_bind(texture)) {
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goto out;
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}
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GLint gl_format = -1, gl_type = -1, alpha_size = -1;
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glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_FORMAT, &gl_format);
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glGetIntegerv(GL_IMPLEMENTATION_COLOR_READ_TYPE, &gl_type);
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glGetIntegerv(GL_ALPHA_BITS, &alpha_size);
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glBindFramebuffer(GL_FRAMEBUFFER, 0);
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pop_gles2_debug(texture->renderer);
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const struct wlr_gles2_pixel_format *pix_fmt =
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get_gles2_format_from_gl(gl_format, gl_type, alpha_size > 0);
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if (pix_fmt != NULL) {
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fmt = pix_fmt->drm_format;
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goto out;
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}
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if (texture->renderer->exts.EXT_read_format_bgra) {
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fmt = DRM_FORMAT_XRGB8888;
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goto out;
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}
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out:
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wlr_egl_restore_context(&prev_ctx);
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return fmt;
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}
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static const struct wlr_texture_impl texture_impl = {
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.update_from_buffer = gles2_texture_update_from_buffer,
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.read_pixels = gles2_texture_read_pixels,
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.preferred_read_format = gles2_texture_preferred_read_format,
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.destroy = handle_gles2_texture_destroy,
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};
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static struct wlr_gles2_texture *gles2_texture_create(
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struct wlr_gles2_renderer *renderer, uint32_t width, uint32_t height) {
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struct wlr_gles2_texture *texture = calloc(1, sizeof(*texture));
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if (texture == NULL) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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return NULL;
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}
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wlr_texture_init(&texture->wlr_texture, &renderer->wlr_renderer,
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&texture_impl, width, height);
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texture->renderer = renderer;
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wl_list_insert(&renderer->textures, &texture->link);
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return texture;
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}
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static struct wlr_texture *gles2_texture_from_pixels(
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struct wlr_renderer *wlr_renderer,
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uint32_t drm_format, uint32_t stride, uint32_t width,
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uint32_t height, const void *data) {
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struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
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const struct wlr_gles2_pixel_format *fmt =
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get_gles2_format_from_drm(drm_format);
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if (fmt == NULL) {
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wlr_log(WLR_ERROR, "Unsupported pixel format 0x%"PRIX32, drm_format);
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return NULL;
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}
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const struct wlr_pixel_format_info *drm_fmt =
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drm_get_pixel_format_info(drm_format);
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assert(drm_fmt);
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if (pixel_format_info_pixels_per_block(drm_fmt) != 1) {
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wlr_log(WLR_ERROR, "Cannot upload texture: block formats are not supported");
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return NULL;
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}
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if (!pixel_format_info_check_stride(drm_fmt, stride, width)) {
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return NULL;
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}
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struct wlr_gles2_texture *texture =
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gles2_texture_create(renderer, width, height);
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if (texture == NULL) {
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return NULL;
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}
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texture->target = GL_TEXTURE_2D;
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texture->has_alpha = pixel_format_has_alpha(fmt->drm_format);
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texture->drm_format = fmt->drm_format;
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GLint internal_format = fmt->gl_internalformat;
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if (!internal_format) {
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internal_format = fmt->gl_format;
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}
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struct wlr_egl_context prev_ctx;
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wlr_egl_make_current(renderer->egl, &prev_ctx);
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push_gles2_debug(renderer);
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glGenTextures(1, &texture->tex);
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glBindTexture(GL_TEXTURE_2D, texture->tex);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride / drm_fmt->bytes_per_block);
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glTexImage2D(GL_TEXTURE_2D, 0, internal_format, width, height, 0,
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fmt->gl_format, fmt->gl_type, data);
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glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
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glBindTexture(GL_TEXTURE_2D, 0);
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pop_gles2_debug(renderer);
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wlr_egl_restore_context(&prev_ctx);
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return &texture->wlr_texture;
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}
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static struct wlr_texture *gles2_texture_from_dmabuf(
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struct wlr_gles2_renderer *renderer, struct wlr_buffer *wlr_buffer,
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struct wlr_dmabuf_attributes *attribs) {
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if (!renderer->procs.glEGLImageTargetTexture2DOES) {
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return NULL;
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}
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struct wlr_gles2_buffer *buffer = gles2_buffer_get_or_create(renderer, wlr_buffer);
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if (!buffer) {
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return NULL;
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}
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struct wlr_gles2_texture *texture =
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gles2_texture_create(renderer, attribs->width, attribs->height);
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if (texture == NULL) {
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return NULL;
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}
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texture->target = buffer->external_only ? GL_TEXTURE_EXTERNAL_OES : GL_TEXTURE_2D;
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texture->buffer = buffer;
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texture->drm_format = DRM_FORMAT_INVALID; // texture can't be written anyways
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texture->has_alpha = pixel_format_has_alpha(attribs->format);
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struct wlr_egl_context prev_ctx;
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wlr_egl_make_current(renderer->egl, &prev_ctx);
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push_gles2_debug(texture->renderer);
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bool invalid;
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if (!buffer->tex) {
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glGenTextures(1, &buffer->tex);
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invalid = true;
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} else {
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// External changes are immediately made visible by the GL implementation
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invalid = !buffer->external_only;
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}
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if (invalid) {
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glBindTexture(texture->target, buffer->tex);
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glTexParameteri(texture->target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(texture->target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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renderer->procs.glEGLImageTargetTexture2DOES(texture->target, buffer->image);
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glBindTexture(texture->target, 0);
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}
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pop_gles2_debug(texture->renderer);
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wlr_egl_restore_context(&prev_ctx);
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texture->tex = buffer->tex;
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wlr_buffer_lock(texture->buffer->buffer);
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return &texture->wlr_texture;
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}
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struct wlr_texture *gles2_texture_from_buffer(struct wlr_renderer *wlr_renderer,
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struct wlr_buffer *buffer) {
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struct wlr_gles2_renderer *renderer = gles2_get_renderer(wlr_renderer);
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void *data;
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uint32_t format;
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size_t stride;
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struct wlr_dmabuf_attributes dmabuf;
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if (wlr_buffer_get_dmabuf(buffer, &dmabuf)) {
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return gles2_texture_from_dmabuf(renderer, buffer, &dmabuf);
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} else if (wlr_buffer_begin_data_ptr_access(buffer,
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WLR_BUFFER_DATA_PTR_ACCESS_READ, &data, &format, &stride)) {
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struct wlr_texture *tex = gles2_texture_from_pixels(wlr_renderer,
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format, stride, buffer->width, buffer->height, data);
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wlr_buffer_end_data_ptr_access(buffer);
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return tex;
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} else {
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return NULL;
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}
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}
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void wlr_gles2_texture_get_attribs(struct wlr_texture *wlr_texture,
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struct wlr_gles2_texture_attribs *attribs) {
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struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
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*attribs = (struct wlr_gles2_texture_attribs){
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.target = texture->target,
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.tex = texture->tex,
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.has_alpha = texture->has_alpha,
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};
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}
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