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https://github.com/hyprwm/wlroots-hyprland.git
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62d646f2b8
We were assuming GL_BGRA_EXT was always supported. We now check that it's supported for rendering. We fail if it isn't because this format is specified as "always supported" by the Wayland protocol. We also check if it's supported for reading pixels. A new preferred_read_format function returns the preferred format that can be used to read pixels. This is used by the screencopy protocol.
78 lines
1.8 KiB
C
78 lines
1.8 KiB
C
#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#include "render/gles2.h"
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/*
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* The wayland formats are little endian while the GL formats are big endian,
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* so WL_SHM_FORMAT_ARGB8888 is actually compatible with GL_BGRA_EXT.
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*/
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static const struct wlr_gles2_pixel_format formats[] = {
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{
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.wl_format = WL_SHM_FORMAT_ARGB8888,
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.depth = 32,
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.bpp = 32,
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.gl_format = GL_BGRA_EXT,
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.gl_type = GL_UNSIGNED_BYTE,
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.has_alpha = true,
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},
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{
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.wl_format = WL_SHM_FORMAT_XRGB8888,
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.depth = 24,
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.bpp = 32,
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.gl_format = GL_BGRA_EXT,
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.gl_type = GL_UNSIGNED_BYTE,
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.has_alpha = false,
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},
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{
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.wl_format = WL_SHM_FORMAT_XBGR8888,
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.depth = 24,
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.bpp = 32,
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.gl_format = GL_RGBA,
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.gl_type = GL_UNSIGNED_BYTE,
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.has_alpha = false,
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},
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{
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.wl_format = WL_SHM_FORMAT_ABGR8888,
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.depth = 32,
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.bpp = 32,
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.gl_format = GL_RGBA,
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.gl_type = GL_UNSIGNED_BYTE,
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.has_alpha = true,
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},
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};
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static const enum wl_shm_format wl_formats[] = {
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WL_SHM_FORMAT_ARGB8888,
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WL_SHM_FORMAT_XRGB8888,
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WL_SHM_FORMAT_ABGR8888,
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WL_SHM_FORMAT_XBGR8888,
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};
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// TODO: more pixel formats
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const struct wlr_gles2_pixel_format *get_gles2_format_from_wl(
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enum wl_shm_format fmt) {
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for (size_t i = 0; i < sizeof(formats) / sizeof(*formats); ++i) {
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if (formats[i].wl_format == fmt) {
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return &formats[i];
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}
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}
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return NULL;
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}
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const struct wlr_gles2_pixel_format *get_gles2_format_from_gl(
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GLint gl_format, GLint gl_type, bool alpha) {
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for (size_t i = 0; i < sizeof(formats) / sizeof(*formats); ++i) {
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if (formats[i].gl_format == gl_format &&
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formats[i].gl_type == gl_type &&
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formats[i].has_alpha == alpha) {
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return &formats[i];
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}
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}
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return NULL;
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}
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const enum wl_shm_format *get_gles2_wl_formats(size_t *len) {
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*len = sizeof(wl_formats) / sizeof(wl_formats[0]);
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return wl_formats;
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}
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