You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
368 lines
10 KiB
368 lines
10 KiB
#include <assert.h>
|
|
#include <drm_fourcc.h>
|
|
#include <stdlib.h>
|
|
#include <wlr/interfaces/wlr_output.h>
|
|
#include <wlr/render/interface.h>
|
|
#include <wlr/util/log.h>
|
|
#include <xf86drm.h>
|
|
#include "backend/backend.h"
|
|
#include "render/allocator/allocator.h"
|
|
#include "render/drm_format_set.h"
|
|
#include "render/swapchain.h"
|
|
#include "render/wlr_renderer.h"
|
|
#include "render/pixel_format.h"
|
|
#include "types/wlr_output.h"
|
|
|
|
bool wlr_output_init_render(struct wlr_output *output,
|
|
struct wlr_allocator *allocator, struct wlr_renderer *renderer) {
|
|
assert(allocator != NULL && renderer != NULL);
|
|
assert(output->back_buffer == NULL);
|
|
|
|
uint32_t backend_caps = backend_get_buffer_caps(output->backend);
|
|
uint32_t renderer_caps = renderer_get_render_buffer_caps(renderer);
|
|
|
|
if (!(backend_caps & allocator->buffer_caps)) {
|
|
wlr_log(WLR_ERROR, "output backend and allocator buffer capabilities "
|
|
"don't match");
|
|
return false;
|
|
} else if (!(renderer_caps & allocator->buffer_caps)) {
|
|
wlr_log(WLR_ERROR, "renderer and allocator buffer capabilities "
|
|
"don't match");
|
|
return false;
|
|
}
|
|
|
|
wlr_swapchain_destroy(output->swapchain);
|
|
output->swapchain = NULL;
|
|
|
|
wlr_swapchain_destroy(output->cursor_swapchain);
|
|
output->cursor_swapchain = NULL;
|
|
|
|
output->allocator = allocator;
|
|
output->renderer = renderer;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Ensure the output has a suitable swapchain. The swapchain is re-created if
|
|
* necessary.
|
|
*
|
|
* If allow_modifiers is set to true, the swapchain's format may use modifiers.
|
|
* If set to false, the swapchain's format is guaranteed to not use modifiers.
|
|
*/
|
|
static bool output_create_swapchain(struct wlr_output *output,
|
|
const struct wlr_output_state *state, bool allow_modifiers) {
|
|
int width, height;
|
|
output_pending_resolution(output, state, &width, &height);
|
|
|
|
struct wlr_allocator *allocator = output->allocator;
|
|
assert(allocator != NULL);
|
|
|
|
const struct wlr_drm_format_set *display_formats =
|
|
wlr_output_get_primary_formats(output, allocator->buffer_caps);
|
|
struct wlr_drm_format *format = output_pick_format(output, display_formats,
|
|
output->render_format);
|
|
if (format == NULL) {
|
|
wlr_log(WLR_ERROR, "Failed to pick primary buffer format for output '%s'",
|
|
output->name);
|
|
return false;
|
|
}
|
|
|
|
if (output->swapchain != NULL && output->swapchain->width == width &&
|
|
output->swapchain->height == height &&
|
|
output->swapchain->format->format == format->format &&
|
|
(allow_modifiers || output->swapchain->format->len == 0)) {
|
|
// no change, keep existing swapchain
|
|
free(format);
|
|
return true;
|
|
}
|
|
|
|
char *format_name = drmGetFormatName(format->format);
|
|
wlr_log(WLR_DEBUG, "Choosing primary buffer format %s (0x%08"PRIX32") for output '%s'",
|
|
format_name ? format_name : "<unknown>", format->format, output->name);
|
|
free(format_name);
|
|
|
|
if (!allow_modifiers && (format->len != 1 || format->modifiers[0] != DRM_FORMAT_MOD_LINEAR)) {
|
|
if (!wlr_drm_format_has(format, DRM_FORMAT_MOD_INVALID)) {
|
|
wlr_log(WLR_DEBUG, "Implicit modifiers not supported");
|
|
free(format);
|
|
return false;
|
|
}
|
|
|
|
format->len = 0;
|
|
wlr_drm_format_add(&format, DRM_FORMAT_MOD_INVALID);
|
|
}
|
|
|
|
struct wlr_swapchain *swapchain =
|
|
wlr_swapchain_create(allocator, width, height, format);
|
|
free(format);
|
|
if (swapchain == NULL) {
|
|
wlr_log(WLR_ERROR, "Failed to create output swapchain");
|
|
return false;
|
|
}
|
|
|
|
wlr_swapchain_destroy(output->swapchain);
|
|
output->swapchain = swapchain;
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool output_attach_back_buffer(struct wlr_output *output,
|
|
const struct wlr_output_state *state, int *buffer_age) {
|
|
assert(output->back_buffer == NULL);
|
|
|
|
if (!output_create_swapchain(output, state, true)) {
|
|
return false;
|
|
}
|
|
|
|
struct wlr_renderer *renderer = output->renderer;
|
|
assert(renderer != NULL);
|
|
|
|
struct wlr_buffer *buffer =
|
|
wlr_swapchain_acquire(output->swapchain, buffer_age);
|
|
if (buffer == NULL) {
|
|
return false;
|
|
}
|
|
|
|
if (!renderer_bind_buffer(renderer, buffer)) {
|
|
wlr_buffer_unlock(buffer);
|
|
return false;
|
|
}
|
|
|
|
output->back_buffer = buffer;
|
|
return true;
|
|
}
|
|
|
|
void output_clear_back_buffer(struct wlr_output *output) {
|
|
if (output->back_buffer == NULL) {
|
|
return;
|
|
}
|
|
|
|
struct wlr_renderer *renderer = output->renderer;
|
|
assert(renderer != NULL);
|
|
|
|
renderer_bind_buffer(renderer, NULL);
|
|
|
|
wlr_buffer_unlock(output->back_buffer);
|
|
output->back_buffer = NULL;
|
|
}
|
|
|
|
bool wlr_output_attach_render(struct wlr_output *output, int *buffer_age) {
|
|
return output_attach_back_buffer(output, &output->pending, buffer_age);
|
|
}
|
|
|
|
static bool output_attach_empty_back_buffer(struct wlr_output *output,
|
|
const struct wlr_output_state *state) {
|
|
assert(!(state->committed & WLR_OUTPUT_STATE_BUFFER));
|
|
|
|
if (!output_attach_back_buffer(output, state, NULL)) {
|
|
return false;
|
|
}
|
|
|
|
int width, height;
|
|
output_pending_resolution(output, state, &width, &height);
|
|
|
|
struct wlr_renderer *renderer = output->renderer;
|
|
if (!wlr_renderer_begin(renderer, width, height)) {
|
|
return false;
|
|
}
|
|
wlr_renderer_clear(renderer, (float[]){0, 0, 0, 0});
|
|
wlr_renderer_end(renderer);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool output_test_with_back_buffer(struct wlr_output *output,
|
|
const struct wlr_output_state *state) {
|
|
if (output->impl->test == NULL) {
|
|
return true;
|
|
}
|
|
|
|
// Create a shallow copy of the state with the empty back buffer included
|
|
// to pass to the backend.
|
|
struct wlr_output_state copy = *state;
|
|
assert((copy.committed & WLR_OUTPUT_STATE_BUFFER) == 0);
|
|
copy.committed |= WLR_OUTPUT_STATE_BUFFER;
|
|
assert(output->back_buffer != NULL);
|
|
copy.buffer = output->back_buffer;
|
|
|
|
return output->impl->test(output, ©);
|
|
}
|
|
|
|
// This function may attach a new, empty back buffer if necessary.
|
|
// If so, the new_back_buffer out parameter will be set to true.
|
|
bool output_ensure_buffer(struct wlr_output *output,
|
|
const struct wlr_output_state *state,
|
|
bool *new_back_buffer) {
|
|
assert(*new_back_buffer == false);
|
|
|
|
// If we already have a buffer, we don't need to allocate a new one
|
|
if (state->committed & WLR_OUTPUT_STATE_BUFFER) {
|
|
return true;
|
|
}
|
|
|
|
// If the compositor hasn't called wlr_output_init_render(), they will use
|
|
// their own logic to attach buffers
|
|
if (output->renderer == NULL) {
|
|
return true;
|
|
}
|
|
|
|
// If we're lighting up an output or changing its mode, make sure to
|
|
// provide a new buffer
|
|
bool needs_new_buffer = false;
|
|
if ((state->committed & WLR_OUTPUT_STATE_ENABLED) && state->enabled) {
|
|
needs_new_buffer = true;
|
|
}
|
|
if (state->committed & WLR_OUTPUT_STATE_MODE) {
|
|
needs_new_buffer = true;
|
|
}
|
|
if (state->committed & WLR_OUTPUT_STATE_RENDER_FORMAT) {
|
|
needs_new_buffer = true;
|
|
}
|
|
if (state->allow_artifacts && output->commit_seq == 0) {
|
|
// On first commit, require a new buffer if the compositor called a
|
|
// mode-setting function, even if the mode won't change. This makes it
|
|
// so the swapchain is created now.
|
|
needs_new_buffer = true;
|
|
}
|
|
if (!needs_new_buffer) {
|
|
return true;
|
|
}
|
|
|
|
wlr_log(WLR_DEBUG, "Attaching empty buffer to output for modeset");
|
|
|
|
if (!output_attach_empty_back_buffer(output, state)) {
|
|
return false;
|
|
}
|
|
|
|
if (output_test_with_back_buffer(output, state)) {
|
|
*new_back_buffer = true;
|
|
return true;
|
|
}
|
|
|
|
output_clear_back_buffer(output);
|
|
|
|
if (output->swapchain->format->len == 0) {
|
|
return false;
|
|
}
|
|
|
|
// The test failed for a buffer which has modifiers, try disabling
|
|
// modifiers to see if that makes a difference.
|
|
wlr_log(WLR_DEBUG, "Output modeset test failed, retrying without modifiers");
|
|
|
|
if (!output_create_swapchain(output, state, false)) {
|
|
return false;
|
|
}
|
|
|
|
if (!output_attach_empty_back_buffer(output, state)) {
|
|
goto error_destroy_swapchain;
|
|
}
|
|
|
|
if (output_test_with_back_buffer(output, state)) {
|
|
*new_back_buffer = true;
|
|
return true;
|
|
}
|
|
|
|
output_clear_back_buffer(output);
|
|
|
|
error_destroy_swapchain:
|
|
// Destroy the modifierless swapchain so that the output does not get stuck
|
|
// without modifiers. A new swapchain with modifiers will be created when
|
|
// needed by output_attach_back_buffer().
|
|
wlr_swapchain_destroy(output->swapchain);
|
|
output->swapchain = NULL;
|
|
|
|
return false;
|
|
}
|
|
|
|
void wlr_output_lock_attach_render(struct wlr_output *output, bool lock) {
|
|
if (lock) {
|
|
++output->attach_render_locks;
|
|
} else {
|
|
assert(output->attach_render_locks > 0);
|
|
--output->attach_render_locks;
|
|
}
|
|
wlr_log(WLR_DEBUG, "%s direct scan-out on output '%s' (locks: %d)",
|
|
lock ? "Disabling" : "Enabling", output->name,
|
|
output->attach_render_locks);
|
|
}
|
|
|
|
struct wlr_drm_format *output_pick_format(struct wlr_output *output,
|
|
const struct wlr_drm_format_set *display_formats,
|
|
uint32_t fmt) {
|
|
struct wlr_renderer *renderer = output->renderer;
|
|
struct wlr_allocator *allocator = output->allocator;
|
|
assert(renderer != NULL && allocator != NULL);
|
|
|
|
const struct wlr_drm_format_set *render_formats =
|
|
wlr_renderer_get_render_formats(renderer);
|
|
if (render_formats == NULL) {
|
|
wlr_log(WLR_ERROR, "Failed to get render formats");
|
|
return NULL;
|
|
}
|
|
|
|
const struct wlr_drm_format *render_format =
|
|
wlr_drm_format_set_get(render_formats, fmt);
|
|
if (render_format == NULL) {
|
|
wlr_log(WLR_DEBUG, "Renderer doesn't support format 0x%"PRIX32, fmt);
|
|
return NULL;
|
|
}
|
|
|
|
struct wlr_drm_format *format = NULL;
|
|
if (display_formats != NULL) {
|
|
const struct wlr_drm_format *display_format =
|
|
wlr_drm_format_set_get(display_formats, fmt);
|
|
if (display_format == NULL) {
|
|
wlr_log(WLR_DEBUG, "Output doesn't support format 0x%"PRIX32, fmt);
|
|
return NULL;
|
|
}
|
|
format = wlr_drm_format_intersect(display_format, render_format);
|
|
} else {
|
|
// The output can display any format
|
|
format = wlr_drm_format_dup(render_format);
|
|
}
|
|
|
|
if (format == NULL) {
|
|
wlr_log(WLR_DEBUG, "Failed to intersect display and render "
|
|
"modifiers for format 0x%"PRIX32 " on output %s",
|
|
fmt, output->name);
|
|
return NULL;
|
|
}
|
|
|
|
return format;
|
|
}
|
|
|
|
uint32_t wlr_output_preferred_read_format(struct wlr_output *output) {
|
|
struct wlr_renderer *renderer = output->renderer;
|
|
assert(renderer != NULL);
|
|
|
|
if (!renderer->impl->preferred_read_format || !renderer->impl->read_pixels) {
|
|
return DRM_FORMAT_INVALID;
|
|
}
|
|
|
|
if (!output_attach_back_buffer(output, &output->pending, NULL)) {
|
|
return false;
|
|
}
|
|
|
|
uint32_t fmt = renderer->impl->preferred_read_format(renderer);
|
|
|
|
output_clear_back_buffer(output);
|
|
|
|
return fmt;
|
|
}
|
|
|
|
bool output_is_direct_scanout(struct wlr_output *output,
|
|
struct wlr_buffer *buffer) {
|
|
if (output->swapchain == NULL) {
|
|
return true;
|
|
}
|
|
|
|
for (size_t i = 0; i < WLR_SWAPCHAIN_CAP; i++) {
|
|
if (output->swapchain->slots[i].buffer == buffer) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|