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render/pixman: implement render pass API

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This commit is contained in:
Simon Ser 2022-12-07 14:30:23 +01:00
parent 6ce371a317
commit 6830bfc17f
4 changed files with 212 additions and 1 deletions
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11
include/render/pixman.h
View file

@ -1,9 +1,10 @@
#ifndef RENDER_PIXMAN_H
#define RENDER_PIXMAN_H
#include <wlr/render/drm_format_set.h>
#include <wlr/render/interface.h>
#include <wlr/render/pixman.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/render/drm_format_set.h>
#include "render/pixel_format.h"
struct wlr_pixman_pixel_format {
@ -48,6 +49,11 @@ struct wlr_pixman_texture {
struct wlr_buffer *buffer; // if created via texture_from_buffer
};
struct wlr_pixman_render_pass {
struct wlr_render_pass base;
struct wlr_pixman_buffer *buffer;
};
pixman_format_code_t get_pixman_format_from_drm(uint32_t fmt);
uint32_t get_drm_format_from_pixman(pixman_format_code_t fmt);
const uint32_t *get_pixman_drm_formats(size_t *len);
@ -55,4 +61,7 @@ const uint32_t *get_pixman_drm_formats(size_t *len);
bool begin_pixman_data_ptr_access(struct wlr_buffer *buffer, pixman_image_t **image_ptr,
uint32_t flags);
struct wlr_pixman_render_pass *begin_pixman_render_pass(
struct wlr_pixman_buffer *buffer);
#endif

1
render/pixman/meson.build
View file

@ -3,6 +3,7 @@ pixman = dependency('pixman-1')
wlr_deps += pixman
wlr_files += files(
'pass.c',
'pixel_format.c',
'renderer.c',
)

181
render/pixman/pass.c Normal file
View file

@ -0,0 +1,181 @@
#include <assert.h>
#include <stdlib.h>
#include "render/pixman.h"
static const struct wlr_render_pass_impl render_pass_impl;
static struct wlr_pixman_render_pass *get_render_pass(struct wlr_render_pass *wlr_pass) {
assert(wlr_pass->impl == &render_pass_impl);
struct wlr_pixman_render_pass *pass = wl_container_of(wlr_pass, pass, base);
return pass;
}
static struct wlr_pixman_texture *get_texture(struct wlr_texture *wlr_texture) {
assert(wlr_texture_is_pixman(wlr_texture));
struct wlr_pixman_texture *texture = wl_container_of(wlr_texture, texture, wlr_texture);
return texture;
}
static bool render_pass_submit(struct wlr_render_pass *wlr_pass) {
struct wlr_pixman_render_pass *pass = get_render_pass(wlr_pass);
wlr_buffer_end_data_ptr_access(pass->buffer->buffer);
wlr_buffer_unlock(pass->buffer->buffer);
free(pass);
return true;
}
static void render_pass_add_texture(struct wlr_render_pass *wlr_pass,
const struct wlr_render_texture_options *options) {
struct wlr_pixman_render_pass *pass = get_render_pass(wlr_pass);
struct wlr_pixman_texture *texture = get_texture(options->texture);
struct wlr_pixman_buffer *buffer = pass->buffer;
struct wlr_box dst_box = options->dst_box;
if (texture->buffer != NULL && !begin_pixman_data_ptr_access(texture->buffer,
&texture->image, WLR_BUFFER_DATA_PTR_ACCESS_READ)) {
return;
}
struct wlr_fbox src_fbox;
wlr_render_texture_options_get_src_box(options, &src_fbox);
struct wlr_box src_box = {
.x = roundf(src_fbox.x),
.y = roundf(src_fbox.y),
.width = roundf(src_fbox.width),
.height = roundf(src_fbox.height),
};
pixman_image_t *mask = NULL;
float alpha = wlr_render_texture_options_get_alpha(options);
if (alpha != 1) {
mask = pixman_image_create_solid_fill(&(struct pixman_color){
.alpha = 0xFFFF * alpha,
});
}
int32_t dest_x, dest_y, width, height;
if (options->transform != WL_OUTPUT_TRANSFORM_NORMAL) {
// Cosinus/sinus values are extact integers for enum wl_output_transform entries
int tr_cos = 1, tr_sin = 0, tr_x = 0, tr_y = 0;
switch (options->transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
case WL_OUTPUT_TRANSFORM_FLIPPED:
break;
case WL_OUTPUT_TRANSFORM_90:
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
tr_cos = 0;
tr_sin = 1;
tr_x = buffer->buffer->height;
break;
case WL_OUTPUT_TRANSFORM_180:
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
tr_cos = -1;
tr_sin = 0;
tr_x = buffer->buffer->width;
tr_y = buffer->buffer->height;
break;
case WL_OUTPUT_TRANSFORM_270:
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
tr_cos = 0;
tr_sin = -1;
tr_y = buffer->buffer->width;
break;
}
struct wlr_box orig_box;
wlr_box_transform(&orig_box, &dst_box, options->transform,
buffer->buffer->width, buffer->buffer->height);
struct pixman_transform transform;
pixman_transform_init_identity(&transform);
pixman_transform_rotate(&transform, NULL,
pixman_int_to_fixed(tr_cos), pixman_int_to_fixed(tr_sin));
if (options->transform >= WL_OUTPUT_TRANSFORM_FLIPPED) {
pixman_transform_scale(&transform, NULL,
pixman_int_to_fixed(-1), pixman_int_to_fixed(1));
}
pixman_transform_translate(&transform, NULL,
pixman_int_to_fixed(tr_x), pixman_int_to_fixed(tr_y));
pixman_transform_translate(&transform, NULL,
-pixman_int_to_fixed(orig_box.x), -pixman_int_to_fixed(orig_box.y));
pixman_image_set_transform(texture->image, &transform);
dest_x = dest_y = 0;
width = buffer->buffer->width;
height = buffer->buffer->height;
} else {
pixman_image_set_transform(texture->image, NULL);
dest_x = dst_box.x;
dest_y = dst_box.y;
width = src_box.width;
height = src_box.height;
}
pixman_image_set_clip_region32(buffer->image, (pixman_region32_t *)options->clip);
pixman_image_composite32(PIXMAN_OP_OVER, texture->image, mask,
buffer->image, src_box.x, src_box.y, 0, 0, dest_x, dest_y,
width, height);
pixman_image_set_clip_region32(buffer->image, NULL);
pixman_image_set_transform(texture->image, NULL);
if (texture->buffer != NULL) {
wlr_buffer_end_data_ptr_access(texture->buffer);
}
if (mask != NULL) {
pixman_image_unref(mask);
}
}
static void render_pass_add_rect(struct wlr_render_pass *wlr_pass,
const struct wlr_render_rect_options *options) {
struct wlr_pixman_render_pass *pass = get_render_pass(wlr_pass);
struct wlr_pixman_buffer *buffer = pass->buffer;
struct wlr_box box = options->box;
struct pixman_color color = {
.red = options->color.r * 0xFFFF,
.green = options->color.g * 0xFFFF,
.blue = options->color.b * 0xFFFF,
.alpha = options->color.a * 0xFFFF,
};
pixman_image_t *fill = pixman_image_create_solid_fill(&color);
pixman_image_set_clip_region32(buffer->image, (pixman_region32_t *)options->clip);
pixman_image_composite32(PIXMAN_OP_OVER, fill, NULL, buffer->image,
0, 0, 0, 0, box.x, box.y, box.width, box.height);
pixman_image_set_clip_region32(buffer->image, NULL);
pixman_image_unref(fill);
}
static const struct wlr_render_pass_impl render_pass_impl = {
.submit = render_pass_submit,
.add_texture = render_pass_add_texture,
.add_rect = render_pass_add_rect,
};
struct wlr_pixman_render_pass *begin_pixman_render_pass(
struct wlr_pixman_buffer *buffer) {
struct wlr_pixman_render_pass *pass = calloc(1, sizeof(*pass));
if (pass == NULL) {
return NULL;
}
wlr_render_pass_init(&pass->base, &render_pass_impl);
if (!begin_pixman_data_ptr_access(buffer->buffer, &buffer->image,
WLR_BUFFER_DATA_PTR_ACCESS_READ | WLR_BUFFER_DATA_PTR_ACCESS_WRITE)) {
free(pass);
return NULL;
}
wlr_buffer_lock(buffer->buffer);
pass->buffer = buffer;
return pass;
}

20
render/pixman/renderer.c
View file

@ -493,6 +493,25 @@ static uint32_t pixman_get_render_buffer_caps(struct wlr_renderer *renderer) {
return WLR_BUFFER_CAP_DATA_PTR;
}
static struct wlr_render_pass *pixman_begin_buffer_pass(struct wlr_renderer *wlr_renderer,
struct wlr_buffer *wlr_buffer) {
struct wlr_pixman_renderer *renderer = get_renderer(wlr_renderer);
struct wlr_pixman_buffer *buffer = get_buffer(renderer, wlr_buffer);
if (buffer == NULL) {
buffer = create_buffer(renderer, wlr_buffer);
}
if (buffer == NULL) {
return NULL;
}
struct wlr_pixman_render_pass *pass = begin_pixman_render_pass(buffer);
if (pass == NULL) {
return NULL;
}
return &pass->base;
}
static const struct wlr_renderer_impl renderer_impl = {
.begin = pixman_begin,
.end = pixman_end,
@ -508,6 +527,7 @@ static const struct wlr_renderer_impl renderer_impl = {
.preferred_read_format = pixman_preferred_read_format,
.read_pixels = pixman_read_pixels,
.get_render_buffer_caps = pixman_get_render_buffer_caps,
.begin_buffer_pass = pixman_begin_buffer_pass,
};
struct wlr_renderer *wlr_pixman_renderer_create(void) {