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render: add wlr_renderer_clear and wlr_renderer_scissor

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This commit is contained in:
emersion 2018-01-22 16:42:22 +01:00
parent 3f1c4f5be7
commit 415a2b7c56
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GPG Key ID: 0FDE7BE0E88F5E48
10 changed files with 67 additions and 23 deletions
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1
examples/output-layout.c
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@ -102,6 +102,7 @@ static void handle_output_frame(struct output_state *output,
wlr_output_make_current(wlr_output, NULL);
wlr_renderer_begin(sample->renderer, wlr_output);
wlr_renderer_clear(sample->renderer, 0.25f, 0.25f, 0.25f, 1);
animate_cat(sample, output->output);

1
examples/rotation.c
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@ -44,6 +44,7 @@ static void handle_output_frame(struct output_state *output, struct timespec *ts
wlr_output_make_current(wlr_output, NULL);
wlr_renderer_begin(sample->renderer, wlr_output);
wlr_renderer_clear(sample->renderer, 0.25f, 0.25f, 0.25f, 1);
float matrix[16];
for (int y = -128 + (int)odata->y_offs; y < height; y += 128) {

1
examples/tablet.c
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@ -44,6 +44,7 @@ static void handle_output_frame(struct output_state *output, struct timespec *ts
wlr_output_make_current(wlr_output, NULL);
wlr_renderer_begin(sample->renderer, wlr_output);
wlr_renderer_clear(sample->renderer, 0.25f, 0.25f, 0.25f, 1);
float matrix[16], view[16];
float distance = 0.8f * (1 - sample->distance);

1
examples/touch.c
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@ -43,6 +43,7 @@ static void handle_output_frame(struct output_state *output, struct timespec *ts
wlr_output_make_current(wlr_output, NULL);
wlr_renderer_begin(sample->renderer, wlr_output);
wlr_renderer_clear(sample->renderer, 0.25f, 0.25f, 0.25f, 1);
float matrix[16];
struct touch_point *p;

4
include/wlr/render.h
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@ -5,6 +5,7 @@
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <wayland-server-protocol.h>
#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_output.h>
struct wlr_texture;
@ -12,6 +13,9 @@ struct wlr_renderer;
void wlr_renderer_begin(struct wlr_renderer *r, struct wlr_output *output);
void wlr_renderer_end(struct wlr_renderer *r);
void wlr_renderer_clear(struct wlr_renderer *r, float red, float green,
float blue, float alpha);
void wlr_renderer_scissor(struct wlr_renderer *r, struct wlr_box *box);
/**
* Requests a texture handle from this renderer.
*/

3
include/wlr/render/egl.h
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@ -72,7 +72,4 @@ const char *egl_error(void);
bool wlr_egl_make_current(struct wlr_egl *egl, EGLSurface surface,
int *buffer_age);
// TODO: remove
int wlr_egl_get_buffer_age(struct wlr_egl *egl, EGLSurface surface);
#endif

4
include/wlr/render/interface.h
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@ -6,6 +6,7 @@
#include <EGL/eglext.h>
#include <stdbool.h>
#include <wlr/render.h>
#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_output.h>
struct wlr_renderer_impl;
@ -17,6 +18,9 @@ struct wlr_renderer {
struct wlr_renderer_impl {
void (*begin)(struct wlr_renderer *renderer, struct wlr_output *output);
void (*end)(struct wlr_renderer *renderer);
void (*clear)(struct wlr_renderer *renderer, float red, float green,
float blue, float alpha);
void (*scissor)(struct wlr_renderer *renderer, struct wlr_box *box);
struct wlr_texture *(*texture_create)(struct wlr_renderer *renderer);
bool (*render_with_matrix)(struct wlr_renderer *renderer,
struct wlr_texture *texture, const float (*matrix)[16]);

40
render/gles2/renderer.c
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@ -105,7 +105,7 @@ static void init_globals() {
init_default_shaders();
}
static void wlr_gles2_begin(struct wlr_renderer *_renderer,
static void wlr_gles2_begin(struct wlr_renderer *wlr_renderer,
struct wlr_output *output) {
GL_CALL(glViewport(0, 0, output->width, output->height));
@ -117,14 +117,30 @@ static void wlr_gles2_begin(struct wlr_renderer *_renderer,
// for users to sling matricies themselves
}
static void wlr_gles2_end(struct wlr_renderer *renderer) {
static void wlr_gles2_end(struct wlr_renderer *wlr_renderer) {
// no-op
}
static void wlr_gles2_clear(struct wlr_renderer *wlr_renderer, float red,
float green, float blue, float alpha) {
glClearColor(red, green, blue, alpha);
glClear(GL_COLOR_BUFFER_BIT);
}
static void wlr_gles2_scissor(struct wlr_renderer *wlr_renderer,
struct wlr_box *box) {
if (box != NULL) {
glScissor(box->x, box->y, box->width, box->height);
glEnable(GL_SCISSOR_TEST);
} else {
glDisable(GL_SCISSOR_TEST);
}
}
static struct wlr_texture *wlr_gles2_texture_create(
struct wlr_renderer *_renderer) {
struct wlr_renderer *wlr_renderer) {
struct wlr_gles2_renderer *renderer =
(struct wlr_gles2_renderer *)_renderer;
(struct wlr_gles2_renderer *)wlr_renderer;
return gles2_texture_create(renderer->egl);
}
@ -154,7 +170,7 @@ static void draw_quad() {
GL_CALL(glDisableVertexAttribArray(1));
}
static bool wlr_gles2_render_texture(struct wlr_renderer *_renderer,
static bool wlr_gles2_render_texture(struct wlr_renderer *wlr_renderer,
struct wlr_texture *texture, const float (*matrix)[16]) {
if (!texture || !texture->valid) {
wlr_log(L_ERROR, "attempt to render invalid texture");
@ -169,7 +185,7 @@ static bool wlr_gles2_render_texture(struct wlr_renderer *_renderer,
return true;
}
static void wlr_gles2_render_quad(struct wlr_renderer *renderer,
static void wlr_gles2_render_quad(struct wlr_renderer *wlr_renderer,
const float (*color)[4], const float (*matrix)[16]) {
GL_CALL(glUseProgram(shaders.quad));
GL_CALL(glUniformMatrix4fv(0, 1, GL_TRUE, *matrix));
@ -177,7 +193,7 @@ static void wlr_gles2_render_quad(struct wlr_renderer *renderer,
draw_quad();
}
static void wlr_gles2_render_ellipse(struct wlr_renderer *renderer,
static void wlr_gles2_render_ellipse(struct wlr_renderer *wlr_renderer,
const float (*color)[4], const float (*matrix)[16]) {
GL_CALL(glUseProgram(shaders.ellipse));
GL_CALL(glUniformMatrix4fv(0, 1, GL_TRUE, *matrix));
@ -197,10 +213,10 @@ static const enum wl_shm_format *wlr_gles2_formats(
return formats;
}
static bool wlr_gles2_buffer_is_drm(struct wlr_renderer *_renderer,
static bool wlr_gles2_buffer_is_drm(struct wlr_renderer *wlr_renderer,
struct wl_resource *buffer) {
struct wlr_gles2_renderer *renderer =
(struct wlr_gles2_renderer *)_renderer;
(struct wlr_gles2_renderer *)wlr_renderer;
EGLint format;
return wlr_egl_query_buffer(renderer->egl, buffer,
EGL_TEXTURE_FORMAT, &format);
@ -216,8 +232,8 @@ static void rgba_to_argb(uint32_t *data, size_t height, size_t stride) {
}
}
static void wlr_gles2_read_pixels(struct wlr_renderer *renderer, int x, int y,
int width, int height, void *out_data) {
static void wlr_gles2_read_pixels(struct wlr_renderer *wlr_renderer,
int x, int y, int width, int height, void *out_data) {
glReadPixels(x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, out_data);
rgba_to_argb(out_data, height, width*4);
}
@ -225,6 +241,8 @@ static void wlr_gles2_read_pixels(struct wlr_renderer *renderer, int x, int y,
static struct wlr_renderer_impl wlr_renderer_impl = {
.begin = wlr_gles2_begin,
.end = wlr_gles2_end,
.clear = wlr_gles2_clear,
.scissor = wlr_gles2_scissor,
.texture_create = wlr_gles2_texture_create,
.render_with_matrix = wlr_gles2_render_texture,
.render_quad = wlr_gles2_render_quad,

9
render/wlr_renderer.c
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@ -23,6 +23,15 @@ void wlr_renderer_end(struct wlr_renderer *r) {
r->impl->end(r);
}
void wlr_renderer_clear(struct wlr_renderer *r, float red, float green,
float blue, float alpha) {
r->impl->clear(r, red, green, blue, alpha);
}
void wlr_renderer_scissor(struct wlr_renderer *r, struct wlr_box *box) {
r->impl->scissor(r, box);
}
struct wlr_texture *wlr_render_texture_create(struct wlr_renderer *r) {
return r->impl->texture_create(r);
}

26
rootston/output.c
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@ -2,7 +2,6 @@
#include <time.h>
#include <stdlib.h>
#include <stdbool.h>
#include <GLES2/gl2.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_compositor.h>
#include <wlr/types/wlr_wl_shell.h>
@ -247,8 +246,13 @@ static void render_surface(struct wlr_surface *surface, double lx, double ly,
pixman_box32_t *rects =
pixman_region32_rectangles(&surface_damage, &nrects);
for (int i = 0; i < nrects; ++i) {
glScissor(rects[i].x1, output->wlr_output->height - rects[i].y2,
rects[i].x2 - rects[i].x1, rects[i].y2 - rects[i].y1);
struct wlr_box scissor = {
.x = rects[i].x1,
.y = output->wlr_output->height - rects[i].y2,
.width = rects[i].x2 - rects[i].x1,
.height = rects[i].y2 - rects[i].y1,
};
wlr_renderer_scissor(output->desktop->server->renderer, &scissor);
wlr_render_with_matrix(output->desktop->server->renderer,
surface->texture, &matrix);
}
@ -353,7 +357,6 @@ static void render_output(struct roots_output *output) {
};
wlr_renderer_begin(server->renderer, wlr_output);
glEnable(GL_SCISSOR_TEST);
if (!pixman_region32_not_empty(&damage)) {
// Output isn't damaged but needs buffer swap
@ -363,10 +366,15 @@ static void render_output(struct roots_output *output) {
int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(&damage, &nrects);
for (int i = 0; i < nrects; ++i) {
glScissor(rects[i].x1, wlr_output->height - rects[i].y2,
rects[i].x2 - rects[i].x1, rects[i].y2 - rects[i].y1);
glClearColor(clear_color[0], clear_color[1], clear_color[2], 1);
glClear(GL_COLOR_BUFFER_BIT);
struct wlr_box scissor = {
.x = rects[i].x1,
.y = wlr_output->height - rects[i].y2,
.width = rects[i].x2 - rects[i].x1,
.height = rects[i].y2 - rects[i].y1,
};
wlr_renderer_scissor(output->desktop->server->renderer, &scissor);
wlr_renderer_clear(output->desktop->server->renderer,
clear_color[0], clear_color[1], clear_color[2], 1);
}
// If a view is fullscreen on this output, render it
@ -425,7 +433,7 @@ static void render_output(struct roots_output *output) {
}
renderer_end:
glDisable(GL_SCISSOR_TEST);
wlr_renderer_scissor(output->desktop->server->renderer, NULL);
wlr_renderer_end(server->renderer);
wlr_output_swap_buffers(wlr_output, &now, &damage);
output->frame_pending = true;