[PATCH 1/2] gl-renderer: Track border damage and only repaint borders on an as-needed basis
Jason Ekstrand
jason at jlekstrand.net
Sat Jan 11 10:34:35 PST 2014
Signed-off-by: Jason Ekstrand <jason at jlekstrand.net>
---
src/gl-renderer.c | 110 ++++++++++++++++++++++++++++++++++++++++--------------
1 file changed, 81 insertions(+), 29 deletions(-)
diff --git a/src/gl-renderer.c b/src/gl-renderer.c
index 0e5afbe..c8dfa4b 100644
--- a/src/gl-renderer.c
+++ b/src/gl-renderer.c
@@ -50,18 +50,29 @@ struct gl_shader {
#define BUFFER_DAMAGE_COUNT 2
+enum gl_border_status {
+ BORDER_STATUS_CLEAN = 0,
+ BORDER_TOP_DIRTY = 1 << GL_RENDERER_BORDER_TOP,
+ BORDER_LEFT_DIRTY = 1 << GL_RENDERER_BORDER_LEFT,
+ BORDER_RIGHT_DIRTY = 1 << GL_RENDERER_BORDER_RIGHT,
+ BORDER_BOTTOM_DIRTY = 1 << GL_RENDERER_BORDER_BOTTOM,
+ BORDER_ALL_DIRTY = 0xf,
+ BORDER_SIZE_CHANGED = 0x10
+};
+
struct gl_border_image {
GLuint tex;
int32_t width, height;
int32_t tex_width;
- int dirty;
void *data;
};
struct gl_output_state {
EGLSurface egl_surface;
pixman_region32_t buffer_damage[BUFFER_DAMAGE_COUNT];
+ enum gl_border_status border_damage[BUFFER_DAMAGE_COUNT];
struct gl_border_image borders[4];
+ enum gl_border_status border_status;
};
enum buffer_type {
@@ -597,9 +608,12 @@ repaint_views(struct weston_output *output, pixman_region32_t *damage)
}
static void
-draw_output_border_texture(struct gl_border_image *img, int32_t x, int32_t y,
+draw_output_border_texture(struct gl_output_state *go,
+ enum gl_renderer_border_side side,
+ int32_t x, int32_t y,
int32_t width, int32_t height)
{
+ struct gl_border_image *img = &go->borders[side];
static GLushort indices [] = { 0, 1, 3, 3, 1, 2 };
if (!img->data) {
@@ -627,7 +641,7 @@ draw_output_border_texture(struct gl_border_image *img, int32_t x, int32_t y,
glBindTexture(GL_TEXTURE_2D, img->tex);
}
- if (img->dirty) {
+ if (go->border_status & (1 << side)) {
#ifdef GL_EXT_unpack_subimage
glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0);
@@ -636,7 +650,6 @@ draw_output_border_texture(struct gl_border_image *img, int32_t x, int32_t y,
glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
img->tex_width, img->height, 0,
GL_BGRA_EXT, GL_UNSIGNED_BYTE, img->data);
- img->dirty = 0;
}
GLfloat texcoord[] = {
@@ -665,7 +678,8 @@ draw_output_border_texture(struct gl_border_image *img, int32_t x, int32_t y,
}
static void
-draw_output_border(struct weston_output *output)
+draw_output_borders(struct weston_output *output,
+ enum gl_border_status border_status)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
@@ -674,6 +688,9 @@ draw_output_border(struct weston_output *output)
struct weston_matrix matrix;
int full_width, full_height;
+ if (border_status == BORDER_STATUS_CLEAN)
+ return; /* Clean. Nothing to do. */
+
top = &go->borders[GL_RENDERER_BORDER_TOP];
bottom = &go->borders[GL_RENDERER_BORDER_BOTTOM];
left = &go->borders[GL_RENDERER_BORDER_LEFT];
@@ -696,23 +713,27 @@ draw_output_border(struct weston_output *output)
glUniform1f(shader->alpha_uniform, 1);
glActiveTexture(GL_TEXTURE0);
- draw_output_border_texture(top,
- 0, 0,
- full_width, top->height);
- draw_output_border_texture(left,
- 0, top->height,
- left->width, output->current_mode->height);
- draw_output_border_texture(right,
- full_width - right->width, top->height,
- right->width, output->current_mode->height);
- draw_output_border_texture(bottom,
- 0, full_height - bottom->height,
- full_width, bottom->height);
+ if (border_status & BORDER_TOP_DIRTY)
+ draw_output_border_texture(go, GL_RENDERER_BORDER_TOP,
+ 0, 0,
+ full_width, top->height);
+ if (border_status & BORDER_LEFT_DIRTY)
+ draw_output_border_texture(go, GL_RENDERER_BORDER_LEFT,
+ 0, top->height,
+ left->width, output->current_mode->height);
+ if (border_status & BORDER_RIGHT_DIRTY)
+ draw_output_border_texture(go, GL_RENDERER_BORDER_RIGHT,
+ full_width - right->width, top->height,
+ right->width, output->current_mode->height);
+ if (border_status & BORDER_BOTTOM_DIRTY)
+ draw_output_border_texture(go, GL_RENDERER_BORDER_BOTTOM,
+ 0, full_height - bottom->height,
+ full_width, bottom->height);
}
static void
-output_get_buffer_damage(struct weston_output *output,
- pixman_region32_t *buffer_damage)
+output_get_damage(struct weston_output *output,
+ pixman_region32_t *buffer_damage, uint32_t *border_damage)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
@@ -729,17 +750,31 @@ output_get_buffer_damage(struct weston_output *output,
}
}
- if (buffer_age == 0 || buffer_age - 1 > BUFFER_DAMAGE_COUNT)
+ if (buffer_age == 0 || buffer_age - 1 > BUFFER_DAMAGE_COUNT) {
pixman_region32_copy(buffer_damage, &output->region);
- else
+ *border_damage = BORDER_ALL_DIRTY;
+ } else {
for (i = 0; i < buffer_age - 1; i++)
- pixman_region32_union(buffer_damage, buffer_damage,
- &go->buffer_damage[i]);
+ *border_damage |= go->border_damage[i];
+
+ if (*border_damage & BORDER_SIZE_CHANGED) {
+ /* If we've had a resize, we have to do a full
+ * repaint. */
+ *border_damage |= BORDER_ALL_DIRTY;
+ pixman_region32_copy(buffer_damage, &output->region);
+ } else {
+ for (i = 0; i < buffer_age - 1; i++)
+ pixman_region32_union(buffer_damage,
+ buffer_damage,
+ &go->buffer_damage[i]);
+ }
+ }
}
static void
output_rotate_damage(struct weston_output *output,
- pixman_region32_t *output_damage)
+ pixman_region32_t *output_damage,
+ enum gl_border_status border_status)
{
struct gl_output_state *go = get_output_state(output);
struct gl_renderer *gr = get_renderer(output->compositor);
@@ -748,10 +783,13 @@ output_rotate_damage(struct weston_output *output,
if (!gr->has_egl_buffer_age)
return;
- for (i = BUFFER_DAMAGE_COUNT - 1; i >= 1; i--)
+ for (i = BUFFER_DAMAGE_COUNT - 1; i >= 1; i--) {
+ go->border_damage[i] = go->border_damage[i - 1];
pixman_region32_copy(&go->buffer_damage[i],
&go->buffer_damage[i - 1]);
+ }
+ go->border_damage[0] = border_status;
pixman_region32_copy(&go->buffer_damage[0], output_damage);
}
@@ -765,6 +803,7 @@ gl_renderer_repaint_output(struct weston_output *output,
EGLBoolean ret;
static int errored;
pixman_region32_t buffer_damage, total_damage;
+ enum gl_border_status border_damage = BORDER_STATUS_CLEAN;
/* Calculate the viewport */
glViewport(go->borders[GL_RENDERER_BORDER_LEFT].width,
@@ -792,17 +831,18 @@ gl_renderer_repaint_output(struct weston_output *output,
pixman_region32_init(&total_damage);
pixman_region32_init(&buffer_damage);
- output_get_buffer_damage(output, &buffer_damage);
- output_rotate_damage(output, output_damage);
+ output_get_damage(output, &buffer_damage, &border_damage);
+ output_rotate_damage(output, output_damage, go->border_status);
pixman_region32_union(&total_damage, &buffer_damage, output_damage);
+ border_damage |= go->border_status;
repaint_views(output, &total_damage);
pixman_region32_fini(&total_damage);
pixman_region32_fini(&buffer_damage);
- draw_output_border(output);
+ draw_output_borders(output, border_damage);
pixman_region32_copy(&output->previous_damage, output_damage);
wl_signal_emit(&output->frame_signal, output);
@@ -814,6 +854,7 @@ gl_renderer_repaint_output(struct weston_output *output,
gl_renderer_print_egl_error_state();
}
+ go->border_status = BORDER_STATUS_CLEAN;
}
static int
@@ -1527,11 +1568,22 @@ gl_renderer_output_set_border(struct weston_output *output,
{
struct gl_output_state *go = get_output_state(output);
+ if (go->borders[side].width != width ||
+ go->borders[side].height != height)
+ /* In this case, we have to blow everything and do a full
+ * repaint. */
+ go->border_status |= BORDER_SIZE_CHANGED | BORDER_ALL_DIRTY;
+
+ if (data == NULL) {
+ width = 0;
+ height = 0;
+ }
+
go->borders[side].width = width;
go->borders[side].height = height;
go->borders[side].tex_width = tex_width;
go->borders[side].data = data;
- go->borders[side].dirty = 1;
+ go->border_status |= 1 << side;
}
static int
--
1.8.4.2
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