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Implement partial texture uploads

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This commit is contained in:
Drew DeVault 2017-08-09 22:17:40 -04:00
parent b109aecff9
commit 4de930542f
5 changed files with 100 additions and 6 deletions
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24
include/wlr/render.h
View file

@ -62,18 +62,34 @@ struct wlr_texture {
};
/**
* Uploads a pixel buffer to this texture. The buffer may be discarded after
* calling this function.
* Copies pixels to this texture. The buffer is not accessed after this function
* returns.
*/
bool wlr_texture_upload_pixels(struct wlr_texture *surf,
enum wl_shm_format format, int stride, int width, int height,
const unsigned char *pixels);
/**
* Uploads pixels from a wl_shm_buffer to this texture. The shm buffer may be
* invalidated after calling this function.
* Copies pixels to this texture. The buffer is not accessed after this function
* returns. Under some circumstances, this function may re-upload the entire
* buffer - therefore, the entire buffer must be valid.
*/
bool wlr_texture_update_pixels(struct wlr_texture *surf,
enum wl_shm_format format, int stride, int x, int y,
int width, int height, const unsigned char *pixels);
/**
* Copies pixels from a wl_shm_buffer into this texture. The buffer is not
* accessed after this function returns.
*/
bool wlr_texture_upload_shm(struct wlr_texture *surf, uint32_t format,
struct wl_shm_buffer *shm);
/**
* Copies a rectangle of pixels from a wl_shm_buffer onto the texture. The
* buffer is not accessed after this function returns. Under some circumstances,
* this function may re-upload the entire buffer - therefore, the entire buffer
* must be valid.
*/
bool wlr_texture_update_shm(struct wlr_texture *surf, uint32_t format,
int x, int y, int width, int height, struct wl_shm_buffer *shm);
/**
* Prepares a matrix with the appropriate scale for the given texture and
* multiplies it with the projection, producing a matrix that the shader can

5
include/wlr/render/interface.h
View file

@ -35,8 +35,13 @@ struct wlr_texture_impl {
bool (*upload_pixels)(struct wlr_texture_state *state,
enum wl_shm_format format, int stride, int width, int height,
const unsigned char *pixels);
bool (*update_pixels)(struct wlr_texture_state *state,
enum wl_shm_format format, int stride, int x, int y,
int width, int height, const unsigned char *pixels);
bool (*upload_shm)(struct wlr_texture_state *state, uint32_t format,
struct wl_shm_buffer *shm);
bool (*update_shm)(struct wlr_texture_state *surf, uint32_t format,
int x, int y, int width, int height, struct wl_shm_buffer *shm);
// TODO: egl
void (*get_matrix)(struct wlr_texture_state *state,
float (*matrix)[16], const float (*projection)[16], int x, int y);

62
render/gles2/texture.c
View file

@ -29,11 +29,36 @@ static bool gles2_texture_upload_pixels(struct wlr_texture_state *texture,
GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride));
GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0,
fmt->gl_format, fmt->gl_type, pixels));
GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0));
texture->wlr_texture->valid = true;
return true;
}
static bool gles2_texture_update_pixels(struct wlr_texture_state *texture,
enum wl_shm_format format, int stride, int x, int y,
int width, int height, const unsigned char *pixels) {
assert(texture && texture->wlr_texture->valid);
// TODO: Test if the unpack subimage extension is supported and adjust the
// upload strategy if not
if (texture->wlr_texture->format != format) {
return gles2_texture_upload_pixels(texture, format, stride,
width, height, pixels);
}
const struct pixel_format *fmt = gl_format_for_wl_format(format);
if (!fmt || !fmt->gl_format) {
wlr_log(L_ERROR, "No supported pixel format for this texture");
return false;
}
GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id));
GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, stride));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, x));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, y));
GL_CALL(glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height,
fmt->gl_format, fmt->gl_type, pixels));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0));
return true;
}
static bool gles2_texture_upload_shm(struct wlr_texture_state *texture,
uint32_t format, struct wl_shm_buffer *buffer) {
const struct pixel_format *fmt = gl_format_for_wl_format(format);
@ -54,6 +79,8 @@ static bool gles2_texture_upload_shm(struct wlr_texture_state *texture,
GL_CALL(glGenTextures(1, &texture->tex_id));
GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id));
GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, pitch));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0));
GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0,
fmt->gl_format, fmt->gl_type, pixels));
@ -62,6 +89,37 @@ static bool gles2_texture_upload_shm(struct wlr_texture_state *texture,
return true;
}
static bool gles2_texture_update_shm(struct wlr_texture_state *texture,
uint32_t format, int x, int y, int width, int height,
struct wl_shm_buffer *buffer) {
// TODO: Test if the unpack subimage extension is supported and adjust the
// upload strategy if not
assert(texture && texture->wlr_texture->valid);
if (texture->wlr_texture->format != format) {
return gles2_texture_upload_shm(texture, format, buffer);
}
const struct pixel_format *fmt = gl_format_for_wl_format(format);
if (!fmt || !fmt->gl_format) {
wlr_log(L_ERROR, "No supported pixel format for this texture");
return false;
}
wl_shm_buffer_begin_access(buffer);
uint8_t *pixels = wl_shm_buffer_get_data(buffer);
int pitch = wl_shm_buffer_get_stride(buffer) / (fmt->bpp / 8);
GL_CALL(glBindTexture(GL_TEXTURE_2D, texture->tex_id));
GL_CALL(glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, pitch));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, x));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, y));
GL_CALL(glTexImage2D(GL_TEXTURE_2D, 0, fmt->gl_format, width, height, 0,
fmt->gl_format, fmt->gl_type, pixels));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_PIXELS_EXT, 0));
GL_CALL(glPixelStorei(GL_UNPACK_SKIP_ROWS_EXT, 0));
wl_shm_buffer_end_access(buffer);
return true;
}
static void gles2_texture_get_matrix(struct wlr_texture_state *texture,
float (*matrix)[16], const float (*projection)[16], int x, int y) {
struct wlr_texture *_texture = texture->wlr_texture;
@ -89,7 +147,9 @@ static void gles2_texture_destroy(struct wlr_texture_state *texture) {
static struct wlr_texture_impl wlr_texture_impl = {
.upload_pixels = gles2_texture_upload_pixels,
.update_pixels = gles2_texture_update_pixels,
.upload_shm = gles2_texture_upload_shm,
.update_shm = gles2_texture_update_shm,
.get_matrix = gles2_texture_get_matrix,
.bind = gles2_texture_bind,
.destroy = gles2_texture_destroy,

13
render/wlr_texture.c
View file

@ -25,11 +25,24 @@ bool wlr_texture_upload_pixels(struct wlr_texture *texture, uint32_t format,
format, stride, width, height, pixels);
}
bool wlr_texture_update_pixels(struct wlr_texture *texture,
enum wl_shm_format format, int stride, int x, int y,
int width, int height, const unsigned char *pixels) {
return texture->impl->update_pixels(texture->state,
format, stride, x, y, width, height, pixels);
}
bool wlr_texture_upload_shm(struct wlr_texture *texture, uint32_t format,
struct wl_shm_buffer *shm) {
return texture->impl->upload_shm(texture->state, format, shm);
}
bool wlr_texture_update_shm(struct wlr_texture *texture, uint32_t format,
int x, int y, int width, int height, struct wl_shm_buffer *shm) {
return texture->impl->update_shm(texture->state, format,
x, y, width, height, shm);
}
void wlr_texture_get_matrix(struct wlr_texture *texture,
float (*matrix)[16], const float (*projection)[16], int x, int y) {
texture->impl->get_matrix(texture->state, matrix, projection, x, y);

2
types/wlr_surface.c
View file

@ -20,7 +20,7 @@ static void surface_attach(struct wl_client *client,
static void surface_damage(struct wl_client *client,
struct wl_resource *resource,
int32_t x, int32_t y, int32_t width, int32_t height) {
wlr_log(L_DEBUG, "TODO: surface damage");
wlr_log(L_DEBUG, "damage: %dx%d@%d,%d", width, height, x, y);
}
static void destroy_frame_callback(struct wl_resource *resource) {