glamor_pixmap_fbo *
glamor_es2_pixmap_read_prepare(PixmapPtr source, int x, int y, int w, int h,
GLenum format, GLenum type, int no_alpha,
int revert, int swap_rb)
{
glamor_pixmap_private *source_priv;
glamor_screen_private *glamor_priv;
ScreenPtr screen;
glamor_pixmap_fbo *temp_fbo;
float temp_xscale, temp_yscale, source_xscale, source_yscale;
static float vertices[8];
static float texcoords[8];
screen = source->drawable.pScreen;
glamor_priv = glamor_get_screen_private(screen);
source_priv = glamor_get_pixmap_private(source);
temp_fbo = glamor_create_fbo(glamor_priv, w, h, format, 0);
if (temp_fbo == NULL)
return NULL;
glamor_make_current(glamor_priv);
temp_xscale = 1.0 / w;
temp_yscale = 1.0 / h;
glamor_set_normalize_vcoords((struct glamor_pixmap_private *) NULL,
temp_xscale, temp_yscale, 0, 0, w, h,
vertices);
glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_FLOAT, GL_FALSE,
2 * sizeof(float), vertices);
glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
pixmap_priv_get_scale(source_priv, &source_xscale, &source_yscale);
glamor_set_normalize_tcoords(source_priv, source_xscale,
source_yscale,
x, y,
x + w, y + h,
texcoords);
glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2, GL_FLOAT, GL_FALSE,
2 * sizeof(float), texcoords);
glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, source_priv->base.fbo->tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glamor_set_destination_pixmap_fbo(temp_fbo, 0, 0, w, h);
glUseProgram(glamor_priv->finish_access_prog[no_alpha]);
glUniform1i(glamor_priv->finish_access_revert[no_alpha], revert);
glUniform1i(glamor_priv->finish_access_swap_rb[no_alpha], swap_rb);
glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
return temp_fbo;
}
PixmapPtr
glamor_create_pixmap(ScreenPtr screen, int w, int h, int depth,
unsigned int usage)
{
PixmapPtr pixmap;
glamor_pixmap_type_t type = GLAMOR_TEXTURE_ONLY;
glamor_pixmap_private *pixmap_priv;
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
glamor_pixmap_fbo *fbo = NULL;
int pitch;
GLenum format;
if (w > 32767 || h > 32767)
return NullPixmap;
if ((usage == GLAMOR_CREATE_PIXMAP_CPU
|| (usage == CREATE_PIXMAP_USAGE_GLYPH_PICTURE && w <= 64 && h <= 64)
|| (w == 0 && h == 0)
|| !glamor_check_pixmap_fbo_depth(depth))
|| (!GLAMOR_TEXTURED_LARGE_PIXMAP &&
!glamor_check_fbo_size(glamor_priv, w, h)))
return fbCreatePixmap(screen, w, h, depth, usage);
else
pixmap = fbCreatePixmap(screen, 0, 0, depth, usage);
pixmap_priv = calloc(1, sizeof(*pixmap_priv));
if (!pixmap_priv) {
fbDestroyPixmap(pixmap);
return fbCreatePixmap(screen, w, h, depth, usage);
}
glamor_set_pixmap_private(pixmap, pixmap_priv);
if (usage == GLAMOR_CREATE_PIXMAP_MAP)
type = GLAMOR_MEMORY_MAP;
pixmap_priv->base.pixmap = pixmap;
pixmap_priv->base.glamor_priv = glamor_priv;
format = gl_iformat_for_pixmap(pixmap);
pitch = (((w * pixmap->drawable.bitsPerPixel + 7) / 8) + 3) & ~3;
screen->ModifyPixmapHeader(pixmap, w, h, 0, 0, pitch, NULL);
if (usage == GLAMOR_CREATE_PIXMAP_NO_TEXTURE) {
pixmap_priv->type = GLAMOR_TEXTURE_ONLY;
pixmap_priv->base.box.x1 = 0;
pixmap_priv->base.box.y1 = 0;
pixmap_priv->base.box.x2 = w;
pixmap_priv->base.box.y2 = h;
return pixmap;
}
else if (type == GLAMOR_MEMORY_MAP || usage == GLAMOR_CREATE_NO_LARGE ||
glamor_check_fbo_size(glamor_priv, w, h))
{
pixmap_priv->type = type;
pixmap_priv->base.box.x1 = 0;
pixmap_priv->base.box.y1 = 0;
pixmap_priv->base.box.x2 = w;
pixmap_priv->base.box.y2 = h;
fbo = glamor_create_fbo(glamor_priv, w, h, format, usage);
} else {
int tile_size = glamor_priv->max_fbo_size;
DEBUGF("Create LARGE pixmap %p width %d height %d, tile size %d\n", pixmap, w, h, tile_size);
pixmap_priv->type = GLAMOR_TEXTURE_LARGE;
fbo = glamor_create_fbo_array(glamor_priv, w, h, format, usage,
tile_size, tile_size, pixmap_priv);
}
if (fbo == NULL) {
fbDestroyPixmap(pixmap);
free(pixmap_priv);
return fbCreatePixmap(screen, w, h, depth, usage);
}
glamor_pixmap_attach_fbo(pixmap, fbo);
return pixmap;
}