static void
glamor_glyphs_flush(CARD8 op, PicturePtr src, PicturePtr dst,
glamor_program *prog,
struct glamor_glyph_atlas *atlas, int nglyph)
{
DrawablePtr drawable = dst->pDrawable;
glamor_screen_private *glamor_priv = glamor_get_screen_private(drawable->pScreen);
PixmapPtr atlas_pixmap = atlas->atlas;
glamor_pixmap_private *atlas_priv = glamor_get_pixmap_private(atlas_pixmap);
glamor_pixmap_fbo *atlas_fbo = glamor_pixmap_fbo_at(atlas_priv, 0, 0);
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
int box_x, box_y;
int off_x, off_y;
glamor_put_vbo_space(drawable->pScreen);
glEnable(GL_SCISSOR_TEST);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D, atlas_fbo->tex);
for (;;) {
if (!glamor_use_program_render(prog, op, src, dst))
break;
glUniform1i(prog->atlas_uniform, 1);
glamor_pixmap_loop(pixmap_priv, box_x, box_y) {
BoxPtr box = RegionRects(dst->pCompositeClip);
int nbox = RegionNumRects(dst->pCompositeClip);
glamor_set_destination_drawable(drawable, box_x, box_y, TRUE, FALSE, prog->matrix_uniform, &off_x, &off_y);
/* Run over the clip list, drawing the glyphs
* in each box
*/
while (nbox--) {
glScissor(box->x1 + off_x,
box->y1 + off_y,
box->x2 - box->x1,
box->y2 - box->y1);
box++;
if (glamor_glyph_use_130(glamor_priv))
glDrawArraysInstanced(GL_TRIANGLE_STRIP, 0, 4, nglyph);
else
glamor_glDrawArrays_GL_QUADS(glamor_priv, nglyph);
}
}
if (prog->alpha != glamor_program_alpha_ca_first)
break;
prog++;
}
void
glamor_set_destination_drawable(DrawablePtr drawable,
int box_index,
Bool do_drawable_translate,
Bool center_offset,
GLint matrix_uniform_location,
int *p_off_x,
int *p_off_y)
{
ScreenPtr screen = drawable->pScreen;
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
int off_x, off_y;
BoxPtr box = glamor_pixmap_box_at(pixmap_priv, box_index);
int w = box->x2 - box->x1;
int h = box->y2 - box->y1;
float scale_x = 2.0f / (float) w;
float scale_y = 2.0f / (float) h;
float center_adjust = 0.0f;
glamor_get_drawable_deltas(drawable, pixmap, &off_x, &off_y);
off_x -= box->x1;
off_y -= box->y1;
if (p_off_x) {
*p_off_x = off_x;
*p_off_y = off_y;
}
/* A tricky computation to find the right value for the two linear functions
* that transform rendering coordinates to pixmap coordinates
*
* pixmap_x = render_x + drawable->x + off_x
* pixmap_y = render_y + drawable->y + off_y
*
* gl_x = pixmap_x * 2 / width - 1
* gl_y = pixmap_y * 2 / height - 1
*
* gl_x = (render_x + drawable->x + off_x) * 2 / width - 1
*
* gl_x = (render_x) * 2 / width + (drawable->x + off_x) * 2 / width - 1
*/
if (do_drawable_translate) {
off_x += drawable->x;
off_y += drawable->y;
}
/*
* To get GL_POINTS drawn in the right spot, we need to adjust the
* coordinates by 1/2 a pixel.
*/
if (center_offset)
center_adjust = 0.5f;
glUniform4f(matrix_uniform_location,
scale_x, (off_x + center_adjust) * scale_x - 1.0f,
scale_y, (off_y + center_adjust) * scale_y - 1.0f);
glamor_set_destination_pixmap_fbo(glamor_priv, glamor_pixmap_fbo_at(pixmap_priv, box_index),
0, 0, w, h);
}
static Bool
glamor_copy_fbo_fbo_draw(DrawablePtr src,
DrawablePtr dst,
GCPtr gc,
BoxPtr box,
int nbox,
int dx,
int dy,
Bool reverse,
Bool upsidedown,
Pixel bitplane,
void *closure)
{
ScreenPtr screen = dst->pScreen;
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
PixmapPtr src_pixmap = glamor_get_drawable_pixmap(src);
PixmapPtr dst_pixmap = glamor_get_drawable_pixmap(dst);
glamor_pixmap_private *src_priv = glamor_get_pixmap_private(src_pixmap);
glamor_pixmap_private *dst_priv = glamor_get_pixmap_private(dst_pixmap);
int src_box_index, dst_box_index;
int dst_off_x, dst_off_y;
int src_off_x, src_off_y;
GLshort *v;
char *vbo_offset;
struct copy_args args;
glamor_program *prog;
const glamor_facet *copy_facet;
int n;
glamor_make_current(glamor_priv);
if (gc && !glamor_set_planemask(gc->depth, gc->planemask))
goto bail_ctx;
if (!glamor_set_alu(screen, gc ? gc->alu : GXcopy))
goto bail_ctx;
if (bitplane) {
prog = &glamor_priv->copy_plane_prog;
copy_facet = &glamor_facet_copyplane;
} else {
prog = &glamor_priv->copy_area_prog;
copy_facet = &glamor_facet_copyarea;
}
if (prog->failed)
goto bail_ctx;
if (!prog->prog) {
if (!glamor_build_program(screen, prog,
copy_facet, NULL, NULL, NULL))
goto bail_ctx;
}
args.src_pixmap = src_pixmap;
args.bitplane = bitplane;
/* Set up the vertex buffers for the points */
v = glamor_get_vbo_space(dst->pScreen, nbox * 8 * sizeof (int16_t), &vbo_offset);
glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_SHORT, GL_FALSE,
2 * sizeof (GLshort), vbo_offset);
for (n = 0; n < nbox; n++) {
v[0] = box->x1; v[1] = box->y1;
v[2] = box->x1; v[3] = box->y2;
v[4] = box->x2; v[5] = box->y2;
v[6] = box->x2; v[7] = box->y1;
v += 8;
box++;
}
glamor_put_vbo_space(screen);
glamor_get_drawable_deltas(src, src_pixmap, &src_off_x, &src_off_y);
glEnable(GL_SCISSOR_TEST);
glamor_pixmap_loop(src_priv, src_box_index) {
BoxPtr src_box = glamor_pixmap_box_at(src_priv, src_box_index);
args.dx = dx + src_off_x - src_box->x1;
args.dy = dy + src_off_y - src_box->y1;
args.src = glamor_pixmap_fbo_at(src_priv, src_box_index);
if (!glamor_use_program(dst_pixmap, gc, prog, &args))
goto bail_ctx;
glamor_pixmap_loop(dst_priv, dst_box_index) {
glamor_set_destination_drawable(dst, dst_box_index, FALSE, FALSE,
prog->matrix_uniform,
&dst_off_x, &dst_off_y);
glScissor(dst_off_x - args.dx,
dst_off_y - args.dy,
src_box->x2 - src_box->x1,
src_box->y2 - src_box->y1);
glamor_glDrawArrays_GL_QUADS(glamor_priv, nbox);
}
/*
* Write a region of bits into a pixmap
*/
void
glamor_upload_boxes(PixmapPtr pixmap, BoxPtr in_boxes, int in_nbox,
int dx_src, int dy_src,
int dx_dst, int dy_dst,
uint8_t *bits, uint32_t byte_stride)
{
ScreenPtr screen = pixmap->drawable.pScreen;
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
glamor_pixmap_private *priv = glamor_get_pixmap_private(pixmap);
int box_index;
int bytes_per_pixel = pixmap->drawable.bitsPerPixel >> 3;
GLenum type;
GLenum format;
glamor_format_for_pixmap(pixmap, &format, &type);
glamor_make_current(glamor_priv);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
if (glamor_priv->has_unpack_subimage)
glPixelStorei(GL_UNPACK_ROW_LENGTH, byte_stride / bytes_per_pixel);
glamor_pixmap_loop(priv, box_index) {
BoxPtr box = glamor_pixmap_box_at(priv, box_index);
glamor_pixmap_fbo *fbo = glamor_pixmap_fbo_at(priv, box_index);
BoxPtr boxes = in_boxes;
int nbox = in_nbox;
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, fbo->tex);
while (nbox--) {
/* compute drawable coordinates */
int x1 = MAX(boxes->x1 + dx_dst, box->x1);
int x2 = MIN(boxes->x2 + dx_dst, box->x2);
int y1 = MAX(boxes->y1 + dy_dst, box->y1);
int y2 = MIN(boxes->y2 + dy_dst, box->y2);
size_t ofs = (y1 - dy_dst + dy_src) * byte_stride;
ofs += (x1 - dx_dst + dx_src) * bytes_per_pixel;
boxes++;
if (x2 <= x1 || y2 <= y1)
continue;
if (glamor_priv->has_unpack_subimage ||
x2 - x1 == byte_stride / bytes_per_pixel) {
glTexSubImage2D(GL_TEXTURE_2D, 0,
x1 - box->x1, y1 - box->y1,
x2 - x1, y2 - y1,
format, type,
bits + ofs);
} else {
for (; y1 < y2; y1++, ofs += byte_stride)
glTexSubImage2D(GL_TEXTURE_2D, 0,
x1 - box->x1, y1 - box->y1,
x2 - x1, 1,
format, type,
bits + ofs);
}
}
}
