xenocara/xserver/glamor/glamor_glyphblt.c
matthieu 4f58590a42 Update to xserver 1.16.1.
Tested by naddy@, jsg@ & kettenis@
2014-09-27 17:52:59 +00:00

318 lines
11 KiB
C

/*
* Copyright © 2009 Intel Corporation
* Copyright © 1998 Keith Packard
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Zhigang Gong <zhigang.gong@gmail.com>
*
*/
#include "glamor_priv.h"
#include <dixfontstr.h>
#include "glamor_transform.h"
static const glamor_facet glamor_facet_poly_glyph_blt = {
.name = "poly_glyph_blt",
.vs_vars = "attribute vec2 primitive;\n",
.vs_exec = (" vec2 pos = vec2(0,0);\n"
GLAMOR_POS(gl_Position, primitive)),
};
static Bool
glamor_poly_glyph_blt_gl(DrawablePtr drawable, GCPtr gc,
int start_x, int y, unsigned int nglyph,
CharInfoPtr *ppci, void *pglyph_base)
{
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_program *prog;
RegionPtr clip = gc->pCompositeClip;
int box_x, box_y;
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
goto bail;
glamor_make_current(glamor_priv);
prog = glamor_use_program_fill(pixmap, gc, &glamor_priv->poly_glyph_blt_progs,
&glamor_facet_poly_glyph_blt);
if (!prog)
goto bail_ctx;
glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
start_x += drawable->x;
y += drawable->y;
glamor_pixmap_loop(pixmap_priv, box_x, box_y) {
int x;
int n;
int num_points, max_points;
INT16 *points = NULL;
int off_x, off_y;
char *vbo_offset;
glamor_set_destination_drawable(drawable, box_x, box_y, FALSE, TRUE, prog->matrix_uniform, &off_x, &off_y);
max_points = 500;
num_points = 0;
x = start_x;
for (n = 0; n < nglyph; n++) {
CharInfoPtr charinfo = ppci[n];
int w = GLYPHWIDTHPIXELS(charinfo);
int h = GLYPHHEIGHTPIXELS(charinfo);
uint8_t *glyphbits = FONTGLYPHBITS(NULL, charinfo);
if (w && h) {
int glyph_x = x + charinfo->metrics.leftSideBearing;
int glyph_y = y - charinfo->metrics.ascent;
int glyph_stride = GLYPHWIDTHBYTESPADDED(charinfo);
int xx, yy;
for (yy = 0; yy < h; yy++) {
uint8_t *glyph = glyphbits;
for (xx = 0; xx < w; glyph += ((xx&7) == 7), xx++) {
int pt_x_i = glyph_x + xx;
int pt_y_i = glyph_y + yy;
if (!(*glyph & (1 << (xx & 7))))
continue;
if (!RegionContainsPoint(clip, pt_x_i, pt_y_i, NULL))
continue;
if (!num_points) {
points = glamor_get_vbo_space(screen,
max_points * (2 * sizeof (INT16)),
&vbo_offset);
glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_SHORT,
GL_FALSE, 0, vbo_offset);
}
*points++ = pt_x_i;
*points++ = pt_y_i;
num_points++;
if (num_points == max_points) {
glamor_put_vbo_space(screen);
glDrawArrays(GL_POINTS, 0, num_points);
num_points = 0;
}
}
glyphbits += glyph_stride;
}
}
x += charinfo->metrics.characterWidth;
}
if (num_points) {
glamor_put_vbo_space(screen);
glDrawArrays(GL_POINTS, 0, num_points);
}
}
glDisable(GL_COLOR_LOGIC_OP);
glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
return TRUE;
bail_ctx:
glDisable(GL_COLOR_LOGIC_OP);
bail:
return FALSE;
}
void
glamor_poly_glyph_blt(DrawablePtr drawable, GCPtr gc,
int start_x, int y, unsigned int nglyph,
CharInfoPtr *ppci, void *pglyph_base)
{
if (glamor_poly_glyph_blt_gl(drawable, gc, start_x, y, nglyph, ppci, pglyph_base))
return;
miPolyGlyphBlt(drawable, gc, start_x, y, nglyph,
ppci, pglyph_base);
}
Bool
glamor_poly_glyph_blt_nf(DrawablePtr drawable, GCPtr gc,
int start_x, int y, unsigned int nglyph,
CharInfoPtr *ppci, void *pglyph_base)
{
if (glamor_poly_glyph_blt_gl(drawable, gc, start_x, y, nglyph, ppci, pglyph_base))
return TRUE;
if (glamor_ddx_fallback_check_pixmap(drawable) && glamor_ddx_fallback_check_gc(gc))
return FALSE;
miPolyGlyphBlt(drawable, gc, start_x, y, nglyph,
ppci, pglyph_base);
return TRUE;
}
Bool
glamor_image_glyph_blt_nf(DrawablePtr drawable, GCPtr gc,
int start_x, int y, unsigned int nglyph,
CharInfoPtr *ppci, void *pglyph_base)
{
miImageGlyphBlt(drawable, gc, start_x, y, nglyph, ppci, pglyph_base);
return TRUE;
}
static Bool
glamor_push_pixels_points(GCPtr gc, PixmapPtr bitmap,
DrawablePtr drawable, int w, int h, int x, int 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;
uint8_t *bitmap_data = bitmap->devPrivate.ptr;
int bitmap_stride = bitmap->devKind;
int off_x, off_y;
int yy, xx;
GLfloat xscale, yscale;
float color[4];
unsigned long fg_pixel = gc->fgPixel;
float *points, *next_point;
int num_points = 0;
char *vbo_offset;
RegionPtr clip;
if (w * h > MAXINT / (2 * sizeof(float)))
return FALSE;
if (gc->fillStyle != FillSolid) {
glamor_fallback("gc fillstyle not solid\n");
return FALSE;
}
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
return FALSE;
glamor_make_current(glamor_priv);
if (!glamor_set_alu(screen, gc->alu)) {
if (gc->alu == GXclear)
fg_pixel = 0;
else {
glamor_fallback("unsupported alu %x\n", gc->alu);
return FALSE;
}
}
if (!glamor_set_planemask(pixmap, gc->planemask)) {
glamor_fallback("Failed to set planemask in %s.\n", __FUNCTION__);
return FALSE;
}
glamor_get_drawable_deltas(drawable, pixmap, &off_x, &off_y);
glamor_set_destination_pixmap_priv_nc(pixmap_priv);
pixmap_priv_get_dest_scale(pixmap_priv, &xscale, &yscale);
glUseProgram(glamor_priv->solid_prog);
glamor_get_rgba_from_pixel(fg_pixel,
&color[0], &color[1], &color[2], &color[3],
format_for_pixmap(pixmap));
glUniform4fv(glamor_priv->solid_color_uniform_location, 1, color);
points = glamor_get_vbo_space(screen, w * h * sizeof(float) * 2,
&vbo_offset);
next_point = points;
clip = fbGetCompositeClip(gc);
/* Note that because fb sets miTranslate in the GC, our incoming X
* and Y are in screen coordinate space (same for spans, but not
* other operations).
*/
for (yy = 0; yy < h; yy++) {
uint8_t *bitmap_row = bitmap_data + yy * bitmap_stride;
for (xx = 0; xx < w; xx++) {
if (bitmap_row[xx / 8] & (1 << xx % 8) &&
RegionContainsPoint(clip,
x + xx,
y + yy,
NULL)) {
next_point[0] = v_from_x_coord_x(xscale, x + xx + off_x + 0.5);
if (glamor_priv->yInverted)
next_point[1] = v_from_x_coord_y_inverted(yscale, y + yy + off_y + 0.5);
else
next_point[1] = v_from_x_coord_y(yscale, y + yy + off_y + 0.5);
next_point += 2;
num_points++;
}
}
}
glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_FLOAT,
GL_FALSE, 2 * sizeof(float),
vbo_offset);
glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
glamor_put_vbo_space(screen);
glDrawArrays(GL_POINTS, 0, num_points);
glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
return TRUE;
}
static Bool
_glamor_push_pixels(GCPtr pGC, PixmapPtr pBitmap,
DrawablePtr pDrawable, int w, int h, int x, int y,
Bool fallback)
{
glamor_pixmap_private *pixmap_priv;
if (!fallback && glamor_ddx_fallback_check_pixmap(pDrawable)
&& glamor_ddx_fallback_check_pixmap(&pBitmap->drawable)
&& glamor_ddx_fallback_check_gc(pGC))
return FALSE;
pixmap_priv = glamor_get_pixmap_private(pBitmap);
if (pixmap_priv->type == GLAMOR_MEMORY) {
if (glamor_push_pixels_points(pGC, pBitmap, pDrawable, w, h, x, y))
return TRUE;
}
miPushPixels(pGC, pBitmap, pDrawable, w, h, x, y);
return TRUE;
}
void
glamor_push_pixels(GCPtr pGC, PixmapPtr pBitmap,
DrawablePtr pDrawable, int w, int h, int x, int y)
{
_glamor_push_pixels(pGC, pBitmap, pDrawable, w, h, x, y, TRUE);
}
Bool
glamor_push_pixels_nf(GCPtr pGC, PixmapPtr pBitmap,
DrawablePtr pDrawable, int w, int h, int x, int y)
{
return _glamor_push_pixels(pGC, pBitmap, pDrawable, w, h, x, y, FALSE);
}