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IABSD.fr/xenocara/xserver/glamor/glamor_glyphblt.c
matthieu
- xserver/glamor/glamor_glyphblt.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_index; Bool ret = FALSE; 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; glEnableVertexAttribArray(GLAMOR_VERTEX_POS); start_x += drawable->x; y += drawable->y; glamor_pixmap_loop(pixmap_priv, box_index) { int x; int n; int num_points, max_points; INT16 *points = NULL; int off_x, off_y; char *vbo_offset; if (!glamor_set_destination_drawable(drawable, box_index, FALSE, TRUE, prog->matrix_uniform, &off_x, &off_y)) goto bail; 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); } } ret = TRUE; bail: glDisableVertexAttribArray(GLAMOR_VERTEX_POS); return ret; } 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); } static Bool glamor_push_pixels_gl(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; glamor_program *prog; RegionPtr clip = gc->pCompositeClip; int box_index; int yy, xx; int num_points; INT16 *points = NULL; char *vbo_offset; Bool ret = FALSE; if (w * h > MAXINT / (2 * sizeof(float))) goto bail; 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; glEnableVertexAttribArray(GLAMOR_VERTEX_POS); points = glamor_get_vbo_space(screen, w * h * sizeof(INT16) * 2, &vbo_offset); num_points = 0; /* 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)) { *points++ = x + xx; *points++ = y + yy; num_points++; } } } glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_SHORT, GL_FALSE, 0, vbo_offset); glamor_put_vbo_space(screen); glamor_pixmap_loop(pixmap_priv, box_index) { if (!glamor_set_destination_drawable(drawable, box_index, FALSE, TRUE, prog->matrix_uniform, NULL, NULL)) goto bail; glDrawArrays(GL_POINTS, 0, num_points); } ret = TRUE; bail: glDisableVertexAttribArray(GLAMOR_VERTEX_POS); return ret; } void glamor_push_pixels(GCPtr pGC, PixmapPtr pBitmap, DrawablePtr pDrawable, int w, int h, int x, int y) { if (glamor_push_pixels_gl(pGC, pBitmap, pDrawable, w, h, x, y)) return; miPushPixels(pGC, pBitmap, pDrawable, w, h, x, y); }