573 lines
20 KiB
C
573 lines
20 KiB
C
/*
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* Copyright © 2014 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <stdlib.h>
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#include "Xprintf.h"
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#include "glamor_priv.h"
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#include "glamor_transform.h"
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#include "glamor_transfer.h"
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#include <mipict.h>
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#define DEFAULT_ATLAS_DIM 1024
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static DevPrivateKeyRec glamor_glyph_private_key;
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struct glamor_glyph_private {
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int16_t x;
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int16_t y;
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uint32_t serial;
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};
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struct glamor_glyph_atlas {
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PixmapPtr atlas;
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PictFormatPtr format;
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int x, y;
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int row_height;
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int nglyph;
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uint32_t serial;
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};
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static inline struct glamor_glyph_private *glamor_get_glyph_private(PixmapPtr pixmap) {
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return dixLookupPrivate(&pixmap->devPrivates, &glamor_glyph_private_key);
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}
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static inline void
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glamor_copy_glyph(PixmapPtr glyph_pixmap,
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DrawablePtr atlas_draw,
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int16_t x,
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int16_t y)
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{
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DrawablePtr glyph_draw = &glyph_pixmap->drawable;
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BoxRec box = {
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.x1 = 0,
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.y1 = 0,
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.x2 = glyph_draw->width,
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.y2 = glyph_draw->height,
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};
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PixmapPtr upload_pixmap = glyph_pixmap;
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if (glyph_pixmap->drawable.bitsPerPixel != atlas_draw->bitsPerPixel) {
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/* If we're dealing with 1-bit glyphs, we copy them to a
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* temporary 8-bit pixmap and upload them from there, since
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* that's what GL can handle.
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*/
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ScreenPtr screen = atlas_draw->pScreen;
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GCPtr scratch_gc;
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ChangeGCVal changes[2];
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upload_pixmap = glamor_create_pixmap(screen,
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glyph_draw->width,
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glyph_draw->height,
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atlas_draw->depth,
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GLAMOR_CREATE_PIXMAP_CPU);
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if (!upload_pixmap)
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return;
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scratch_gc = GetScratchGC(upload_pixmap->drawable.depth, screen);
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if (!scratch_gc) {
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glamor_destroy_pixmap(upload_pixmap);
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return;
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}
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changes[0].val = 0xff;
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changes[1].val = 0x00;
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if (ChangeGC(NullClient, scratch_gc,
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GCForeground|GCBackground, changes) != Success) {
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glamor_destroy_pixmap(upload_pixmap);
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FreeScratchGC(scratch_gc);
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return;
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}
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ValidateGC(&upload_pixmap->drawable, scratch_gc);
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(*scratch_gc->ops->CopyPlane)(glyph_draw,
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&upload_pixmap->drawable,
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scratch_gc,
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0, 0,
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glyph_draw->width,
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glyph_draw->height,
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0, 0, 0x1);
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}
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glamor_upload_boxes((PixmapPtr) atlas_draw,
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&box, 1,
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0, 0,
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x, y,
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upload_pixmap->devPrivate.ptr,
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upload_pixmap->devKind);
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if (upload_pixmap != glyph_pixmap)
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glamor_destroy_pixmap(upload_pixmap);
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}
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static Bool
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glamor_glyph_atlas_init(ScreenPtr screen, struct glamor_glyph_atlas *atlas)
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{
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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PictFormatPtr format = atlas->format;
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atlas->atlas = glamor_create_pixmap(screen, glamor_priv->glyph_atlas_dim,
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glamor_priv->glyph_atlas_dim, format->depth,
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GLAMOR_CREATE_FBO_NO_FBO);
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if (!glamor_pixmap_has_fbo(atlas->atlas)) {
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glamor_destroy_pixmap(atlas->atlas);
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atlas->atlas = NULL;
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}
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atlas->x = 0;
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atlas->y = 0;
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atlas->row_height = 0;
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atlas->serial++;
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atlas->nglyph = 0;
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return TRUE;
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}
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static Bool
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glamor_glyph_can_add(struct glamor_glyph_atlas *atlas, int dim, DrawablePtr glyph_draw)
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{
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/* Step down */
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if (atlas->x + glyph_draw->width > dim) {
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atlas->x = 0;
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atlas->y += atlas->row_height;
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atlas->row_height = 0;
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}
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/* Check for overfull */
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if (atlas->y + glyph_draw->height > dim)
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return FALSE;
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return TRUE;
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}
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static Bool
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glamor_glyph_add(struct glamor_glyph_atlas *atlas, DrawablePtr glyph_draw)
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{
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PixmapPtr glyph_pixmap = (PixmapPtr) glyph_draw;
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struct glamor_glyph_private *glyph_priv = glamor_get_glyph_private(glyph_pixmap);
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glamor_copy_glyph(glyph_pixmap, &atlas->atlas->drawable, atlas->x, atlas->y);
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glyph_priv->x = atlas->x;
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glyph_priv->y = atlas->y;
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glyph_priv->serial = atlas->serial;
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atlas->x += glyph_draw->width;
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if (atlas->row_height < glyph_draw->height)
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atlas->row_height = glyph_draw->height;
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atlas->nglyph++;
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return TRUE;
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}
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static const glamor_facet glamor_facet_composite_glyphs_130 = {
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.name = "composite_glyphs",
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.version = 130,
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.vs_vars = ("attribute vec4 primitive;\n"
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"attribute vec2 source;\n"
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"varying vec2 glyph_pos;\n"),
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.vs_exec = (" vec2 pos = primitive.zw * vec2(gl_VertexID&1, (gl_VertexID&2)>>1);\n"
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GLAMOR_POS(gl_Position, (primitive.xy + pos))
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" glyph_pos = (source + pos) * ATLAS_DIM_INV;\n"),
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.fs_vars = ("varying vec2 glyph_pos;\n"
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"out vec4 color0;\n"
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"out vec4 color1;\n"),
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.fs_exec = (" vec4 mask = texture2D(atlas, glyph_pos);\n"),
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.source_name = "source",
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.locations = glamor_program_location_atlas,
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};
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static const glamor_facet glamor_facet_composite_glyphs_120 = {
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.name = "composite_glyphs",
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.vs_vars = ("attribute vec2 primitive;\n"
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"attribute vec2 source;\n"
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"varying vec2 glyph_pos;\n"),
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.vs_exec = (GLAMOR_POS(gl_Position, primitive)
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" glyph_pos = source.xy * ATLAS_DIM_INV;\n"),
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.fs_vars = ("varying vec2 glyph_pos;\n"),
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.fs_exec = (" vec4 mask = texture2D(atlas, glyph_pos);\n"),
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.source_name = "source",
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.locations = glamor_program_location_atlas,
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};
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static inline Bool
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glamor_glyph_use_130(glamor_screen_private *glamor_priv) {
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return glamor_priv->glsl_version >= 130;
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}
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static Bool
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glamor_glyphs_init_facet(ScreenPtr screen)
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{
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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return asprintf(&glamor_priv->glyph_defines, "#define ATLAS_DIM_INV %20.18f\n", 1.0/glamor_priv->glyph_atlas_dim) > 0;
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}
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static void
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glamor_glyphs_fini_facet(ScreenPtr screen)
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{
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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free(glamor_priv->glyph_defines);
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}
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static void
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glamor_glyphs_flush(CARD8 op, PicturePtr src, PicturePtr dst,
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glamor_program *prog,
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struct glamor_glyph_atlas *atlas, int nglyph)
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{
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DrawablePtr drawable = dst->pDrawable;
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glamor_screen_private *glamor_priv = glamor_get_screen_private(drawable->pScreen);
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PixmapPtr atlas_pixmap = atlas->atlas;
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glamor_pixmap_private *atlas_priv = glamor_get_pixmap_private(atlas_pixmap);
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glamor_pixmap_fbo *atlas_fbo = glamor_pixmap_fbo_at(atlas_priv, 0);
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PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
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glamor_pixmap_private *pixmap_priv = glamor_get_pixmap_private(pixmap);
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int box_index;
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int off_x, off_y;
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glamor_put_vbo_space(drawable->pScreen);
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glEnable(GL_SCISSOR_TEST);
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glamor_bind_texture(glamor_priv, GL_TEXTURE1, atlas_fbo, FALSE);
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for (;;) {
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if (!glamor_use_program_render(prog, op, src, dst))
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break;
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glUniform1i(prog->atlas_uniform, 1);
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glamor_pixmap_loop(pixmap_priv, box_index) {
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BoxPtr box = RegionRects(dst->pCompositeClip);
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int nbox = RegionNumRects(dst->pCompositeClip);
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glamor_set_destination_drawable(drawable, box_index, TRUE, FALSE,
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prog->matrix_uniform,
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&off_x, &off_y);
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/* Run over the clip list, drawing the glyphs
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* in each box
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*/
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while (nbox--) {
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glScissor(box->x1 + off_x,
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box->y1 + off_y,
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box->x2 - box->x1,
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box->y2 - box->y1);
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box++;
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if (glamor_glyph_use_130(glamor_priv))
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glDrawArraysInstanced(GL_TRIANGLE_STRIP, 0, 4, nglyph);
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else
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glamor_glDrawArrays_GL_QUADS(glamor_priv, nglyph);
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}
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}
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if (prog->alpha != glamor_program_alpha_ca_first)
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break;
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prog++;
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}
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glDisable(GL_SCISSOR_TEST);
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if (glamor_glyph_use_130(glamor_priv)) {
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glVertexAttribDivisor(GLAMOR_VERTEX_SOURCE, 0);
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glVertexAttribDivisor(GLAMOR_VERTEX_POS, 0);
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}
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glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
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glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
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glDisable(GL_BLEND);
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}
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static GLshort *
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glamor_glyph_start(ScreenPtr screen, int count)
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{
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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GLshort *v;
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char *vbo_offset;
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/* Set up the vertex buffers for the font and destination */
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if (glamor_glyph_use_130(glamor_priv)) {
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v = glamor_get_vbo_space(screen, count * (6 * sizeof (GLshort)), &vbo_offset);
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glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
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glVertexAttribDivisor(GLAMOR_VERTEX_POS, 1);
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glVertexAttribPointer(GLAMOR_VERTEX_POS, 4, GL_SHORT, GL_FALSE,
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6 * sizeof (GLshort), vbo_offset);
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glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
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glVertexAttribDivisor(GLAMOR_VERTEX_SOURCE, 1);
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glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2, GL_SHORT, GL_FALSE,
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6 * sizeof (GLshort), vbo_offset + 4 * sizeof (GLshort));
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} else {
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v = glamor_get_vbo_space(screen, count * (16 * sizeof (GLshort)), &vbo_offset);
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glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
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glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_SHORT, GL_FALSE,
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4 * sizeof (GLshort), vbo_offset);
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glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
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glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2, GL_SHORT, GL_FALSE,
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4 * sizeof (GLshort), vbo_offset + 2 * sizeof (GLshort));
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}
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return v;
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}
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static inline struct glamor_glyph_atlas *
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glamor_atlas_for_glyph(glamor_screen_private *glamor_priv, DrawablePtr drawable)
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{
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if (drawable->depth == 32)
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return glamor_priv->glyph_atlas_argb;
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else
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return glamor_priv->glyph_atlas_a;
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}
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void
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glamor_composite_glyphs(CARD8 op,
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PicturePtr src,
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PicturePtr dst,
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PictFormatPtr glyph_format,
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INT16 x_src,
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INT16 y_src, int nlist, GlyphListPtr list,
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GlyphPtr *glyphs)
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{
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int glyphs_queued;
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GLshort *v = NULL;
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DrawablePtr drawable = dst->pDrawable;
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ScreenPtr screen = drawable->pScreen;
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glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
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glamor_program *prog = NULL;
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glamor_program_render *glyphs_program = &glamor_priv->glyphs_program;
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struct glamor_glyph_atlas *glyph_atlas = NULL;
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int x = 0, y = 0;
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int n;
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int glyph_atlas_dim = glamor_priv->glyph_atlas_dim;
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int glyph_max_dim = glamor_priv->glyph_max_dim;
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int nglyph = 0;
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int screen_num = screen->myNum;
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for (n = 0; n < nlist; n++)
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nglyph += list[n].len;
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glamor_make_current(glamor_priv);
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glyphs_queued = 0;
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while (nlist--) {
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x += list->xOff;
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y += list->yOff;
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n = list->len;
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list++;
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while (n--) {
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GlyphPtr glyph = *glyphs++;
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/* Glyph not empty?
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*/
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if (glyph->info.width && glyph->info.height) {
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PicturePtr glyph_pict = GlyphPicture(glyph)[screen_num];
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DrawablePtr glyph_draw = glyph_pict->pDrawable;
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/* Need to draw with slow path?
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*/
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if (_X_UNLIKELY(glyph_draw->width > glyph_max_dim ||
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glyph_draw->height > glyph_max_dim ||
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!glamor_pixmap_is_memory((PixmapPtr)glyph_draw)))
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{
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if (glyphs_queued) {
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glamor_glyphs_flush(op, src, dst, prog, glyph_atlas, glyphs_queued);
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glyphs_queued = 0;
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}
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bail_one:
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glamor_composite(op, src, glyph_pict, dst,
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x_src + (x - glyph->info.x), (y - glyph->info.y),
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0, 0,
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x - glyph->info.x, y - glyph->info.y,
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glyph_draw->width, glyph_draw->height);
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} else {
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struct glamor_glyph_private *glyph_priv = glamor_get_glyph_private((PixmapPtr)(glyph_draw));
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struct glamor_glyph_atlas *next_atlas = glamor_atlas_for_glyph(glamor_priv, glyph_draw);
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/* Switching source glyph format?
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*/
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if (_X_UNLIKELY(next_atlas != glyph_atlas)) {
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if (glyphs_queued) {
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glamor_glyphs_flush(op, src, dst, prog, glyph_atlas, glyphs_queued);
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glyphs_queued = 0;
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}
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glyph_atlas = next_atlas;
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}
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/* Glyph not cached in current atlas?
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*/
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if (_X_UNLIKELY(glyph_priv->serial != glyph_atlas->serial)) {
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if (!glamor_glyph_can_add(glyph_atlas, glyph_atlas_dim, glyph_draw)) {
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if (glyphs_queued) {
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glamor_glyphs_flush(op, src, dst, prog, glyph_atlas, glyphs_queued);
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glyphs_queued = 0;
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}
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if (glyph_atlas->atlas) {
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(*screen->DestroyPixmap)(glyph_atlas->atlas);
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glyph_atlas->atlas = NULL;
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}
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}
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if (!glyph_atlas->atlas) {
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glamor_glyph_atlas_init(screen, glyph_atlas);
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if (!glyph_atlas->atlas)
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goto bail_one;
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}
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glamor_glyph_add(glyph_atlas, glyph_draw);
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}
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/* First glyph in the current atlas?
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*/
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if (_X_UNLIKELY(glyphs_queued == 0)) {
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if (glamor_glyph_use_130(glamor_priv))
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prog = glamor_setup_program_render(op, src, glyph_pict, dst,
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glyphs_program,
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&glamor_facet_composite_glyphs_130,
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glamor_priv->glyph_defines);
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else
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prog = glamor_setup_program_render(op, src, glyph_pict, dst,
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glyphs_program,
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&glamor_facet_composite_glyphs_120,
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glamor_priv->glyph_defines);
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if (!prog)
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goto bail_one;
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v = glamor_glyph_start(screen, nglyph);
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}
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/* Add the glyph
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*/
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glyphs_queued++;
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if (_X_LIKELY(glamor_glyph_use_130(glamor_priv))) {
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v[0] = x - glyph->info.x;
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v[1] = y - glyph->info.y;
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v[2] = glyph_draw->width;
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v[3] = glyph_draw->height;
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v[4] = glyph_priv->x;
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v[5] = glyph_priv->y;
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v += 6;
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} else {
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v[0] = x - glyph->info.x;
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v[1] = y - glyph->info.y;
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v[2] = glyph_priv->x;
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v[3] = glyph_priv->y;
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v += 4;
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v[0] = x - glyph->info.x + glyph_draw->width;
|
|
v[1] = y - glyph->info.y;
|
|
v[2] = glyph_priv->x + glyph_draw->width;
|
|
v[3] = glyph_priv->y;
|
|
v += 4;
|
|
|
|
v[0] = x - glyph->info.x + glyph_draw->width;
|
|
v[1] = y - glyph->info.y + glyph_draw->height;
|
|
v[2] = glyph_priv->x + glyph_draw->width;
|
|
v[3] = glyph_priv->y + glyph_draw->height;
|
|
v += 4;
|
|
|
|
v[0] = x - glyph->info.x;
|
|
v[1] = y - glyph->info.y + glyph_draw->height;
|
|
v[2] = glyph_priv->x;
|
|
v[3] = glyph_priv->y + glyph_draw->height;
|
|
v += 4;
|
|
}
|
|
}
|
|
}
|
|
x += glyph->info.xOff;
|
|
y += glyph->info.yOff;
|
|
nglyph--;
|
|
}
|
|
}
|
|
|
|
if (glyphs_queued)
|
|
glamor_glyphs_flush(op, src, dst, prog, glyph_atlas, glyphs_queued);
|
|
|
|
return;
|
|
}
|
|
|
|
static struct glamor_glyph_atlas *
|
|
glamor_alloc_glyph_atlas(ScreenPtr screen, int depth, CARD32 f)
|
|
{
|
|
PictFormatPtr format;
|
|
struct glamor_glyph_atlas *glyph_atlas;
|
|
|
|
format = PictureMatchFormat(screen, depth, f);
|
|
if (!format)
|
|
return NULL;
|
|
glyph_atlas = calloc (1, sizeof (struct glamor_glyph_atlas));
|
|
if (!glyph_atlas)
|
|
return NULL;
|
|
glyph_atlas->format = format;
|
|
glyph_atlas->serial = 1;
|
|
|
|
return glyph_atlas;
|
|
}
|
|
|
|
Bool
|
|
glamor_composite_glyphs_init(ScreenPtr screen)
|
|
{
|
|
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
|
|
|
|
if (!dixRegisterPrivateKey(&glamor_glyph_private_key, PRIVATE_PIXMAP, sizeof (struct glamor_glyph_private)))
|
|
return FALSE;
|
|
|
|
/* Make glyph atlases of a reasonable size, but no larger than the maximum
|
|
* supported by the hardware
|
|
*/
|
|
glamor_priv->glyph_atlas_dim = MIN(DEFAULT_ATLAS_DIM, glamor_priv->max_fbo_size);
|
|
|
|
/* Don't stick huge glyphs in the atlases */
|
|
glamor_priv->glyph_max_dim = glamor_priv->glyph_atlas_dim / 8;
|
|
|
|
glamor_priv->glyph_atlas_a = glamor_alloc_glyph_atlas(screen, 8, PICT_a8);
|
|
if (!glamor_priv->glyph_atlas_a)
|
|
return FALSE;
|
|
glamor_priv->glyph_atlas_argb = glamor_alloc_glyph_atlas(screen, 32, PICT_a8r8g8b8);
|
|
if (!glamor_priv->glyph_atlas_argb) {
|
|
free (glamor_priv->glyph_atlas_a);
|
|
return FALSE;
|
|
}
|
|
if (!glamor_glyphs_init_facet(screen))
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
glamor_free_glyph_atlas(struct glamor_glyph_atlas *atlas)
|
|
{
|
|
if (!atlas)
|
|
return;
|
|
if (atlas->atlas)
|
|
(*atlas->atlas->drawable.pScreen->DestroyPixmap)(atlas->atlas);
|
|
free (atlas);
|
|
}
|
|
|
|
void
|
|
glamor_composite_glyphs_fini(ScreenPtr screen)
|
|
{
|
|
glamor_screen_private *glamor_priv = glamor_get_screen_private(screen);
|
|
|
|
glamor_glyphs_fini_facet(screen);
|
|
glamor_free_glyph_atlas(glamor_priv->glyph_atlas_a);
|
|
glamor_free_glyph_atlas(glamor_priv->glyph_atlas_argb);
|
|
}
|