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