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author | marha <marha@users.sourceforge.net> | 2014-07-19 15:12:53 +0200 |
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committer | marha <marha@users.sourceforge.net> | 2014-07-19 15:12:53 +0200 |
commit | 61c36feba19d918885022042ea62d068a698c83d (patch) | |
tree | fd351953eb2193fe548e7d0e2dca06b34b7c4f4d /xorg-server/glamor/glamor_dash.c | |
parent | 3865d60ef607cbb00c819e905e40d3628b8eca29 (diff) | |
parent | d0c30e7945e76ac119f6d867e27137c8a76f7e15 (diff) | |
download | vcxsrv-61c36feba19d918885022042ea62d068a698c83d.tar.gz vcxsrv-61c36feba19d918885022042ea62d068a698c83d.tar.bz2 vcxsrv-61c36feba19d918885022042ea62d068a698c83d.zip |
Merge remote-tracking branch 'origin/released'
Conflicts:
mesalib/src/glsl/ir.cpp
xorg-server/config/config.c
xorg-server/include/callback.h
xorg-server/include/colormap.h
xorg-server/include/cursor.h
xorg-server/include/dix.h
xorg-server/include/dixfont.h
xorg-server/include/dixgrabs.h
xorg-server/include/gc.h
xorg-server/include/gcstruct.h
xorg-server/include/input.h
xorg-server/include/os.h
xorg-server/include/pixmap.h
xorg-server/include/property.h
xorg-server/include/resource.h
xorg-server/include/scrnintstr.h
xorg-server/include/window.h
xorg-server/include/xkbsrv.h
xorg-server/mi/mi.h
Diffstat (limited to 'xorg-server/glamor/glamor_dash.c')
-rw-r--r-- | xorg-server/glamor/glamor_dash.c | 370 |
1 files changed, 370 insertions, 0 deletions
diff --git a/xorg-server/glamor/glamor_dash.c b/xorg-server/glamor/glamor_dash.c new file mode 100644 index 000000000..e8f60fa10 --- /dev/null +++ b/xorg-server/glamor/glamor_dash.c @@ -0,0 +1,370 @@ +/* + * 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 "glamor_priv.h" +#include "glamor_program.h" +#include "glamor_transform.h" +#include "glamor_transfer.h" +#include "glamor_prepare.h" + +static const char dash_vs_vars[] = + "attribute vec3 primitive;\n" + "varying float dash_offset;\n"; + +static const char dash_vs_exec[] = + " dash_offset = primitive.z / dash_length;\n" + GLAMOR_POS(gl_Position, primitive.xy); + +static const char dash_fs_vars[] = + "varying float dash_offset;\n"; + +static const char on_off_fs_exec[] = + " float pattern = texture2D(dash, vec2(dash_offset, 0.5)).w;\n" + " if (pattern == 0.0)\n" + " discard;\n"; + +/* XXX deal with stippled double dashed lines once we have stippling support */ +static const char double_fs_exec[] = + " float pattern = texture2D(dash, vec2(dash_offset, 0.5)).w;\n" + " if (pattern == 0.0)\n" + " gl_FragColor = bg;\n" + " else\n" + " gl_FragColor = fg;\n"; + + +static const glamor_facet glamor_facet_on_off_dash_lines = { + .version = 130, + .name = "poly_lines_on_off_dash", + .vs_vars = dash_vs_vars, + .vs_exec = dash_vs_exec, + .fs_vars = dash_fs_vars, + .fs_exec = on_off_fs_exec, + .locations = glamor_program_location_dash, +}; + +static const glamor_facet glamor_facet_double_dash_lines = { + .version = 130, + .name = "poly_lines_double_dash", + .vs_vars = dash_vs_vars, + .vs_exec = dash_vs_exec, + .fs_vars = dash_fs_vars, + .fs_exec = double_fs_exec, + .locations = (glamor_program_location_dash| + glamor_program_location_fg| + glamor_program_location_bg), +}; + +static PixmapPtr +glamor_get_dash_pixmap(GCPtr gc) +{ + glamor_gc_private *gc_priv = glamor_get_gc_private(gc); + ScreenPtr screen = gc->pScreen; + PixmapPtr pixmap; + int offset; + int d; + uint32_t pixel; + GCPtr scratch_gc; + + if (gc_priv->dash) + return gc_priv->dash; + + offset = 0; + for (d = 0; d < gc->numInDashList; d++) + offset += gc->dash[d]; + + pixmap = glamor_create_pixmap(screen, offset, 1, 8, 0); + if (!pixmap) + goto bail; + + scratch_gc = GetScratchGC(8, screen); + if (!scratch_gc) + goto bail_pixmap; + + pixel = 0xffffffff; + offset = 0; + for (d = 0; d < gc->numInDashList; d++) { + xRectangle rect; + ChangeGCVal changes; + + changes.val = pixel; + (void) ChangeGC(NullClient, scratch_gc, + GCForeground, &changes); + ValidateGC(&pixmap->drawable, scratch_gc); + rect.x = offset; + rect.y = 0; + rect.width = gc->dash[d]; + rect.height = 1; + scratch_gc->ops->PolyFillRect (&pixmap->drawable, scratch_gc, 1, &rect); + offset += gc->dash[d]; + pixel = ~pixel; + } + FreeScratchGC(scratch_gc); + + gc_priv->dash = pixmap; + return pixmap; + +bail_pixmap: + glamor_destroy_pixmap(pixmap); +bail: + return NULL; +} + +static glamor_program * +glamor_dash_setup(DrawablePtr drawable, GCPtr gc) +{ + 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); + PixmapPtr dash_pixmap; + glamor_pixmap_private *dash_priv; + glamor_program *prog; + + if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv)) + goto bail; + + if (gc->lineWidth != 0) + goto bail; + + dash_pixmap = glamor_get_dash_pixmap(gc); + dash_priv = glamor_get_pixmap_private(pixmap); + + if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(dash_priv)) + goto bail; + + glamor_make_current(glamor_priv); + + switch (gc->lineStyle) { + case LineOnOffDash: + prog = glamor_use_program_fill(pixmap, gc, + &glamor_priv->on_off_dash_line_progs, + &glamor_facet_on_off_dash_lines); + if (!prog) + goto bail_ctx; + break; + case LineDoubleDash: + if (gc->fillStyle != FillSolid) + goto bail_ctx; + + prog = &glamor_priv->double_dash_line_prog; + + if (!prog->prog) { + if (!glamor_build_program(screen, prog, + &glamor_facet_double_dash_lines, + NULL)) + goto bail_ctx; + } + + if (!glamor_use_program(pixmap, gc, prog, NULL)) + goto bail_ctx; + + glamor_set_color(pixmap, gc->fgPixel, prog->fg_uniform); + glamor_set_color(pixmap, gc->bgPixel, prog->bg_uniform); + break; + + default: + goto bail_ctx; + } + + + /* Set the dash pattern as texture 1 */ + + glActiveTexture(GL_TEXTURE1); + glBindTexture(GL_TEXTURE_2D, dash_priv->base.fbo->tex); + glUniform1i(prog->dash_uniform, 1); + glUniform1f(prog->dash_length_uniform, dash_pixmap->drawable.width); + + return prog; + +bail_ctx: + glDisable(GL_COLOR_LOGIC_OP); +bail: + return NULL; +} + +static void +glamor_dash_loop(DrawablePtr drawable, GCPtr gc, glamor_program *prog, + int n, GLenum mode) +{ + 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; + + glEnable(GL_SCISSOR_TEST); + + glamor_pixmap_loop(pixmap_priv, box_x, box_y) { + int nbox = RegionNumRects(gc->pCompositeClip); + BoxPtr box = RegionRects(gc->pCompositeClip); + + glamor_set_destination_drawable(drawable, box_x, box_y, TRUE, TRUE, + prog->matrix_uniform, &off_x, &off_y); + + while (nbox--) { + glScissor(box->x1 + off_x, + box->y1 + off_y, + box->x2 - box->x1, + box->y2 - box->y1); + box++; + glDrawArrays(mode, 0, n); + } + } + + glDisable(GL_SCISSOR_TEST); + glDisable(GL_COLOR_LOGIC_OP); + glDisableVertexAttribArray(GLAMOR_VERTEX_POS); +} + +static int +glamor_line_length(short x1, short y1, short x2, short y2) +{ + return max(abs(x2 - x1), abs(y2 - y1)); +} + +Bool +glamor_poly_lines_dash_gl(DrawablePtr drawable, GCPtr gc, + int mode, int n, DDXPointPtr points) +{ + ScreenPtr screen = drawable->pScreen; + glamor_program *prog; + short *v; + char *vbo_offset; + int add_last; + int dash_pos; + int prev_x, prev_y; + int i; + + if (n < 2) + return TRUE; + + if (!(prog = glamor_dash_setup(drawable, gc))) + return FALSE; + + add_last = 0; + if (gc->capStyle != CapNotLast) + add_last = 1; + + /* Set up the vertex buffers for the points */ + + v = glamor_get_vbo_space(drawable->pScreen, + (n + add_last) * 3 * sizeof (short), + &vbo_offset); + + glEnableVertexAttribArray(GLAMOR_VERTEX_POS); + glVertexAttribPointer(GLAMOR_VERTEX_POS, 3, GL_SHORT, GL_FALSE, + 3 * sizeof (short), vbo_offset); + + dash_pos = gc->dashOffset; + prev_x = prev_y = 0; + for (i = 0; i < n; i++) { + int this_x = points[i].x; + int this_y = points[i].y; + if (i) { + if (mode == CoordModePrevious) { + this_x += prev_x; + this_y += prev_y; + } + dash_pos += glamor_line_length(prev_x, prev_y, + this_x, this_y); + } + v[0] = prev_x = this_x; + v[1] = prev_y = this_y; + v[2] = dash_pos; + v += 3; + } + + if (add_last) { + v[0] = prev_x + 1; + v[1] = prev_y; + v[2] = dash_pos + 1; + } + + glamor_put_vbo_space(screen); + + glamor_dash_loop(drawable, gc, prog, n + add_last, GL_LINE_STRIP); + + return TRUE; +} + +static short * +glamor_add_segment(short *v, short x1, short y1, short x2, short y2, + int dash_start, int dash_end) +{ + v[0] = x1; + v[1] = y1; + v[2] = dash_start; + + v[3] = x2; + v[4] = y2; + v[5] = dash_end; + return v + 6; +} + +Bool +glamor_poly_segment_dash_gl(DrawablePtr drawable, GCPtr gc, + int nseg, xSegment *segs) +{ + ScreenPtr screen = drawable->pScreen; + glamor_program *prog; + short *v; + char *vbo_offset; + int dash_start = gc->dashOffset; + int add_last; + int i; + + if (!(prog = glamor_dash_setup(drawable, gc))) + return FALSE; + + add_last = 0; + if (gc->capStyle != CapNotLast) + add_last = 1; + + /* Set up the vertex buffers for the points */ + + v = glamor_get_vbo_space(drawable->pScreen, + (nseg<<add_last) * 6 * sizeof (short), + &vbo_offset); + + glEnableVertexAttribArray(GLAMOR_VERTEX_POS); + glVertexAttribPointer(GLAMOR_VERTEX_POS, 3, GL_SHORT, GL_FALSE, + 3 * sizeof (short), vbo_offset); + + for (i = 0; i < nseg; i++) { + int dash_end = dash_start + glamor_line_length(segs[i].x1, segs[i].y1, + segs[i].x2, segs[i].y2); + v = glamor_add_segment(v, + segs[i].x1, segs[i].y1, + segs[i].x2, segs[i].y2, + dash_start, dash_end); + if (add_last) + v = glamor_add_segment(v, + segs[i].x2, segs[i].y2, + segs[i].x2 + 1, segs[i].y2, + dash_end, dash_end + 1); + } + + glamor_put_vbo_space(screen); + + glamor_dash_loop(drawable, gc, prog, nseg << (1 + add_last), GL_LINES); + + return TRUE; +} |