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Diffstat (limited to 'xorg-server/glamor/glamor_segs.c')
-rw-r--r--xorg-server/glamor/glamor_segs.c188
1 files changed, 188 insertions, 0 deletions
diff --git a/xorg-server/glamor/glamor_segs.c b/xorg-server/glamor/glamor_segs.c
new file mode 100644
index 000000000..ff0daef10
--- /dev/null
+++ b/xorg-server/glamor/glamor_segs.c
@@ -0,0 +1,188 @@
+/*
+ * 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_prepare.h"
+
+static const glamor_facet glamor_facet_poly_segment = {
+ .name = "poly_segment",
+ .vs_vars = "attribute vec2 primitive;\n",
+ .vs_exec = (" vec2 pos = vec2(0.0,0.0);\n"
+ GLAMOR_POS(gl_Position, primitive.xy)),
+};
+
+static Bool
+glamor_poly_segment_solid_gl(DrawablePtr drawable, GCPtr gc,
+ int nseg, xSegment *segs)
+{
+ 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;
+ int off_x, off_y;
+ xSegment *v;
+ char *vbo_offset;
+ int box_x, box_y;
+ int add_last;
+
+ pixmap_priv = glamor_get_pixmap_private(pixmap);
+ if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
+ goto bail;
+
+ add_last = 0;
+ if (gc->capStyle != CapNotLast)
+ add_last = 1;
+
+ glamor_make_current(glamor_priv);
+
+ prog = glamor_use_program_fill(pixmap, gc,
+ &glamor_priv->poly_segment_program,
+ &glamor_facet_poly_segment);
+
+ if (!prog)
+ goto bail_ctx;
+
+ /* Set up the vertex buffers for the points */
+
+ v = glamor_get_vbo_space(drawable->pScreen,
+ (nseg << add_last) * sizeof (xSegment),
+ &vbo_offset);
+
+ glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
+ glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_SHORT, GL_FALSE,
+ sizeof(DDXPointRec), vbo_offset);
+
+ if (add_last) {
+ int i, j;
+ for (i = 0, j=0; i < nseg; i++) {
+ v[j++] = segs[i];
+ v[j].x1 = segs[i].x2;
+ v[j].y1 = segs[i].y2;
+ v[j].x2 = segs[i].x2+1;
+ v[j].y2 = segs[i].y2;
+ j++;
+ }
+ } else
+ memcpy(v, segs, nseg * sizeof (xSegment));
+
+ glamor_put_vbo_space(screen);
+
+ 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(GL_LINES, 0, nseg << (1 + add_last));
+ }
+ }
+
+ glDisable(GL_SCISSOR_TEST);
+ glDisable(GL_COLOR_LOGIC_OP);
+ glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
+
+ return TRUE;
+bail_ctx:
+ glDisable(GL_COLOR_LOGIC_OP);
+bail:
+ return FALSE;
+}
+
+static Bool
+glamor_poly_segment_gl(DrawablePtr drawable, GCPtr gc,
+ int nseg, xSegment *segs)
+{
+ if (gc->lineWidth != 0)
+ return FALSE;
+
+ switch (gc->lineStyle) {
+ case LineSolid:
+ return glamor_poly_segment_solid_gl(drawable, gc, nseg, segs);
+ case LineOnOffDash:
+ return glamor_poly_segment_dash_gl(drawable, gc, nseg, segs);
+ case LineDoubleDash:
+ if (gc->fillStyle == FillTiled)
+ return glamor_poly_segment_solid_gl(drawable, gc, nseg, segs);
+ else
+ return glamor_poly_segment_dash_gl(drawable, gc, nseg, segs);
+ default:
+ return FALSE;
+ }
+}
+
+static void
+glamor_poly_segment_bail(DrawablePtr drawable, GCPtr gc,
+ int nseg, xSegment *segs)
+{
+ glamor_fallback("to %p (%c)\n", drawable,
+ glamor_get_drawable_location(drawable));
+
+ if (gc->lineWidth == 0) {
+ if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RW) &&
+ glamor_prepare_access_gc(gc)) {
+ fbPolySegment(drawable, gc, nseg, segs);
+ }
+ glamor_finish_access_gc(gc);
+ glamor_finish_access(drawable);
+ } else
+ miPolySegment(drawable, gc, nseg, segs);
+}
+
+void
+glamor_poly_segment(DrawablePtr drawable, GCPtr gc,
+ int nseg, xSegment *segs)
+{
+ if (glamor_poly_segment_gl(drawable, gc, nseg, segs))
+ return;
+
+ glamor_poly_segment_bail(drawable, gc, nseg, segs);
+}
+
+Bool
+glamor_poly_segment_nf(DrawablePtr drawable, GCPtr gc,
+ int nseg, xSegment *segs)
+{
+ if (glamor_poly_segment_gl(drawable, gc, nseg, segs))
+ return TRUE;
+
+ if (glamor_ddx_fallback_check_pixmap(drawable) &&
+ glamor_ddx_fallback_check_gc(gc))
+ {
+ return FALSE;
+ }
+
+ glamor_poly_segment_bail(drawable, gc, nseg, segs);
+ return TRUE;
+}
+