125 lines
4.0 KiB
C
125 lines
4.0 KiB
C
/*
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* Copyright © 2009 Intel Corporation
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* Copyright © 1998 Keith Packard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* Authors:
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* Zhigang Gong <zhigang.gong@linux.intel.com>
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*
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*/
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#include "glamor_priv.h"
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#include "glamor_transform.h"
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static const glamor_facet glamor_facet_point = {
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.name = "poly_point",
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.vs_vars = "attribute vec2 primitive;\n",
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.vs_exec = GLAMOR_POS(gl_Position, primitive),
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};
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static Bool
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glamor_poly_point_gl(DrawablePtr drawable, GCPtr gc, int mode, int npt, DDXPointPtr ppt)
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{
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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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PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
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glamor_program *prog = &glamor_priv->point_prog;
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glamor_pixmap_private *pixmap_priv;
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int off_x, off_y;
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GLshort *vbo_ppt;
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char *vbo_offset;
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int box_index;
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Bool ret = FALSE;
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pixmap_priv = glamor_get_pixmap_private(pixmap);
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if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
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goto bail;
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glamor_make_current(glamor_priv);
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if (prog->failed)
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goto bail;
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if (!prog->prog) {
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if (!glamor_build_program(screen, prog,
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&glamor_facet_point,
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&glamor_fill_solid,
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NULL, NULL))
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goto bail;
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}
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if (!glamor_use_program(pixmap, gc, prog, NULL))
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goto bail;
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vbo_ppt = glamor_get_vbo_space(screen, npt * (2 * sizeof (INT16)), &vbo_offset);
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glEnableVertexAttribArray(GLAMOR_VERTEX_POS);
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glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_SHORT, GL_FALSE, 0, vbo_offset);
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if (mode == CoordModePrevious) {
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int n = npt;
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INT16 x = 0, y = 0;
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while (n--) {
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vbo_ppt[0] = (x += ppt->x);
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vbo_ppt[1] = (y += ppt->y);
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vbo_ppt += 2;
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ppt++;
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}
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} else
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memcpy(vbo_ppt, ppt, npt * (2 * sizeof (INT16)));
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glamor_put_vbo_space(screen);
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glEnable(GL_SCISSOR_TEST);
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glamor_pixmap_loop(pixmap_priv, box_index) {
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int nbox = RegionNumRects(gc->pCompositeClip);
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BoxPtr box = RegionRects(gc->pCompositeClip);
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if (!glamor_set_destination_drawable(drawable, box_index, TRUE, TRUE,
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prog->matrix_uniform, &off_x, &off_y))
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goto bail;
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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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glDrawArrays(GL_POINTS, 0, npt);
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}
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}
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ret = TRUE;
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bail:
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glDisable(GL_SCISSOR_TEST);
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glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
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return ret;
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}
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void
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glamor_poly_point(DrawablePtr drawable, GCPtr gc, int mode, int npt,
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DDXPointPtr ppt)
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{
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if (glamor_poly_point_gl(drawable, gc, mode, npt, ppt))
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return;
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miPolyPoint(drawable, gc, mode, npt, ppt);
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}
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