198 lines
7.0 KiB
C
198 lines
7.0 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 "glamor_priv.h"
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#include "glamor_program.h"
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#include "glamor_transform.h"
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static const glamor_facet glamor_facet_polyfillrect_130 = {
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.name = "poly_fill_rect",
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.version = 130,
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.source_name = "size",
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.vs_vars = "in vec2 primitive;\n"
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"in vec2 size;\n",
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.vs_exec = (" vec2 pos = size * vec2(gl_VertexID&1, (gl_VertexID&2)>>1);\n"
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GLAMOR_POS(gl_Position, (primitive.xy + pos))),
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};
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static const glamor_facet glamor_facet_polyfillrect_120 = {
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.name = "poly_fill_rect",
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.vs_vars = "attribute vec2 primitive;\n",
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.vs_exec = (" vec2 pos = vec2(0,0);\n"
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GLAMOR_POS(gl_Position, primitive.xy)),
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};
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static Bool
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glamor_poly_fill_rect_gl(DrawablePtr drawable,
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GCPtr gc, int nrect, xRectangle *prect)
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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_pixmap_private *pixmap_priv;
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glamor_program *prog;
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int off_x, off_y;
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GLshort *v;
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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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BoxRec bounds = glamor_no_rendering_bounds();
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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 (nrect < 100) {
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bounds = glamor_start_rendering_bounds();
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for (int i = 0; i < nrect; i++)
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glamor_bounds_union_rect(&bounds, &prect[i]);
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}
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if (glamor_glsl_has_ints(glamor_priv)) {
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prog = glamor_use_program_fill(drawable, gc,
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&glamor_priv->poly_fill_rect_program,
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&glamor_facet_polyfillrect_130);
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if (!prog)
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goto bail;
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/* Set up the vertex buffers for the points */
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v = glamor_get_vbo_space(drawable->pScreen, nrect * sizeof (xRectangle), &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, 2, GL_SHORT, GL_FALSE,
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4 * sizeof (short), 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_UNSIGNED_SHORT, GL_FALSE,
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4 * sizeof (short), vbo_offset + 2 * sizeof (short));
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memcpy(v, prect, nrect * sizeof (xRectangle));
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glamor_put_vbo_space(screen);
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} else {
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int n;
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prog = glamor_use_program_fill(drawable, gc,
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&glamor_priv->poly_fill_rect_program,
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&glamor_facet_polyfillrect_120);
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if (!prog)
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goto bail;
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/* Set up the vertex buffers for the points */
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v = glamor_get_vbo_space(drawable->pScreen, nrect * 8 * sizeof (short), &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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2 * sizeof (short), vbo_offset);
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for (n = 0; n < nrect; n++) {
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v[0] = prect->x; v[1] = prect->y;
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v[2] = prect->x; v[3] = prect->y + prect->height;
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v[4] = prect->x + prect->width; v[5] = prect->y + prect->height;
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v[6] = prect->x + prect->width; v[7] = prect->y;
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prect++;
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v += 8;
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}
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glamor_put_vbo_space(screen);
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}
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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, FALSE,
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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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BoxRec scissor = {
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.x1 = max(box->x1, bounds.x1 + drawable->x),
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.y1 = max(box->y1, bounds.y1 + drawable->y),
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.x2 = min(box->x2, bounds.x2 + drawable->x),
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.y2 = min(box->y2, bounds.y2 + drawable->y),
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};
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box++;
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if (scissor.x1 >= scissor.x2 || scissor.y1 >= scissor.y2)
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continue;
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glScissor(scissor.x1 + off_x,
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scissor.y1 + off_y,
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scissor.x2 - scissor.x1,
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scissor.y2 - scissor.y1);
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if (glamor_glsl_has_ints(glamor_priv))
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glDrawArraysInstanced(GL_TRIANGLE_STRIP, 0, 4, nrect);
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else {
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glamor_glDrawArrays_GL_QUADS(glamor_priv, nrect);
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}
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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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if (glamor_glsl_has_ints(glamor_priv)) {
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glVertexAttribDivisor(GLAMOR_VERTEX_SOURCE, 0);
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glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE);
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glVertexAttribDivisor(GLAMOR_VERTEX_POS, 0);
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}
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glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
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return ret;
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}
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static void
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glamor_poly_fill_rect_bail(DrawablePtr drawable,
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GCPtr gc, int nrect, xRectangle *prect)
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{
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glamor_fallback("to %p (%c)\n", drawable,
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glamor_get_drawable_location(drawable));
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if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RW) &&
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glamor_prepare_access_gc(gc)) {
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fbPolyFillRect(drawable, gc, nrect, prect);
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}
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glamor_finish_access_gc(gc);
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glamor_finish_access(drawable);
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}
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void
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glamor_poly_fill_rect(DrawablePtr drawable,
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GCPtr gc, int nrect, xRectangle *prect)
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{
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if (glamor_poly_fill_rect_gl(drawable, gc, nrect, prect))
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return;
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glamor_poly_fill_rect_bail(drawable, gc, nrect, prect);
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}
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