Edit
IABSD.fr/xenocara/xserver/glamor/glamor_rects.c
matthieu
- xserver/glamor/glamor_rects.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 "glamor_priv.h" #include "glamor_program.h" #include "glamor_transform.h" static const glamor_facet glamor_facet_polyfillrect_130 = { .name = "poly_fill_rect", .version = 130, .source_name = "size", .vs_vars = "attribute vec2 primitive;\n" "attribute vec2 size;\n", .vs_exec = (" vec2 pos = size * vec2(gl_VertexID&1, (gl_VertexID&2)>>1);\n" GLAMOR_POS(gl_Position, (primitive.xy + pos))), }; static const glamor_facet glamor_facet_polyfillrect_120 = { .name = "poly_fill_rect", .vs_vars = "attribute vec2 primitive;\n", .vs_exec = (" vec2 pos = vec2(0,0);\n" GLAMOR_POS(gl_Position, primitive.xy)), }; static Bool glamor_poly_fill_rect_gl(DrawablePtr drawable, GCPtr gc, int nrect, xRectangle *prect) { 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; GLshort *v; char *vbo_offset; int box_index; Bool ret = FALSE; BoxRec bounds = glamor_no_rendering_bounds(); pixmap_priv = glamor_get_pixmap_private(pixmap); if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv)) goto bail; glamor_make_current(glamor_priv); if (nrect < 100) { bounds = glamor_start_rendering_bounds(); for (int i = 0; i < nrect; i++) glamor_bounds_union_rect(&bounds, &prect[i]); } if (glamor_glsl_has_ints(glamor_priv)) { prog = glamor_use_program_fill(pixmap, gc, &glamor_priv->poly_fill_rect_program, &glamor_facet_polyfillrect_130); if (!prog) goto bail; /* Set up the vertex buffers for the points */ v = glamor_get_vbo_space(drawable->pScreen, nrect * sizeof (xRectangle), &vbo_offset); glEnableVertexAttribArray(GLAMOR_VERTEX_POS); glVertexAttribDivisor(GLAMOR_VERTEX_POS, 1); glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_SHORT, GL_FALSE, 4 * sizeof (short), vbo_offset); glEnableVertexAttribArray(GLAMOR_VERTEX_SOURCE); glVertexAttribDivisor(GLAMOR_VERTEX_SOURCE, 1); glVertexAttribPointer(GLAMOR_VERTEX_SOURCE, 2, GL_UNSIGNED_SHORT, GL_FALSE, 4 * sizeof (short), vbo_offset + 2 * sizeof (short)); memcpy(v, prect, nrect * sizeof (xRectangle)); glamor_put_vbo_space(screen); } else { int n; prog = glamor_use_program_fill(pixmap, gc, &glamor_priv->poly_fill_rect_program, &glamor_facet_polyfillrect_120); if (!prog) goto bail; /* Set up the vertex buffers for the points */ v = glamor_get_vbo_space(drawable->pScreen, nrect * 8 * sizeof (short), &vbo_offset); glEnableVertexAttribArray(GLAMOR_VERTEX_POS); glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_SHORT, GL_FALSE, 2 * sizeof (short), vbo_offset); for (n = 0; n < nrect; n++) { v[0] = prect->x; v[1] = prect->y; v[2] = prect->x; v[3] = prect->y + prect->height; v[4] = prect->x + prect->width; v[5] = prect->y + prect->height; v[6] = prect->x + prect->width; v[7] = prect->y; prect++; v += 8; } glamor_put_vbo_space(screen); } glEnable(GL_SCISSOR_TEST); glamor_pixmap_loop(pixmap_priv, box_index) { int nbox = RegionNumRects(gc->pCompositeClip); BoxPtr box = RegionRects(gc->pCompositeClip); if (!glamor_set_destination_drawable(drawable, box_index, TRUE, FALSE, prog->matrix_uniform, &off_x, &off_y)) goto bail; while (nbox--) { BoxRec scissor = { .x1 = max(box->x1, bounds.x1 + drawable->x), .y1 = max(box->y1, bounds.y1 + drawable->y), .x2 = min(box->x2, bounds.x2 + drawable->x), .y2 = min(box->y2, bounds.y2 + drawable->y), }; box++; if (scissor.x1 >= scissor.x2 || scissor.y1 >= scissor.y2) continue; glScissor(scissor.x1 + off_x, scissor.y1 + off_y, scissor.x2 - scissor.x1, scissor.y2 - scissor.y1); if (glamor_glsl_has_ints(glamor_priv)) glDrawArraysInstanced(GL_TRIANGLE_STRIP, 0, 4, nrect); else { glamor_glDrawArrays_GL_QUADS(glamor_priv, nrect); } } } ret = TRUE; bail: glDisable(GL_SCISSOR_TEST); if (glamor_glsl_has_ints(glamor_priv)) { glVertexAttribDivisor(GLAMOR_VERTEX_SOURCE, 0); glDisableVertexAttribArray(GLAMOR_VERTEX_SOURCE); glVertexAttribDivisor(GLAMOR_VERTEX_POS, 0); } glDisableVertexAttribArray(GLAMOR_VERTEX_POS); return ret; } static void glamor_poly_fill_rect_bail(DrawablePtr drawable, GCPtr gc, int nrect, xRectangle *prect) { glamor_fallback("to %p (%c)\n", drawable, glamor_get_drawable_location(drawable)); if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RW) && glamor_prepare_access_gc(gc)) { fbPolyFillRect(drawable, gc, nrect, prect); } glamor_finish_access_gc(gc); glamor_finish_access(drawable); } void glamor_poly_fill_rect(DrawablePtr drawable, GCPtr gc, int nrect, xRectangle *prect) { if (glamor_poly_fill_rect_gl(drawable, gc, nrect, prect)) return; glamor_poly_fill_rect_bail(drawable, gc, nrect, prect); }