378 lines
12 KiB
C
378 lines
12 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_transform.h"
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#include "glamor_transfer.h"
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glamor_program fill_spans_progs[4];
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static const glamor_facet glamor_facet_fillspans_130 = {
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.name = "fill_spans",
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.version = 130,
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.vs_vars = "in vec3 primitive;\n",
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.vs_exec = (" vec2 pos = vec2(primitive.z,1) * 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_fillspans_120 = {
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.name = "fill_spans",
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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_fill_spans_gl(DrawablePtr drawable,
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GCPtr gc,
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int n, DDXPointPtr points, int *widths, int sorted)
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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 c;
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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 (glamor_glsl_has_ints(glamor_priv)) {
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prog = glamor_use_program_fill(drawable, gc, &glamor_priv->fill_spans_program,
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&glamor_facet_fillspans_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, n * (4 * sizeof (GLshort)), &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, 3, GL_SHORT, GL_FALSE,
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4 * sizeof (GLshort), vbo_offset);
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for (c = 0; c < n; c++) {
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v[0] = points->x;
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v[1] = points->y;
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v[2] = *widths++;
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points++;
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v += 4;
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}
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glamor_put_vbo_space(screen);
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} else {
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prog = glamor_use_program_fill(drawable, gc, &glamor_priv->fill_spans_program,
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&glamor_facet_fillspans_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, n * 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 (c = 0; c < n; c++) {
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v[0] = points->x; v[1] = points->y;
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v[2] = points->x; v[3] = points->y + 1;
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v[4] = points->x + *widths; v[5] = points->y + 1;
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v[6] = points->x + *widths; v[7] = points->y;
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widths++;
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points++;
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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, FALSE, 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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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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if (glamor_glsl_has_ints(glamor_priv))
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glDrawArraysInstanced(GL_TRIANGLE_STRIP, 0, 4, n);
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else {
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glamor_glDrawArrays_GL_QUADS(glamor_priv, n);
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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_POS, 0);
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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_fill_spans_bail(DrawablePtr drawable,
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GCPtr gc,
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int n, DDXPointPtr points, int *widths, int sorted)
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{
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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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fbFillSpans(drawable, gc, n, points, widths, sorted);
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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_fill_spans(DrawablePtr drawable,
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GCPtr gc,
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int n, DDXPointPtr points, int *widths, int sorted)
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{
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if (glamor_fill_spans_gl(drawable, gc, n, points, widths, sorted))
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return;
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glamor_fill_spans_bail(drawable, gc, n, points, widths, sorted);
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}
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static Bool
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glamor_get_spans_gl(DrawablePtr drawable, int wmax,
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DDXPointPtr points, int *widths, int count, char *dst)
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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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int box_index;
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int n;
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char *d;
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int off_x, off_y;
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const struct glamor_format *f = glamor_format_for_pixmap(pixmap);
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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_get_drawable_deltas(drawable, pixmap, &off_x, &off_y);
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glamor_make_current(glamor_priv);
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glamor_pixmap_loop(pixmap_priv, box_index) {
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BoxPtr box = glamor_pixmap_box_at(pixmap_priv, box_index);
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glamor_pixmap_fbo *fbo = glamor_pixmap_fbo_at(pixmap_priv, box_index);
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glBindFramebuffer(GL_FRAMEBUFFER, fbo->fb);
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glPixelStorei(GL_PACK_ALIGNMENT, 4);
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d = dst;
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for (n = 0; n < count; n++) {
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int x1 = points[n].x + off_x;
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int y = points[n].y + off_y;
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int w = widths[n];
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int x2 = x1 + w;
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char *l;
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l = d;
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d += PixmapBytePad(w, drawable->depth);
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/* clip */
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if (x1 < box->x1) {
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l += (box->x1 - x1) * (drawable->bitsPerPixel >> 3);
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x1 = box->x1;
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}
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if (x2 > box->x2)
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x2 = box->x2;
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if (x1 >= x2)
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continue;
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if (y < box->y1)
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continue;
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if (y >= box->y2)
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continue;
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glReadPixels(x1 - box->x1, y - box->y1, x2 - x1, 1,
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f->format, f->type, l);
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}
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}
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return TRUE;
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bail:
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return FALSE;
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}
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static void
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glamor_get_spans_bail(DrawablePtr drawable, int wmax,
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DDXPointPtr points, int *widths, int count, char *dst)
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{
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if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RO))
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fbGetSpans(drawable, wmax, points, widths, count, dst);
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glamor_finish_access(drawable);
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}
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void
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glamor_get_spans(DrawablePtr drawable, int wmax,
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DDXPointPtr points, int *widths, int count, char *dst)
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{
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if (glamor_get_spans_gl(drawable, wmax, points, widths, count, dst))
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return;
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glamor_get_spans_bail(drawable, wmax, points, widths, count, dst);
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}
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static Bool
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glamor_set_spans_gl(DrawablePtr drawable, GCPtr gc, char *src,
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DDXPointPtr points, int *widths, int numPoints, int sorted)
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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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const struct glamor_format *f = glamor_format_for_pixmap(pixmap);
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int box_index;
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int n;
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char *s;
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int off_x, off_y;
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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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if (gc->alu != GXcopy)
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goto bail;
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if (!glamor_pm_is_solid(gc->depth, gc->planemask))
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goto bail;
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glamor_get_drawable_deltas(drawable, pixmap, &off_x, &off_y);
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glamor_make_current(glamor_priv);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
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glamor_pixmap_loop(pixmap_priv, box_index) {
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BoxPtr box = glamor_pixmap_box_at(pixmap_priv, box_index);
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glamor_pixmap_fbo *fbo = glamor_pixmap_fbo_at(pixmap_priv, box_index);
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glamor_bind_texture(glamor_priv, GL_TEXTURE0, fbo, TRUE);
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s = src;
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for (n = 0; n < numPoints; n++) {
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BoxPtr clip_box = RegionRects(gc->pCompositeClip);
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int nclip_box = RegionNumRects(gc->pCompositeClip);
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int w = widths[n];
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int y = points[n].y;
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int x = points[n].x;
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while (nclip_box--) {
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int x1 = x;
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int x2 = x + w;
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int y1 = y;
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char *l = s;
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/* clip to composite clip */
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if (x1 < clip_box->x1) {
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l += (clip_box->x1 - x1) * (drawable->bitsPerPixel >> 3);
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x1 = clip_box->x1;
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}
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if (x2 > clip_box->x2)
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x2 = clip_box->x2;
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if (y < clip_box->y1)
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continue;
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if (y >= clip_box->y2)
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continue;
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/* adjust to pixmap coordinates */
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x1 += off_x;
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x2 += off_x;
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y1 += off_y;
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if (x1 < box->x1) {
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l += (box->x1 - x1) * (drawable->bitsPerPixel >> 3);
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x1 = box->x1;
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}
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if (x2 > box->x2)
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x2 = box->x2;
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if (x1 >= x2)
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continue;
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if (y1 < box->y1)
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continue;
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if (y1 >= box->y2)
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continue;
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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x1 - box->x1, y1 - box->y1, x2 - x1, 1,
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f->format, f->type,
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l);
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}
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s += PixmapBytePad(w, drawable->depth);
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}
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}
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return TRUE;
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bail:
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return FALSE;
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}
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static void
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glamor_set_spans_bail(DrawablePtr drawable, GCPtr gc, char *src,
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DDXPointPtr points, int *widths, int numPoints, int sorted)
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{
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if (glamor_prepare_access(drawable, GLAMOR_ACCESS_RW) && glamor_prepare_access_gc(gc))
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fbSetSpans(drawable, gc, src, points, widths, numPoints, sorted);
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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_set_spans(DrawablePtr drawable, GCPtr gc, char *src,
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DDXPointPtr points, int *widths, int numPoints, int sorted)
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{
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if (glamor_set_spans_gl(drawable, gc, src, points, widths, numPoints, sorted))
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return;
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glamor_set_spans_bail(drawable, gc, src, points, widths, numPoints, sorted);
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}
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