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/*
* 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,
.vs_vars = "attribute vec4 primitive;\n",
.vs_exec = (" vec2 pos = primitive.zw * 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;
pixmap_priv = glamor_get_pixmap_private(pixmap);
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv))
goto bail;
glamor_make_current(glamor_priv);
if (glamor_priv->glsl_version >= 130) {
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, 4, GL_SHORT, GL_FALSE,
4 * sizeof (short), vbo_offset);
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);
glamor_set_destination_drawable(drawable, box_index, TRUE, FALSE,
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++;
if (glamor_priv->glsl_version >= 130)
glDrawArraysInstanced(GL_TRIANGLE_STRIP, 0, 4, nrect);
else {
glamor_glDrawArrays_GL_QUADS(glamor_priv, nrect);
}
}
}
glDisable(GL_SCISSOR_TEST);
if (glamor_priv->glsl_version >= 130)
glVertexAttribDivisor(GLAMOR_VERTEX_POS, 0);
glDisableVertexAttribArray(GLAMOR_VERTEX_POS);
return TRUE;
bail:
return FALSE;
}
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);
}
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