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/*
* Copyright (C) 2012 Russell King.
*
* Based in part on code from the Intel Xorg driver.
*
* Unaccelerated drawing functions for Vivante GPU. These prepare
* access to the drawable prior to passing on the call to the Xorg
* Server's fb layer (or pixman layer.)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "fb.h"
#include "fbpict.h"
#include "mipict.h"
#include "vivante_unaccel.h"
#include "vivante_utils.h"
static void vivante_prepare_picture(PicturePtr pPicture, int access)
{
if (pPicture->pDrawable) {
vivante_prepare_drawable(pPicture->pDrawable, access);
if (pPicture->alphaMap)
vivante_prepare_drawable(pPicture->alphaMap->pDrawable, access);
}
}
static void vivante_finish_picture(PicturePtr pPicture, int access)
{
if (pPicture->pDrawable) {
if (pPicture->alphaMap)
vivante_finish_drawable(pPicture->alphaMap->pDrawable, access);
vivante_finish_drawable(pPicture->pDrawable, access);
}
}
static void GlyphExtents(int nlist, GlyphListPtr list, GlyphPtr *glyphs,
BoxPtr extents)
{
int x1, y1, x2, y2, n, x, y;
GlyphPtr glyph;
x = y = 0;
extents->x1 = extents->y1 = MAXSHORT;
extents->x2 = extents->y2 = MINSHORT;
while (nlist--) {
x += list->xOff;
y += list->yOff;
n = list->len;
list++;
while (n--) {
glyph = *glyphs++;
x1 = x - glyph->info.x;
if (x1 < MINSHORT)
x1 = MINSHORT;
y1 = y - glyph->info.y;
if (y1 < MINSHORT)
y1 = MINSHORT;
x2 = x1 + glyph->info.width;
if (x2 > MAXSHORT)
x2 = MAXSHORT;
y2 = y1 + glyph->info.height;
if (y2 > MAXSHORT)
y2 = MAXSHORT;
if (x1 < extents->x1)
extents->x1 = x1;
if (x2 > extents->x2)
extents->x2 = x2;
if (y1 < extents->y1)
extents->y1 = y1;
if (y2 > extents->y2)
extents->y2 = y2;
x += glyph->info.xOff;
y += glyph->info.yOff;
}
}
}
#define NeedsComponent(f) (PICT_FORMAT_A(f) != 0 && PICT_FORMAT_RGB(f) != 0)
#ifndef GLYPH_HAS_GLYPH_PICTURE_ACCESSOR
#define GetGlyphPicture(g, s) GlyphPicture((g))[(s)->myNum]
#define SetGlyphPicture(g, s, p) GlyphPicture((g))[(s)->myNum] = p
#endif
void vivante_unaccel_Glyphs(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc, int nlist,
GlyphListPtr list, GlyphPtr * glyphs)
{
ScreenPtr pScreen = pDst->pDrawable->pScreen;
PixmapPtr pMaskPixmap = NULL;
PicturePtr pMask;
int width = 0, height = 0, x, y, n;
int xDst = list->xOff, yDst = list->yOff;
BoxRec extents = { 0, 0, 0, 0 };
if (maskFormat) {
xRectangle rect;
CARD32 component_alpha;
GCPtr pGC;
int error;
GlyphExtents(nlist, list, glyphs, &extents);
if (extents.x2 <= extents.x1 || extents.y2 <= extents.y1)
return;
width = extents.x2 - extents.x1;
height = extents.y2 - extents.y1;
pMaskPixmap = pScreen->CreatePixmap(pScreen, width, height,
maskFormat->depth,
CREATE_PIXMAP_USAGE_SCRATCH);
if (!pMaskPixmap)
return;
component_alpha = NeedsComponent(maskFormat->format);
pMask = CreatePicture(0, &pMaskPixmap->drawable, maskFormat,
CPComponentAlpha, &component_alpha, serverClient, &error);
if (!pMask) {
pScreen->DestroyPixmap(pMaskPixmap);
return;
}
pGC = GetScratchGC(pMaskPixmap->drawable.depth, pScreen);
ValidateGC(&pMaskPixmap->drawable, pGC);
rect.x = 0;
rect.y = 0;
rect.width = width;
rect.height = height;
pGC->ops->PolyFillRect(&pMaskPixmap->drawable, pGC, 1, &rect);
FreeScratchGC(pGC);
x = -extents.x1;
y = -extents.y1;
} else {
pMask = pDst;
x = 0;
y = 0;
}
while (nlist--) {
x += list->xOff;
y += list->yOff;
n = list->len;
while (n--) {
GlyphPtr glyph = *glyphs++;
PicturePtr g = GetGlyphPicture(glyph, pScreen);
if (g) {
int dstx = x - glyph->info.x;
int dsty = y - glyph->info.y;
if (maskFormat) {
CompositePicture(PictOpAdd, g, NULL, pMask,
0, 0, 0, 0, dstx, dsty,
glyph->info.width, glyph->info.height);
} else {
CompositePicture(op, pSrc, g, pDst,
xSrc + dstx - xDst,
ySrc + dsty - yDst,
0, 0, dstx, dsty,
glyph->info.width, glyph->info.height);
}
}
x += glyph->info.xOff;
y += glyph->info.yOff;
}
list++;
}
if (maskFormat) {
x = extents.x1;
y = extents.y1;
CompositePicture(op, pSrc, pMask, pDst,
xSrc + x - xDst, ySrc + y - yDst, 0, 0, x, y,
width, height);
FreePicture(pMask, 0);
pScreen->DestroyPixmap(pMaskPixmap);
}
}
void vivante_unaccel_Triangles(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc, int ntri, xTriangle *tri)
{
vivante_prepare_picture(pDst, ACCESS_RW);
vivante_prepare_picture(pSrc, ACCESS_RO);
fbTriangles(op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tri);
vivante_finish_picture(pSrc, ACCESS_RO);
vivante_finish_picture(pDst, ACCESS_RW);
}
void vivante_unaccel_Trapezoids(CARD8 op, PicturePtr pSrc, PicturePtr pDst,
PictFormatPtr maskFormat, INT16 xSrc, INT16 ySrc, int ntrap,
xTrapezoid * traps)
{
vivante_prepare_picture(pDst, ACCESS_RW);
vivante_prepare_picture(pSrc, ACCESS_RO);
fbTrapezoids(op, pSrc, pDst, maskFormat, xSrc, ySrc, ntrap, traps);
vivante_finish_picture(pSrc, ACCESS_RO);
vivante_finish_picture(pDst, ACCESS_RW);
}
void vivante_unaccel_Composite(CARD8 op, PicturePtr pSrc, PicturePtr pMask,
PicturePtr pDst, INT16 xSrc, INT16 ySrc, INT16 xMask, INT16 yMask,
INT16 xDst, INT16 yDst, CARD16 w, CARD16 h)
{
vivante_prepare_picture(pDst, ACCESS_RW);
vivante_prepare_picture(pSrc, ACCESS_RO);
if (pMask)
vivante_prepare_picture(pMask, ACCESS_RO);
fbComposite(op, pSrc, pMask, pDst, xSrc, ySrc, xMask, yMask,
xDst, yDst, w, h);
if (pMask)
vivante_finish_picture(pMask, ACCESS_RO);
vivante_finish_picture(pSrc, ACCESS_RO);
vivante_finish_picture(pDst, ACCESS_RW);
}
void vivante_unaccel_AddTriangles(PicturePtr pPicture, INT16 x_off, INT16 y_off,
int ntri, xTriangle *tris)
{
vivante_prepare_picture(pPicture, ACCESS_RW);
fbAddTriangles(pPicture, x_off, y_off, ntri, tris);
vivante_finish_picture(pPicture, ACCESS_RW);
}
void vivante_unaccel_AddTraps(PicturePtr pPicture, INT16 x_off, INT16 y_off,
int ntrap, xTrap *traps)
{
vivante_prepare_picture(pPicture, ACCESS_RW);
fbAddTraps(pPicture, x_off, y_off, ntrap, traps);
vivante_finish_picture(pPicture, ACCESS_RW);
}
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