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EXA: Add exaCompositeRects()

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Add a function to composite multiple independent rectangles
from the same source to the same destination in a single
operation: this is useful for building a glyph mask.
This commit is contained in:
Owen Taylor 2008-04-28 21:00:54 +02:00 • committed by Michel Dänzer
commit 40eb14c948
3 changed files with 267 additions and 54 deletions
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83
exa/exa_glyphs.c
View file

@ -56,16 +56,6 @@
#define DBG_GLYPH_CACHE(a)
#endif
/* Instructions for rendering a single glyph */
typedef struct {
INT16 xSrc;
INT16 ySrc;
INT16 xDst;
INT16 yDst;
INT16 width;
INT16 height;
} ExaGlyphRenderRec, *ExaGlyphRenderPtr;
/* Width of the pixmaps we use for the caches; this should be less than
* max texture size of the driver; this may need to actually come from
* the driver.
@ -79,7 +69,7 @@ typedef struct {
typedef struct {
PicturePtr source;
ExaGlyphRenderRec glyphs[GLYPH_BUFFER_SIZE];
ExaCompositeRectRec rects[GLYPH_BUFFER_SIZE];
int count;
} ExaGlyphBuffer, *ExaGlyphBufferPtr;
@ -364,7 +354,7 @@ exaGlyphCacheBufferGlyph(ScreenPtr pScreen,
int xGlyph,
int yGlyph)
{
ExaGlyphRenderPtr glyphRec;
ExaCompositeRectPtr rect;
int pos;
if (buffer->source && buffer->source != cache->picture)
@ -407,7 +397,7 @@ exaGlyphCacheBufferGlyph(ScreenPtr pScreen,
y = (pos / cache->columns) * cache->glyphHeight;
for (i = 0; i < buffer->count; i++) {
if (buffer->glyphs[i].xSrc == x && buffer->glyphs[i].ySrc == y) {
if (buffer->rects[i].xSrc == x && buffer->rects[i].ySrc == y) {
DBG_GLYPH_CACHE((" must flush buffer\n"));
return ExaGlyphNeedFlush;
}
@ -439,13 +429,13 @@ exaGlyphCacheBufferGlyph(ScreenPtr pScreen,
buffer->source = cache->picture;
glyphRec = &buffer->glyphs[buffer->count];
glyphRec->xSrc = (pos % cache->columns) * cache->glyphWidth;
glyphRec->ySrc = (pos / cache->columns) * cache->glyphHeight;
glyphRec->xDst = xGlyph - pGlyph->info.x;
glyphRec->yDst = yGlyph - pGlyph->info.y;
glyphRec->width = pGlyph->info.width;
glyphRec->height = pGlyph->info.height;
rect = &buffer->rects[buffer->count];
rect->xSrc = (pos % cache->columns) * cache->glyphWidth;
rect->ySrc = (pos / cache->columns) * cache->glyphHeight;
rect->xDst = xGlyph - pGlyph->info.x;
rect->yDst = yGlyph - pGlyph->info.y;
rect->width = pGlyph->info.width;
rect->height = pGlyph->info.height;
buffer->count++;
@ -463,7 +453,7 @@ exaBufferGlyph(ScreenPtr pScreen,
unsigned int format = (GlyphPicture(pGlyph)[pScreen->myNum])->format;
int width = pGlyph->info.width;
int height = pGlyph->info.width;
ExaGlyphRenderPtr glyphRec;
ExaCompositeRectPtr rect;
PicturePtr source;
int i;
@ -497,13 +487,13 @@ exaBufferGlyph(ScreenPtr pScreen,
buffer->source = source;
glyphRec = &buffer->glyphs[buffer->count];
glyphRec->xSrc = 0;
glyphRec->ySrc = 0;
glyphRec->xDst = xGlyph - pGlyph->info.x;
glyphRec->yDst = yGlyph - pGlyph->info.y;
glyphRec->width = pGlyph->info.width;
glyphRec->height = pGlyph->info.height;
rect = &buffer->rects[buffer->count];
rect->xSrc = 0;
rect->ySrc = 0;
rect->xDst = xGlyph - pGlyph->info.x;
rect->yDst = yGlyph - pGlyph->info.y;
rect->width = pGlyph->info.width;
rect->height = pGlyph->info.height;
buffer->count++;
@ -514,23 +504,8 @@ static void
exaGlyphsToMask(PicturePtr pMask,
ExaGlyphBufferPtr buffer)
{
int i;
for (i = 0; i < buffer->count; i++) {
ExaGlyphRenderPtr glyphRec = &buffer->glyphs[i];
CompositePicture (PictOpAdd,
buffer->source,
None,
pMask,
glyphRec->xSrc,
glyphRec->ySrc,
0, 0,
glyphRec->xDst,
glyphRec->yDst,
glyphRec->width,
glyphRec->height);
}
exaCompositeRects(PictOpAdd, buffer->source, pMask,
buffer->count, buffer->rects);
buffer->count = 0;
buffer->source = NULL;
@ -549,20 +524,20 @@ exaGlyphsToDst(CARD8 op,
int i;
for (i = 0; i < buffer->count; i++) {
ExaGlyphRenderPtr glyphRec = &buffer->glyphs[i];
ExaCompositeRectPtr rect = &buffer->rects[i];
CompositePicture (op,
pSrc,
buffer->source,
pDst,
xSrc + glyphRec->xDst - xDst,
ySrc + glyphRec->yDst - yDst,
glyphRec->xSrc,
glyphRec->ySrc,
glyphRec->xDst,
glyphRec->yDst,
glyphRec->width,
glyphRec->height);
xSrc + rect->xDst - xDst,
ySrc + rect->yDst - yDst,
rect->xSrc,
rect->ySrc,
rect->xDst,
rect->yDst,
rect->width,
rect->height);
}
buffer->count = 0;