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[host] Numerous performance improvements and minor bug fixes

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This commit is contained in:
Geoffrey McRae
2017-12-05 20:39:54 +11:00
parent c1a82e853d
commit 0b290d83d3
8 changed files with 156 additions and 72 deletions
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73
host/Util.h
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@@ -24,6 +24,15 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "common\debug.h"
enum CursorType
{
CURSOR_TYPE_COLOR,
CURSOR_TYPE_MONOCHROME,
CURSOR_TYPE_MASKED_COLOR,
CURSOR_TYPE_PACKED_MONOCHROME,
CURSOR_TYPE_PACKED_MASKED_COLOR
};
class Util
{
public:
@@ -103,4 +112,68 @@ public:
_mm_stream_si128((__m128i *)&dest[32], v2);
}
}
static void DrawCursor(
const enum CursorType type,
const uint8_t * cursorData,
const POINT cursorRect,
const unsigned int cursorPitch,
const POINT cursorPos,
FrameInfo & frame
)
{
const int maxHeight = min(cursorRect.y, (int)frame.height - cursorPos.y);
const int maxWidth = min(cursorRect.x, (int)frame.width - cursorPos.x);
switch (type)
{
case CURSOR_TYPE_COLOR:
{
const unsigned int destPitch = frame.stride * 4;
for (int y = abs(min(0, cursorPos.y)); y < maxHeight; ++y)
for (int x = abs(min(0, cursorPos.x)); x < maxWidth; ++x)
{
uint8_t *src = (uint8_t *)cursorData + (cursorPitch * y) + (x * 4);
uint8_t *dst = (uint8_t *)frame.buffer + (destPitch * (y + cursorPos.y)) + ((x + cursorPos.x) * 4);
const unsigned int alpha = src[3] + 1;
const unsigned int inv = 256 - alpha;
dst[0] = (uint8_t)((alpha * src[0] + inv * dst[0]) >> 8);
dst[1] = (uint8_t)((alpha * src[1] + inv * dst[1]) >> 8);
dst[2] = (uint8_t)((alpha * src[2] + inv * dst[2]) >> 8);
}
break;
}
case CURSOR_TYPE_MASKED_COLOR:
{
for (int y = abs(min(0, cursorPos.y)); y < maxHeight; ++y)
for (int x = abs(min(0, cursorPos.x)); x < maxWidth; ++x)
{
uint32_t *src = (uint32_t *)cursorData + ((cursorPitch / 4) * y) + x;
uint32_t *dst = (uint32_t *)frame.buffer + (frame.stride * (y + cursorPos.y)) + (x + cursorPos.x);
if (*src & 0xff000000)
*dst = 0xff000000 | (*dst ^ *src);
else *dst = 0xff000000 | *src;
}
break;
}
case CURSOR_TYPE_MONOCHROME:
{
for (int y = abs(min(0, cursorPos.y)); y < maxHeight / 2; ++y)
for (int x = abs(min(0, cursorPos.x)); x < maxWidth; ++x)
{
uint8_t *srcAnd = (uint8_t *)cursorData + (cursorPitch * y) + (x / 8);
uint8_t *srcXor = srcAnd + cursorPitch * (cursorRect.y / 2);
uint32_t *dst = (uint32_t *)frame.buffer + (frame.stride * (y + cursorPos.y)) + (x + cursorPos.x);
const uint8_t mask = 0x80 >> (x % 8);
const uint32_t andMask = (*srcAnd & mask) ? 0xFFFFFFFF : 0xFF000000;
const uint32_t xorMask = (*srcXor & mask) ? 0x00FFFFFF : 0x00000000;
*dst = (*dst & andMask) ^ xorMask;
}
break;
}
}
}
};