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Bug fixes

This commit is contained in:
Magnus Norddahl 2016-06-10 14:25:56 +02:00
parent 05b6fe6174
commit 24f846f702
2 changed files with 23 additions and 4 deletions
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6
src/r_draw_rgba.cpp
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@ -1511,8 +1511,6 @@ public:
{
// 64x64 is the most common case by far, so special case it.
uint32_t *palette = (uint32_t*)GPalette.BaseColors;
int sse_count = count / 4;
count -= sse_count * 4;
@ -1545,7 +1543,7 @@ public:
// Lookup pixel from flat texture tile,
// re-index using light/colormap.
__m128i fg = _mm_set_epi32(palette[p3], palette[p2], palette[p1], palette[p0]);
__m128i fg = _mm_set_epi32(p3, p2, p1, p0);
SSE_SHADE_SIMPLE(fg);
_mm_storeu_si128((__m128i*)dest, fg);
@ -1582,7 +1580,7 @@ public:
// Lookup pixel from flat texture tile,
// re-index using light/colormap.
__m128i fg = _mm_set_epi32(palette[p3], palette[p2], palette[p1], palette[p0]);
__m128i fg = _mm_set_epi32(p3, p2, p1, p0);
SSE_SHADE(fg, shade_constants);
_mm_storeu_si128((__m128i*)dest, fg);

21
src/r_main.h
View File

@ -217,6 +217,27 @@ FORCEINLINE uint32_t shade_bgra(uint32_t color, uint32_t light, const ShadeConst
return 0xff000000 | (red << 16) | (green << 8) | blue;
}
FORCEINLINE uint32_t alpha_blend(uint32_t fg, uint32_t bg)
{
uint32_t fg_alpha = (fg >> 24) & 0xff;
uint32_t fg_red = (fg >> 16) & 0xff;
uint32_t fg_green = (fg >> 8) & 0xff;
uint32_t fg_blue = fg & 0xff;
uint32_t alpha = fg_alpha + (fg_alpha >> 7); // 255 -> 256
uint32_t inv_alpha = 256 - alpha;
uint32_t bg_red = (bg >> 16) & 0xff;
uint32_t bg_green = (bg >> 8) & 0xff;
uint32_t bg_blue = bg & 0xff;
uint32_t red = ((fg_red * alpha) + (bg_red * inv_alpha)) / 256;
uint32_t green = ((fg_green * alpha) + (bg_green * inv_alpha)) / 256;
uint32_t blue = ((fg_blue * alpha) + (bg_blue * inv_alpha)) / 256;
return 0xff000000 | (red << 16) | (green << 8) | blue;
}
// Calculate constants for a simple shade
#define SSE_SHADE_SIMPLE_INIT(light) \
__m128i mlight_hi = _mm_set_epi16(256, light, light, light, 256, light, light, light); \