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Perf adjustments for gfxGetFramebufferDisplayOffset().

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This commit is contained in:
yellows8 2017-12-30 02:13:04 -05:00
parent 4e77c36c30
commit a0ea8c53df
1 changed files with 7 additions and 11 deletions
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18
nx/include/switch/gfx/gfx.h
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@ -53,24 +53,20 @@ void gfxFlushBuffers(void);
/// Use this to get the pixel-offset in the framebuffer. Returned value is in pixels, not bytes.
/// This implements tegra blocklinear, with hard-coded constants etc.
static inline u32 gfxGetFramebufferDisplayOffset(u32 x, u32 y) {
u32 width, height;
u32 tilepos, tmp_pos;
u32 tmp_pos;
extern size_t g_gfx_framebuf_width;
extern size_t g_gfx_framebuf_display_height;
width = g_gfx_framebuf_width;
height = g_gfx_framebuf_display_height;
//if (x >= g_gfx_framebuf_width || y >= g_gfx_framebuf_display_height) return (gfxGetFramebufferSize()-4)/4;//Return the last pixel-offset in the buffer, the data located here is not displayed due to alignment. (Disabled for perf)
//if (x >= width || y >= height) return (gfxGetFramebufferSize()-4)/4;//Return the last pixel-offset in the buffer, the data located here is not displayed due to alignment. (Disabled for perf)
y = g_gfx_framebuf_display_height-1-y;
y = height-1-y;
tmp_pos = ((y & 127) / 16) + (x/16*8) + ((y/16/8)*(g_gfx_framebuf_width/16*8));
tmp_pos *= 16*16 * 4;
tilepos = ((y & 127) / 16) + (x/16*8) + ((y/16/8)*(width/16*8));
tilepos = tilepos*16*16 * 4;
tmp_pos += ((y%16)/8)*512 + ((x%16)/8)*256 + ((y%8)/2)*64 + ((x%8)/4)*32 + (y%2)*16 + (x%4)*4;//This line is a modified version of code from the Tegra X1 datasheet.
tmp_pos = ((y%16)/8)*512 + ((x%16)/8)*256 + ((y%8)/2)*64 + ((x%8)/4)*32 + (y%2)*16 + (x%4)*4;//This line is a modified version of code from the Tegra X1 datasheet.
return (tilepos + tmp_pos) / 4;
return tmp_pos / 4;
}