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Everyone needs to be able to split BPPs these days.

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This commit is contained in:
Camilla Berglund
2010-09-16 03:48:19 +02:00
parent df63d148e5
commit 3089e60fbd
5 changed files with 37 additions and 54 deletions
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src/win32/win32_fullscreen.c
+2 -26
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@@ -34,30 +34,6 @@
#include <limits.h>
//========================================================================
// Convert BPP to RGB bits based on "best guess"
//========================================================================
static void bpp2rgb(int bpp, int* r, int* g, int* b)
{
int delta;
// We assume that by 32 they really meant 24
if (bpp == 32)
bpp = 24;
// Convert "bits per pixel" to red, green & blue sizes
*r = *g = *b = bpp / 3;
delta = bpp - (*r * 3);
if (delta >= 1)
*g = *g + 1;
if (delta == 2)
*r = *r + 1;
}
//========================================================================
// Return closest video mode by dimensions, refresh rate and bits per pixel
//========================================================================
@@ -226,7 +202,7 @@ int _glfwPlatformGetVideoModes(GLFWvidmode* list, int maxcount)
if (success && dm.dmBitsPerPel >= 15)
{
// Convert to RGB, and back to bpp ("mask out" alpha bits etc)
bpp2rgb(dm.dmBitsPerPel, &r, &g, &b);
_glfwSplitBPP(dm.dmBitsPerPel, &r, &g, &b);
bpp = r + g + b;
// Mode "code" for this mode
@@ -289,6 +265,6 @@ void _glfwPlatformGetDesktopMode(GLFWvidmode* mode)
// Return desktop mode parameters
mode->width = dm.dmPelsWidth;
mode->height = dm.dmPelsHeight;
bpp2rgb(dm.dmBitsPerPel, &mode->redBits, &mode->greenBits, &mode->blueBits);
_glfwSplitBPP(dm.dmBitsPerPel, &mode->redBits, &mode->greenBits, &mode->blueBits);
}