/** @file
Example program using BltLib
Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <Library/BltLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiApplicationEntryPoint.h>
#include <Library/UefiBootServicesTableLib.h>
UINT64
ReadTimestamp (
VOID
)
{
#if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
return AsmReadTsc ();
#elif defined (MDE_CPU_IPF)
return AsmReadItc ();
#else
#error ReadTimestamp not supported for this architecture!
#endif
}
UINT32
Rand32 (
VOID
)
{
UINTN Found;
INTN Bits;
UINT64 Tsc1;
UINT64 Tsc2;
UINT64 TscBits;
UINT32 R32;
R32 = 0;
Found = 0;
Tsc1 = ReadTimestamp ();
Tsc2 = ReadTimestamp ();
do {
Tsc2 = ReadTimestamp ();
TscBits = Tsc2 ^ Tsc1;
Bits = HighBitSet64 (TscBits);
if (Bits > 0) {
Bits = Bits - 1;
}
R32 = (UINT32)((R32 << Bits) |
RShiftU64 (LShiftU64 (TscBits, (UINTN) (64 - Bits)), (UINTN) (64 - Bits)));
Found = Found + Bits;
} while (Found < 32);
return R32;
}
VOID
TestFills (
VOID
)
{
EFI_GRAPHICS_OUTPUT_BLT_PIXEL Color;
UINTN Loop;
UINTN X;
UINTN Y;
UINTN W;
UINTN H;
UINTN Width;
UINTN Height;
BltLibGetSizes (&Width, &Height);
for (Loop = 0; Loop < 10000; Loop++) {
W = Width - (Rand32 () % Width);
H = Height - (Rand32 () % Height);
if (W != Width) {
X = Rand32 () % (Width - W);
} else {
X = 0;
}
if (H != Height) {
Y = Rand32 () % (Height - H);
} else {
Y = 0;
}
*(UINT32*) (&Color) = Rand32 () & 0xffffff;
BltLibVideoFill (&Color, X, Y, W, H);
}
}
VOID
TestColor1 (
VOID
)
{
EFI_GRAPHICS_OUTPUT_BLT_PIXEL Color;
UINTN X;
UINTN Y;
UINTN Width;
UINTN Height;
BltLibGetSizes (&Width, &Height);
*(UINT32*) (&Color) = 0;
for (Y = 0; Y < Height; Y++) {
for (X = 0; X < Width; X++) {
Color.Red = (UINT8) ((X * 0x100) / Width);
Color.Green = (UINT8) ((Y * 0x100) / Height);
Color.Blue = (UINT8) ((Y * 0x100) / Height);
BltLibVideoFill (&Color, X, Y, 1, 1);
}
}
}
UINT32
Uint32SqRt (
IN UINT32 Uint32
)
{
UINT32 Mask;
UINT32 SqRt;
UINT32 SqRtMask;
UINT32 Squared;
if (Uint32 == 0) {
return 0;
}
for (SqRt = 0, Mask = (UINT32) (1 << (HighBitSet32 (Uint32) / 2));
Mask != 0;
Mask = Mask >> 1
) {
SqRtMask = SqRt | Mask;
//DEBUG ((EFI_D_INFO, "Uint32=0x%x SqRtMask=0x%x\n", Uint32, SqRtMask));
Squared = (UINT32) (SqRtMask * SqRtMask);
if (Squared > Uint32) {
continue;
} else if (Squared < Uint32) {
SqRt = SqRtMask;
} else {
return SqRtMask;
}
}
return SqRt;
}
UINT32
Uint32Dist (
IN UINTN X,
IN UINTN Y
)
{
return Uint32SqRt ((UINT32) ((X * X) + (Y * Y)));
}
UINT8
GetTriColor (
IN UINTN ColorDist,
IN UINTN TriWidth
)
{
return (UINT8) (((TriWidth - ColorDist) * 0x100) / TriWidth);
//return (((TriWidth * TriWidth - ColorDist * ColorDist) * 0x100) / (TriWidth * TriWidth));
}
VOID
TestColor (
VOID
)
{
EFI_GRAPHICS_OUTPUT_BLT_PIXEL Color;
UINTN X, Y;
UINTN X1, X2, X3;
UINTN Y1, Y2;
UINTN LineWidth, TriWidth, ScreenWidth;
UINTN TriHeight, ScreenHeight;
UINT32 ColorDist;
BltLibGetSizes (&ScreenWidth, &ScreenHeight);
*(UINT32*) (&Color) = 0;
BltLibVideoFill (&Color, 0, 0, ScreenWidth, ScreenHeight);
TriWidth = (UINTN) DivU64x32 (
MultU64x32 (11547005, (UINT32) ScreenHeight),
10000000
);
TriHeight = (UINTN) DivU64x32 (
MultU64x32 (8660254, (UINT32) ScreenWidth),
10000000
);
if (TriWidth > ScreenWidth) {
DEBUG ((EFI_D_INFO, "TriWidth at %d was too big\n", TriWidth));
TriWidth = ScreenWidth;
} else if (TriHeight > ScreenHeight) {
DEBUG ((EFI_D_INFO, "TriHeight at %d was too big\n", TriHeight));
TriHeight = ScreenHeight;
}
DEBUG ((EFI_D_INFO, "Triangle Width: %d; Height: %d\n", TriWidth, TriHeight));
X1 = (ScreenWidth - TriWidth) / 2;
X3 = X1 + TriWidth - 1;
X2 = (X1 + X3) / 2;
Y2 = (ScreenHeight - TriHeight) / 2;
Y1 = Y2 + TriHeight - 1;
for (Y = Y2; Y <= Y1; Y++) {
LineWidth =
(UINTN) DivU64x32 (
MultU64x32 (11547005, (UINT32) (Y - Y2)),
20000000
);
for (X = X2 - LineWidth; X < (X2 + LineWidth); X++) {
ColorDist = Uint32Dist(X - X1, Y1 - Y);
Color.Red = GetTriColor (ColorDist, TriWidth);
ColorDist = Uint32Dist((X < X2) ? X2 - X : X - X2, Y - Y2);
Color.Green = GetTriColor (ColorDist, TriWidth);
ColorDist = Uint32Dist(X3 - X, Y1 - Y);
Color.Blue = GetTriColor (ColorDist, TriWidth);
BltLibVideoFill (&Color, X, Y, 1, 1);
}
}
}
/**
The user Entry Point for Application. The user code starts with this function
as the real entry point for the application.
@param[in] ImageHandle The firmware allocated handle for the EFI image.
@param[in] SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The entry point is executed successfully.
@retval other Some error occurs when executing this entry point.
**/
EFI_STATUS
EFIAPI
UefiMain (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_GRAPHICS_OUTPUT_PROTOCOL *Gop;
Status = gBS->HandleProtocol (
gST->ConsoleOutHandle,
&gEfiGraphicsOutputProtocolGuid,
(VOID **) &Gop
);
if (EFI_ERROR (Status)) {
return Status;
}
Status = BltLibConfigure (
(VOID*)(UINTN) Gop->Mode->FrameBufferBase,
Gop->Mode->Info
);
if (EFI_ERROR (Status)) {
return Status;
}
TestFills ();
TestColor ();
return EFI_SUCCESS;
}