+++ /dev/null
-/*
- * PROJECT: ReactOS Framebuffer Display Driver
- * LICENSE: Microsoft NT4 DDK Sample Code License
- * FILE: boot/drivers/video/displays/vga/palette.c
- * PURPOSE: Palette Support
- * PROGRAMMERS: Copyright (c) 1992-1995 Microsoft Corporation
- */
-
-#include "driver.h"
-
-// eVb: 4.1 [VGARISC Change] - Add static 16-color VGA palette from VGA NT4 DDK Sample
-
-/******************************Public*Data*Struct*************************\
-* LOGPALETTE
-*
-* This is the palette for the VGA.
-*
-\**************************************************************************/
-
-// Little bit of hacking to get this to compile happily.
-
-typedef struct _VGALOGPALETTE
-{
- USHORT ident;
- USHORT NumEntries;
- PALETTEENTRY palPalEntry[16];
-} VGALOGPALETTE;
-
-const VGALOGPALETTE logPalVGA =
-{
-
-0x400, // driver version
-16, // num entries
-{
- { 0, 0, 0, 0 }, // 0
- { 0x80,0, 0, 0 }, // 1
- { 0, 0x80,0, 0 }, // 2
- { 0x80,0x80,0, 0 }, // 3
- { 0, 0, 0x80,0 }, // 4
- { 0x80,0, 0x80,0 }, // 5
- { 0, 0x80,0x80,0 }, // 6
- { 0x80,0x80,0x80,0 }, // 7
-
- { 0xC0,0xC0,0xC0,0 }, // 8
- { 0xFF,0, 0, 0 }, // 9
- { 0, 0xFF,0, 0 }, // 10
- { 0xFF,0xFF,0, 0 }, // 11
- { 0, 0, 0xFF,0 }, // 12
- { 0xFF,0, 0xFF,0 }, // 13
- { 0, 0xFF,0xFF,0 }, // 14
- { 0xFF,0xFF,0xFF,0 } // 15
-}
-};
-// eVb: 4.1 [END]
-
-BOOL bInitDefaultPalette(PPDEV ppdev, DEVINFO *pDevInfo);
-
-/******************************Public*Routine******************************\
-* bInitPaletteInfo
-*
-* Initializes the palette information for this PDEV.
-*
-* Called by DrvEnablePDEV.
-*
-\**************************************************************************/
-
-BOOL bInitPaletteInfo(PPDEV ppdev, DEVINFO *pDevInfo)
-{
- if (!bInitDefaultPalette(ppdev, pDevInfo))
- return(FALSE);
-
- return(TRUE);
-}
-
-/******************************Public*Routine******************************\
-* vDisablePalette
-*
-* Frees resources allocated by bInitPaletteInfo.
-*
-\**************************************************************************/
-
-VOID vDisablePalette(PPDEV ppdev)
-{
-// Delete the default palette if we created one.
-
- if (ppdev->hpalDefault)
- {
- EngDeletePalette(ppdev->hpalDefault);
- ppdev->hpalDefault = (HPALETTE) 0;
- }
-
-// eVb: 4.2 [VGARISC Change] - VGA Palette is static, no need to free
-#if 0
- if (ppdev->pPal != (PPALETTEENTRY)NULL)
- EngFreeMem((PVOID)ppdev->pPal);
-#endif
-// eVb: 4.2 [END]
-}
-
-/******************************Public*Routine******************************\
-* bInitDefaultPalette
-*
-* Initializes default palette for PDEV.
-*
-\**************************************************************************/
-
-BOOL bInitDefaultPalette(PPDEV ppdev, DEVINFO *pDevInfo)
-{
-// eVb: 4.3 [VGARISC Change] - VGA Palette is static, no need to build
-#if 0
- if (ppdev->ulBitCount == 8)
- {
- ULONG ulLoop;
- BYTE jRed,jGre,jBlu;
-
- //
- // Allocate our palette
- //
-
- ppdev->pPal = (PPALETTEENTRY)EngAllocMem(0, sizeof(PALETTEENTRY) * 256,
- ALLOC_TAG);
-
- if ((ppdev->pPal) == NULL) {
- RIP("DISP bInitDefaultPalette() failed EngAllocMem\n");
- return(FALSE);
- }
-
- //
- // Generate 256 (8*4*4) RGB combinations to fill the palette
- //
-
- jRed = jGre = jBlu = 0;
-
- for (ulLoop = 0; ulLoop < 256; ulLoop++)
- {
- ppdev->pPal[ulLoop].peRed = jRed;
- ppdev->pPal[ulLoop].peGreen = jGre;
- ppdev->pPal[ulLoop].peBlue = jBlu;
- ppdev->pPal[ulLoop].peFlags = (BYTE)0;
-
- if (!(jRed += 32))
- if (!(jGre += 32))
- jBlu += 64;
- }
-
- //
- // Fill in Windows Reserved Colors from the WIN 3.0 DDK
- // The Window Manager reserved the first and last 10 colors for
- // painting windows borders and for non-palette managed applications.
- //
-
- for (ulLoop = 0; ulLoop < 10; ulLoop++)
- {
- //
- // First 10
- //
-
- ppdev->pPal[ulLoop] = BASEPALETTE[ulLoop];
-
- //
- // Last 10
- //
-
- ppdev->pPal[246 + ulLoop] = BASEPALETTE[ulLoop+10];
- }
-
-#endif
-// eVb: 4.3 [END]
- //
- // Create handle for palette.
- //
-
- ppdev->hpalDefault =
- pDevInfo->hpalDefault = EngCreatePalette(PAL_INDEXED,
-// eVb: 4.4 [VGARISC Change] - VGA Palette is 16 colors, not 256, and static
- 16,
- (PULONG) &logPalVGA.palPalEntry,
-// eVb: 4.4 [END]
- 0,0,0);
-
- if (ppdev->hpalDefault == (HPALETTE) 0)
- {
- RIP("DISP bInitDefaultPalette failed EngCreatePalette\n");
-// eVb: 4.5 [VGARISC Change] - VGA Palette is static, no need to free
- //EngFreeMem(ppdev->pPal);
-// eVb: 4.5 [END]
- return(FALSE);
- }
-
- //
- // Initialize the hardware with the initial palette.
- //
-
- return(TRUE);
-
-// eVb: 4.6 [VGARISC Change] - VGA Palette is static, no bitfield palette needed
-#if 0
- } else {
-
- ppdev->hpalDefault =
- pDevInfo->hpalDefault = EngCreatePalette(PAL_BITFIELDS,
- 0,(PULONG) NULL,
- ppdev->flRed,
- ppdev->flGreen,
- ppdev->flBlue);
-
- if (ppdev->hpalDefault == (HPALETTE) 0)
- {
- RIP("DISP bInitDefaultPalette failed EngCreatePalette\n");
- return(FALSE);
- }
- }
-
- return(TRUE);
-#endif
-// eVb: 4.6 [END]
-}
-
-/******************************Public*Routine******************************\
-* bInit256ColorPalette
-*
-* Initialize the hardware's palette registers.
-*
-\**************************************************************************/
-
-BOOL bInit256ColorPalette(PPDEV ppdev)
-{
- BYTE ajClutSpace[MAX_CLUT_SIZE];
- PVIDEO_CLUT pScreenClut;
- ULONG ulReturnedDataLength;
- ULONG cColors;
- PVIDEO_CLUTDATA pScreenClutData;
-
- if (ppdev->ulBitCount == 8)
- {
- //
- // Fill in pScreenClut header info:
- //
-
- pScreenClut = (PVIDEO_CLUT) ajClutSpace;
- pScreenClut->NumEntries = 256;
- pScreenClut->FirstEntry = 0;
-
- //
- // Copy colours in:
- //
-
- cColors = 256;
- pScreenClutData = (PVIDEO_CLUTDATA) (&(pScreenClut->LookupTable[0]));
-
- while(cColors--)
- {
- pScreenClutData[cColors].Red = ppdev->pPal[cColors].peRed >>
- ppdev->cPaletteShift;
- pScreenClutData[cColors].Green = ppdev->pPal[cColors].peGreen >>
- ppdev->cPaletteShift;
- pScreenClutData[cColors].Blue = ppdev->pPal[cColors].peBlue >>
- ppdev->cPaletteShift;
- pScreenClutData[cColors].Unused = 0;
- }
-
- //
- // Set palette registers:
- //
-
- if (EngDeviceIoControl(ppdev->hDriver,
- IOCTL_VIDEO_SET_COLOR_REGISTERS,
- pScreenClut,
- MAX_CLUT_SIZE,
- NULL,
- 0,
- &ulReturnedDataLength))
- {
- DISPDBG((0, "Failed bEnablePalette"));
- return(FALSE);
- }
- }
-
- DISPDBG((5, "Passed bEnablePalette"));
-
- return(TRUE);
-}
-
-/******************************Public*Routine******************************\
-* DrvSetPalette
-*
-* DDI entry point for manipulating the palette.
-*
-\**************************************************************************/
-
-BOOL DrvSetPalette(
-DHPDEV dhpdev,
-PALOBJ* ppalo,
-FLONG fl,
-ULONG iStart,
-ULONG cColors)
-{
- BYTE ajClutSpace[MAX_CLUT_SIZE];
- PVIDEO_CLUT pScreenClut;
- PVIDEO_CLUTDATA pScreenClutData;
- PDEV* ppdev;
-
- UNREFERENCED_PARAMETER(fl);
-
- ppdev = (PDEV*) dhpdev;
-
- //
- // Fill in pScreenClut header info:
- //
-
- pScreenClut = (PVIDEO_CLUT) ajClutSpace;
- pScreenClut->NumEntries = (USHORT) cColors;
- pScreenClut->FirstEntry = (USHORT) iStart;
-
- pScreenClutData = (PVIDEO_CLUTDATA) (&(pScreenClut->LookupTable[0]));
-
- if (cColors != PALOBJ_cGetColors(ppalo, iStart, cColors,
- (ULONG*) pScreenClutData))
- {
- DISPDBG((0, "DrvSetPalette failed PALOBJ_cGetColors\n"));
- return (FALSE);
- }
-
- //
- // Set the high reserved byte in each palette entry to 0.
- // Do the appropriate palette shifting to fit in the DAC.
- //
-
- if (ppdev->cPaletteShift)
- {
- while(cColors--)
- {
- pScreenClutData[cColors].Red >>= ppdev->cPaletteShift;
- pScreenClutData[cColors].Green >>= ppdev->cPaletteShift;
- pScreenClutData[cColors].Blue >>= ppdev->cPaletteShift;
- pScreenClutData[cColors].Unused = 0;
- }
- }
- else
- {
- while(cColors--)
- {
- pScreenClutData[cColors].Unused = 0;
- }
- }
-
- //
- // Set palette registers
- //
-
- if (EngDeviceIoControl(ppdev->hDriver,
- IOCTL_VIDEO_SET_COLOR_REGISTERS,
- pScreenClut,
- MAX_CLUT_SIZE,
- NULL,
- 0,
- &cColors))
- {
- DISPDBG((0, "DrvSetPalette failed EngDeviceIoControl\n"));
- return (FALSE);
- }
-
- return(TRUE);
-
-}
projects / reactos.git / blobdiff