456 lines
12 KiB
C
456 lines
12 KiB
C
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/******************************Module*Header*******************************\
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*
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* *******************
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* * GDI SAMPLE CODE *
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* *******************
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*
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* Module Name: Lineto.c
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*
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* DrvLineTo for S3 driver
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*
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* Copyright (c) 1995-1998 Microsoft Corporation
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\**************************************************************************/
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#include "precomp.h"
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// For the S3, we use the following flags to denote the quadrant, and
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// we use this as an index into 'gaiLineBias' to determine the Bresenham
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// error bias:
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#define QUAD_PLUS_X 1
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#define QUAD_MAJOR_Y 2
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#define QUAD_PLUS_Y 4
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LONG gaiLineBias[] = { 0, 0, 0, 1, 1, 1, 0, 1 };
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// We shift these flags by 'QUADRANT_SHIFT' to send the actual
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// command to the S3:
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#define QUADRANT_SHIFT 5
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/******************************Public*Routine******************************\
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* VOID vNwLineToTrivial
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*
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* Draws a single solid integer-only unclipped cosmetic line using
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* 'New MM I/O'.
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*
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* We can't use the point-to-point capabilities of the S3 because its
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* tie-breaker convention doesn't match that of NT's in two octants,
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* and would cause us to fail HCTs.
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*
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\**************************************************************************/
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VOID vNwLineToTrivial(
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PDEV* ppdev,
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LONG x, // Passed in x1
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LONG y, // Passed in y1
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LONG dx, // Passed in x2
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LONG dy, // Passed in y2
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ULONG iSolidColor, // -1 means hardware is already set up
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MIX mix)
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{
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BYTE* pjMmBase;
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FLONG flQuadrant;
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pjMmBase = ppdev->pjMmBase;
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NW_FIFO_WAIT(ppdev, pjMmBase, 8);
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if (iSolidColor != (ULONG) -1)
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{
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NW_FRGD_COLOR(ppdev, pjMmBase, iSolidColor);
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NW_ALT_MIX(ppdev, pjMmBase, FOREGROUND_COLOR |
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gajHwMixFromMix[mix & 0xf], 0);
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MM_PIX_CNTL(ppdev, pjMmBase, ALL_ONES);
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}
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NW_ABS_CURXY(ppdev, pjMmBase, x, y);
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flQuadrant = (QUAD_PLUS_X | QUAD_PLUS_Y);
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dx -= x;
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if (dx < 0)
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{
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dx = -dx;
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flQuadrant &= ~QUAD_PLUS_X;
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}
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dy -= y;
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if (dy < 0)
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{
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dy = -dy;
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flQuadrant &= ~QUAD_PLUS_Y;
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}
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if (dy > dx)
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{
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register LONG l;
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l = dy;
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dy = dx;
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dx = l; // Swap 'dx' and 'dy'
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flQuadrant |= QUAD_MAJOR_Y;
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}
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NW_ALT_PCNT(ppdev, pjMmBase, dx, 0);
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NW_ALT_STEP(ppdev, pjMmBase, dy - dx, dy);
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NW_ALT_ERR(ppdev, pjMmBase, 0,
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(dy + dy - dx - gaiLineBias[flQuadrant]) >> 1);
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NW_ALT_CMD(ppdev, pjMmBase, (flQuadrant << QUADRANT_SHIFT) |
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(DRAW_LINE | DRAW | DIR_TYPE_XY |
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MULTIPLE_PIXELS | WRITE | LAST_PIXEL_OFF));
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}
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/******************************Public*Routine******************************\
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* VOID vNwLineToClipped
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*
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* Draws a single solid integer-only clipped cosmetic line using
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* 'New MM I/O'.
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*
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\**************************************************************************/
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VOID vNwLineToClipped(
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PDEV* ppdev,
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LONG x1,
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LONG y1,
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LONG x2,
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LONG y2,
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ULONG iSolidColor,
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MIX mix,
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RECTL* prclClip)
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{
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BYTE* pjMmBase;
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LONG xOffset;
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LONG yOffset;
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pjMmBase = ppdev->pjMmBase;
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xOffset = ppdev->xOffset;
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yOffset = ppdev->yOffset;
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NW_FIFO_WAIT(ppdev, pjMmBase, 2);
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NW_ABS_SCISSORS_LT(ppdev, pjMmBase,
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prclClip->left + xOffset,
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prclClip->top + yOffset);
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NW_ABS_SCISSORS_RB(ppdev, pjMmBase,
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prclClip->right + xOffset - 1,
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prclClip->bottom + yOffset - 1);
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vNwLineToTrivial(ppdev, x1, y1, x2, y2, iSolidColor, mix);
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NW_FIFO_WAIT(ppdev, pjMmBase, 2);
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NW_ABS_SCISSORS_LT(ppdev, pjMmBase, 0, 0);
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NW_ABS_SCISSORS_RB(ppdev, pjMmBase,
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ppdev->cxMemory - 1,
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ppdev->cyMemory - 1);
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}
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/******************************Public*Routine******************************\
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* VOID vMmLineToTrivial
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*
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* Draws a single solid integer-only unclipped cosmetic line using
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* 'Old MM I/O'.
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*
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\**************************************************************************/
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VOID vMmLineToTrivial(
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PDEV* ppdev,
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LONG x, // Passed in x1
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LONG y, // Passed in y1
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LONG dx, // Passed in x2
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LONG dy, // Passed in y2
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ULONG iSolidColor, // -1 means hardware is already set up
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MIX mix)
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{
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BYTE* pjMmBase;
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FLONG flQuadrant;
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pjMmBase = ppdev->pjMmBase;
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if (iSolidColor != (ULONG) -1)
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{
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IO_FIFO_WAIT(ppdev, 3);
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MM_FRGD_COLOR(ppdev, pjMmBase, iSolidColor);
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MM_FRGD_MIX(ppdev, pjMmBase, FOREGROUND_COLOR | gajHwMixFromMix[mix & 0xf]);
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MM_PIX_CNTL(ppdev, pjMmBase, ALL_ONES);
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}
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IO_FIFO_WAIT(ppdev, 7);
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MM_ABS_CUR_X(ppdev, pjMmBase, x);
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MM_ABS_CUR_Y(ppdev, pjMmBase, y);
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flQuadrant = (QUAD_PLUS_X | QUAD_PLUS_Y);
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dx -= x;
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if (dx < 0)
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{
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dx = -dx;
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flQuadrant &= ~QUAD_PLUS_X;
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}
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dy -= y;
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if (dy < 0)
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{
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dy = -dy;
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flQuadrant &= ~QUAD_PLUS_Y;
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}
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if (dy > dx)
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{
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register LONG l;
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l = dy;
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dy = dx;
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dx = l; // Swap 'dx' and 'dy'
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flQuadrant |= QUAD_MAJOR_Y;
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}
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MM_MAJ_AXIS_PCNT(ppdev, pjMmBase, dx);
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MM_AXSTP(ppdev, pjMmBase, dy);
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MM_DIASTP(ppdev, pjMmBase, dy - dx);
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MM_ERR_TERM(ppdev, pjMmBase,
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(dy + dy - dx - gaiLineBias[flQuadrant]) >> 1);
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MM_CMD(ppdev, pjMmBase, (flQuadrant << QUADRANT_SHIFT) |
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(DRAW_LINE | DRAW | DIR_TYPE_XY |
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MULTIPLE_PIXELS | WRITE | LAST_PIXEL_OFF));
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}
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/******************************Public*Routine******************************\
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* VOID vMmLineToClipped
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*
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* Draws a single solid integer-only clipped cosmetic line using
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* 'Old MM I/O'.
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*
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\**************************************************************************/
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VOID vMmLineToClipped(
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PDEV* ppdev,
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LONG x1,
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LONG y1,
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LONG x2,
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LONG y2,
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ULONG iSolidColor,
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MIX mix,
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RECTL* prclClip)
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{
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BYTE* pjMmBase;
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LONG xOffset;
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LONG yOffset;
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pjMmBase = ppdev->pjMmBase;
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xOffset = ppdev->xOffset;
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yOffset = ppdev->yOffset;
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IO_FIFO_WAIT(ppdev, 4);
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MM_ABS_SCISSORS_L(ppdev, pjMmBase, prclClip->left + xOffset);
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MM_ABS_SCISSORS_R(ppdev, pjMmBase, prclClip->right + xOffset - 1);
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MM_ABS_SCISSORS_T(ppdev, pjMmBase, prclClip->top + yOffset);
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MM_ABS_SCISSORS_B(ppdev, pjMmBase, prclClip->bottom + yOffset - 1);
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vMmLineToTrivial(ppdev, x1, y1, x2, y2, iSolidColor, mix);
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IO_FIFO_WAIT(ppdev, 4);
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MM_ABS_SCISSORS_L(ppdev, pjMmBase, 0);
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MM_ABS_SCISSORS_T(ppdev, pjMmBase, 0);
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MM_ABS_SCISSORS_R(ppdev, pjMmBase, ppdev->cxMemory - 1);
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MM_ABS_SCISSORS_B(ppdev, pjMmBase, ppdev->cyMemory - 1);
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}
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/******************************Public*Routine******************************\
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* VOID vIoLineToTrivial
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*
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* Draws a single solid integer-only unclipped cosmetic line using
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* 'Old I/O'.
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*
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\**************************************************************************/
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VOID vIoLineToTrivial(
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PDEV* ppdev,
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LONG x, // Passed in x1
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LONG y, // Passed in y1
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LONG dx, // Passed in x2
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LONG dy, // Passed in y2
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ULONG iSolidColor, // -1 means hardware is already set up
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MIX mix)
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{
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BYTE* pjMmBase;
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FLONG flQuadrant;
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pjMmBase = ppdev->pjMmBase;
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if (iSolidColor != (ULONG) -1)
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{
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IO_FIFO_WAIT(ppdev, 4);
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if (DEPTH32(ppdev))
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{
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IO_FRGD_COLOR32(ppdev, iSolidColor);
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}
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else
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{
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IO_FRGD_COLOR(ppdev, iSolidColor);
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}
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IO_FRGD_MIX(ppdev, FOREGROUND_COLOR | gajHwMixFromMix[mix & 0xf]);
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IO_PIX_CNTL(ppdev, ALL_ONES);
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}
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IO_FIFO_WAIT(ppdev, 7);
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IO_ABS_CUR_X(ppdev, x);
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IO_ABS_CUR_Y(ppdev, y);
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flQuadrant = (QUAD_PLUS_X | QUAD_PLUS_Y);
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dx -= x;
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if (dx < 0)
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{
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dx = -dx;
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flQuadrant &= ~QUAD_PLUS_X;
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}
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dy -= y;
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if (dy < 0)
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{
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dy = -dy;
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flQuadrant &= ~QUAD_PLUS_Y;
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}
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if (dy > dx)
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{
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register LONG l;
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l = dy;
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dy = dx;
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dx = l; // Swap 'dx' and 'dy'
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flQuadrant |= QUAD_MAJOR_Y;
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}
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IO_MAJ_AXIS_PCNT(ppdev, dx);
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IO_AXSTP(ppdev, dy);
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IO_DIASTP(ppdev, dy - dx);
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IO_ERR_TERM(ppdev, (dy + dy - dx - gaiLineBias[flQuadrant]) >> 1);
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IO_CMD(ppdev, (flQuadrant << QUADRANT_SHIFT) |
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(DRAW_LINE | DRAW | DIR_TYPE_XY |
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MULTIPLE_PIXELS | WRITE | LAST_PIXEL_OFF));
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}
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/******************************Public*Routine******************************\
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* VOID vIoLineToClipped
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*
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* Draws a single solid integer-only clipped cosmetic line using
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* 'Old I/O'.
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*
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\**************************************************************************/
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VOID vIoLineToClipped(
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PDEV* ppdev,
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LONG x1,
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LONG y1,
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LONG x2,
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LONG y2,
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ULONG iSolidColor,
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MIX mix,
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RECTL* prclClip)
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{
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BYTE* pjMmBase;
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LONG xOffset;
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LONG yOffset;
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pjMmBase = ppdev->pjMmBase;
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xOffset = ppdev->xOffset;
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yOffset = ppdev->yOffset;
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IO_FIFO_WAIT(ppdev, 4);
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IO_ABS_SCISSORS_L(ppdev, prclClip->left + xOffset);
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IO_ABS_SCISSORS_R(ppdev, prclClip->right + xOffset - 1);
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IO_ABS_SCISSORS_T(ppdev, prclClip->top + yOffset);
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IO_ABS_SCISSORS_B(ppdev, prclClip->bottom + yOffset - 1);
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vIoLineToTrivial(ppdev, x1, y1, x2, y2, iSolidColor, mix);
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IO_FIFO_WAIT(ppdev, 4);
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IO_ABS_SCISSORS_L(ppdev, 0);
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IO_ABS_SCISSORS_T(ppdev, 0);
|
||
|
|
IO_ABS_SCISSORS_R(ppdev, ppdev->cxMemory - 1);
|
||
|
|
IO_ABS_SCISSORS_B(ppdev, ppdev->cyMemory - 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/******************************Public*Routine******************************\
|
||
|
|
* BOOL DrvLineTo(pso, pco, pbo, x1, y1, x2, y2, prclBounds, mix)
|
||
|
|
*
|
||
|
|
* Draws a single solid integer-only cosmetic line.
|
||
|
|
*
|
||
|
|
\**************************************************************************/
|
||
|
|
|
||
|
|
BOOL DrvLineTo(
|
||
|
|
SURFOBJ* pso,
|
||
|
|
CLIPOBJ* pco,
|
||
|
|
BRUSHOBJ* pbo,
|
||
|
|
LONG x1,
|
||
|
|
LONG y1,
|
||
|
|
LONG x2,
|
||
|
|
LONG y2,
|
||
|
|
RECTL* prclBounds,
|
||
|
|
MIX mix)
|
||
|
|
{
|
||
|
|
PDEV* ppdev;
|
||
|
|
DSURF* pdsurf;
|
||
|
|
LONG xOffset;
|
||
|
|
LONG yOffset;
|
||
|
|
BOOL bRet;
|
||
|
|
|
||
|
|
// Pass the surface off to GDI if it's a device bitmap that we've
|
||
|
|
// converted to a DIB:
|
||
|
|
|
||
|
|
pdsurf = (DSURF*) pso->dhsurf;
|
||
|
|
ASSERTDD(!(pdsurf->dt & DT_DIB), "Didn't expect DT_DIB");
|
||
|
|
|
||
|
|
// We'll be drawing to the screen or an off-screen DFB; copy the surface's
|
||
|
|
// offset now so that we won't need to refer to the DSURF again:
|
||
|
|
|
||
|
|
ppdev = (PDEV*) pso->dhpdev;
|
||
|
|
|
||
|
|
xOffset = pdsurf->x;
|
||
|
|
yOffset = pdsurf->y;
|
||
|
|
|
||
|
|
x1 += xOffset;
|
||
|
|
x2 += xOffset;
|
||
|
|
y1 += yOffset;
|
||
|
|
y2 += yOffset;
|
||
|
|
|
||
|
|
bRet = TRUE;
|
||
|
|
|
||
|
|
if (pco == NULL)
|
||
|
|
{
|
||
|
|
ppdev->pfnLineToTrivial(ppdev, x1, y1, x2, y2, pbo->iSolidColor, mix);
|
||
|
|
}
|
||
|
|
else if ((pco->iDComplexity <= DC_RECT) &&
|
||
|
|
(prclBounds->left >= MIN_INTEGER_BOUND) &&
|
||
|
|
(prclBounds->top >= MIN_INTEGER_BOUND) &&
|
||
|
|
(prclBounds->right <= MAX_INTEGER_BOUND) &&
|
||
|
|
(prclBounds->bottom <= MAX_INTEGER_BOUND))
|
||
|
|
{
|
||
|
|
// s3 diamond 968 doesn't like negative x coordinates.
|
||
|
|
if ((ppdev->iBitmapFormat == BMF_24BPP) && (prclBounds->left < 0))
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
ppdev->xOffset = xOffset;
|
||
|
|
ppdev->yOffset = yOffset;
|
||
|
|
|
||
|
|
ppdev->pfnLineToClipped(ppdev, x1, y1, x2, y2, pbo->iSolidColor, mix,
|
||
|
|
&pco->rclBounds);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
bRet = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return(bRet);
|
||
|
|
}
|