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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** GUIX Component */ |
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/** */ |
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/** Display Management (Display) */ |
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/** */ |
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/**************************************************************************/ |
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#define GX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "gx_api.h" |
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#include "gx_display.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_display_driver_32argb_pixelmap_raw_blend PORTABLE C */ |
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/* 6.1.7 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* Internal helper function that handles blending of uncompressed */ |
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/* pixlemap file without alpha channel. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* context Drawing context */ |
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/* xpos x-coord of top-left draw point*/ |
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/* ypos y-coord of top-left draw point*/ |
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/* pixelmap Pointer to GX_PIXELMAP struct */ |
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/* alpha blending value 0 to 255 */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* None */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_display_driver_32xrgb_pixel_blend Display driver pixel blend */ |
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/* function */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* _gx_display_driver_32argb_pixelmap_blend */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* 06-02-2021 Kenneth Maxwell Modified comment(s), */ |
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/* removed unused variable */ |
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/* assignment, */ |
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/* resulting in version 6.1.7 */ |
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/* */ |
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/**************************************************************************/ |
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static VOID _gx_display_driver_32argb_pixelmap_raw_blend(GX_DRAW_CONTEXT *context, |
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INT xpos, INT ypos, |
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GX_PIXELMAP *pixelmap, |
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GX_UBYTE alpha) |
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{ |
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INT yval; |
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INT xval; |
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GX_COLOR color; |
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GX_COLOR *get; |
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GX_COLOR *getrow; |
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GX_RECTANGLE *clip = context -> gx_draw_context_clip; |
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getrow = (GX_COLOR *)((UINT)(pixelmap -> gx_pixelmap_data) + sizeof(GX_COLOR) * (UINT)(pixelmap -> gx_pixelmap_width) * (UINT)((INT)(clip -> gx_rectangle_top) - ypos)); |
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getrow += (clip -> gx_rectangle_left - xpos); |
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✓✓ |
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for (yval = clip -> gx_rectangle_top; yval <= clip -> gx_rectangle_bottom; yval++) |
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{ |
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get = getrow; |
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✓✓ |
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for (xval = clip -> gx_rectangle_left; xval <= clip -> gx_rectangle_right; xval++) |
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{ |
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color = *get; |
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get++; |
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_gx_display_driver_32argb_pixel_blend(context, xval, yval, color, alpha); |
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} |
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getrow += pixelmap -> gx_pixelmap_width; |
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} |
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} |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_display_driver_32argb_pixelmap_alpha_blend PORTABLE C */ |
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/* 6.1.7 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* Internal helper function that handles blending of uncompressed */ |
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/* pixlemap file with alpha channel. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* context Drawing context */ |
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/* xpos x-coord of top-left draw point*/ |
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/* ypos y-coord of top-left draw point*/ |
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/* pixelmap Pointer to GX_PIXELMAP struct */ |
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/* alpha blending value 0 to 255 */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* None */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_display_driver_32xrgb_pixel_blend Display driver pixel blend */ |
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/* function */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* _gx_display_driver_32argb_pixelmap_blend */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* 06-02-2021 Kenneth Maxwell Modified comment(s), */ |
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/* removed unused variable */ |
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/* assignment, */ |
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/* resulting in version 6.1.7 */ |
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/* */ |
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/**************************************************************************/ |
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static VOID _gx_display_driver_32argb_pixelmap_alpha_blend(GX_DRAW_CONTEXT *context, |
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INT xpos, INT ypos, GX_PIXELMAP *pixelmap, GX_UBYTE alpha) |
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{ |
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int xval; |
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int yval; |
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int color; |
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int width; |
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ULONG *get; |
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GX_RECTANGLE *clip = context -> gx_draw_context_clip; |
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get = (ULONG *)((pixelmap -> gx_pixelmap_data) + sizeof(GX_COLOR) * (UINT)pixelmap -> gx_pixelmap_width * (UINT)((INT)clip -> gx_rectangle_top - ypos)); |
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get += (clip -> gx_rectangle_left - xpos); |
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width = clip -> gx_rectangle_right - clip -> gx_rectangle_left + 1; |
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✓✓ |
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for (yval = clip -> gx_rectangle_top; yval <= clip -> gx_rectangle_bottom; yval++) |
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{ |
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✓✓ |
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for (xval = clip -> gx_rectangle_left; xval <= clip -> gx_rectangle_right; xval++) |
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{ |
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color = (int)(*get); |
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_gx_display_driver_32argb_pixel_blend(context, xval, yval, (GX_COLOR)color, alpha); |
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get++; |
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} |
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get += pixelmap -> gx_pixelmap_width - width; |
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} |
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} |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_display_driver_32argb_pixelmap_blend PORTABLE C */ |
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/* 6.1 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* 32xrgb format screen driver pixelmap blending function that */ |
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/* handles compressed or uncompress, with or without alpha channel. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* context Drawing context */ |
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/* xpos x-coord of top-left draw point*/ |
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/* ypos y-coord of top-left draw point*/ |
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/* pixelmap Pointer to GX_PIXELMAP struct */ |
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/* alpha blending value 0 to 255 */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* None */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_display_driver_32argb_pixelmap_alpha_blend */ |
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/* Real pixelmap blend function */ |
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/* _gx_display_driver_32argb_pixelmap_raw_blend */ |
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/* Real pixelmap blend function */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* GUIX Internal Code */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* */ |
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/**************************************************************************/ |
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VOID _gx_display_driver_32argb_pixelmap_blend(GX_DRAW_CONTEXT *context, |
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INT xpos, INT ypos, GX_PIXELMAP *pixelmap, GX_UBYTE alpha) |
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{ |
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✓✓ |
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if (pixelmap -> gx_pixelmap_flags & GX_PIXELMAP_TRANSPARENT) |
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{ |
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/* Not supported yet. */ |
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return; |
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} |
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✓✓ |
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if (pixelmap -> gx_pixelmap_flags & GX_PIXELMAP_COMPRESSED) |
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{ |
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return; |
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} |
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✓✓ |
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if (pixelmap -> gx_pixelmap_format != GX_COLOR_FORMAT_32ARGB) |
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{ |
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/* wrong color format for this driver */ |
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return; |
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} |
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✓✓ |
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if (pixelmap -> gx_pixelmap_flags & GX_PIXELMAP_ALPHA) |
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{ |
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/* alpha, no compression */ |
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_gx_display_driver_32argb_pixelmap_alpha_blend(context, xpos, ypos, pixelmap, alpha); |
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} |
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else |
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{ |
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/* no compression or alpha */ |
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_gx_display_driver_32argb_pixelmap_raw_blend(context, xpos, ypos, pixelmap, alpha); |
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} |
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} |
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