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https://github.com/libsdl-org/SDL.git
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Add dummy driver
This commit is contained in:
Daniel Santos
committed by
Sam Lantinga
Sam Lantinga
parent
a81aa99298
commit
2660449c6c
362
src/render/ps2/SDL_blendpoint.c
Normal file
362
src/render/ps2/SDL_blendpoint.c
Normal file
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2022 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#if SDL_VIDEO_RENDER_PS2 && !SDL_RENDER_DISABLED
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#include "SDL_draw.h"
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#include "SDL_blendpoint.h"
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static int
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SDL_BlendPoint_RGB555(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
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Uint8 g, Uint8 b, Uint8 a)
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{
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unsigned inva = 0xff - a;
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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DRAW_SETPIXELXY_BLEND_RGB555(x, y);
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break;
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case SDL_BLENDMODE_ADD:
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DRAW_SETPIXELXY_ADD_RGB555(x, y);
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break;
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case SDL_BLENDMODE_MOD:
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DRAW_SETPIXELXY_MOD_RGB555(x, y);
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break;
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case SDL_BLENDMODE_MUL:
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DRAW_SETPIXELXY_MUL_RGB555(x, y);
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break;
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default:
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DRAW_SETPIXELXY_RGB555(x, y);
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break;
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}
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return 0;
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}
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static int
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SDL_BlendPoint_RGB565(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
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Uint8 g, Uint8 b, Uint8 a)
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{
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unsigned inva = 0xff - a;
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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DRAW_SETPIXELXY_BLEND_RGB565(x, y);
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break;
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case SDL_BLENDMODE_ADD:
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DRAW_SETPIXELXY_ADD_RGB565(x, y);
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break;
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case SDL_BLENDMODE_MOD:
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DRAW_SETPIXELXY_MOD_RGB565(x, y);
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break;
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case SDL_BLENDMODE_MUL:
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DRAW_SETPIXELXY_MUL_RGB565(x, y);
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break;
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default:
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DRAW_SETPIXELXY_RGB565(x, y);
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break;
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}
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return 0;
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}
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static int
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SDL_BlendPoint_RGB888(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
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Uint8 g, Uint8 b, Uint8 a)
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{
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unsigned inva = 0xff - a;
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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DRAW_SETPIXELXY_BLEND_RGB888(x, y);
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break;
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case SDL_BLENDMODE_ADD:
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DRAW_SETPIXELXY_ADD_RGB888(x, y);
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break;
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case SDL_BLENDMODE_MOD:
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DRAW_SETPIXELXY_MOD_RGB888(x, y);
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break;
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case SDL_BLENDMODE_MUL:
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DRAW_SETPIXELXY_MUL_RGB888(x, y);
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break;
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default:
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DRAW_SETPIXELXY_RGB888(x, y);
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break;
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}
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return 0;
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}
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static int
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SDL_BlendPoint_ARGB8888(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode,
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Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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unsigned inva = 0xff - a;
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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DRAW_SETPIXELXY_BLEND_ARGB8888(x, y);
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break;
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case SDL_BLENDMODE_ADD:
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DRAW_SETPIXELXY_ADD_ARGB8888(x, y);
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break;
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case SDL_BLENDMODE_MOD:
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DRAW_SETPIXELXY_MOD_ARGB8888(x, y);
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break;
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case SDL_BLENDMODE_MUL:
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DRAW_SETPIXELXY_MUL_ARGB8888(x, y);
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break;
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default:
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DRAW_SETPIXELXY_ARGB8888(x, y);
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break;
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}
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return 0;
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}
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static int
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SDL_BlendPoint_RGB(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
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Uint8 g, Uint8 b, Uint8 a)
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{
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SDL_PixelFormat *fmt = dst->format;
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unsigned inva = 0xff - a;
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switch (fmt->BytesPerPixel) {
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case 2:
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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DRAW_SETPIXELXY2_BLEND_RGB(x, y);
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break;
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case SDL_BLENDMODE_ADD:
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DRAW_SETPIXELXY2_ADD_RGB(x, y);
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break;
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case SDL_BLENDMODE_MOD:
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DRAW_SETPIXELXY2_MOD_RGB(x, y);
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break;
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case SDL_BLENDMODE_MUL:
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DRAW_SETPIXELXY2_MUL_RGB(x, y);
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break;
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default:
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DRAW_SETPIXELXY2_RGB(x, y);
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break;
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}
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return 0;
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case 4:
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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DRAW_SETPIXELXY4_BLEND_RGB(x, y);
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break;
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case SDL_BLENDMODE_ADD:
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DRAW_SETPIXELXY4_ADD_RGB(x, y);
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break;
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case SDL_BLENDMODE_MOD:
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DRAW_SETPIXELXY4_MOD_RGB(x, y);
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break;
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case SDL_BLENDMODE_MUL:
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DRAW_SETPIXELXY4_MUL_RGB(x, y);
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break;
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default:
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DRAW_SETPIXELXY4_RGB(x, y);
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break;
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}
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return 0;
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default:
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return SDL_Unsupported();
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}
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}
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static int
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SDL_BlendPoint_RGBA(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
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Uint8 g, Uint8 b, Uint8 a)
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{
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SDL_PixelFormat *fmt = dst->format;
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unsigned inva = 0xff - a;
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switch (fmt->BytesPerPixel) {
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case 4:
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switch (blendMode) {
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case SDL_BLENDMODE_BLEND:
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DRAW_SETPIXELXY4_BLEND_RGBA(x, y);
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break;
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case SDL_BLENDMODE_ADD:
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DRAW_SETPIXELXY4_ADD_RGBA(x, y);
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break;
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case SDL_BLENDMODE_MOD:
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DRAW_SETPIXELXY4_MOD_RGBA(x, y);
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break;
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case SDL_BLENDMODE_MUL:
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DRAW_SETPIXELXY4_MUL_RGBA(x, y);
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break;
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default:
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DRAW_SETPIXELXY4_RGBA(x, y);
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break;
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}
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return 0;
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default:
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return SDL_Unsupported();
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}
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}
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int
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SDL_BlendPoint(SDL_Surface * dst, int x, int y, SDL_BlendMode blendMode, Uint8 r,
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Uint8 g, Uint8 b, Uint8 a)
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{
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if (!dst) {
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return SDL_InvalidParamError("SDL_BlendPoint(): dst");
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}
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/* This function doesn't work on surfaces < 8 bpp */
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if (dst->format->BitsPerPixel < 8) {
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return SDL_SetError("SDL_BlendPoint(): Unsupported surface format");
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}
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/* Perform clipping */
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if (x < dst->clip_rect.x || y < dst->clip_rect.y ||
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x >= (dst->clip_rect.x + dst->clip_rect.w) ||
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y >= (dst->clip_rect.y + dst->clip_rect.h)) {
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return 0;
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}
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if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
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r = DRAW_MUL(r, a);
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g = DRAW_MUL(g, a);
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b = DRAW_MUL(b, a);
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}
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switch (dst->format->BitsPerPixel) {
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case 15:
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switch (dst->format->Rmask) {
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case 0x7C00:
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return SDL_BlendPoint_RGB555(dst, x, y, blendMode, r, g, b, a);
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}
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break;
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case 16:
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switch (dst->format->Rmask) {
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case 0xF800:
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return SDL_BlendPoint_RGB565(dst, x, y, blendMode, r, g, b, a);
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}
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break;
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case 32:
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switch (dst->format->Rmask) {
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case 0x00FF0000:
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if (!dst->format->Amask) {
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return SDL_BlendPoint_RGB888(dst, x, y, blendMode, r, g, b, a);
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} else {
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return SDL_BlendPoint_ARGB8888(dst, x, y, blendMode, r, g, b, a);
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}
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/* break; -Wunreachable-code-break */
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}
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break;
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default:
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break;
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}
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if (!dst->format->Amask) {
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return SDL_BlendPoint_RGB(dst, x, y, blendMode, r, g, b, a);
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} else {
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return SDL_BlendPoint_RGBA(dst, x, y, blendMode, r, g, b, a);
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}
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}
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int
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SDL_BlendPoints(SDL_Surface * dst, const SDL_Point * points, int count,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
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{
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int minx, miny;
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int maxx, maxy;
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int i;
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int x, y;
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int (*func)(SDL_Surface * dst, int x, int y,
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SDL_BlendMode blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a) = NULL;
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int status = 0;
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if (!dst) {
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return SDL_InvalidParamError("SDL_BlendPoints(): dst");
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}
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/* This function doesn't work on surfaces < 8 bpp */
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if (dst->format->BitsPerPixel < 8) {
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return SDL_SetError("SDL_BlendPoints(): Unsupported surface format");
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}
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if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
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r = DRAW_MUL(r, a);
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g = DRAW_MUL(g, a);
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b = DRAW_MUL(b, a);
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}
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/* FIXME: Does this function pointer slow things down significantly? */
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switch (dst->format->BitsPerPixel) {
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case 15:
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switch (dst->format->Rmask) {
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case 0x7C00:
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func = SDL_BlendPoint_RGB555;
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break;
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}
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break;
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case 16:
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switch (dst->format->Rmask) {
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case 0xF800:
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func = SDL_BlendPoint_RGB565;
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break;
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}
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break;
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case 32:
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switch (dst->format->Rmask) {
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case 0x00FF0000:
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if (!dst->format->Amask) {
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func = SDL_BlendPoint_RGB888;
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} else {
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func = SDL_BlendPoint_ARGB8888;
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}
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break;
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}
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break;
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default:
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break;
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}
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if (!func) {
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if (!dst->format->Amask) {
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func = SDL_BlendPoint_RGB;
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} else {
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func = SDL_BlendPoint_RGBA;
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}
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}
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minx = dst->clip_rect.x;
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maxx = dst->clip_rect.x + dst->clip_rect.w - 1;
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miny = dst->clip_rect.y;
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maxy = dst->clip_rect.y + dst->clip_rect.h - 1;
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for (i = 0; i < count; ++i) {
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x = points[i].x;
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y = points[i].y;
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if (x < minx || x > maxx || y < miny || y > maxy) {
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continue;
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}
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status = func(dst, x, y, blendMode, r, g, b, a);
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}
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return status;
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}
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#endif /* SDL_VIDEO_RENDER_SW && !SDL_RENDER_DISABLED */
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/* vi: set ts=4 sw=4 expandtab: */
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