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2ba76dbe80
SDL_Surface has been simplified and internal details are no longer in the public structure. The `format` member of SDL_Surface is now an enumerated pixel format value. You can get the full details of the pixel format by calling `SDL_GetPixelFormatDetails(surface->format)`. You can get the palette associated with the surface by calling SDL_GetSurfacePalette(). You can get the clip rectangle by calling SDL_GetSurfaceClipRect(). SDL_PixelFormat has been renamed SDL_PixelFormatDetails and just describes the pixel format, it does not include a palette for indexed pixel types. SDL_PixelFormatEnum has been renamed SDL_PixelFormat and is used instead of Uint32 for API functions that refer to pixel format by enumerated value. SDL_MapRGB(), SDL_MapRGBA(), SDL_GetRGB(), and SDL_GetRGBA() take an optional palette parameter for indexed color lookups.
364 lines
9.3 KiB
C
364 lines
9.3 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2024 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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#include "SDL_blit.h"
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#ifdef SDL_SSE_INTRINSICS
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/* *INDENT-OFF* */ /* clang-format off */
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#if defined(_MSC_VER) && !defined(__clang__)
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#define SSE_BEGIN \
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__m128 c128; \
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c128.m128_u32[0] = color; \
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c128.m128_u32[1] = color; \
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c128.m128_u32[2] = color; \
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c128.m128_u32[3] = color;
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#else
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#define SSE_BEGIN \
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__m128 c128; \
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DECLARE_ALIGNED(Uint32, cccc[4], 16); \
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cccc[0] = color; \
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cccc[1] = color; \
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cccc[2] = color; \
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cccc[3] = color; \
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c128 = *(__m128 *)cccc;
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#endif
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#define SSE_WORK \
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for (i = n / 64; i--;) { \
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_mm_stream_ps((float *)(p+0), c128); \
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_mm_stream_ps((float *)(p+16), c128); \
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_mm_stream_ps((float *)(p+32), c128); \
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_mm_stream_ps((float *)(p+48), c128); \
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p += 64; \
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}
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#define SSE_END
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#define DEFINE_SSE_FILLRECT(bpp, type) \
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static void SDL_TARGETING("sse") SDL_FillSurfaceRect##bpp##SSE(Uint8 *pixels, int pitch, Uint32 color, int w, int h) \
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{ \
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int i, n; \
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Uint8 *p = NULL; \
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\
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SSE_BEGIN; \
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\
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while (h--) { \
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n = (w) * (bpp); \
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p = pixels; \
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\
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if (n > 63) { \
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int adjust = 16 - ((uintptr_t)p & 15); \
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if (adjust < 16) { \
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n -= adjust; \
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adjust /= (bpp); \
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while (adjust--) { \
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*((type *)p) = (type)color; \
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p += (bpp); \
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} \
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} \
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SSE_WORK; \
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} \
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if (n & 63) { \
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int remainder = (n & 63); \
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remainder /= (bpp); \
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while (remainder--) { \
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*((type *)p) = (type)color; \
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p += (bpp); \
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} \
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} \
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pixels += pitch; \
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} \
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\
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SSE_END; \
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}
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static void SDL_TARGETING("sse") SDL_FillSurfaceRect1SSE(Uint8 *pixels, int pitch, Uint32 color, int w, int h)
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{
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int i, n;
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SSE_BEGIN;
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while (h--) {
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Uint8 *p = pixels;
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n = w;
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if (n > 63) {
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int adjust = 16 - ((uintptr_t)p & 15);
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if (adjust) {
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n -= adjust;
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SDL_memset(p, color, adjust);
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p += adjust;
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}
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SSE_WORK;
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}
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if (n & 63) {
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int remainder = (n & 63);
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SDL_memset(p, color, remainder);
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}
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pixels += pitch;
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}
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SSE_END;
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}
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/* DEFINE_SSE_FILLRECT(1, Uint8) */
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DEFINE_SSE_FILLRECT(2, Uint16)
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DEFINE_SSE_FILLRECT(4, Uint32)
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/* *INDENT-ON* */ /* clang-format on */
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#endif /* __SSE__ */
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static void SDL_FillSurfaceRect1(Uint8 *pixels, int pitch, Uint32 color, int w, int h)
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{
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int n;
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Uint8 *p = NULL;
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while (h--) {
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n = w;
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p = pixels;
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if (n > 3) {
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switch ((uintptr_t)p & 3) {
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case 1:
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*p++ = (Uint8)color;
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--n;
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SDL_FALLTHROUGH;
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case 2:
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*p++ = (Uint8)color;
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--n;
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SDL_FALLTHROUGH;
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case 3:
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*p++ = (Uint8)color;
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--n;
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}
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SDL_memset4(p, color, (n >> 2));
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}
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if (n & 3) {
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p += (n & ~3);
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switch (n & 3) {
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case 3:
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*p++ = (Uint8)color;
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SDL_FALLTHROUGH;
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case 2:
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*p++ = (Uint8)color;
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SDL_FALLTHROUGH;
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case 1:
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*p++ = (Uint8)color;
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}
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}
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pixels += pitch;
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}
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}
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static void SDL_FillSurfaceRect2(Uint8 *pixels, int pitch, Uint32 color, int w, int h)
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{
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int n;
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Uint16 *p = NULL;
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while (h--) {
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n = w;
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p = (Uint16 *)pixels;
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if (n > 1) {
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if ((uintptr_t)p & 2) {
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*p++ = (Uint16)color;
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--n;
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}
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SDL_memset4(p, color, (n >> 1));
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}
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if (n & 1) {
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p[n - 1] = (Uint16)color;
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}
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pixels += pitch;
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}
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}
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static void SDL_FillSurfaceRect3(Uint8 *pixels, int pitch, Uint32 color, int w, int h)
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{
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
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Uint8 b1 = (Uint8)(color & 0xFF);
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Uint8 b2 = (Uint8)((color >> 8) & 0xFF);
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Uint8 b3 = (Uint8)((color >> 16) & 0xFF);
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#elif SDL_BYTEORDER == SDL_BIG_ENDIAN
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Uint8 b1 = (Uint8)((color >> 16) & 0xFF);
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Uint8 b2 = (Uint8)((color >> 8) & 0xFF);
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Uint8 b3 = (Uint8)(color & 0xFF);
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#endif
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int n;
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Uint8 *p = NULL;
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while (h--) {
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n = w;
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p = pixels;
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while (n--) {
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*p++ = b1;
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*p++ = b2;
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*p++ = b3;
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}
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pixels += pitch;
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}
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}
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static void SDL_FillSurfaceRect4(Uint8 *pixels, int pitch, Uint32 color, int w, int h)
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{
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while (h--) {
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SDL_memset4(pixels, color, w);
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pixels += pitch;
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}
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}
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/*
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* This function performs a fast fill of the given rectangle with 'color'
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*/
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int SDL_FillSurfaceRect(SDL_Surface *dst, const SDL_Rect *rect, Uint32 color)
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{
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if (!SDL_SurfaceValid(dst)) {
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return SDL_InvalidParamError("SDL_FillSurfaceRect(): dst");
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}
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/* If 'rect' == NULL, then fill the whole surface */
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if (!rect) {
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rect = &dst->internal->clip_rect;
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/* Don't attempt to fill if the surface's clip_rect is empty */
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if (SDL_RectEmpty(rect)) {
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return 0;
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}
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}
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return SDL_FillSurfaceRects(dst, rect, 1, color);
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}
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int SDL_FillSurfaceRects(SDL_Surface *dst, const SDL_Rect *rects, int count,
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Uint32 color)
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{
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SDL_Rect clipped;
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Uint8 *pixels;
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const SDL_Rect *rect;
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void (*fill_function)(Uint8 * pixels, int pitch, Uint32 color, int w, int h) = NULL;
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int i;
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if (!SDL_SurfaceValid(dst)) {
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return SDL_InvalidParamError("SDL_FillSurfaceRects(): dst");
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}
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/* Nothing to do */
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if (dst->w == 0 || dst->h == 0) {
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return 0;
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}
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/* Perform software fill */
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if (!dst->pixels) {
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return SDL_SetError("SDL_FillSurfaceRects(): You must lock the surface");
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}
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if (!rects) {
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return SDL_InvalidParamError("SDL_FillSurfaceRects(): rects");
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}
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/* This function doesn't usually work on surfaces < 8 bpp
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* Except: support for 4bits, when filling full size.
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*/
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if (SDL_BITSPERPIXEL(dst->format) < 8) {
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if (count == 1) {
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const SDL_Rect *r = &rects[0];
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if (r->x == 0 && r->y == 0 && r->w == dst->w && r->h == dst->h) {
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if (SDL_BITSPERPIXEL(dst->format) == 4) {
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Uint8 b = (((Uint8)color << 4) | (Uint8)color);
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SDL_memset(dst->pixels, b, (size_t)dst->h * dst->pitch);
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return 1;
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}
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}
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}
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return SDL_SetError("SDL_FillSurfaceRects(): Unsupported surface format");
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}
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if (fill_function == NULL) {
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switch (SDL_BYTESPERPIXEL(dst->format)) {
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case 1:
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{
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color |= (color << 8);
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color |= (color << 16);
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#ifdef SDL_SSE_INTRINSICS
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if (SDL_HasSSE()) {
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fill_function = SDL_FillSurfaceRect1SSE;
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break;
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}
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#endif
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fill_function = SDL_FillSurfaceRect1;
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break;
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}
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case 2:
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{
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color |= (color << 16);
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#ifdef SDL_SSE_INTRINSICS
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if (SDL_HasSSE()) {
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fill_function = SDL_FillSurfaceRect2SSE;
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break;
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}
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#endif
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fill_function = SDL_FillSurfaceRect2;
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break;
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}
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case 3:
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/* 24-bit RGB is a slow path, at least for now. */
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{
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fill_function = SDL_FillSurfaceRect3;
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break;
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}
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case 4:
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{
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#ifdef SDL_SSE_INTRINSICS
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if (SDL_HasSSE()) {
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fill_function = SDL_FillSurfaceRect4SSE;
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break;
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}
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#endif
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fill_function = SDL_FillSurfaceRect4;
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break;
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}
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default:
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return SDL_SetError("Unsupported pixel format");
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}
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}
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for (i = 0; i < count; ++i) {
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rect = &rects[i];
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/* Perform clipping */
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if (!SDL_GetRectIntersection(rect, &dst->internal->clip_rect, &clipped)) {
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continue;
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}
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rect = &clipped;
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pixels = (Uint8 *)dst->pixels + rect->y * dst->pitch +
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rect->x * SDL_BYTESPERPIXEL(dst->format);
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fill_function(pixels, dst->pitch, color, rect->w, rect->h);
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}
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/* We're done! */
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return 0;
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}
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