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authorAndrei Karas <akaras@inbox.ru>2017-06-02 20:26:43 +0300
committerAndrei Karas <akaras@inbox.ru>2017-06-03 23:53:31 +0300
commit8340a5b04420d2c456618245371cc6e268e5fa5d (patch)
tree5820375efeb8f522aaa9dd175300715883d20b46 /src/resources
parent4b41e05deeef6927863601205dd7a0b5563e803a (diff)
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Add custom image to image blit function based on fuction from sdl_gfx SDL_gfxBlitRGBA.
Diffstat (limited to 'src/resources')
-rw-r--r--src/resources/sdlgfxblitfunc.cpp537
-rw-r--r--src/resources/sdlgfxblitfunc.h42
-rw-r--r--src/resources/sdlimagehelper.cpp16
-rw-r--r--src/resources/sdlimagehelper_unittest.cc78
4 files changed, 671 insertions, 2 deletions
diff --git a/src/resources/sdlgfxblitfunc.cpp b/src/resources/sdlgfxblitfunc.cpp
new file mode 100644
index 000000000..77c67bbc4
--- /dev/null
+++ b/src/resources/sdlgfxblitfunc.cpp
@@ -0,0 +1,537 @@
+/*
+ * The ManaPlus Client
+ * Copyright (C) 2017 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+
+SDL_gfxBlitFunc: custom blitters (part of SDL_gfx library)
+
+LGPL (c) A. Schiffler
+
+*/
+
+#ifndef USE_SDL2
+#include "resources/sdlgfxblitfunc.h"
+
+#include "utils/checkutils.h"
+
+#include <SDL.h>
+#include <SDL_video.h>
+
+#include "debug.h"
+
+#define GFX_DUFFS_LOOP4(pixel_copy_increment, width) \
+ int n = (width+3)/4; \
+ switch (width & 3) \
+ { \
+ case 0: do { \
+ pixel_copy_increment; \
+ case 3: pixel_copy_increment; \
+ case 2: pixel_copy_increment; \
+ case 1: pixel_copy_increment; \
+ default: ; \
+ } while (--n > 0 ); \
+ }
+
+namespace
+{
+ typedef struct
+ {
+ Uint8 *s_pixels;
+ int s_width;
+ int s_height;
+ int s_skip;
+ Uint8 *d_pixels;
+ int d_width;
+ int d_height;
+ int d_skip;
+ void *aux_data;
+ SDL_PixelFormat *src;
+ Uint8 *table;
+ SDL_PixelFormat *dst;
+ } SDL_gfxBlitInfo;
+
+ static unsigned int GFX_ALPHA_ADJUST_ARRAY[256] =
+ {
+ 0, /* 0 */
+ 15, /* 1 */
+ 22, /* 2 */
+ 27, /* 3 */
+ 31, /* 4 */
+ 35, /* 5 */
+ 39, /* 6 */
+ 42, /* 7 */
+ 45, /* 8 */
+ 47, /* 9 */
+ 50, /* 10 */
+ 52, /* 11 */
+ 55, /* 12 */
+ 57, /* 13 */
+ 59, /* 14 */
+ 61, /* 15 */
+ 63, /* 16 */
+ 65, /* 17 */
+ 67, /* 18 */
+ 69, /* 19 */
+ 71, /* 20 */
+ 73, /* 21 */
+ 74, /* 22 */
+ 76, /* 23 */
+ 78, /* 24 */
+ 79, /* 25 */
+ 81, /* 26 */
+ 82, /* 27 */
+ 84, /* 28 */
+ 85, /* 29 */
+ 87, /* 30 */
+ 88, /* 31 */
+ 90, /* 32 */
+ 91, /* 33 */
+ 93, /* 34 */
+ 94, /* 35 */
+ 95, /* 36 */
+ 97, /* 37 */
+ 98, /* 38 */
+ 99, /* 39 */
+ 100, /* 40 */
+ 102, /* 41 */
+ 103, /* 42 */
+ 104, /* 43 */
+ 105, /* 44 */
+ 107, /* 45 */
+ 108, /* 46 */
+ 109, /* 47 */
+ 110, /* 48 */
+ 111, /* 49 */
+ 112, /* 50 */
+ 114, /* 51 */
+ 115, /* 52 */
+ 116, /* 53 */
+ 117, /* 54 */
+ 118, /* 55 */
+ 119, /* 56 */
+ 120, /* 57 */
+ 121, /* 58 */
+ 122, /* 59 */
+ 123, /* 60 */
+ 124, /* 61 */
+ 125, /* 62 */
+ 126, /* 63 */
+ 127, /* 64 */
+ 128, /* 65 */
+ 129, /* 66 */
+ 130, /* 67 */
+ 131, /* 68 */
+ 132, /* 69 */
+ 133, /* 70 */
+ 134, /* 71 */
+ 135, /* 72 */
+ 136, /* 73 */
+ 137, /* 74 */
+ 138, /* 75 */
+ 139, /* 76 */
+ 140, /* 77 */
+ 141, /* 78 */
+ 141, /* 79 */
+ 142, /* 80 */
+ 143, /* 81 */
+ 144, /* 82 */
+ 145, /* 83 */
+ 146, /* 84 */
+ 147, /* 85 */
+ 148, /* 86 */
+ 148, /* 87 */
+ 149, /* 88 */
+ 150, /* 89 */
+ 151, /* 90 */
+ 152, /* 91 */
+ 153, /* 92 */
+ 153, /* 93 */
+ 154, /* 94 */
+ 155, /* 95 */
+ 156, /* 96 */
+ 157, /* 97 */
+ 158, /* 98 */
+ 158, /* 99 */
+ 159, /* 100 */
+ 160, /* 101 */
+ 161, /* 102 */
+ 162, /* 103 */
+ 162, /* 104 */
+ 163, /* 105 */
+ 164, /* 106 */
+ 165, /* 107 */
+ 165, /* 108 */
+ 166, /* 109 */
+ 167, /* 110 */
+ 168, /* 111 */
+ 168, /* 112 */
+ 169, /* 113 */
+ 170, /* 114 */
+ 171, /* 115 */
+ 171, /* 116 */
+ 172, /* 117 */
+ 173, /* 118 */
+ 174, /* 119 */
+ 174, /* 120 */
+ 175, /* 121 */
+ 176, /* 122 */
+ 177, /* 123 */
+ 177, /* 124 */
+ 178, /* 125 */
+ 179, /* 126 */
+ 179, /* 127 */
+ 180, /* 128 */
+ 181, /* 129 */
+ 182, /* 130 */
+ 182, /* 131 */
+ 183, /* 132 */
+ 184, /* 133 */
+ 184, /* 134 */
+ 185, /* 135 */
+ 186, /* 136 */
+ 186, /* 137 */
+ 187, /* 138 */
+ 188, /* 139 */
+ 188, /* 140 */
+ 189, /* 141 */
+ 190, /* 142 */
+ 190, /* 143 */
+ 191, /* 144 */
+ 192, /* 145 */
+ 192, /* 146 */
+ 193, /* 147 */
+ 194, /* 148 */
+ 194, /* 149 */
+ 195, /* 150 */
+ 196, /* 151 */
+ 196, /* 152 */
+ 197, /* 153 */
+ 198, /* 154 */
+ 198, /* 155 */
+ 199, /* 156 */
+ 200, /* 157 */
+ 200, /* 158 */
+ 201, /* 159 */
+ 201, /* 160 */
+ 202, /* 161 */
+ 203, /* 162 */
+ 203, /* 163 */
+ 204, /* 164 */
+ 205, /* 165 */
+ 205, /* 166 */
+ 206, /* 167 */
+ 206, /* 168 */
+ 207, /* 169 */
+ 208, /* 170 */
+ 208, /* 171 */
+ 209, /* 172 */
+ 210, /* 173 */
+ 210, /* 174 */
+ 211, /* 175 */
+ 211, /* 176 */
+ 212, /* 177 */
+ 213, /* 178 */
+ 213, /* 179 */
+ 214, /* 180 */
+ 214, /* 181 */
+ 215, /* 182 */
+ 216, /* 183 */
+ 216, /* 184 */
+ 217, /* 185 */
+ 217, /* 186 */
+ 218, /* 187 */
+ 218, /* 188 */
+ 219, /* 189 */
+ 220, /* 190 */
+ 220, /* 191 */
+ 221, /* 192 */
+ 221, /* 193 */
+ 222, /* 194 */
+ 222, /* 195 */
+ 223, /* 196 */
+ 224, /* 197 */
+ 224, /* 198 */
+ 225, /* 199 */
+ 225, /* 200 */
+ 226, /* 201 */
+ 226, /* 202 */
+ 227, /* 203 */
+ 228, /* 204 */
+ 228, /* 205 */
+ 229, /* 206 */
+ 229, /* 207 */
+ 230, /* 208 */
+ 230, /* 209 */
+ 231, /* 210 */
+ 231, /* 211 */
+ 232, /* 212 */
+ 233, /* 213 */
+ 233, /* 214 */
+ 234, /* 215 */
+ 234, /* 216 */
+ 235, /* 217 */
+ 235, /* 218 */
+ 236, /* 219 */
+ 236, /* 220 */
+ 237, /* 221 */
+ 237, /* 222 */
+ 238, /* 223 */
+ 238, /* 224 */
+ 239, /* 225 */
+ 240, /* 226 */
+ 240, /* 227 */
+ 241, /* 228 */
+ 241, /* 229 */
+ 242, /* 230 */
+ 242, /* 231 */
+ 243, /* 232 */
+ 243, /* 233 */
+ 244, /* 234 */
+ 244, /* 235 */
+ 245, /* 236 */
+ 245, /* 237 */
+ 246, /* 238 */
+ 246, /* 239 */
+ 247, /* 240 */
+ 247, /* 241 */
+ 248, /* 242 */
+ 248, /* 243 */
+ 249, /* 244 */
+ 249, /* 245 */
+ 250, /* 246 */
+ 250, /* 247 */
+ 251, /* 248 */
+ 251, /* 249 */
+ 252, /* 250 */
+ 252, /* 251 */
+ 253, /* 252 */
+ 253, /* 253 */
+ 254, /* 254 */
+ 255 /* 255 */
+ };
+}
+
+static void _SDL_gfxBlitBlitterRGBA(SDL_gfxBlitInfo *info)
+{
+ int width = info->d_width;
+ int height = info->d_height;
+ Uint8 *src = info->s_pixels;
+ int srcskip = info->s_skip;
+ Uint8 *dst = info->d_pixels;
+ int dstskip = info->d_skip;
+ SDL_PixelFormat *srcfmt = info->src;
+
+ while (height--)
+ {
+ GFX_DUFFS_LOOP4(
+ {
+ Uint32 pixel;
+ uint32_t sR;
+ uint32_t sG;
+ uint32_t sB;
+ uint32_t sA;
+ uint32_t dR;
+ uint32_t dG;
+ uint32_t dB;
+ uint32_t dA;
+ uint32_t sAA;
+
+ pixel = *(reinterpret_cast<uint32_t *>(src));
+ sR = ((pixel & srcfmt->Rmask) >> srcfmt->Rshift);
+ sG = ((pixel & srcfmt->Gmask) >> srcfmt->Gshift);
+ sB = ((pixel & srcfmt->Bmask) >> srcfmt->Bshift);
+ sA = ((pixel & srcfmt->Amask) >> srcfmt->Ashift);
+
+ pixel = *(reinterpret_cast<uint32_t *>(dst));
+ dR = pixel & 0xff;
+ dG = ((pixel & 0xff00) >> 8);
+ dB = ((pixel & 0xff0000) >> 16);
+ dA = ((pixel & 0xff000000) >> 24);
+
+ sAA = GFX_ALPHA_ADJUST_ARRAY[sA & 255];
+ dR = (((sR - dR) * (sAA)) / 255) + dR;
+ dG = (((sG - dG) * (sAA)) / 255) + dG;
+ dB = (((sB - dB) * (sAA)) / 255) + dB;
+ dA |= sAA;
+
+ *(reinterpret_cast<uint32_t *>(dst)) = dR |
+ (dG << 8) |
+ (dB << 16) |
+ (dA << 24);
+
+ src += 4;
+ dst += 4;
+ }, width);
+ src += srcskip;
+ dst += dstskip;
+ }
+}
+
+static int _SDL_gfxBlitRGBACall(SDL_Surface *src,
+ SDL_Rect *srcrect,
+ SDL_Surface *dst,
+ SDL_Rect *dstrect)
+{
+ /*
+ * Set up source and destination buffer pointers, then blit
+ */
+ if (srcrect->w && srcrect->h)
+ {
+ SDL_gfxBlitInfo info;
+
+ /*
+ * Set up the blit information
+ */
+ info.s_pixels = static_cast<Uint8 *>(src->pixels) + src->offset +
+ static_cast<Uint16>(srcrect->y) * src->pitch +
+ static_cast<Uint16>(srcrect->x) * src->format->BytesPerPixel;
+ info.s_width = srcrect->w;
+ info.s_height = srcrect->h;
+ info.s_skip = CAST_S32(src->pitch - info.s_width *
+ src->format->BytesPerPixel);
+ info.d_pixels = static_cast<Uint8 *>(dst->pixels) + dst->offset +
+ static_cast<Uint16>(dstrect->y) * dst->pitch +
+ static_cast<Uint16>(dstrect->x) * dst->format->BytesPerPixel;
+ info.d_width = dstrect->w;
+ info.d_height = dstrect->h;
+ info.d_skip = CAST_S32(dst->pitch - info.d_width *
+ dst->format->BytesPerPixel);
+ info.aux_data = NULL;
+ info.src = src->format;
+ info.table = NULL;
+ info.dst = dst->format;
+
+ /*
+ * Run the actual software blitter
+ */
+ _SDL_gfxBlitBlitterRGBA(&info);
+ return 1;
+ }
+
+ return (0);
+}
+
+int SDLgfxBlitRGBA(SDL_Surface *src,
+ SDL_Rect *srcrect,
+ SDL_Surface *dst,
+ SDL_Rect *dstrect)
+{
+ SDL_Rect sr;
+ SDL_Rect dr;
+ int srcx;
+ int srcy;
+ int w;
+ int h;
+
+ /*
+ * Make sure the surfaces aren't locked
+ */
+ if (!src || !dst)
+ {
+ reportAlways("SDLgfxBlitRGBA: passed a NULL surface");
+ return -1;
+ }
+
+ /*
+ * If the destination rectangle is NULL, use the entire dest surface
+ */
+ if (dstrect == nullptr)
+ {
+ dr.x = 0;
+ dr.y = 0;
+ dr.w = dst->w;
+ dr.h = dst->h;
+ }
+ else
+ {
+ dr = *dstrect;
+ }
+
+ /*
+ * Clip the source rectangle to the source surface
+ */
+ if (srcrect)
+ {
+ int maxw;
+ int maxh;
+
+ srcx = srcrect->x;
+ w = srcrect->w;
+ maxw = src->w - srcx;
+ if (maxw < w)
+ w = maxw;
+
+ srcy = srcrect->y;
+ h = srcrect->h;
+ maxh = src->h - srcy;
+ if (maxh < h)
+ h = maxh;
+
+ }
+ else
+ {
+ srcx = 0;
+ srcy = 0;
+ w = src->w;
+ h = src->h;
+ }
+
+ /*
+ * Clip the destination rectangle against the clip rectangle
+ */
+ SDL_Rect *clip = &dst->clip_rect;
+ int dx;
+ int dy;
+
+ dx = clip->x - dr.x;
+ if (dx > 0)
+ {
+ w -= dx;
+ dr.x += dx;
+ srcx += dx;
+ }
+ dx = dr.x + w - clip->x - clip->w;
+ if (dx > 0)
+ w -= dx;
+
+ dy = clip->y - dr.y;
+ if (dy > 0)
+ {
+ h -= dy;
+ dr.y += dy;
+ srcy += dy;
+ }
+ dy = dr.y + h - clip->y - clip->h;
+ if (dy > 0)
+ h -= dy;
+
+ if (w > 0 && h > 0)
+ {
+ sr.x = srcx;
+ sr.y = srcy;
+ sr.w = dr.w = w;
+ sr.h = dr.h = h;
+ return _SDL_gfxBlitRGBACall(src, &sr, dst, &dr);
+ }
+
+ return 0;
+}
+
+#endif // USE_SDL2
diff --git a/src/resources/sdlgfxblitfunc.h b/src/resources/sdlgfxblitfunc.h
new file mode 100644
index 000000000..dcf59fdca
--- /dev/null
+++ b/src/resources/sdlgfxblitfunc.h
@@ -0,0 +1,42 @@
+/*
+ * The ManaPlus Client
+ * Copyright (C) 2017 The ManaPlus Developers
+ *
+ * This file is part of The ManaPlus Client.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+
+SDL_gfxBlitFunc: custom blitters (part of SDL_gfx library)
+
+LGPL (c) A. Schiffler
+
+*/
+
+#ifndef RESOURCE_SDLGFXBLITFUNC_H
+#define RESOURCE_SDLGFXBLITFUNC_H
+
+struct SDL_Surface;
+struct SDL_Rect;
+
+// src surface can be any format (most time 32 bit surface with any masks)
+// dst surface always correct 32 sufraces (shared format for all)
+int SDLgfxBlitRGBA(SDL_Surface *src,
+ SDL_Rect *srcrect,
+ SDL_Surface *dst,
+ SDL_Rect *dstrect);
+
+#endif // RESOURCE_SDLGFXBLITFUNC_H
diff --git a/src/resources/sdlimagehelper.cpp b/src/resources/sdlimagehelper.cpp
index bb339ce20..3c1653ca4 100644
--- a/src/resources/sdlimagehelper.cpp
+++ b/src/resources/sdlimagehelper.cpp
@@ -32,15 +32,22 @@
#include "utils/checkutils.h"
#include "utils/sdlcheckutils.h"
-#include <SDL_gfxBlitFunc.h>
#include <SDL_image.h>
-#include "debug.h"
+#include "localconsts.h"
+
+#if SDL_BYTEORDER == SDL_LIL_ENDIAN
+#include "resources/sdlgfxblitfunc.h"
+#else // SDL_BYTEORDER == SDL_LIL_ENDIAN
+#include <SDL_gfxBlitFunc.h>
+#endif // SDL_BYTEORDER == SDL_LIL_ENDIAN
#ifndef SDL_BIG_ENDIAN
#error missing SDL_endian.h
#endif // SDL_BYTEORDER
+#include "debug.h"
+
bool SDLImageHelper::mEnableAlphaCache = false;
Image *SDLImageHelper::load(SDL_RWops *const rw, Dye const &dye)
@@ -289,7 +296,12 @@ int SDLImageHelper::combineSurface(SDL_Surface *restrict const src,
SDL_Surface *restrict const dst,
SDL_Rect *restrict const dstrect)
{
+#if SDL_BYTEORDER == SDL_LIL_ENDIAN
+ return SDLgfxBlitRGBA(src, srcrect, dst, dstrect);
+#else // SDL_BYTEORDER == SDL_LIL_ENDIAN
+
return SDL_gfxBlitRGBA(src, srcrect, dst, dstrect);
+#endif // SDL_BYTEORDER == SDL_LIL_ENDIAN
}
void SDLImageHelper::copySurfaceToImage(const Image *const image,
diff --git a/src/resources/sdlimagehelper_unittest.cc b/src/resources/sdlimagehelper_unittest.cc
index e620a466d..2d4c52e73 100644
--- a/src/resources/sdlimagehelper_unittest.cc
+++ b/src/resources/sdlimagehelper_unittest.cc
@@ -450,6 +450,84 @@ TEST_CASE("sdlimagehelper combineSurface", "")
MSDL_FreeSurface(surface2);
}
+ SECTION("part mix 3")
+ {
+ SDL_Surface *surface1 = createSoftware32BitSurface(4, 4);
+ uint32_t *ptr1 = static_cast<uint32_t*>(surface1->pixels);
+
+ ptr1[0] = 0x10203040;
+ ptr1[1] = 0x20304050;
+ ptr1[2] = 0x30405060;
+ ptr1[3] = 0x708090a0;
+ ptr1[4] = 0x8090a0b0;
+ ptr1[5] = 0x10112233;
+ ptr1[6] = 0x20003344;
+ ptr1[7] = 0x90a0b0c0;
+ ptr1[8] = 0xa0b0c0d0;
+ ptr1[9] = 0x30330055;
+ ptr1[10] = 0x40445500;
+ ptr1[11] = 0xb0c0d0e0;
+ ptr1[12] = 0xc0d0e0f0;
+ ptr1[13] = 0xd0e0f000;
+ ptr1[14] = 0xe0f00010;
+ ptr1[15] = 0xf0001020;
+
+ SDL_Surface *surface2 = createSoftware32BitSurface(4, 4);
+ uint32_t *ptr2 = static_cast<uint32_t*>(surface2->pixels);
+
+ ptr2[0] = 0x50003344;
+ ptr2[1] = 0x60330055;
+ ptr2[2] = 0x70445500;
+ ptr2[3] = 0x80112233;
+ ptr2[4] = 0x90111111;
+ ptr2[5] = 0x90111111;
+ ptr2[6] = 0xff000000;
+ ptr2[7] = 0xff000000;
+ ptr2[8] = 0xff000000;
+ ptr2[9] = 0xff000000;
+ ptr2[10] = 0xff000000;
+ ptr2[11] = 0xff000000;
+ ptr2[12] = 0xff000000;
+ ptr2[13] = 0xff000000;
+ ptr2[14] = 0xff000000;
+ ptr2[15] = 0xff000000;
+
+ SDL_Rect rect1;
+ SDL_Rect rect2;
+ rect1.x = 1;
+ rect1.y = 1;
+ rect1.w = 2;
+ rect1.h = 2;
+ rect2.x = 0;
+ rect2.y = 0;
+ rect2.w = 2;
+ rect2.h = 2;
+ SDLImageHelper::combineSurface(surface2,
+ &rect2,
+ surface1,
+ &rect1);
+
+ REQUIRE(ptr1[0] == 0x10203040);
+ REQUIRE(ptr1[1] == 0x20304050);
+ REQUIRE(ptr1[2] == 0x30405060);
+ REQUIRE(ptr1[3] == 0x708090a0);
+ REQUIRE(ptr1[4] == 0x8090a0b0);
+ REQUIRE(ptr1[5] == 0x9f082b3c);
+ REQUIRE(ptr1[6] == 0xbd1f144e);
+ REQUIRE(ptr1[7] == 0x90a0b0c0);
+ REQUIRE(ptr1[8] == 0xa0b0c0d0);
+ REQUIRE(ptr1[9] == 0xbf1b0d23);
+ REQUIRE(ptr1[10] == 0xff1f230c);
+ REQUIRE(ptr1[11] == 0xb0c0d0e0);
+ REQUIRE(ptr1[12] == 0xc0d0e0f0);
+ REQUIRE(ptr1[13] == 0xd0e0f000);
+ REQUIRE(ptr1[14] == 0xe0f00010);
+ REQUIRE(ptr1[15] == 0xf0001020);
+
+ MSDL_FreeSurface(surface1);
+ MSDL_FreeSurface(surface2);
+ }
+
delete2(client);
VirtFs::unmountDirSilent("data");
VirtFs::unmountDirSilent("../data");