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Added automated test to Xcode project plus needed changes to SDL_RWFromFile to be OS X bundle aware. The Mac OS X project has a new target called testsdl which builds the automated test. I looked at using Xcode's native unit test support, but the impedance mismatch between the existing automated test structure and Apple's was more than I could handle. As such, the testsdl application is a full blown proper OS X application, which means it is a self-contained .app bundle. This immediately revealed some problems from the automated test. The largest problem was the assumption about the current working directory and where to find resources. (I suspect Windows may have a similar problem depending on circumstance.) To open resources, the test was looking in directories relative to the SDL source directory, but this will not work well with self-contained .app bundles and Xcode which can place its built applications almost anywhere. And for real-world situations, this is pretty useless anyway. So I modified SDL_RWFromFile to do special things on OS X. First, it will look for a file in the .app bundle. If not found, it will fallback and just call fopen as it used to do. I also had to modify the automated test itself because it had a contrieved test which called fopen directly to do read from an existing FILE pointer. In addition, there was a write test. Since a .app bundle is likely going to be read-only, I added a special case for OS X to write to NSTemporaryDirectory. I expect these changes should work for both Mac and iPhone OS (which includes iPad). I will update the iPhone Xcode project next. Finally, FYI, the X11 automated test seems to be failing. Below is my output. Pending breakpoint 4 - "-[NSException raise]" resolved Platform : All tests successful (2) SDL_RWops : All tests successful (5) Rect : All tests successful (1) SDL_Surface : All tests successful (6) Rendering with cocoa driver : All tests successful (3) Assert Failed! Blit output not the same. Test Case 'Renderer x11' Test Suite 'Rendering with x11 driver' Last SDL error '' Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged. Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetWindowBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSGetSurfaceBounds Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Sat May 8 00:30:34 iMacAL.local testsdl[71586] <Error>: kCGErrorIllegalArgument: CGSBindSurface: Invalid window 0xa150 Rendering with x11 driver : Failed 1 out of 4 testcases! Rendering with dummy driver : All tests successful (3) SDL_Audio : All tests successful (1) Tests run with SDL 1.3.0 revision 1095906 System is running Mac OS X and is little endian
author Eric Wing <ewing . public |-at-| gmail . com>
date Sat, 08 May 2010 00:54:22 -0700
parents f7b03b6838cb
children aa8888658021
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2010 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga
    slouken@libsdl.org
*/
#include "SDL_config.h"

#include "SDL_draw.h"


static void
SDL_BlendLine_RGB2(SDL_Surface * dst, int x1, int y1, int x2, int y2,
                   int blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
                   SDL_bool draw_end)
{
    const SDL_PixelFormat *fmt = dst->format;
    unsigned r, g, b, a, inva;

    if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
        r = DRAW_MUL(_r, _a);
        g = DRAW_MUL(_g, _a);
        b = DRAW_MUL(_b, _a);
        a = _a;
    } else {
        r = _r;
        g = _g;
        b = _b;
        a = _a;
    }
    inva = (a ^ 0xff);

    if (y1 == y2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            HLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            HLINE(Uint16, DRAW_SETPIXEL_ADD_RGB, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            HLINE(Uint16, DRAW_SETPIXEL_MOD_RGB, draw_end);
            break;
        default:
            HLINE(Uint16, DRAW_SETPIXEL_RGB, draw_end);
            break;
        }
    } else if (x1 == x2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            VLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            VLINE(Uint16, DRAW_SETPIXEL_ADD_RGB, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            VLINE(Uint16, DRAW_SETPIXEL_MOD_RGB, draw_end);
            break;
        default:
            VLINE(Uint16, DRAW_SETPIXEL_RGB, draw_end);
            break;
        }
    } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            DLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            DLINE(Uint16, DRAW_SETPIXEL_ADD_RGB, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            DLINE(Uint16, DRAW_SETPIXEL_MOD_RGB, draw_end);
            break;
        default:
            DLINE(Uint16, DRAW_SETPIXEL_RGB, draw_end);
            break;
        }
    } else {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY2_BLEND_RGB, DRAW_SETPIXELXY2_BLEND_RGB,
                   draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY2_ADD_RGB, DRAW_SETPIXELXY2_ADD_RGB,
                   draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY2_MOD_RGB, DRAW_SETPIXELXY2_MOD_RGB,
                   draw_end);
            break;
        default:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY2_RGB, DRAW_SETPIXELXY2_BLEND_RGB,
                   draw_end);
            break;
        }
    }
}

static void
SDL_BlendLine_RGB555(SDL_Surface * dst, int x1, int y1, int x2, int y2,
                     int blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
                     SDL_bool draw_end)
{
    const SDL_PixelFormat *fmt = dst->format;
    unsigned r, g, b, a, inva;

    if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
        r = DRAW_MUL(_r, _a);
        g = DRAW_MUL(_g, _a);
        b = DRAW_MUL(_b, _a);
        a = _a;
    } else {
        r = _r;
        g = _g;
        b = _b;
        a = _a;
    }
    inva = (a ^ 0xff);

    if (y1 == y2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            HLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB555, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            HLINE(Uint16, DRAW_SETPIXEL_ADD_RGB555, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            HLINE(Uint16, DRAW_SETPIXEL_MOD_RGB555, draw_end);
            break;
        default:
            HLINE(Uint16, DRAW_SETPIXEL_RGB555, draw_end);
            break;
        }
    } else if (x1 == x2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            VLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB555, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            VLINE(Uint16, DRAW_SETPIXEL_ADD_RGB555, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            VLINE(Uint16, DRAW_SETPIXEL_MOD_RGB555, draw_end);
            break;
        default:
            VLINE(Uint16, DRAW_SETPIXEL_RGB555, draw_end);
            break;
        }
    } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            DLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB555, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            DLINE(Uint16, DRAW_SETPIXEL_ADD_RGB555, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            DLINE(Uint16, DRAW_SETPIXEL_MOD_RGB555, draw_end);
            break;
        default:
            DLINE(Uint16, DRAW_SETPIXEL_RGB555, draw_end);
            break;
        }
    } else {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_BLEND_RGB555, DRAW_SETPIXELXY_BLEND_RGB555,
                   draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_ADD_RGB555, DRAW_SETPIXELXY_ADD_RGB555,
                   draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_MOD_RGB555, DRAW_SETPIXELXY_MOD_RGB555,
                   draw_end);
            break;
        default:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_RGB555, DRAW_SETPIXELXY_BLEND_RGB555,
                   draw_end);
            break;
        }
    }
}

static void
SDL_BlendLine_RGB565(SDL_Surface * dst, int x1, int y1, int x2, int y2,
                     int blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
                     SDL_bool draw_end)
{
    const SDL_PixelFormat *fmt = dst->format;
    unsigned r, g, b, a, inva;

    if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
        r = DRAW_MUL(_r, _a);
        g = DRAW_MUL(_g, _a);
        b = DRAW_MUL(_b, _a);
        a = _a;
    } else {
        r = _r;
        g = _g;
        b = _b;
        a = _a;
    }
    inva = (a ^ 0xff);

    if (y1 == y2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            HLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB565, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            HLINE(Uint16, DRAW_SETPIXEL_ADD_RGB565, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            HLINE(Uint16, DRAW_SETPIXEL_MOD_RGB565, draw_end);
            break;
        default:
            HLINE(Uint16, DRAW_SETPIXEL_RGB565, draw_end);
            break;
        }
    } else if (x1 == x2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            VLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB565, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            VLINE(Uint16, DRAW_SETPIXEL_ADD_RGB565, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            VLINE(Uint16, DRAW_SETPIXEL_MOD_RGB565, draw_end);
            break;
        default:
            VLINE(Uint16, DRAW_SETPIXEL_RGB565, draw_end);
            break;
        }
    } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            DLINE(Uint16, DRAW_SETPIXEL_BLEND_RGB565, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            DLINE(Uint16, DRAW_SETPIXEL_ADD_RGB565, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            DLINE(Uint16, DRAW_SETPIXEL_MOD_RGB565, draw_end);
            break;
        default:
            DLINE(Uint16, DRAW_SETPIXEL_RGB565, draw_end);
            break;
        }
    } else {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_BLEND_RGB565, DRAW_SETPIXELXY_BLEND_RGB565,
                   draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_ADD_RGB565, DRAW_SETPIXELXY_ADD_RGB565,
                   draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_MOD_RGB565, DRAW_SETPIXELXY_MOD_RGB565,
                   draw_end);
            break;
        default:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_RGB565, DRAW_SETPIXELXY_BLEND_RGB565,
                   draw_end);
            break;
        }
    }
}

static void
SDL_BlendLine_RGB4(SDL_Surface * dst, int x1, int y1, int x2, int y2,
                   int blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
                   SDL_bool draw_end)
{
    const SDL_PixelFormat *fmt = dst->format;
    unsigned r, g, b, a, inva;

    if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
        r = DRAW_MUL(_r, _a);
        g = DRAW_MUL(_g, _a);
        b = DRAW_MUL(_b, _a);
        a = _a;
    } else {
        r = _r;
        g = _g;
        b = _b;
        a = _a;
    }
    inva = (a ^ 0xff);

    if (y1 == y2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            HLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            HLINE(Uint32, DRAW_SETPIXEL_ADD_RGB, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            HLINE(Uint32, DRAW_SETPIXEL_MOD_RGB, draw_end);
            break;
        default:
            HLINE(Uint32, DRAW_SETPIXEL_RGB, draw_end);
            break;
        }
    } else if (x1 == x2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            VLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            VLINE(Uint32, DRAW_SETPIXEL_ADD_RGB, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            VLINE(Uint32, DRAW_SETPIXEL_MOD_RGB, draw_end);
            break;
        default:
            VLINE(Uint32, DRAW_SETPIXEL_RGB, draw_end);
            break;
        }
    } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            DLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            DLINE(Uint32, DRAW_SETPIXEL_ADD_RGB, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            DLINE(Uint32, DRAW_SETPIXEL_MOD_RGB, draw_end);
            break;
        default:
            DLINE(Uint32, DRAW_SETPIXEL_RGB, draw_end);
            break;
        }
    } else {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY4_BLEND_RGB, DRAW_SETPIXELXY4_BLEND_RGB,
                   draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY4_ADD_RGB, DRAW_SETPIXELXY4_ADD_RGB,
                   draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY4_MOD_RGB, DRAW_SETPIXELXY4_MOD_RGB,
                   draw_end);
            break;
        default:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY4_RGB, DRAW_SETPIXELXY4_BLEND_RGB,
                   draw_end);
            break;
        }
    }
}

static void
SDL_BlendLine_RGBA4(SDL_Surface * dst, int x1, int y1, int x2, int y2,
                    int blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
                    SDL_bool draw_end)
{
    const SDL_PixelFormat *fmt = dst->format;
    unsigned r, g, b, a, inva;

    if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
        r = DRAW_MUL(_r, _a);
        g = DRAW_MUL(_g, _a);
        b = DRAW_MUL(_b, _a);
        a = _a;
    } else {
        r = _r;
        g = _g;
        b = _b;
        a = _a;
    }
    inva = (a ^ 0xff);

    if (y1 == y2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            HLINE(Uint32, DRAW_SETPIXEL_BLEND_RGBA, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            HLINE(Uint32, DRAW_SETPIXEL_ADD_RGBA, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            HLINE(Uint32, DRAW_SETPIXEL_MOD_RGBA, draw_end);
            break;
        default:
            HLINE(Uint32, DRAW_SETPIXEL_RGBA, draw_end);
            break;
        }
    } else if (x1 == x2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            VLINE(Uint32, DRAW_SETPIXEL_BLEND_RGBA, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            VLINE(Uint32, DRAW_SETPIXEL_ADD_RGBA, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            VLINE(Uint32, DRAW_SETPIXEL_MOD_RGBA, draw_end);
            break;
        default:
            VLINE(Uint32, DRAW_SETPIXEL_RGBA, draw_end);
            break;
        }
    } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            DLINE(Uint32, DRAW_SETPIXEL_BLEND_RGBA, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            DLINE(Uint32, DRAW_SETPIXEL_ADD_RGBA, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            DLINE(Uint32, DRAW_SETPIXEL_MOD_RGBA, draw_end);
            break;
        default:
            DLINE(Uint32, DRAW_SETPIXEL_RGBA, draw_end);
            break;
        }
    } else {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY4_BLEND_RGBA, DRAW_SETPIXELXY4_BLEND_RGBA,
                   draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY4_ADD_RGBA, DRAW_SETPIXELXY4_ADD_RGBA,
                   draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY4_MOD_RGBA, DRAW_SETPIXELXY4_MOD_RGBA,
                   draw_end);
            break;
        default:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY4_RGBA, DRAW_SETPIXELXY4_BLEND_RGBA,
                   draw_end);
            break;
        }
    }
}

static void
SDL_BlendLine_RGB888(SDL_Surface * dst, int x1, int y1, int x2, int y2,
                     int blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
                     SDL_bool draw_end)
{
    const SDL_PixelFormat *fmt = dst->format;
    unsigned r, g, b, a, inva;

    if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
        r = DRAW_MUL(_r, _a);
        g = DRAW_MUL(_g, _a);
        b = DRAW_MUL(_b, _a);
        a = _a;
    } else {
        r = _r;
        g = _g;
        b = _b;
        a = _a;
    }
    inva = (a ^ 0xff);

    if (y1 == y2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            HLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB888, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            HLINE(Uint32, DRAW_SETPIXEL_ADD_RGB888, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            HLINE(Uint32, DRAW_SETPIXEL_MOD_RGB888, draw_end);
            break;
        default:
            HLINE(Uint32, DRAW_SETPIXEL_RGB888, draw_end);
            break;
        }
    } else if (x1 == x2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            VLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB888, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            VLINE(Uint32, DRAW_SETPIXEL_ADD_RGB888, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            VLINE(Uint32, DRAW_SETPIXEL_MOD_RGB888, draw_end);
            break;
        default:
            VLINE(Uint32, DRAW_SETPIXEL_RGB888, draw_end);
            break;
        }
    } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            DLINE(Uint32, DRAW_SETPIXEL_BLEND_RGB888, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            DLINE(Uint32, DRAW_SETPIXEL_ADD_RGB888, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            DLINE(Uint32, DRAW_SETPIXEL_MOD_RGB888, draw_end);
            break;
        default:
            DLINE(Uint32, DRAW_SETPIXEL_RGB888, draw_end);
            break;
        }
    } else {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_BLEND_RGB888, DRAW_SETPIXELXY_BLEND_RGB888,
                   draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_ADD_RGB888, DRAW_SETPIXELXY_ADD_RGB888,
                   draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_MOD_RGB888, DRAW_SETPIXELXY_MOD_RGB888,
                   draw_end);
            break;
        default:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_RGB888, DRAW_SETPIXELXY_BLEND_RGB888,
                   draw_end);
            break;
        }
    }
}

static void
SDL_BlendLine_ARGB8888(SDL_Surface * dst, int x1, int y1, int x2, int y2,
                       int blendMode, Uint8 _r, Uint8 _g, Uint8 _b, Uint8 _a,
                       SDL_bool draw_end)
{
    const SDL_PixelFormat *fmt = dst->format;
    unsigned r, g, b, a, inva;

    if (blendMode == SDL_BLENDMODE_BLEND || blendMode == SDL_BLENDMODE_ADD) {
        r = DRAW_MUL(_r, _a);
        g = DRAW_MUL(_g, _a);
        b = DRAW_MUL(_b, _a);
        a = _a;
    } else {
        r = _r;
        g = _g;
        b = _b;
        a = _a;
    }
    inva = (a ^ 0xff);

    if (y1 == y2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            HLINE(Uint32, DRAW_SETPIXEL_BLEND_ARGB8888, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            HLINE(Uint32, DRAW_SETPIXEL_ADD_ARGB8888, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            HLINE(Uint32, DRAW_SETPIXEL_MOD_ARGB8888, draw_end);
            break;
        default:
            HLINE(Uint32, DRAW_SETPIXEL_ARGB8888, draw_end);
            break;
        }
    } else if (x1 == x2) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            VLINE(Uint32, DRAW_SETPIXEL_BLEND_ARGB8888, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            VLINE(Uint32, DRAW_SETPIXEL_ADD_ARGB8888, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            VLINE(Uint32, DRAW_SETPIXEL_MOD_ARGB8888, draw_end);
            break;
        default:
            VLINE(Uint32, DRAW_SETPIXEL_ARGB8888, draw_end);
            break;
        }
    } else if (ABS(x1 - x2) == ABS(y1 - y2)) {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            DLINE(Uint32, DRAW_SETPIXEL_BLEND_ARGB8888, draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            DLINE(Uint32, DRAW_SETPIXEL_ADD_ARGB8888, draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            DLINE(Uint32, DRAW_SETPIXEL_MOD_ARGB8888, draw_end);
            break;
        default:
            DLINE(Uint32, DRAW_SETPIXEL_ARGB8888, draw_end);
            break;
        }
    } else {
        switch (blendMode) {
        case SDL_BLENDMODE_BLEND:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_BLEND_ARGB8888, DRAW_SETPIXELXY_BLEND_ARGB8888,
                   draw_end);
            break;
        case SDL_BLENDMODE_ADD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_ADD_ARGB8888, DRAW_SETPIXELXY_ADD_ARGB8888,
                   draw_end);
            break;
        case SDL_BLENDMODE_MOD:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_MOD_ARGB8888, DRAW_SETPIXELXY_MOD_ARGB8888,
                   draw_end);
            break;
        default:
            AALINE(x1, y1, x2, y2,
                   DRAW_SETPIXELXY_ARGB8888, DRAW_SETPIXELXY_BLEND_ARGB8888,
                   draw_end);
            break;
        }
    }
}

typedef void (*BlendLineFunc) (SDL_Surface * dst,
                               int x1, int y1, int x2, int y2,
                               int blendMode,
                               Uint8 r, Uint8 g, Uint8 b, Uint8 a,
                               SDL_bool draw_end);

static BlendLineFunc
SDL_CalculateBlendLineFunc(const SDL_PixelFormat * fmt)
{
    switch (fmt->BytesPerPixel) {
    case 2:
        if (fmt->Rmask == 0x7C00) {
            return SDL_BlendLine_RGB555;
        } else if (fmt->Rmask == 0xF800) {
            return SDL_BlendLine_RGB565;
        } else {
            return SDL_BlendLine_RGB2;
        }
        break;
    case 4:
        if (fmt->Rmask == 0x00FF0000) {
            if (fmt->Amask) {
                return SDL_BlendLine_ARGB8888;
            } else {
                return SDL_BlendLine_RGB888;
            }
        } else {
            if (fmt->Amask) {
                return SDL_BlendLine_RGBA4;
            } else {
                return SDL_BlendLine_RGB4;
            }
        }
    }
    return NULL;
}

int
SDL_BlendLine(SDL_Surface * dst, int x1, int y1, int x2, int y2,
              int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
    BlendLineFunc func;

    if (!dst) {
        SDL_SetError("SDL_BlendLine(): Passed NULL destination surface");
        return -1;
    }

    func = SDL_CalculateBlendLineFunc(dst->format);
    if (!func) {
        SDL_SetError("SDL_BlendLine(): Unsupported surface format");
        return -1;
    }

    /* Perform clipping */
    /* FIXME: We don't actually want to clip, as it may change line slope */
    if (!SDL_IntersectRectAndLine(&dst->clip_rect, &x1, &y1, &x2, &y2)) {
        return 0;
    }

    func(dst, x1, y1, x2, y2, blendMode, r, g, b, a, SDL_TRUE);
    return 0;
}

int
SDL_BlendLines(SDL_Surface * dst, const SDL_Point * points, int count,
               int blendMode, Uint8 r, Uint8 g, Uint8 b, Uint8 a)
{
    int i;
    int x1, y1;
    int x2, y2;
    SDL_bool draw_end;
    BlendLineFunc func;

    if (!dst) {
        SDL_SetError("SDL_BlendLines(): Passed NULL destination surface");
        return -1;
    }

    func = SDL_CalculateBlendLineFunc(dst->format);
    if (!func) {
        SDL_SetError("SDL_BlendLines(): Unsupported surface format");
        return -1;
    }

    for (i = 1; i < count; ++i) {
        x1 = points[i-1].x;
        y1 = points[i-1].y;
        x2 = points[i].x;
        y2 = points[i].y;

        /* Perform clipping */
        /* FIXME: We don't actually want to clip, as it may change line slope */
        if (!SDL_IntersectRectAndLine(&dst->clip_rect, &x1, &y1, &x2, &y2)) {
            continue;
        }

        /* Draw the end if it was clipped */
        draw_end = (x2 != points[i].x || y2 != points[i].y);

        func(dst, x1, y1, x2, y2, blendMode, r, g, b, a, draw_end);
    }
    if (points[0].x != points[count-1].x || points[0].y != points[count-1].y) {
        SDL_BlendPoint(dst, points[count-1].x, points[count-1].y,
                       blendMode, r, g, b, a);
    }
    return 0;
}

/* vi: set ts=4 sw=4 expandtab: */