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To: sdl@libsdl.org From: Christian Walther <cwalther@gmx.ch> Date: Fri, 18 Nov 2005 23:39:02 +0100 Subject: [SDL] Mouse position bugs on Mac OS X The attached patch fixes a few bugs in SDL related to the mouse position in windowed mode on Mac OS X, reproduced using the attached minimal test program - at least here on 10.3.9, with SDL CVS from today. Could anyone test whether the bugs exist and are fixed by the patch on 10.2 and 10.4? 1. When using OpenGL, the vertical mouse positions obtained through events or SDL_GetMouseState() are off by one. 2. When using OpenGL, SDL_WarpMouse() inverts the y coordinate. 3. Clicks on the topmost pixel row of the window are not recognized. 1 and 2 do not occur in non-OpenGL mode, while 3 does. All three only occur in windowed mode, not in fullscreen. The cause for 1 and 3 is that in Cocoa, "the location of the mouse" seems to be defined as "the location of the top left corner of the mouse pointer's hot pixel" (this is not documented, it's just what I found out here), which together with the fact that Cocoa's usual y coordinates start at the bottom and increase upwards means that the y coordinate of the mouse runs from 1 to h, not from 0 to h-1, in a window of height h. If it does work on 10.2 and 10.4 (I'll try to test it as soon as I can, but at the moment all I have at hand is 10.3.9), can this be applied to the CVS? -Christian To: sdl@libsdl.org From: Christian Walther <cwalther@gmx.ch> Date: Mon, 28 Nov 2005 10:41:51 +0100 Subject: [SDL] Re: Mouse position bugs on Mac OS X I wrote: > I'll try to test it as soon as I can, but at the moment all I have at hand is 10.3.9 So, here are the results of my tests (with patched and unpatched frameworks compiled with Xcode 1.5 (gcc 3.3) on 10.3.9): On 10.1.5, my test program doesn't run because of "Undefined symbols: SDL undefined reference to _CGMainDisplayID expected to be defined in Carbon". I guess not supporting 10.1 was a deliberate decision then and that's OK with me. On 10.2.8, 10.3.9, and 10.4.0, the bugs exist as described in my original post and are fixed by my patch. That is, there is no difference between pre/post 10.3 and the patched version works correctly in all combinations of GL/non-GL and windowed/fullscreen. I therefore recommend the patch for inclusion. -Christian
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 28 Nov 2005 13:58:26 +0000
parents c94b390687d2
children bb5ace455586
line wrap: on
line source

/*
   Header definitions for the x86 routines for the HERMES library
   Copyright (c) 1998 Christian Nentwich (brn@eleet.mcb.at)
   This source code is licensed under the GNU LGPL
  
   Please refer to the file COPYING.LIB contained in the distribution for
   licensing conditions
*/

#ifndef __HERMES_HEAD_X86__
#define __HERMES_HEAD_X86__


#ifdef X86_ASSEMBLER

/* If you can't stand IFDEFS, then close your eyes now, please :) */

/* Ok, we start with normal function definitions */
#ifdef __cplusplus
extern "C" {
#endif


void STACKCALL ConvertX86(HermesConverterInterface *);
void STACKCALL ClearX86_32(HermesClearInterface *);
void STACKCALL ClearX86_24(HermesClearInterface *);
void STACKCALL ClearX86_16(HermesClearInterface *);
void STACKCALL ClearX86_8(HermesClearInterface *);

int STACKCALL Hermes_X86_CPU();

void ConvertX86p32_32BGR888();
void ConvertX86p32_32RGBA888();
void ConvertX86p32_32BGRA888();
void ConvertX86p32_24RGB888();
void ConvertX86p32_24BGR888();
void ConvertX86p32_16RGB565();
void ConvertX86p32_16BGR565();
void ConvertX86p32_16RGB555();
void ConvertX86p32_16BGR555();
void ConvertX86p32_8RGB332();

void ConvertX86p16_32RGB888();
void ConvertX86p16_32BGR888();
void ConvertX86p16_32RGBA888();
void ConvertX86p16_32BGRA888();
void ConvertX86p16_24RGB888();
void ConvertX86p16_24BGR888();
void ConvertX86p16_16BGR565();
void ConvertX86p16_16RGB555();
void ConvertX86p16_16BGR555();
void ConvertX86p16_8RGB332();

void CopyX86p_4byte();
void CopyX86p_3byte();
void CopyX86p_2byte();
void CopyX86p_1byte();

void ConvertX86pI8_32();
void ConvertX86pI8_24();
void ConvertX86pI8_16();

extern int ConvertX86p16_32RGB888_LUT_X86[512];
extern int ConvertX86p16_32BGR888_LUT_X86[512];
extern int ConvertX86p16_32RGBA888_LUT_X86[512];
extern int ConvertX86p16_32BGRA888_LUT_X86[512];
  
#ifdef __cplusplus
}
#endif




/* Now fix up the ELF underscore problem */

#if defined(__ELF__) && defined(__GNUC__)
  #ifdef __cplusplus
  extern "C" {
  #endif

  int Hermes_X86_CPU() __attribute__ ((alias ("_Hermes_X86_CPU")));

  void ConvertX86(HermesConverterInterface *) __attribute__ ((alias ("_ConvertX86")));

#if 0
  void ClearX86_32(HermesClearInterface *) __attribute__ ((alias ("_ClearX86_32")));
  void ClearX86_24(HermesClearInterface *)  __attribute__ ((alias ("_ClearX86_24")));
  void ClearX86_16(HermesClearInterface *)  __attribute__ ((alias ("_ClearX86_16")));
  void ClearX86_8(HermesClearInterface *)  __attribute__ ((alias ("_ClearX86_8")));
#endif

  void ConvertX86p32_32BGR888() __attribute__ ((alias ("_ConvertX86p32_32BGR888")));
  void ConvertX86p32_32RGBA888() __attribute__ ((alias ("_ConvertX86p32_32RGBA888")));
  void ConvertX86p32_32BGRA888() __attribute__ ((alias ("_ConvertX86p32_32BGRA888")));
  void ConvertX86p32_24RGB888() __attribute__ ((alias ("_ConvertX86p32_24RGB888")));
  void ConvertX86p32_24BGR888() __attribute__ ((alias ("_ConvertX86p32_24BGR888")));
  void ConvertX86p32_16RGB565() __attribute__ ((alias ("_ConvertX86p32_16RGB565")));
  void ConvertX86p32_16BGR565() __attribute__ ((alias ("_ConvertX86p32_16BGR565")));
  void ConvertX86p32_16RGB555() __attribute__ ((alias ("_ConvertX86p32_16RGB555")));
  void ConvertX86p32_16BGR555() __attribute__ ((alias ("_ConvertX86p32_16BGR555")));
  void ConvertX86p32_8RGB332() __attribute__ ((alias ("_ConvertX86p32_8RGB332")));

#if 0
  void ConvertX86p16_32RGB888() __attribute__ ((alias ("_ConvertX86p16_32RGB888")));
  void ConvertX86p16_32BGR888() __attribute__ ((alias ("_ConvertX86p16_32BGR888")));
  void ConvertX86p16_32RGBA888() __attribute__ ((alias ("_ConvertX86p16_32RGBA888")));
  void ConvertX86p16_32BGRA888() __attribute__ ((alias ("_ConvertX86p16_32BGRA888")));
  void ConvertX86p16_24RGB888() __attribute__ ((alias ("_ConvertX86p16_24RGB888")));
  void ConvertX86p16_24BGR888() __attribute__ ((alias ("_ConvertX86p16_24BGR888")));
#endif
  void ConvertX86p16_16BGR565() __attribute__ ((alias ("_ConvertX86p16_16BGR565")));
  void ConvertX86p16_16RGB555() __attribute__ ((alias ("_ConvertX86p16_16RGB555")));
  void ConvertX86p16_16BGR555() __attribute__ ((alias ("_ConvertX86p16_16BGR555")));
  void ConvertX86p16_8RGB332() __attribute__ ((alias ("_ConvertX86p16_8RGB332")));

#if 0
  void CopyX86p_4byte() __attribute__ ((alias ("_CopyX86p_4byte")));
  void CopyX86p_3byte() __attribute__ ((alias ("_CopyX86p_3byte")));
  void CopyX86p_2byte() __attribute__ ((alias ("_CopyX86p_2byte")));
  void CopyX86p_1byte() __attribute__ ((alias ("_CopyX86p_1byte")));

  void ConvertX86pI8_32() __attribute__ ((alias ("_ConvertX86pI8_32")));
  void ConvertX86pI8_24() __attribute__ ((alias ("_ConvertX86pI8_24")));
  void ConvertX86pI8_16() __attribute__ ((alias ("_ConvertX86pI8_16")));

  extern int ConvertX86p16_32RGB888_LUT_X86[512] __attribute__ ((alias ("_ConvertX86p16_32RGB888_LUT_X86")));
  extern int ConvertX86p16_32BGR888_LUT_X86[512] __attribute__ ((alias ("_ConvertX86p16_32BGR888_LUT_X86")));
  extern int ConvertX86p16_32RGBA888_LUT_X86[512] __attribute__ ((alias ("_ConvertX86p16_32RGBA888_LUT_X86")));
  extern int ConvertX86p16_32BGRA888_LUT_X86[512] __attribute__ ((alias ("_ConvertX86p16_32BGRA888_LUT_X86")));
#endif

  #ifdef __cplusplus
  }
  #endif

#endif /* ELF & GNU */



/* Make it run with WATCOM C */
#ifdef __WATCOMC__
#pragma warning 601 9

#pragma aux Hermes_X86_CPU "_*"

#pragma aux ConvertX86 "_*" modify [EAX EBX ECX EDX ESI EDI]
#pragma aux ClearX86_32 "_*" modify [EAX EBX ECX EDX ESI EDI]
#pragma aux ClearX86_24 "_*" modify [EAX EBX ECX EDX ESI EDI]
#pragma aux ClearX86_16 "_*" modify [EAX EBX ECX EDX ESI EDI]
#pragma aux ClearX86_8 "_*" modify [EAX EBX ECX EDX ESI EDI]

#pragma aux ConvertX86p32_32BGR888 "_*"
#pragma aux ConvertX86p32_32RGBA888 "_*"
#pragma aux ConvertX86p32_32BGRA888 "_*"
#pragma aux ConvertX86p32_24RGB888 "_*"
#pragma aux ConvertX86p32_24BGR888 "_*"
#pragma aux ConvertX86p32_16RGB565 "_*"
#pragma aux ConvertX86p32_16BGR565 "_*"
#pragma aux ConvertX86p32_16RGB555 "_*"
#pragma aux ConvertX86p32_16BGR555 "_*"
#pragma aux ConvertX86p32_8RGB332 "_*"

#pragma aux ConvertX86p16_32RGB888 "_*"
#pragma aux ConvertX86p16_32BGR888 "_*"
#pragma aux ConvertX86p16_32RGBA888 "_*"
#pragma aux ConvertX86p16_32BGRA888 "_*"
#pragma aux ConvertX86p16_24RGB888 "_*"
#pragma aux ConvertX86p16_24BGR888 "_*"
#pragma aux ConvertX86p16_16BGR565 "_*"
#pragma aux ConvertX86p16_16RGB555 "_*"
#pragma aux ConvertX86p16_16BGR555 "_*"
#pragma aux ConvertX86p16_8RGB332 "_*"

#pragma aux CopyX86p_4byte "_*"
#pragma aux CopyX86p_3byte "_*"
#pragma aux CopyX86p_2byte "_*"
#pragma aux CopyX86p_1byte "_*"

#pragma aux ConvertX86pI8_32 "_*"
#pragma aux ConvertX86pI8_24 "_*"
#pragma aux ConvertX86pI8_16 "_*"

#pragma aux ConvertX86p16_32RGB888_LUT_X86 "_*"
#pragma aux ConvertX86p16_32BGR888_LUT_X86 "_*"
#pragma aux ConvertX86p16_32RGBA888_LUT_X86 "_*"
#pragma aux ConvertX86p16_32BGRA888_LUT_X86 "_*"

#endif /* __WATCOMC__ */


#endif /* X86_ASSEMBLER */


#endif