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MacGLide
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Framebuffer allocated for 32bit color formats

This commit is contained in:
Jens Hemprich 2007-08-22 19:03:50 +00:00
parent 629aeebb9d
commit b8e224a059
2 changed files with 51 additions and 57 deletions
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55
MacGLide/OpenGLide/grguLfb.cpp
View File

@ -55,7 +55,7 @@ grLfbLock( GrLock_t dwType,
}
else if (OpenGL.WinOpen == false && Glide.ReadBuffer.Address)
{
BufferStruct* targetbuffer = Glide.ReadBuffer.Address ? &Glide.ReadBuffer : &Glide.TempBuffer;
BufferStruct* targetbuffer = &Glide.ReadBuffer;
lfbInfo->lfbPtr = targetbuffer->Address;
lfbInfo->origin = GR_ORIGIN_UPPER_LEFT;
}
@ -68,17 +68,20 @@ grLfbLock( GrLock_t dwType,
// Alloc readbuffer
if (Glide.ReadBuffer.Address == NULL)
{
Glide.ReadBuffer.Address = (FxU16*) AllocFrameBuffer(Glide.WindowTotalPixels, sizeof(FxU16));
// @todo: 32bit read buffers are cureently not supported (any mac game using this format for reads?)
Glide.ReadBuffer.Address = (FxU16*) AllocFrameBuffer(Glide.WindowTotalPixels,
//dwWriteMode >= GR_LFBWRITEMODE_888 ? sizeof(FxU32) : sizeof(FxU16)
sizeof(FxU16)
);
#ifdef OPENGL_DEBUG
GlideMsg("Allocated Readbuffer(%dx%d) at 0x%x\n",
Glide.WindowWidth, Glide.WindowHeight, Glide.ReadBuffer.Address);
GlideMsg("Allocated Readbuffer(%dx%d) at 0x%x\n",
Glide.WindowWidth, Glide.WindowHeight, Glide.ReadBuffer.Address);
#endif
}
// select main memory buffers
// @todo Remove conditions for NULL ReadBuffer (usage of FrameBuffer as source is wrong because it might be 16bit only)
BufferStruct* targetbuffer = &Glide.ReadBuffer;
const BufferStruct* sourcebuffer = &Glide.TempBuffer;
if (s_Framebuffer.GetRenderBufferChangedForRead() == true)
if (s_Framebuffer.GetRenderBufferChangedForRead())
{
// select buffer size
const unsigned long bufferwidth = OpenGL.WindowWidth;
@ -89,26 +92,25 @@ grLfbLock( GrLock_t dwType,
GLint glWriteMode;
switch (dwWriteMode)
{
case GR_LFBWRITEMODE_1555: glWriteMode = GL_UNSIGNED_SHORT_1_5_5_5_REV; break;
case GR_LFBWRITEMODE_565: glWriteMode = GL_UNSIGNED_SHORT_5_6_5; break;
default: glWriteMode = GL_UNSIGNED_SHORT_5_6_5; break;
case GR_LFBWRITEMODE_1555: glWriteMode = GL_UNSIGNED_SHORT_1_5_5_5_REV; break;
case GR_LFBWRITEMODE_565: glWriteMode = GL_UNSIGNED_SHORT_5_6_5; break;
//case GR_LFBWRITEMODE_888: glWriteMode = GL_UNSIGNED_BYTE_8_8_8_8; break;
default: glWriteMode = GL_UNSIGNED_SHORT_5_6_5; break;
}
// The read buffer is sized for Glide pixels. As a result we cannot be used it when the read buffer has to be resized
void* destination = (!scale && dwOrigin == GR_ORIGIN_LOWER_LEFT) ? targetbuffer->Address : sourcebuffer->Address;
#ifdef OPENGL_DEBUG
GlideMsg("Calling glReadPixels(%d, %d, 0x%x)\n", bufferwidth, bufferheight, destination);
#endif
glReadPixels(0, 0,
bufferwidth, bufferheight,
(dwWriteMode == GR_LFBWRITEMODE_1555) ? GL_RGBA : GL_RGB,
glWriteMode,
destination);
GlideMsg("Calling glReadPixels(%d, %d, 0x%x)\n", bufferwidth, bufferheight, destination);
#endif
glReadPixels(0, 0, bufferwidth, bufferheight,
(dwWriteMode == GR_LFBWRITEMODE_565) ? GL_RGB : GL_RGBA,
glWriteMode, destination);
glReportError();
#ifdef OPENGL_DEBUG
if (scale)
GlideMsg("Scaling to (%d, %d) from 0x%x to 0x%x\n",
Glide.WindowWidth, Glide.WindowHeight, sourcebuffer->Address, targetbuffer->Address);
#endif
GlideMsg("Scaling to (%d, %d) from 0x%x to 0x%x\n",
Glide.WindowWidth, Glide.WindowHeight, sourcebuffer->Address, targetbuffer->Address);
#endif
if (dwOrigin == GR_ORIGIN_UPPER_LEFT)
{
// When the OpenGL resolution differs from the Glide resolution,
@ -139,9 +141,9 @@ grLfbLock( GrLock_t dwType,
else
{
#ifdef OPENGL_DEBUG
GlideMsg("Copying/Vertical mirroring pixels to destination buffer from 0x%x to 0x%x\n",
sourcebuffer->Address, targetbuffer->Address);
#endif
GlideMsg("Copying/Vertical mirroring pixels to destination buffer from 0x%x to 0x%x\n",
sourcebuffer->Address, targetbuffer->Address);
#endif
// Swap pixels during copy from temp to read buffer
for ( int j = 0; j < Glide.WindowHeight; j++ )
{
@ -180,8 +182,8 @@ grLfbLock( GrLock_t dwType,
else
{
#ifdef OPENGL_DEBUG
GlideMsg("Copying/Vertical mirroring not necessary - pixels already in the right orientation\n");
#endif
GlideMsg("Copying/Vertical mirroring not necessary - pixels already in the right orientation\n");
#endif
}
}
// Update with current framebuffer pixels not yet written to vram
@ -220,14 +222,13 @@ grLfbUnlock( GrLock_t dwType, GrBuffer_t dwBuffer )
}
else
{
BufferStruct* targetbuffer = Glide.ReadBuffer.Address ? &Glide.ReadBuffer : &Glide.TempBuffer;
if (targetbuffer->Lock)
if (Glide.ReadBuffer.Lock)
{
// We're not interested in keeping track of unlocks since this breaks
// Framebuffer updates when moving the cursor in Carmageddon movie mode
// (because grLfbReadRegion() is called)
// @todo: -> Doesn't solve the issue
targetbuffer->Lock = false;
Glide.ReadBuffer.Lock = false;
return FXTRUE;
}
else

53
MacGLide/OpenGLide/grguSstGlide.cpp
View File

@ -191,11 +191,10 @@ grSstWinOpen(FxU32 hwnd,
int num_buffers,
int num_aux_buffers)
{
if ( OpenGL.WinOpen )
{
grSstWinClose( );
}
if (OpenGL.WinOpen)
{
grSstWinClose();
}
// Some games read from the buffer after the window has been closed
// As a result, freeing the read buffer must be deferred until the
// next call to grSstWinOpen() or unloading the library
@ -204,15 +203,12 @@ grSstWinOpen(FxU32 hwnd,
FreeFrameBuffer(Glide.ReadBuffer.Address);
Glide.ReadBuffer.Address = NULL;
}
#ifdef OGL_DONE
#ifdef OGL_DONE
GlideMsg( "grSstWinOpen( %d, %d, %d, %d, %d, %d, %d )\n",
hwnd, res, ref, cformat, org_loc, num_buffers, num_aux_buffers );
#endif
Glide.Resolution = res;
#ifdef OGL_DEBUG
#endif
Glide.Resolution = res;
#ifdef OGL_DEBUG
if ( Glide.Resolution > GR_RESOLUTION_400x300 )
{
GlideError( "grSstWinOpen: res = GR_RESOLUTION_NONE\n" );
@ -223,8 +219,7 @@ grSstWinOpen(FxU32 hwnd,
GlideError( "grSstWinOpen: Refresh Incorrect\n" );
return FXFALSE;
}
#endif
#endif
Glide.WindowWidth = windowDimensions[Glide.Resolution].width;
Glide.WindowHeight = windowDimensions[Glide.Resolution].height;
// Set the size of the opengl window (might be different from Glide window size)
@ -270,24 +265,24 @@ grSstWinOpen(FxU32 hwnd,
memset(&Glide.TempBuffer, 0, sizeof(BufferStruct));
memset(&Glide.ReadBuffer, 0, sizeof(BufferStruct));
// Initing OpenGL Window
if ( !InitWindow(hwnd))
if (!InitWindow(hwnd))
{
return FXFALSE;
return FXFALSE;
}
// Note: The OpenGL resolution might have changed during the call to InitWindow().
// As a result, buffers must be allocated afterwards
const unsigned long openglpixels = OpenGL.WindowWidth * OpenGL.WindowHeight;
// At first, allocate a framebuffer for 16bit pixel data only (will be expanded on demand)
unsigned long buffertypesize = sizeof(FxU16); // (dwWriteMode >= GR_LFBWRITEMODE_888) ? sizeof(FxU32) : sizeof(FxU16);
Glide.FrameBuffer.Address = (FxU16*) AllocFrameBuffer(Glide.WindowTotalPixels * buffertypesize + openglpixels * sizeof(FxU32), 1);
Glide.TempBuffer.Address = &Glide.FrameBuffer.Address[Glide.WindowTotalPixels * buffertypesize >> 1];
memset( Glide.FrameBuffer.Address, 0, Glide.WindowTotalPixels * buffertypesize);
memset( Glide.TempBuffer.Address, 0, openglpixels * sizeof(FxU32));
// As the lfb write format isn't known yet we must allocate a framebuffer for 32bit color formats
// although most games will use 16bit corlor formats only
Glide.FrameBuffer.Address = (FxU16*) AllocFrameBuffer(Glide.WindowTotalPixels + openglpixels, 4);
// >> 1 as the framebuffer is allocated for 32 bit color formats but the pointer is declared as a short
Glide.TempBuffer.Address = &Glide.FrameBuffer.Address[Glide.WindowTotalPixels >> 1];
memset(Glide.FrameBuffer.Address, 0, Glide.WindowTotalPixels * sizeof(FxU32));
memset(Glide.TempBuffer.Address, 0, openglpixels * sizeof(FxU32));
// Prealloc readbuffer for Carmageddon, because allocating it on demand
// (when moving the cursor in Movie mode) would produce an OutOfMemory error)
if (Glide.ReadBuffer.Address == NULL &&
s_GlideApplication.GetType() == GlideApplication::Carmageddon)
const bool preallocateReadBuffer = s_GlideApplication.GetType() == GlideApplication::Carmageddon;
if (preallocateReadBuffer)
{
Glide.ReadBuffer.Address = (FxU16*) AllocFrameBuffer(Glide.WindowTotalPixels, sizeof(FxU16));
#ifdef OPENGL_DEBUG
@ -299,16 +294,14 @@ grSstWinOpen(FxU32 hwnd,
RenderInitialize();
s_Framebuffer.initialise(&Glide.FrameBuffer, &Glide.TempBuffer);
Textures->initOpenGL();
#ifdef OGL_DONE
GlideMsg( "----Start of grSstWinOpen()\n" );
#endif
// All should be disabled
//depth buffering, fog, chroma-key, alpha blending, alpha testing
// All of this should be disabled: depth buffering, fog, chroma-key, alpha blending, alpha testing
#ifdef OPTIMISE_GLIDE_STATE_CHANGES
// When state change optimising is enabled, passing in default values of 0
// will not initialise the corresponding values in the OpenGL struct,
// because the optimising code assumes, it has already been set earlier.
// would not initialise the corresponding values in the OpenGL struct,
// because the optimising code would assume that the state has already been set.
// By writing values other than 0 to glide state variables which will
// become 0 below, the OpenGL values are initialises as exspected.
// For functions that are called by other functions during the