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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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25
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);
#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;
@ -91,6 +94,7 @@ grLfbLock( GrLock_t dwType,
{
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
@ -98,11 +102,9 @@ grLfbLock( GrLock_t dwType,
#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);
glReadPixels(0, 0, bufferwidth, bufferheight,
(dwWriteMode == GR_LFBWRITEMODE_565) ? GL_RGB : GL_RGBA,
glWriteMode, destination);
glReportError();
#ifdef OPENGL_DEBUG
if (scale)
@ -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

29
MacGLide/OpenGLide/grguSstGlide.cpp
View File

@ -195,7 +195,6 @@ grSstWinOpen(FxU32 hwnd,
{
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
@ -204,14 +203,11 @@ grSstWinOpen(FxU32 hwnd,
FreeFrameBuffer(Glide.ReadBuffer.Address);
Glide.ReadBuffer.Address = NULL;
}
#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
if ( Glide.Resolution > GR_RESOLUTION_400x300 )
{
@ -224,7 +220,6 @@ grSstWinOpen(FxU32 hwnd,
return FXFALSE;
}
#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)
@ -274,20 +269,20 @@ grSstWinOpen(FxU32 hwnd,
{
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);
// 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