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reactos/dll/opengl/opengl32/swimpl.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS
* FILE: dll/opengl/opengl32/swimpl.c
* PURPOSE: OpenGL32 DLL, opengl software implementation
*/
#include "opengl32.h"
/* MESA includes */
#include <main/context.h>
#include <main/framebuffer.h>
#include <main/renderbuffer.h>
#include <main/shared.h>
#include <main/viewport.h>
#include <swrast/s_context.h>
#include <swrast/s_renderbuffer.h>
#include <swrast_setup/swrast_setup.h>
#include <tnl/t_pipeline.h>
#include <tnl/tnl.h>
#include <drivers/common/driverfuncs.h>
#include <drivers/common/meta.h>
WINE_DEFAULT_DEBUG_CHANNEL(opengl32);
#define WIDTH_BYTES_ALIGN32(cx, bpp) ((((cx) * (bpp) + 31) & ~31) >> 3)
static const struct
{
gl_format mesa;
BYTE color_bits;
BYTE red_bits, red_shift; DWORD red_mask;
BYTE green_bits, green_shift; DWORD green_mask;
BYTE blue_bits, blue_shift; DWORD blue_mask;
BYTE alpha_bits, alpha_shift; DWORD alpha_mask;
BYTE accum_bits;
BYTE depth_bits;
BYTE stencil_bits;
DWORD bmp_compression;
} pixel_formats[] =
{
{ MESA_FORMAT_ARGB8888, 32, 8, 8, 0x00FF0000, 8, 16, 0x0000FF00, 8, 24, 0x000000FF, 8, 0, 0xFF000000, 16, 32, 8, BI_BITFIELDS },
{ MESA_FORMAT_ARGB8888, 32, 8, 8, 0x00FF0000, 8, 16, 0x0000FF00, 8, 24, 0x000000FF, 8, 0, 0xFF000000, 16, 16, 8, BI_BITFIELDS },
{ MESA_FORMAT_RGBA8888_REV, 32, 8, 8, 0x000000FF, 8, 16, 0x0000FF00, 8, 24, 0x00FF0000, 8, 0, 0xFF000000, 16, 32, 8, BI_BITFIELDS },
{ MESA_FORMAT_RGBA8888_REV, 32, 8, 8, 0x000000FF, 8, 16, 0x0000FF00, 8, 24, 0x00FF0000, 8, 0, 0xFF000000, 16, 16, 8, BI_BITFIELDS },
{ MESA_FORMAT_RGBA8888, 32, 8, 0, 0xFF000000, 8, 8, 0x00FF0000, 8, 16, 0x0000FF00, 8, 24, 0x000000FF, 16, 32, 8, BI_BITFIELDS },
{ MESA_FORMAT_RGBA8888, 32, 8, 0, 0xFF000000, 8, 8, 0x00FF0000, 8, 16, 0x0000FF00, 8, 24, 0x000000FF, 16, 16, 8, BI_BITFIELDS },
{ MESA_FORMAT_ARGB8888_REV, 32, 8, 16, 0x0000FF00, 8, 8, 0x00FF0000, 8, 0, 0xFF000000, 8, 24, 0x000000FF, 16, 32, 8, BI_BITFIELDS },
{ MESA_FORMAT_ARGB8888_REV, 32, 8, 16, 0x0000FF00, 8, 8, 0x00FF0000, 8, 0, 0xFF000000, 8, 24, 0x000000FF, 16, 16, 8, BI_BITFIELDS },
{ MESA_FORMAT_RGB888, 24, 8, 0, 0x00000000, 8, 8, 0x00000000, 8, 16, 0x00000000, 0, 0, 0x00000000, 16, 32, 8, BI_RGB },
{ MESA_FORMAT_RGB888, 24, 8, 0, 0x00000000, 8, 8, 0x00000000, 8, 16, 0x00000000, 0, 0, 0x00000000, 16, 16, 8, BI_RGB },
// { MESA_FORMAT_BGR888, 24, 8, 16, 8, 8, 8, 0, 0, 0, 16, 32, 8 },
// { MESA_FORMAT_BGR888, 24, 8, 16, 8, 8, 8, 0, 0, 0, 16, 16, 8 },
{ MESA_FORMAT_RGB565, 16, 5, 0, 0x0000F800, 6, 5, 0x000007E0, 5, 11, 0x0000001F, 0, 0, 0x00000000, 16, 32, 8, BI_BITFIELDS },
{ MESA_FORMAT_RGB565, 16, 5, 0, 0x0000F800, 6, 5, 0x000007E0, 5, 11, 0x0000001F, 0, 0, 0x00000000, 16, 16, 8, BI_BITFIELDS },
};
#define SW_BACK_RENDERBUFFER_CLASS 0x8911
#define SW_FRONT_RENDERBUFFER_CLASS 0x8910
struct sw_front_renderbuffer
{
struct swrast_renderbuffer swrast;
HDC hdcmem;
GLuint x, y, w, h;
HBITMAP hbmp;
BOOL write;
};
#define SW_FB_DOUBLEBUFFERED 0x1
#define SW_FB_DIRTY_SIZE 0x2
struct sw_framebuffer
{
HDC hdc;
INT sw_format;
UINT format_index;
DWORD flags;
/* The mesa objects */
struct gl_config *gl_visual; /* Describes the buffers */
struct gl_framebuffer *gl_buffer; /* The mesa representation of frame buffer */
struct sw_front_renderbuffer frontbuffer;
struct swrast_renderbuffer backbuffer;
/* The bitmapi info we will use for rendering to display */
BITMAPINFO bmi;
};
struct sw_context
{
struct gl_context mesa; /* Base class - this must be first */
/* This is to keep track of the size of the front buffer */
HHOOK hook;
/* Framebuffer currently owning the context */
struct sw_framebuffer framebuffer;
};
/* mesa opengl32 "driver" specific */
static const GLubyte *
sw_get_string( struct gl_context *ctx, GLenum name )
{
(void) ctx;
if(name == GL_RENDERER)
{
static const GLubyte renderer[] = { 'R','e','a','c','t','O','S',' ',
'S','o','f','t','w','a','r','e',' ',
'I','m','p','l','e','m','e','n','t','a','t','i','o','n',0 };
return renderer;
}
/* Don't claim to support the fancy extensions that mesa supports, they will be slow anyway */
if(name == GL_EXTENSIONS)
{
static const GLubyte extensions[] = { 0 };
return extensions;
}
return NULL;
}
static void
sw_update_state( struct gl_context *ctx, GLuint new_state )
{
/* easy - just propagate */
_swrast_InvalidateState( ctx, new_state );
_swsetup_InvalidateState( ctx, new_state );
_tnl_InvalidateState( ctx, new_state );
_vbo_InvalidateState( ctx, new_state );
}
/* Renderbuffer routines */
static GLboolean
sw_bb_renderbuffer_storage(struct gl_context* ctx, struct gl_renderbuffer *rb,
GLenum internalFormat,
GLuint width, GLuint height)
{
struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
struct sw_framebuffer* fb = CONTAINING_RECORD(srb, struct sw_framebuffer, backbuffer);
UINT widthBytes = WIDTH_BYTES_ALIGN32(width, pixel_formats[fb->format_index].color_bits);
srb->Base.Format = pixel_formats[fb->format_index].mesa;
if(srb->Buffer)
srb->Buffer = HeapReAlloc(GetProcessHeap(), 0, srb->Buffer, widthBytes*height);
else
srb->Buffer = HeapAlloc(GetProcessHeap(), 0, widthBytes*height);
if(!srb->Buffer)
{
srb->Base.Format = MESA_FORMAT_NONE;
return GL_FALSE;
}
srb->Base.Width = width;
srb->Base.Height = height;
srb->RowStride = widthBytes;
return GL_TRUE;
}
static void
sw_bb_renderbuffer_delete(struct gl_renderbuffer *rb)
{
struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
if (srb->Buffer)
{
HeapFree(GetProcessHeap(), 0, srb->Buffer);
srb->Buffer = NULL;
}
}
static void
sw_fb_renderbuffer_delete(struct gl_renderbuffer *rb)
{
struct sw_front_renderbuffer* srb = (struct sw_front_renderbuffer*)rb;
if (srb->hbmp)
{
srb->hbmp = SelectObject(srb->hdcmem, srb->hbmp);
DeleteDC(srb->hdcmem);
DeleteObject(srb->hbmp);
srb->hdcmem = NULL;
srb->hbmp = NULL;
srb->swrast.Buffer = NULL;
}
}
static GLboolean
sw_fb_renderbuffer_storage(struct gl_context *ctx, struct gl_renderbuffer *rb,
GLenum internalFormat,
GLuint width, GLuint height)
{
struct sw_front_renderbuffer* srb = (struct sw_front_renderbuffer*)rb;
struct sw_framebuffer* fb = CONTAINING_RECORD(srb, struct sw_framebuffer, frontbuffer);
HDC hdc = IntGetCurrentDC();
/* Don't bother if the size doesn't change */
if(rb->Width == width && rb->Height == height)
return GL_TRUE;
/* Delete every objects which could have been used before */
sw_fb_renderbuffer_delete(&srb->swrast.Base);
/* So the app wants to use the frontbuffer, allocate a DIB for it */
srb->hbmp = CreateDIBSection(
hdc,
&fb->bmi,
DIB_RGB_COLORS,
(void**)&srb->swrast.Buffer,
NULL, 0);
if(!srb->hbmp)
{
ERR("Failed to create the DIB section for the front buffer, %lu.\n", GetLastError());
return GL_FALSE;
}
/* Create the DC and attach the DIB section to it */
srb->hdcmem = CreateCompatibleDC(hdc);
assert(srb->hdcmem != NULL);
srb->hbmp = SelectObject(srb->hdcmem, srb->hbmp);
assert(srb->hbmp != NULL);
/* Set formats, width and height */
srb->swrast.Base.Format = pixel_formats[fb->format_index].mesa;
srb->swrast.Base.Width = width;
srb->swrast.Base.Height = height;
return GL_TRUE;
}
static
void
sw_init_renderbuffers(struct sw_framebuffer *fb)
{
_mesa_init_renderbuffer(&fb->frontbuffer.swrast.Base, 0);
fb->frontbuffer.swrast.Base.ClassID = SW_FRONT_RENDERBUFFER_CLASS;
fb->frontbuffer.swrast.Base.AllocStorage = sw_fb_renderbuffer_storage;
fb->frontbuffer.swrast.Base.Delete = sw_fb_renderbuffer_delete;
fb->frontbuffer.swrast.Base.InternalFormat = GL_RGBA;
fb->frontbuffer.swrast.Base._BaseFormat = GL_RGBA;
_mesa_remove_renderbuffer(fb->gl_buffer, BUFFER_FRONT_LEFT);
_mesa_add_renderbuffer(fb->gl_buffer, BUFFER_FRONT_LEFT, &fb->frontbuffer.swrast.Base);
if(fb->flags & SW_FB_DOUBLEBUFFERED)
{
_mesa_init_renderbuffer(&fb->backbuffer.Base, 0);
fb->backbuffer.Base.ClassID = SW_BACK_RENDERBUFFER_CLASS;
fb->backbuffer.Base.AllocStorage = sw_bb_renderbuffer_storage;
fb->backbuffer.Base.Delete = sw_bb_renderbuffer_delete;
fb->backbuffer.Base.InternalFormat = GL_RGBA;
fb->backbuffer.Base._BaseFormat = GL_RGBA;
_mesa_remove_renderbuffer(fb->gl_buffer, BUFFER_BACK_LEFT);
_mesa_add_renderbuffer(fb->gl_buffer, BUFFER_BACK_LEFT, &fb->backbuffer.Base);
}
}
static void
sw_MapRenderbuffer(struct gl_context *ctx,
struct gl_renderbuffer *rb,
GLuint x, GLuint y, GLuint w, GLuint h,
GLbitfield mode,
GLubyte **mapOut, GLint *rowStrideOut)
{
if(rb->ClassID == SW_FRONT_RENDERBUFFER_CLASS)
{
/* This is our front buffer */
struct sw_front_renderbuffer* srb = (struct sw_front_renderbuffer*)rb;
struct sw_framebuffer* fb = CONTAINING_RECORD(srb, struct sw_framebuffer, frontbuffer);
/* Set the stride */
*rowStrideOut = WIDTH_BYTES_ALIGN32(rb->Width, pixel_formats[fb->format_index].color_bits);
/* Remember where we "mapped" */
srb->x = x; srb->y = y; srb->w = w; srb->h = h;
/* Remember if we should write it later */
srb->write = !!(mode & GL_MAP_WRITE_BIT);
/* Get the bits, if needed */
if(mode & GL_MAP_READ_BIT)
{
BitBlt(srb->hdcmem, srb->x, srb->y, srb->w, srb->h,
IntGetCurrentDC(), srb->x, srb->y, SRCCOPY);
}
/* And return it */
*mapOut = (BYTE*)srb->swrast.Buffer + *rowStrideOut*y + x*pixel_formats[fb->format_index].color_bits/8;
return;
}
if(rb->ClassID == SW_BACK_RENDERBUFFER_CLASS)
{
/* This is our front buffer */
struct swrast_renderbuffer* srb = (struct swrast_renderbuffer*)rb;
const GLuint bpp = _mesa_get_format_bytes(rb->Format);
/* Set the stride */
*rowStrideOut = srb->RowStride;
*mapOut = (BYTE*)srb->Buffer + srb->RowStride*y + x*bpp;
return;
}
/* Let mesa rasterizer take care of this */
_swrast_map_soft_renderbuffer(ctx, rb, x, y, w, h, mode,
mapOut, rowStrideOut);
}
static void
sw_UnmapRenderbuffer(struct gl_context *ctx, struct gl_renderbuffer *rb)
{
if (rb->ClassID== SW_FRONT_RENDERBUFFER_CLASS)
{
/* This is our front buffer */
struct sw_front_renderbuffer* srb = (struct sw_front_renderbuffer*)rb;
if(srb->write)
{
/* Copy the bits to our display */
BitBlt(IntGetCurrentDC(),
srb->x, srb->y, srb->w, srb->h,
srb->hdcmem, srb->x, srb->y, SRCCOPY);
srb->write = FALSE;
}
return;
}
if(rb->ClassID == SW_BACK_RENDERBUFFER_CLASS)
return; /* nothing to do */
/* Let mesa rasterizer take care of this */
_swrast_unmap_soft_renderbuffer(ctx, rb);
}
/* WGL <-> mesa glue */
static UINT index_from_format(struct wgl_dc_data* dc_data, INT format, BOOL* doubleBuffered)
{
UINT index;
INT nb_win_compat = 0, start_win_compat = 0;
HDC hdc;
INT bpp;
*doubleBuffered = FALSE;
if(!(dc_data->flags & WGL_DC_OBJ_DC))
return format - 1; /* OBJ_MEMDC, not double buffered */
hdc = GetDC(dc_data->owner.hwnd);
/* Find the window compatible formats */
bpp = GetDeviceCaps(hdc, BITSPIXEL);
for(index = 0; index<sizeof(pixel_formats)/sizeof(pixel_formats[0]); index++)
{
if(pixel_formats[index].color_bits == bpp)
{
if(!start_win_compat)
start_win_compat = index+1;
nb_win_compat++;
}
}
ReleaseDC(dc_data->owner.hwnd, hdc);
/* Double buffered format */
if(format < (start_win_compat + nb_win_compat))
{
if(format >= start_win_compat)
*doubleBuffered = TRUE;
return format-1;
}
/* Shift */
return format - nb_win_compat - 1;
}
INT sw_DescribePixelFormat(HDC hdc, INT format, UINT size, PIXELFORMATDESCRIPTOR* descr)
{
UINT index;
INT nb_win_compat = 0, start_win_compat = 0;
INT ret = sizeof(pixel_formats)/sizeof(pixel_formats[0]);
if (GetObjectType(hdc) == OBJ_DC)
{
/* Find the window compatible formats */
INT bpp = GetDeviceCaps(hdc, BITSPIXEL);
for (index = 0; index < sizeof(pixel_formats)/sizeof(pixel_formats[0]); index++)
{
if (pixel_formats[index].color_bits == bpp)
{
if (!start_win_compat)
start_win_compat = index+1;
nb_win_compat++;
}
}
/* Add the double buffered formats */
ret += nb_win_compat;
}
index = (UINT)format - 1;
if(!descr)
return ret;
if((format > ret) || (size != sizeof(*descr)))
return 0;
/* Set flags */
descr->dwFlags = PFD_SUPPORT_GDI | PFD_SUPPORT_OPENGL | PFD_DRAW_TO_BITMAP | PFD_GENERIC_FORMAT;
/* See if this is a format compatible with the window */
if(format >= start_win_compat && format < (start_win_compat + nb_win_compat*2) )
{
/* It is */
descr->dwFlags |= PFD_DRAW_TO_WINDOW;
/* See if this should be double buffered */
if(format < (start_win_compat + nb_win_compat))
{
/* No GDI, no bitmap */
descr->dwFlags &= ~(PFD_SUPPORT_GDI | PFD_DRAW_TO_BITMAP);
descr->dwFlags |= PFD_DOUBLEBUFFER;
}
}
/* Normalize the index */
if(format >= start_win_compat + nb_win_compat)
index -= nb_win_compat;
/* Fill the rest of the structure */
descr->nSize = sizeof(*descr);
descr->nVersion = 1;
descr->iPixelType = PFD_TYPE_RGBA;
descr->cColorBits = pixel_formats[index].color_bits;
descr->cRedBits = pixel_formats[index].red_bits;
descr->cRedShift = pixel_formats[index].red_shift;
descr->cGreenBits = pixel_formats[index].green_bits;
descr->cGreenShift = pixel_formats[index].green_shift;
descr->cBlueBits = pixel_formats[index].blue_bits;
descr->cBlueShift = pixel_formats[index].blue_shift;
descr->cAlphaBits = pixel_formats[index].alpha_bits;
descr->cAlphaShift = pixel_formats[index].alpha_shift;
descr->cAccumBits = pixel_formats[index].accum_bits;
descr->cAccumRedBits = pixel_formats[index].accum_bits / 4;
descr->cAccumGreenBits = pixel_formats[index].accum_bits / 4;
descr->cAccumBlueBits = pixel_formats[index].accum_bits / 4;
descr->cAccumAlphaBits = pixel_formats[index].accum_bits / 4;
descr->cDepthBits = pixel_formats[index].depth_bits;
descr->cStencilBits = pixel_formats[index].stencil_bits;
descr->cAuxBuffers = 0;
descr->iLayerType = PFD_MAIN_PLANE;
return ret;
}
BOOL sw_SetPixelFormat(HDC hdc, struct wgl_dc_data* dc_data, INT format)
{
struct sw_framebuffer* fb;
BOOL doubleBuffered;
assert(dc_data->sw_data == NULL);
/* So, someone is crazy enough to ask for sw implementation. Announce it. */
TRACE("OpenGL software implementation START!\n");
/* allocate our structure */
fb = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, FIELD_OFFSET(struct sw_framebuffer, bmi.bmiColors[3]));
if(!fb)
{
ERR("HeapAlloc FAILED!\n");
return FALSE;
}
/* Get the format index */
fb->format_index = index_from_format(dc_data, format, &doubleBuffered);
TRACE("Using format %u - double buffered: %x.\n", fb->format_index, doubleBuffered);
fb->flags = doubleBuffered ? SW_FB_DOUBLEBUFFERED : 0;
/* Set the bitmap info describing the framebuffer */
fb->bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
fb->bmi.bmiHeader.biPlanes = 1;
fb->bmi.bmiHeader.biBitCount = pixel_formats[fb->format_index].color_bits;
fb->bmi.bmiHeader.biCompression = pixel_formats[fb->format_index].bmp_compression;
fb->bmi.bmiHeader.biSizeImage = 0;
fb->bmi.bmiHeader.biXPelsPerMeter = 0;
fb->bmi.bmiHeader.biYPelsPerMeter = 0;
fb->bmi.bmiHeader.biClrUsed = 0;
fb->bmi.bmiHeader.biClrImportant = 0;
*((DWORD*)&fb->bmi.bmiColors[0]) = pixel_formats[fb->format_index].red_mask;
*((DWORD*)&fb->bmi.bmiColors[1]) = pixel_formats[fb->format_index].green_mask;
*((DWORD*)&fb->bmi.bmiColors[2]) = pixel_formats[fb->format_index].blue_mask;
/* Save the HDC */
fb->hdc = hdc;
/* Allocate the visual structure describing the format */
fb->gl_visual = _mesa_create_visual(
!!(fb->flags & SW_FB_DOUBLEBUFFERED),
GL_FALSE, /* No stereoscopic support */
pixel_formats[fb->format_index].red_bits,
pixel_formats[fb->format_index].green_bits,
pixel_formats[fb->format_index].blue_bits,
pixel_formats[fb->format_index].alpha_bits,
pixel_formats[fb->format_index].depth_bits,
pixel_formats[fb->format_index].stencil_bits,
pixel_formats[fb->format_index].accum_bits,
pixel_formats[fb->format_index].accum_bits,
pixel_formats[fb->format_index].accum_bits,
pixel_formats[fb->format_index].alpha_bits ?
pixel_formats[fb->format_index].accum_bits : 0);
if(!fb->gl_visual)
{
ERR("Failed to allocate a GL visual.\n");
HeapFree(GetProcessHeap(), 0, fb);
return FALSE;
}
/* Allocate the framebuffer structure */
fb->gl_buffer = _mesa_create_framebuffer(fb->gl_visual);
if (!fb->gl_buffer) {
ERR("Failed to allocate the mesa framebuffer structure.\n");
_mesa_destroy_visual( fb->gl_visual );
HeapFree(GetProcessHeap(), 0, fb);
return FALSE;
}
/* Add the depth/stencil/accum buffers */
_swrast_add_soft_renderbuffers(fb->gl_buffer,
GL_FALSE, /* color */
fb->gl_visual->haveDepthBuffer,
fb->gl_visual->haveStencilBuffer,
fb->gl_visual->haveAccumBuffer,
GL_FALSE, /* alpha */
GL_FALSE /* aux */ );
/* Initialize our render buffers */
sw_init_renderbuffers(fb);
/* Everything went fine */
dc_data->sw_data = fb;
return TRUE;
}
DHGLRC sw_CreateContext(struct wgl_dc_data* dc_data)
{
struct sw_context* sw_ctx;
struct sw_framebuffer* fb = dc_data->sw_data;
struct dd_function_table mesa_drv_functions;
TNLcontext *tnl;
/* We use the mesa memory routines for this function */
sw_ctx = CALLOC_STRUCT(sw_context);
if(!sw_ctx)
return NULL;
/* Set mesa default functions */
_mesa_init_driver_functions(&mesa_drv_functions);
/* Override */
mesa_drv_functions.GetString = sw_get_string;
mesa_drv_functions.UpdateState = sw_update_state;
mesa_drv_functions.GetBufferSize = NULL;
/* Initialize the context */
if(!_mesa_initialize_context(&sw_ctx->mesa,
fb->gl_visual,
NULL,
&mesa_drv_functions,
(void *) sw_ctx))
{
ERR("Failed to initialize the mesa context.\n");
free(sw_ctx);
return NULL;
}
/* Initialize the "meta driver" */
_mesa_meta_init(&sw_ctx->mesa);
/* Initialize helpers */
if(!_swrast_CreateContext(&sw_ctx->mesa) ||
!_vbo_CreateContext(&sw_ctx->mesa) ||
!_tnl_CreateContext(&sw_ctx->mesa) ||
!_swsetup_CreateContext(&sw_ctx->mesa))
{
ERR("Failed initializing helpers.\n");
_mesa_free_context_data(&sw_ctx->mesa);
free(sw_ctx);
return NULL;
}
/* Wake up! */
_swsetup_Wakeup(&sw_ctx->mesa);
/* Use TnL defaults */
tnl = TNL_CONTEXT(&sw_ctx->mesa);
tnl->Driver.RunPipeline = _tnl_run_pipeline;
/* To map the display into user memory */
sw_ctx->mesa.Driver.MapRenderbuffer = sw_MapRenderbuffer;
sw_ctx->mesa.Driver.UnmapRenderbuffer = sw_UnmapRenderbuffer;
return (DHGLRC)sw_ctx;
}
BOOL sw_DeleteContext(DHGLRC dhglrc)
{
struct sw_context* sw_ctx = (struct sw_context*)dhglrc;
/* Those get clobbered by _mesa_free_context_data via _glapi_set{context,dispath_table} */
void* icd_save = IntGetCurrentICDPrivate();
const GLDISPATCHTABLE* table_save = IntGetCurrentDispatchTable();
/* Destroy everything */
_mesa_meta_free( &sw_ctx->mesa );
_swsetup_DestroyContext( &sw_ctx->mesa );
_tnl_DestroyContext( &sw_ctx->mesa );
_vbo_DestroyContext( &sw_ctx->mesa );
_swrast_DestroyContext( &sw_ctx->mesa );
_mesa_free_context_data( &sw_ctx->mesa );
free( sw_ctx );
/* Restore this */
IntSetCurrentDispatchTable(table_save);
IntSetCurrentICDPrivate(icd_save);
return TRUE;
}
PROC sw_GetProcAddress(LPCSTR name)
{
/* We don't support any extensions */
WARN("Asking for proc address %s, returning NULL.\n", name);
return NULL;
}
BOOL sw_CopyContext(DHGLRC dhglrcSrc, DHGLRC dhglrcDst, UINT mask)
{
FIXME("Software wglCopyContext is UNIMPLEMENTED, mask %lx.\n", mask);
return FALSE;
}
BOOL sw_ShareLists(DHGLRC dhglrcSrc, DHGLRC dhglrcDst)
{
struct sw_context* sw_ctx_src = (struct sw_context*)dhglrcSrc;
struct sw_context* sw_ctx_dst = (struct sw_context*)dhglrcDst;
/* See if it was already shared */
if(sw_ctx_dst->mesa.Shared->RefCount > 1)
return FALSE;
/* Unreference the old, share the new */
_mesa_reference_shared_state(&sw_ctx_dst->mesa,
&sw_ctx_dst->mesa.Shared,
sw_ctx_src->mesa.Shared);
return TRUE;
}
static
LRESULT CALLBACK
sw_call_window_proc(
int nCode,
WPARAM wParam,
LPARAM lParam )
{
struct wgl_dc_data* dc_data = IntGetCurrentDcData();
struct sw_context* ctx = (struct sw_context*)IntGetCurrentDHGLRC();
struct sw_framebuffer* fb;
PCWPSTRUCT pParams = (PCWPSTRUCT)lParam;
if((!dc_data) || (!ctx))
return 0;
if(!(dc_data->flags & WGL_DC_OBJ_DC))
return 0;
if((nCode < 0) || (dc_data->owner.hwnd != pParams->hwnd) || (dc_data->sw_data == NULL))
return CallNextHookEx(ctx->hook, nCode, wParam, lParam);
fb = dc_data->sw_data;
if (pParams->message == WM_WINDOWPOSCHANGED)
{
/* We handle WM_WINDOWPOSCHANGED instead of WM_SIZE because according to
* http://blogs.msdn.com/oldnewthing/archive/2008/01/15/7113860.aspx
* WM_SIZE is generated from WM_WINDOWPOSCHANGED by DefWindowProc so it
* can be masked out by the application. */
LPWINDOWPOS lpWindowPos = (LPWINDOWPOS)pParams->lParam;
if((lpWindowPos->flags & SWP_SHOWWINDOW) ||
!(lpWindowPos->flags & SWP_NOMOVE) ||
!(lpWindowPos->flags & SWP_NOSIZE))
{
/* Size in WINDOWPOS includes the window frame, so get the size
* of the client area via GetClientRect. */
RECT client_rect;
UINT width, height;
TRACE("Got WM_WINDOWPOSCHANGED\n");
GetClientRect(pParams->hwnd, &client_rect);
width = client_rect.right - client_rect.left;
height = client_rect.bottom - client_rect.top;
/* Do not reallocate for minimized windows */
if(width <= 0 || height <= 0)
goto end;
/* Update framebuffer size */
fb->bmi.bmiHeader.biWidth = width;
fb->bmi.bmiHeader.biHeight = height;
/* Propagate to mesa */
_mesa_resize_framebuffer(&ctx->mesa, fb->gl_buffer, width, height);
}
}
end:
return CallNextHookEx(ctx->hook, nCode, wParam, lParam);
}
BOOL sw_SetContext(struct wgl_dc_data* dc_data, DHGLRC dhglrc)
{
struct sw_context* sw_ctx = (struct sw_context*)dhglrc;
struct sw_framebuffer* fb = dc_data->sw_data;
UINT width, height;
/* Update state */
sw_update_state(&sw_ctx->mesa, 0);
/* Get framebuffer size */
if(dc_data->flags & WGL_DC_OBJ_DC)
{
HWND hwnd = dc_data->owner.hwnd;
RECT client_rect;
if(!hwnd)
{
ERR("Physical DC without a window!\n");
return FALSE;
}
if(!GetClientRect(hwnd, &client_rect))
{
ERR("GetClientRect failed!\n");
return FALSE;
}
/* This is a physical DC. Setup the hook */
sw_ctx->hook = SetWindowsHookEx(WH_CALLWNDPROC,
sw_call_window_proc,
NULL,
GetCurrentThreadId());
/* Calculate width & height */
width = client_rect.right - client_rect.left;
height = client_rect.bottom - client_rect.top;
}
else /* OBJ_MEMDC */
{
BITMAP bm;
HBITMAP hbmp;
HDC hdc = dc_data->owner.hdc;
if(fb->flags & SW_FB_DOUBLEBUFFERED)
{
ERR("Memory DC called with a double buffered format.\n");
return FALSE;
}
hbmp = GetCurrentObject( hdc, OBJ_BITMAP );
if(!hbmp)
{
ERR("No Bitmap!\n");
return FALSE;
}
if(GetObject(hbmp, sizeof(bm), &bm) == 0)
{
ERR("GetObject failed!\n");
return FALSE;
}
width = bm.bmWidth;
height = bm.bmHeight;
}
if(!width) width = 1;
if(!height) height = 1;
fb->bmi.bmiHeader.biWidth = width;
fb->bmi.bmiHeader.biHeight = height;
/* Also make the mesa context current to mesa */
if(!_mesa_make_current(&sw_ctx->mesa, fb->gl_buffer, fb->gl_buffer))
{
ERR("_mesa_make_current filaed!\n");
return FALSE;
}
/* Set the viewport if this is the first time we initialize this context */
if(sw_ctx->mesa.Viewport.X == 0 &&
sw_ctx->mesa.Viewport.Y == 0 &&
sw_ctx->mesa.Viewport.Width == 0 &&
sw_ctx->mesa.Viewport.Height == 0)
{
_mesa_set_viewport(&sw_ctx->mesa, 0, 0, width, height);
}
/* update the framebuffer size */
_mesa_resize_framebuffer(&sw_ctx->mesa, fb->gl_buffer, width, height);
/* We're good */
return TRUE;
}
void sw_ReleaseContext(DHGLRC dhglrc)
{
struct sw_context* sw_ctx = (struct sw_context*)dhglrc;
/* Forward to mesa */
_mesa_make_current(NULL, NULL, NULL);
/* Unhook */
if(sw_ctx->hook)
{
UnhookWindowsHookEx(sw_ctx->hook);
sw_ctx->hook = NULL;
}
}
BOOL sw_SwapBuffers(HDC hdc, struct wgl_dc_data* dc_data)
{
struct sw_framebuffer* fb = dc_data->sw_data;
struct sw_context* sw_ctx = (struct sw_context*)IntGetCurrentDHGLRC();
/* Notify mesa */
if(sw_ctx)
_mesa_notifySwapBuffers(&sw_ctx->mesa);
if(!(fb->flags & SW_FB_DOUBLEBUFFERED))
return TRUE;
/* Upload to the display */
return (SetDIBitsToDevice(hdc,
0,
0,
fb->bmi.bmiHeader.biWidth,
fb->bmi.bmiHeader.biHeight,
0,
0,
0,
fb->bmi.bmiHeader.biHeight,
fb->backbuffer.Buffer,
&fb->bmi,
DIB_RGB_COLORS) != 0);
}
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