diff options
author | Keith Whitwell <keith@tungstengraphics.com> | 2009-01-28 12:25:25 +0000 |
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committer | Keith Whitwell <keith@tungstengraphics.com> | 2009-01-28 12:25:25 +0000 |
commit | f17eb0b13c6a2e70746edd1d882bf71adec129fb (patch) | |
tree | 8b3514e756a0121f9848161935efa4d336650257 /src/gallium/state_trackers/wgl/shared/stw_context.c | |
parent | 19d06f4e1692070afc7b3cab0ea1d78044820b0a (diff) |
wgl: move context functions to shared
Diffstat (limited to 'src/gallium/state_trackers/wgl/shared/stw_context.c')
-rw-r--r-- | src/gallium/state_trackers/wgl/shared/stw_context.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/wgl/shared/stw_context.c b/src/gallium/state_trackers/wgl/shared/stw_context.c new file mode 100644 index 0000000000..b54e084230 --- /dev/null +++ b/src/gallium/state_trackers/wgl/shared/stw_context.c @@ -0,0 +1,288 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +#include <windows.h> + +#include "main/mtypes.h" +#include "main/context.h" +#include "pipe/p_compiler.h" +#include "pipe/p_context.h" +#include "state_tracker/st_context.h" +#include "state_tracker/st_public.h" +#include "shared/stw_device.h" +#include "shared/stw_winsys.h" +#include "shared/stw_framebuffer.h" +#include "shared/stw_pixelformat.h" +#include "wgl/stw_wgl_arbmultisample.h" +#include "stw_context.h" +//#include "stw_wgl.h" + +static struct wgl_context *ctx_head = NULL; + +static HDC current_hdc = NULL; +static HGLRC current_hrc = NULL; + +BOOL +stw_wgl_copy_context( + HGLRC hglrcSrc, + HGLRC hglrcDst, + UINT mask ) +{ + (void) hglrcSrc; + (void) hglrcDst; + (void) mask; + + return FALSE; +} + +HGLRC +stw_wgl_create_context( + HDC hdc, + int iLayerPlane ) +{ + uint pfi; + const struct pixelformat_info *pf; + struct wgl_context *ctx; + GLvisual *visual; + struct pipe_context *pipe; + + if (iLayerPlane != 0) + return NULL; + + pfi = wglGetPixelFormat( hdc ); + if (pfi == 0) + return NULL; + + pf = pixelformat_get_info( pfi - 1 ); + + ctx = CALLOC_STRUCT( wgl_context ); + if (ctx == NULL) + return NULL; + + ctx->hdc = hdc; + ctx->color_bits = GetDeviceCaps( ctx->hdc, BITSPIXEL ); + + /* Create visual based on flags + */ + visual = _mesa_create_visual( + GL_TRUE, + (pf->flags & PF_FLAG_DOUBLEBUFFER) ? GL_TRUE : GL_FALSE, + GL_FALSE, + pf->color.redbits, + pf->color.greenbits, + pf->color.bluebits, + pf->alpha.alphabits, + 0, + pf->depth.depthbits, + pf->depth.stencilbits, + 0, + 0, + 0, + 0, + (pf->flags & PF_FLAG_MULTISAMPLED) ? wgl_query_samples() : 0 ); + if (visual == NULL) { + FREE( ctx ); + return NULL; + } + + pipe = stw_dev->stw_winsys->create_context( stw_dev->screen ); + if (!pipe) { + _mesa_destroy_visual( visual ); + FREE( ctx ); + return NULL; + } + + assert(!pipe->priv); + pipe->priv = hdc; + + ctx->st = st_create_context( pipe, visual, NULL ); + if (ctx->st == NULL) { + pipe->destroy( pipe ); + _mesa_destroy_visual( visual ); + FREE( ctx ); + return NULL; + } + ctx->st->ctx->DriverCtx = ctx; + + ctx->next = ctx_head; + ctx_head = ctx; + + return (HGLRC) ctx; +} + + +BOOL +stw_wgl_delete_context( + HGLRC hglrc ) +{ + struct wgl_context **link = &ctx_head; + struct wgl_context *ctx = ctx_head; + + while (ctx != NULL) { + if (ctx == (struct wgl_context *) hglrc) { + GLcontext *glctx = ctx->st->ctx; + GET_CURRENT_CONTEXT( glcurctx ); + struct stw_framebuffer *fb; + + /* Unbind current if deleting current context. + */ + if (glcurctx == glctx) + st_make_current( NULL, NULL, NULL ); + + fb = framebuffer_from_hdc( ctx->hdc ); + if (fb) + framebuffer_destroy( fb ); + + if (WindowFromDC( ctx->hdc ) != NULL) + ReleaseDC( WindowFromDC( ctx->hdc ), ctx->hdc ); + + st_destroy_context( ctx->st ); + + *link = ctx->next; + FREE( ctx ); + return TRUE; + } + + link = &ctx->next; + ctx = ctx->next; + } + + return FALSE; +} + +/* Find the width and height of the window named by hdc. + */ +static void +get_window_size( HDC hdc, GLuint *width, GLuint *height ) +{ + if (WindowFromDC( hdc )) { + RECT rect; + + GetClientRect( WindowFromDC( hdc ), &rect ); + *width = rect.right - rect.left; + *height = rect.bottom - rect.top; + } + else { + *width = GetDeviceCaps( hdc, HORZRES ); + *height = GetDeviceCaps( hdc, VERTRES ); + } +} + +HGLRC +stw_wgl_get_current_context( void ) +{ + return current_hrc; +} + +HDC +stw_wgl_get_current_dc( void ) +{ + return current_hdc; +} + +BOOL +stw_wgl_make_current( + HDC hdc, + HGLRC hglrc ) +{ + struct wgl_context *ctx = ctx_head; + GET_CURRENT_CONTEXT( glcurctx ); + struct stw_framebuffer *fb; + GLuint width = 0; + GLuint height = 0; + + current_hdc = hdc; + current_hrc = hglrc; + + if (hdc == NULL || hglrc == NULL) { + st_make_current( NULL, NULL, NULL ); + return TRUE; + } + + while (ctx != NULL) { + if (ctx == (struct wgl_context *) hglrc) + break; + ctx = ctx->next; + } + if (ctx == NULL) + return FALSE; + + /* Return if already current. + */ + if (glcurctx != NULL) { + struct wgl_context *curctx = (struct wgl_context *) glcurctx->DriverCtx; + + if (curctx != NULL && curctx == ctx && ctx->hdc == hdc) + return TRUE; + } + + fb = framebuffer_from_hdc( hdc ); + + if (hdc != NULL) + get_window_size( hdc, &width, &height ); + + /* Lazy creation of framebuffers. + */ + if (fb == NULL && ctx != NULL && hdc != NULL) { + GLvisual *visual = &ctx->st->ctx->Visual; + + fb = framebuffer_create( hdc, visual, width, height ); + if (fb == NULL) + return FALSE; + + fb->dib_hDC = CreateCompatibleDC( hdc ); + fb->hbmDIB = NULL; + fb->pbPixels = NULL; + } + + if (ctx && fb) { + st_make_current( ctx->st, fb->stfb, fb->stfb ); + framebuffer_resize( fb, width, height ); + ctx->hdc = hdc; + ctx->st->pipe->priv = hdc; + } + else { + /* Detach */ + st_make_current( NULL, NULL, NULL ); + } + + return TRUE; +} + +struct wgl_context * +wgl_context_from_hdc( + HDC hdc ) +{ + struct wgl_context *ctx = ctx_head; + + while (ctx != NULL) { + if (ctx->hdc == hdc) + return ctx; + ctx = ctx->next; + } + return NULL; +} |