/*
* Mesa 3-D graphics library
- * Version: 7.11
*
* Copyright (C) 2011 Morgan Armand <morgan.devel@gmail.com>
*
* 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 NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 <stdio.h>
#include <windows.h>
#define WGL_WGLEXT_PROTOTYPES
#include "stw_icd.h"
#include "stw_context.h"
+#include "stw_device.h"
+#include "stw_ext_context.h"
+#include "util/u_debug.h"
+
+
+wglCreateContext_t wglCreateContext_func = 0;
+wglDeleteContext_t wglDeleteContext_func = 0;
+
+
+/**
+ * The implementation of this function is tricky. The OPENGL32.DLL library
+ * remaps the context IDs returned by our stw_create_context_attribs()
+ * function to different values returned to the caller of wglCreateContext().
+ * That is, DHGLRC (driver) handles are not equivalent to HGLRC (public)
+ * handles.
+ *
+ * So we need to generate a new HGLRC ID here. We do that by calling
+ * the regular wglCreateContext() function. Then, we replace the newly-
+ * created stw_context with a new stw_context that reflects the arguments
+ * to this function.
+ */
HGLRC WINAPI
wglCreateContextAttribsARB(HDC hDC, HGLRC hShareContext, const int *attribList)
{
+ HGLRC context;
+
int majorVersion = 1, minorVersion = 0, layerPlane = 0;
int contextFlags = 0x0;
int profileMask = WGL_CONTEXT_CORE_PROFILE_BIT_ARB;
int i;
BOOL done = FALSE;
+ const int contextFlagsAll = (WGL_CONTEXT_DEBUG_BIT_ARB |
+ WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB);
/* parse attrib_list */
if (attribList) {
default:
/* bad attribute */
SetLastError(ERROR_INVALID_PARAMETER);
- return NULL;
+ return 0;
}
}
}
+ /* check contextFlags */
+ if (contextFlags & ~contextFlagsAll) {
+ SetLastError(ERROR_INVALID_PARAMETER);
+ return NULL;
+ }
+
+ /* check profileMask */
+ if (profileMask != WGL_CONTEXT_CORE_PROFILE_BIT_ARB &&
+ profileMask != WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB &&
+ profileMask != WGL_CONTEXT_ES_PROFILE_BIT_EXT) {
+ SetLastError(ERROR_INVALID_PROFILE_ARB);
+ return NULL;
+ }
+
/* check version (generate ERROR_INVALID_VERSION_ARB if bad) */
- switch (majorVersion) {
- case 1:
- if (minorVersion < 0 || minorVersion > 5) {
- SetLastError(ERROR_INVALID_VERSION_ARB);
- return NULL;
- }
- break;
- case 2:
- if (minorVersion < 0 || minorVersion > 1) {
- SetLastError(ERROR_INVALID_VERSION_ARB);
- return NULL;
+ if (majorVersion <= 0 ||
+ minorVersion < 0 ||
+ (profileMask != WGL_CONTEXT_ES_PROFILE_BIT_EXT &&
+ ((majorVersion == 1 && minorVersion > 5) ||
+ (majorVersion == 2 && minorVersion > 1) ||
+ (majorVersion == 3 && minorVersion > 3) ||
+ (majorVersion == 4 && minorVersion > 5) ||
+ majorVersion > 4)) ||
+ (profileMask == WGL_CONTEXT_ES_PROFILE_BIT_EXT &&
+ ((majorVersion == 1 && minorVersion > 1) ||
+ (majorVersion == 2 && minorVersion > 0) ||
+ (majorVersion == 3 && minorVersion > 1) ||
+ majorVersion > 3))) {
+ SetLastError(ERROR_INVALID_VERSION_ARB);
+ return NULL;
+ }
+
+ if ((contextFlags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) &&
+ majorVersion < 3) {
+ SetLastError(ERROR_INVALID_VERSION_ARB);
+ return 0;
+ }
+
+ /* Get pointer to OPENGL32.DLL's wglCreate/DeleteContext() functions */
+ if (!wglCreateContext_func || !wglDeleteContext_func) {
+ /* Get the OPENGL32.DLL library */
+ HMODULE opengl_lib = GetModuleHandleA("opengl32.dll");
+ if (!opengl_lib) {
+ _debug_printf("wgl: GetModuleHandleA(\"opengl32.dll\") failed\n");
+ return 0;
}
- break;
- case 3:
- if (minorVersion < 0 || minorVersion > 3) {
- SetLastError(ERROR_INVALID_VERSION_ARB);
- return NULL;
+
+ /* Get pointer to wglCreateContext() function */
+ wglCreateContext_func = (wglCreateContext_t)
+ GetProcAddress(opengl_lib, "wglCreateContext");
+ if (!wglCreateContext_func) {
+ _debug_printf("wgl: failed to get wglCreateContext()\n");
+ return 0;
}
- break;
- case 4:
- if (minorVersion < 0 || minorVersion > 2) {
- SetLastError(ERROR_INVALID_VERSION_ARB);
- return NULL;
+
+ /* Get pointer to wglDeleteContext() function */
+ wglDeleteContext_func = (wglDeleteContext_t)
+ GetProcAddress(opengl_lib, "wglDeleteContext");
+ if (!wglDeleteContext_func) {
+ _debug_printf("wgl: failed to get wglDeleteContext()\n");
+ return 0;
}
- break;
- default:
- return NULL;
}
- if ((contextFlags & WGL_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB) && majorVersion < 3) {
- SetLastError(ERROR_INVALID_VERSION_ARB);
- return NULL;
+ /* Call wglCreateContext to get a valid context ID */
+ context = wglCreateContext_func(hDC);
+
+ if (context) {
+ /* Now replace the context we just created with a new one that reflects
+ * the attributes passed to this function.
+ */
+ DHGLRC dhglrc, c, share_dhglrc = 0;
+
+ /* Convert public HGLRC to driver DHGLRC */
+ if (stw_dev && stw_dev->callbacks.wglCbGetDhglrc) {
+ dhglrc = stw_dev->callbacks.wglCbGetDhglrc(context);
+ if (hShareContext)
+ share_dhglrc = stw_dev->callbacks.wglCbGetDhglrc(hShareContext);
+ }
+ else {
+ /* not using ICD */
+ dhglrc = (DHGLRC) context;
+ share_dhglrc = (DHGLRC) hShareContext;
+ }
+
+ c = stw_create_context_attribs(hDC, layerPlane, share_dhglrc,
+ majorVersion, minorVersion,
+ contextFlags, profileMask,
+ dhglrc);
+ if (!c) {
+ wglDeleteContext_func(context);
+ context = 0;
+ }
}
- /* check profileMask */
- if (profileMask != WGL_CONTEXT_CORE_PROFILE_BIT_ARB &&
- profileMask != WGL_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB) {
- SetLastError(ERROR_INVALID_PROFILE_ARB);
- return NULL;
+ return context;
+}
+
+
+/** Defined by WGL_ARB_make_current_read */
+BOOL APIENTRY
+wglMakeContextCurrentARB(HDC hDrawDC, HDC hReadDC, HGLRC hglrc)
+{
+ DHGLRC dhglrc = 0;
+
+ if (stw_dev && stw_dev->callbacks.wglCbGetDhglrc) {
+ /* Convert HGLRC to DHGLRC */
+ dhglrc = stw_dev->callbacks.wglCbGetDhglrc(hglrc);
}
- return (HGLRC) stw_create_context_attribs( hDC, layerPlane, (DHGLRC)(UINT_PTR)hShareContext,
- majorVersion, minorVersion, contextFlags, profileMask );
+ return stw_make_current(hDrawDC, hReadDC, dhglrc);
}
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