-/* $Id: wmesa.c,v 1.23 2001/11/01 22:44:47 kschultz Exp $ */
+/* $Id: wmesa.c,v 1.24 2002/01/15 18:14:34 kschultz Exp $ */
/*
* Windows (Win32) device driver for Mesa 3.4
}
+/*
+ * Clear the specified region of the color buffer using the clear color
+ * or index as specified by one of the two functions above.
+ *
+ * This procedure clears either the front and/or the back COLOR buffers.
+ * Only the "left" buffer is cleared since we are not stereo.
+ * Clearing of the other non-color buffers is left to the swrast.
+ * We also only clear the color buffers if the color masks are all 1's.
+ * Otherwise, we let swrast do it.
+ */
+
+static clear(GLcontext* ctx, GLbitfield mask,
+ GLboolean all, GLint x, GLint y, GLint width, GLint height)
+{
+ const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
+
+ if (all){
+ x=y=0;
+ width=Current->width;
+ height=Current->height;
+ }
+
+
+ /* sanity check - can't have right(stereo) buffers */
+ assert((mask & (DD_FRONT_RIGHT_BIT | DD_BACK_RIGHT_BIT)) == 0);
+
+ if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) {
+ if (mask & DD_BACK_LEFT_BIT) {
+#if defined(USE_GDI_TO_CLEAR)
+#if defined(DDRAW)
+ // D.R.S. 10/29/01 on my system (Pentium 4 with nvidia GeForce2 MX card,
+ // this is almose 100 times faster that the code below
+ HDC DC=NULL;
+ HPEN Pen=CreatePen(PS_SOLID,1,Current->clearpixel);
+ HBRUSH Brush=CreateSolidBrush(Current->clearpixel);
+ HPEN Old_Pen=NULL;
+ HBRUSH Old_Brush=NULL;
+ Current->lpDDSOffScreen->lpVtbl->Unlock(Current->lpDDSOffScreen,NULL);
+ Current->lpDDSOffScreen->lpVtbl->GetDC(Current->lpDDSOffScreen,&DC);
+ Old_Pen=SelectObject(DC,Pen);
+ Old_Brush=SelectObject(DC,Brush);
+ Rectangle(DC,x,y,x+width,y+height);
+ SelectObject(DC,Old_Pen);
+ SelectObject(DC,Old_Brush);
+ DeleteObject(Pen);
+ DeleteObject(Brush);
+ Current->lpDDSOffScreen->lpVtbl->ReleaseDC(Current->lpDDSOffScreen,DC);
+ while (Current->lpDDSOffScreen->lpVtbl->Lock(Current->lpDDSOffScreen,NULL, &(Current->ddsd), 0, NULL) == DDERR_WASSTILLDRAWING);
+
+ mask &= ~DD_BACK_LEFT_BIT;
+#else
+ /* single-buffer */
+ HDC DC=DD_GETDC;
+ HPEN Pen=CreatePen(PS_SOLID,1,Current->clearpixel);
+ HBRUSH Brush=CreateSolidBrush(Current->clearpixel);
+ HPEN Old_Pen=SelectObject(DC,Pen);
+ HBRUSH Old_Brush=SelectObject(DC,Brush);
+ Rectangle(DC,x+Current->rectSurface.left,Current->rectSurface.top+y,x+width+Current->rectSurface.left,y+height+Current->rectSurface.top);
+
+ SelectObject(DC,Old_Pen);
+ SelectObject(DC,Old_Brush);
+ DeleteObject(Pen);
+ DeleteObject(Brush);
+ DD_RELEASEDC;
+ mask &= ~DD_BACK_LEFT_BIT;
+#endif // DDRAW
+#else
+ DWORD dwColor;
+ WORD wColor;
+ BYTE bColor;
+ LPDWORD lpdw = (LPDWORD)Current->pbPixels;
+ LPWORD lpw = (LPWORD)Current->pbPixels;
+ LPBYTE lpb = Current->pbPixels;
+ int lines;
+ /* Double-buffering - clear back buffer */
+ UINT nBypp = Current->cColorBits / 8;
+ int i = 0;
+ int iSize = 0;
+ int mult = 4;
-/*
- * Clear the specified region of the color buffer using the clear color
- * or index as specified by one of the two functions above.
- *
- * This procedure clears either the front and/or the back COLOR buffers.
- * Only the "left" buffer is cleared since we are not stereo.
- * Clearing of the other non-color buffers is left to the swrast.
- * We also only clear the color buffers if the color masks are all 1's.
- * Otherwise, we let swrast do it.
- */
-
-static clear(GLcontext* ctx, GLbitfield mask,
- GLboolean all, GLint x, GLint y, GLint width, GLint height)
-{
- const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask;
-
- if (all){
- x=y=0;
- width=Current->width;
- height=Current->height;
- }
-
-
- /* sanity check - can't have right(stereo) buffers */
- assert((mask & (DD_FRONT_RIGHT_BIT | DD_BACK_RIGHT_BIT)) == 0);
-
- if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) {
- if (mask & DD_BACK_LEFT_BIT) {
-#if defined(USE_GDI_TO_CLEAR)
-#if defined(DDRAW)
- // D.R.S. 10/29/01 on my system (Pentium 4 with nvidia GeForce2 MX card,
- // this is almose 100 times faster that the code below
- HDC DC=NULL;
- HPEN Pen=CreatePen(PS_SOLID,1,Current->clearpixel);
- HBRUSH Brush=CreateSolidBrush(Current->clearpixel);
- HPEN Old_Pen=NULL;
- HBRUSH Old_Brush=NULL;
- Current->lpDDSOffScreen->lpVtbl->Unlock(Current->lpDDSOffScreen,NULL);
- Current->lpDDSOffScreen->lpVtbl->GetDC(Current->lpDDSOffScreen,&DC);
- Old_Pen=SelectObject(DC,Pen);
- Old_Brush=SelectObject(DC,Brush);
- Rectangle(DC,x,y,x+width,y+height);
- SelectObject(DC,Old_Pen);
- SelectObject(DC,Old_Brush);
- DeleteObject(Pen);
- DeleteObject(Brush);
- Current->lpDDSOffScreen->lpVtbl->ReleaseDC(Current->lpDDSOffScreen,DC);
- while (Current->lpDDSOffScreen->lpVtbl->Lock(Current->lpDDSOffScreen,NULL, &(Current->ddsd), 0, NULL) == DDERR_WASSTILLDRAWING);
- mask &= ~DD_BACK_LEFT_BIT;
-#else
- /* single-buffer */
- HDC DC=DD_GETDC;
- HPEN Pen=CreatePen(PS_SOLID,1,Current->clearpixel);
- HBRUSH Brush=CreateSolidBrush(Current->clearpixel);
- HPEN Old_Pen=SelectObject(DC,Pen);
- HBRUSH Old_Brush=SelectObject(DC,Brush);
- Rectangle(DC,x+Current->rectSurface.left,Current->rectSurface.top+y,x+width+Current->rectSurface.left,y+height+Current->rectSurface.top);
- SelectObject(DC,Old_Pen);
- SelectObject(DC,Old_Brush);
- DeleteObject(Pen);
- DeleteObject(Brush);
- DD_RELEASEDC;
- mask &= ~DD_BACK_LEFT_BIT;
-#endif // DDRAW
-#else
- DWORD dwColor;
- WORD wColor;
- BYTE bColor;
- LPDWORD lpdw = (LPDWORD)Current->pbPixels;
- LPWORD lpw = (LPWORD)Current->pbPixels;
- LPBYTE lpb = Current->pbPixels;
- int lines;
- /* Double-buffering - clear back buffer */
- UINT nBypp = Current->cColorBits / 8;
- int i = 0;
- int iSize = 0;
-
- assert(Current->db_flag==GL_TRUE); /* we'd better be double buffer */
- if(nBypp ==1 ){
- iSize = Current->width/4;
- bColor = BGR8(GetRValue(Current->clearpixel),
- GetGValue(Current->clearpixel),
- GetBValue(Current->clearpixel));
- wColor = MAKEWORD(bColor,bColor);
- dwColor = MAKELONG(wColor, wColor);
- }
- if(nBypp == 2){
- iSize = Current->width / 2;
- wColor = BGR16(GetRValue(Current->clearpixel),
- GetGValue(Current->clearpixel),
- GetBValue(Current->clearpixel));
- dwColor = MAKELONG(wColor, wColor);
- }
- else if(nBypp == 4){
- iSize = Current->width;
- dwColor = BGR32(GetRValue(Current->clearpixel),
- GetGValue(Current->clearpixel),
- GetBValue(Current->clearpixel));
- }
-
- /* clear a line */
- while(i < iSize){
- *lpdw = dwColor;
- lpdw++;
- i++;
- }
-
- /* This is the 24bit case */
- if (nBypp == 3) {
- iSize = Current->width *3/4;
- dwColor = BGR24(GetRValue(Current->clearpixel),
- GetGValue(Current->clearpixel),
- GetBValue(Current->clearpixel));
- while(i < iSize){
- *lpdw = dwColor;
- lpb += nBypp;
- lpdw = (LPDWORD)lpb;
- i++;
- }
- }
-
- i = 0;
- if (stereo_flag)
- lines = height /2;
- else
- lines = height;
- /* copy cleared line to other lines in buffer */
- do {
- memcpy(lpb, Current->pbPixels, iSize*4);
- lpb += Current->ScanWidth;
- i++;
- }
- while (i<lines-1);
- mask &= ~DD_BACK_LEFT_BIT;
-#endif // defined(USE_GDI_TO_CLEAR)
- } /* double-buffer */
+
+ assert(Current->db_flag==GL_TRUE); /* we'd better be double buffer */
+ if(nBypp ==1 ){
+ iSize = Current->width/4;
+ bColor = BGR8(GetRValue(Current->clearpixel),
+ GetGValue(Current->clearpixel),
+ GetBValue(Current->clearpixel));
+ wColor = MAKEWORD(bColor,bColor);
+ dwColor = MAKELONG(wColor, wColor);
+ }
+ else if(nBypp == 2){
+ iSize = Current->width / 2;
+ wColor = BGR16(GetRValue(Current->clearpixel),
+ GetGValue(Current->clearpixel),
+ GetBValue(Current->clearpixel));
+ dwColor = MAKELONG(wColor, wColor);
+ }
+ else if(nBypp == 3){
+ BYTE r, g, b;
+ r = GetRValue(Current->clearpixel);
+ g = GetGValue(Current->clearpixel);
+ b = GetBValue(Current->clearpixel);
+ iSize = Current->width;
+ while (i < iSize) {
+ *lpb++ = r;
+ *lpb++ = g;
+ *lpb++ = b;
+ i++;
+ }
+ lpb = Current->pbPixels + Current->ScanWidth;
+ mult = 3;
+ }
+ else if(nBypp == 4){
+ iSize = Current->width;
+ dwColor = BGR32(GetRValue(Current->clearpixel),
+ GetGValue(Current->clearpixel),
+ GetBValue(Current->clearpixel));
+ }
+
+ if (nBypp != 3)
+ {
+ /* clear a line */
+ while(i < iSize){
+ *lpdw = dwColor;
+ lpdw++;
+ i++;
+ }
+ }
+
+ i = 0;
+ if (stereo_flag)
+ lines = height /2;
+ else
+ lines = height;
+ /* copy cleared line to other lines in buffer */
+ do {
+ memcpy(lpb, Current->pbPixels, iSize*mult);
+ lpb += Current->ScanWidth;
+ i++;
+ }
+ while (i<lines-1);
+ mask &= ~DD_BACK_LEFT_BIT;
+#endif // defined(USE_GDI_TO_CLEAR)
+ } /* double-buffer */
- if (mask & DD_FRONT_LEFT_BIT) {
- /* single-buffer */
- HDC DC=DD_GETDC;
- HPEN Pen=CreatePen(PS_SOLID,1,Current->clearpixel);
- HBRUSH Brush=CreateSolidBrush(Current->clearpixel);
- HPEN Old_Pen=SelectObject(DC,Pen);
- HBRUSH Old_Brush=SelectObject(DC,Brush);
- Rectangle(DC,x+Current->rectSurface.left,Current->rectSurface.top+y,x+width+Current->rectSurface.left,y+height+Current->rectSurface.top);
- SelectObject(DC,Old_Pen);
- SelectObject(DC,Old_Brush);
- DeleteObject(Pen);
- DeleteObject(Brush);
- DD_RELEASEDC;
- mask &= ~DD_FRONT_LEFT_BIT;
- } /* single-buffer */
- } /* if masks are all 1's */
+ if (mask & DD_FRONT_LEFT_BIT) {
+ /* single-buffer */
+ HDC DC=DD_GETDC;
+ HPEN Pen=CreatePen(PS_SOLID,1,Current->clearpixel);
+ HBRUSH Brush=CreateSolidBrush(Current->clearpixel);
+ HPEN Old_Pen=SelectObject(DC,Pen);
+ HBRUSH Old_Brush=SelectObject(DC,Brush);
+ Rectangle(DC,x+Current->rectSurface.left,Current->rectSurface.top+y,x+width+Current->rectSurface.left,y+height+Current->rectSurface.top);
+
+ SelectObject(DC,Old_Pen);
+ SelectObject(DC,Old_Brush);
+ DeleteObject(Pen);
+ DeleteObject(Brush);
+ DD_RELEASEDC;
+ mask &= ~DD_FRONT_LEFT_BIT;
+ } /* single-buffer */
+ } /* if masks are all 1's */
- /* Call swrast if there is anything left to clear (like DEPTH) */
- if (mask)
- _swrast_Clear( ctx, mask, all, x, y, width, height );
-}
-
+ /* Call swrast if there is anything left to clear (like DEPTH) */
+ if (mask)
+ _swrast_Clear( ctx, mask, all, x, y, width, height );
+}
static void enable( GLcontext* ctx, GLenum pname, GLboolean enable )
projects / mesa.git / commitdiff