diff options
| -rw-r--r-- | src/mesa/drivers/windows/wmesa.c | 178 |
1 files changed, 98 insertions, 80 deletions
diff --git a/src/mesa/drivers/windows/wmesa.c b/src/mesa/drivers/windows/wmesa.c index bd07d08ed15..29b11089751 100644 --- a/src/mesa/drivers/windows/wmesa.c +++ b/src/mesa/drivers/windows/wmesa.c @@ -1,4 +1,4 @@ -/* $Id: wmesa.c,v 1.21 2001/10/04 19:04:56 kschultz Exp $ */ +/* $Id: wmesa.c,v 1.22 2001/10/05 15:47:28 kschultz Exp $ */ /* * Windows (Win32) device driver for Mesa 3.4 @@ -340,6 +340,12 @@ static void clear_color( GLcontext* ctx, const GLchan color[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, @@ -352,93 +358,106 @@ static clear(GLcontext* ctx, GLbitfield mask, LPWORD lpw = (LPWORD)Current->pbPixels; LPBYTE lpb = Current->pbPixels; int lines; + const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask; if (all){ x=y=0; width=Current->width; height=Current->height; } - if(Current->db_flag==GL_TRUE){ - UINT nBypp = Current->cColorBits / 8; - int i = 0; - int iSize = 0; - - if(nBypp ==1 ){ - /* Need rectification */ - 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)); - } - - 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++; - } - } + + + /* 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) { + /* 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; + } /* 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,y,x+width,y+height); + 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 */ - i = 0; - if (stereo_flag) - lines = height /2; - else - lines = height; - do { - memcpy(lpb, Current->pbPixels, iSize*4); - lpb += Current->ScanWidth; - i++; - } - while (i<lines-1); - } - else { /* For 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,y,x+width,y+height); - SelectObject(DC,Old_Pen); - SelectObject(DC,Old_Brush); - DeleteObject(Pen); - DeleteObject(Brush); - DD_RELEASEDC; - } - - /* TODO need to check masks - see osmesa */ - mask &= ~DD_FRONT_LEFT_BIT; + /* Call swrast if there is anything left to clear (like DEPTH) */ if (mask) - _swrast_Clear( ctx, mask, all, x, y, width, height ); - + _swrast_Clear( ctx, mask, all, x, y, width, height ); } - + static void enable( GLcontext* ctx, GLenum pname, GLboolean enable ) @@ -1413,7 +1432,6 @@ void wmSetPixel(PWMC pwc, int iScanLine, int iPixel, BYTE r, BYTE g, BYTE b) } else{ SetPixel(Current->hDC, iPixel, iScanLine, RGB(r,g,b)); - DD_RELEASEDC; } } |