wmesa.c

winNT技术操作系统,国外开放的原代码和LIUX一样

					   rgb[i][BCOMP]));
    }
    
}

/*
 * Write a horizontal span of pixels with a boolean mask.  The current color
 * is used for all pixels.
 */
static void write_mono_rgba_span_single(const GLcontext* ctx, 
					struct gl_renderbuffer *rb,
					GLuint n, GLint x, GLint y,
					const GLchan color[4], 
					const GLubyte mask[])
{
    GLuint i;
    PWMC pwc = Current;
    COLORREF colorref;

    (void) ctx;
    colorref = RGB(color[RCOMP], color[GCOMP], color[BCOMP]);
    y=FLIP(y);
    if (mask) {
	for (i=0; i<n; i++)
	    if (mask[i])
		SetPixel(pwc->hDC, x+i, y, colorref);
    }
    else
	for (i=0; i<n; i++)
	    SetPixel(pwc->hDC, x+i, y, colorref);

}

/* Write an array of RGBA pixels with a boolean mask. */
static void write_rgba_pixels_single(const GLcontext* ctx, 
				     struct gl_renderbuffer *rb,
				     GLuint n, 
				     const GLint x[], const GLint y[],
				     const GLubyte rgba[][4], 
				     const GLubyte mask[] )
{
    GLuint i;
    PWMC    pwc = Current;
    (void) ctx;
    for (i=0; i<n; i++)
	if (mask[i])
	    SetPixel(pwc->hDC, x[i], FLIP(y[i]), 
		     RGB(rgba[i][RCOMP], rgba[i][GCOMP], 
			 rgba[i][BCOMP]));
}



/*
 * Write an array of pixels with a boolean mask.  The current color
 * is used for all pixels.
 */
static void write_mono_rgba_pixels_single(const GLcontext* ctx, 
					  struct gl_renderbuffer *rb,
					  GLuint n,
					  const GLint x[], const GLint y[],
					  const GLchan color[4],
					  const GLubyte mask[] )
{
    GLuint i;
    PWMC    pwc = Current;
    COLORREF colorref;
    (void) ctx;
    colorref = RGB(color[RCOMP], color[GCOMP], color[BCOMP]);
    for (i=0; i<n; i++)
	if (mask[i])
	    SetPixel(pwc->hDC, x[i], FLIP(y[i]), colorref);
}

/* Read a horizontal span of color pixels. */
static void read_rgba_span_single(const GLcontext* ctx, 
				  struct gl_renderbuffer *rb,
				  GLuint n, GLint x, GLint y,
				  GLubyte rgba[][4] )
{
    GLuint i;
    COLORREF Color;
    y = FLIP(y);
    for (i=0; i<n; i++) {
	Color = GetPixel(Current->hDC, x+i, y);
	rgba[i][RCOMP] = GetRValue(Color);
	rgba[i][GCOMP] = GetGValue(Color);
	rgba[i][BCOMP] = GetBValue(Color);
	rgba[i][ACOMP] = 255;
    }
}


/* Read an array of color pixels. */
static void read_rgba_pixels_single(const GLcontext* ctx, 
				    struct gl_renderbuffer *rb,
				    GLuint n, const GLint x[], const GLint y[],
				    GLubyte rgba[][4])
{
  GLuint i;
  COLORREF Color;
  for (i=0; i<n; i++) {
      GLint y2 = FLIP(y[i]);
      Color = GetPixel(Current->hDC, x[i], y2);
      rgba[i][RCOMP] = GetRValue(Color);
      rgba[i][GCOMP] = GetGValue(Color);
      rgba[i][BCOMP] = GetBValue(Color);
      rgba[i][ACOMP] = 255;
  }
}

/*********************************************************************/

/* DOUBLE BUFFER 32-bit */

#define WMSETPIXEL32(pwc, y, x, r, g, b) { \
LPDWORD lpdw = ((LPDWORD)((pwc)->pbPixels + (pwc)->ScanWidth * (y)) + (x)); \
*lpdw = BGR32((r),(g),(b)); }



/* Write a horizontal span of RGBA color pixels with a boolean mask. */
static void write_rgba_span_32(const GLcontext* ctx, 
			       struct gl_renderbuffer *rb, 
			       GLuint n, GLint x, GLint y,
			       const GLubyte rgba[][4], 
			       const GLubyte mask[] )
{
    PWMC    pwc = Current;
    GLuint i;
    LPDWORD lpdw;

    (void) ctx;
    
    y=FLIP(y);
    lpdw = ((LPDWORD)(pwc->pbPixels + pwc->ScanWidth * y)) + x;
    if (mask) {
	for (i=0; i<n; i++)
	    if (mask[i])
                lpdw[i] = BGR32(rgba[i][RCOMP], rgba[i][GCOMP], 
				rgba[i][BCOMP]);
    }
    else {
	for (i=0; i<n; i++)
                *lpdw++ = BGR32(rgba[i][RCOMP], rgba[i][GCOMP], 
				rgba[i][BCOMP]);
    }
}


/* Write a horizontal span of RGB color pixels with a boolean mask. */
static void write_rgb_span_32(const GLcontext* ctx, 
			      struct gl_renderbuffer *rb, 
			      GLuint n, GLint x, GLint y,
			      const GLubyte rgb[][4], 
			      const GLubyte mask[] )
{
    PWMC    pwc = Current;
    GLuint i;
    LPDWORD lpdw;

    (void) ctx;
    
    y=FLIP(y);
    lpdw = ((LPDWORD)(pwc->pbPixels + pwc->ScanWidth * y)) + x;
    if (mask) {
	for (i=0; i<n; i++)
	    if (mask[i])
                lpdw[i] = BGR32(rgb[i][RCOMP], rgb[i][GCOMP], 
				rgb[i][BCOMP]);
    }
    else {
	for (i=0; i<n; i++)
                *lpdw++ = BGR32(rgb[i][RCOMP], rgb[i][GCOMP], 
				rgb[i][BCOMP]);
    }
}

/*
 * Write a horizontal span of pixels with a boolean mask.  The current color
 * is used for all pixels.
 */
static void write_mono_rgba_span_32(const GLcontext* ctx, 
				    struct gl_renderbuffer *rb,
				    GLuint n, GLint x, GLint y,
				    const GLchan color[4], 
				    const GLubyte mask[])
{
    LPDWORD lpdw;
    DWORD pixel;
    GLuint i;
    PWMC pwc = Current;
    lpdw = ((LPDWORD)(pwc->pbPixels + pwc->ScanWidth * y)) + x;
    y=FLIP(y);
    pixel = BGR32(color[RCOMP], color[GCOMP], color[BCOMP]);
    if (mask) {
	for (i=0; i<n; i++)
	    if (mask[i])
                lpdw[i] = pixel;
    }
    else
	for (i=0; i<n; i++)
                *lpdw++ = pixel;

}

/* Write an array of RGBA pixels with a boolean mask. */
static void write_rgba_pixels_32(const GLcontext* ctx, 
				 struct gl_renderbuffer *rb,
				 GLuint n, const GLint x[], const GLint y[],
				 const GLubyte rgba[][4], 
				 const GLubyte mask[])
{
    GLuint i;
    PWMC    pwc = Current;
    for (i=0; i<n; i++)
	if (mask[i])
	    WMSETPIXEL32(pwc, FLIP(y[i]), x[i],
			 rgba[i][RCOMP], rgba[i][GCOMP], rgba[i][BCOMP]);
}

/*
 * Write an array of pixels with a boolean mask.  The current color
 * is used for all pixels.
 */
static void write_mono_rgba_pixels_32(const GLcontext* ctx, 
				      struct gl_renderbuffer *rb,
				      GLuint n,
				      const GLint x[], const GLint y[],
				      const GLchan color[4],
				      const GLubyte mask[])
{
    GLuint i;
    PWMC pwc = Current;
    for (i=0; i<n; i++)
	if (mask[i])
	    WMSETPIXEL32(pwc, FLIP(y[i]),x[i],color[RCOMP],
			 color[GCOMP], color[BCOMP]);
}

/* Read a horizontal span of color pixels. */
static void read_rgba_span_32(const GLcontext* ctx, 
			      struct gl_renderbuffer *rb,
			      GLuint n, GLint x, GLint y,
			      GLubyte rgba[][4] )
{
    GLuint i;
    DWORD pixel;
    LPDWORD lpdw;
    PWMC pwc = Current;
    
    y = FLIP(y);
    lpdw = ((LPDWORD)(pwc->pbPixels + pwc->ScanWidth * y)) + x;
    for (i=0; i<n; i++) {
	pixel = lpdw[i];
	rgba[i][RCOMP] = (pixel & 0x00ff0000) >> 16;
	rgba[i][GCOMP] = (pixel & 0x0000ff00) >> 8;
	rgba[i][BCOMP] = (pixel & 0x000000ff);
	rgba[i][ACOMP] = 255;
    }
}


/* Read an array of color pixels. */
static void read_rgba_pixels_32(const GLcontext* ctx, 
				struct gl_renderbuffer *rb,
				GLuint n, const GLint x[], const GLint y[],
				GLubyte rgba[][4])
{
    GLuint i;
    DWORD pixel;
    LPDWORD lpdw;
    PWMC pwc = Current;

    for (i=0; i<n; i++) {
	GLint y2 = FLIP(y[i]);
	lpdw = ((LPDWORD)(pwc->pbPixels + pwc->ScanWidth * y2)) + x[i];
	pixel = lpdw[i];
	rgba[i][RCOMP] = (pixel & 0x00ff0000) >> 16;
	rgba[i][GCOMP] = (pixel & 0x0000ff00) >> 8;
	rgba[i][BCOMP] = (pixel & 0x000000ff);
	rgba[i][ACOMP] = 255;
  }
}


/*********************************************************************/

/* DOUBLE BUFFER 16-bit */

#define WMSETPIXEL16(pwc, y, x, r, g, b) { \
LPWORD lpw = ((LPWORD)((pwc)->pbPixels + (pwc)->ScanWidth * (y)) + (x)); \
*lpw = BGR16((r),(g),(b)); }



/* Write a horizontal span of RGBA color pixels with a boolean mask. */
static void write_rgba_span_16(const GLcontext* ctx, 
			       struct gl_renderbuffer *rb, 
			       GLuint n, GLint x, GLint y,
			       const GLubyte rgba[][4], 
			       const GLubyte mask[] )
{
    PWMC    pwc = Current;
    GLuint i;
    LPWORD lpw;

    (void) ctx;
    
    y=FLIP(y);
    lpw = ((LPWORD)(pwc->pbPixels + pwc->ScanWidth * y)) + x;
    if (mask) {
	for (i=0; i<n; i++)
	    if (mask[i])
                lpw[i] = BGR16(rgba[i][RCOMP], rgba[i][GCOMP], 
			       rgba[i][BCOMP]);
    }
    else {
	for (i=0; i<n; i++)
                *lpw++ = BGR16(rgba[i][RCOMP], rgba[i][GCOMP], 
			       rgba[i][BCOMP]);
    }
}


/* Write a horizontal span of RGB color pixels with a boolean mask. */
static void write_rgb_span_16(const GLcontext* ctx, 
			      struct gl_renderbuffer *rb, 
			      GLuint n, GLint x, GLint y,
			      const GLubyte rgb[][4], 
			      const GLubyte mask[] )
{
    PWMC    pwc = Current;
    GLuint i;
    LPWORD lpw;

    (void) ctx;
    
    y=FLIP(y);
    lpw = ((LPWORD)(pwc->pbPixels + pwc->ScanWidth * y)) + x;
    if (mask) {
	for (i=0; i<n; i++)
	    if (mask[i])
                lpw[i] = BGR16(rgb[i][RCOMP], rgb[i][GCOMP], 
			       rgb[i][BCOMP]);
    }
    else {
	for (i=0; i<n; i++)
                *lpw++ = BGR16(rgb[i][RCOMP], rgb[i][GCOMP], 
			       rgb[i][BCOMP]);
    }
}

/*
 * Write a horizontal span of pixels with a boolean mask.  The current color
 * is used for all pixels.
 */
static void write_mono_rgba_span_16(const GLcontext* ctx, 
				    struct gl_renderbuffer *rb,
				    GLuint n, GLint x, GLint y,
				    const GLchan color[4], 
				    const GLubyte mask[])
{
    LPWORD lpw;
    WORD pixel;
    GLuint i;
    PWMC pwc = Current;
    (void) ctx;
    lpw = ((LPWORD)(pwc->pbPixels + pwc->ScanWidth * y)) + x;
    y=FLIP(y);
    pixel = BGR16(color[RCOMP], color[GCOMP], color[BCOMP]);
    if (mask) {
	for (i=0; i<n; i++)
	    if (mask[i])
                lpw[i] = pixel;
    }
    else
	for (i=0; i<n; i++)
                *lpw++ = pixel;

}

/* Write an array of RGBA pixels with a boolean mask. */
static void write_rgba_pixels_16(const GLcontext* ctx, 
				 struct gl_renderbuffer *rb,
				 GLuint n, const GLint x[], const GLint y[],
				 const GLubyte rgba[][4], 
				 const GLubyte mask[])
{
    GLuint i;
    PWMC    pwc = Current;
    (void) ctx;
    for (i=0; i<n; i++)
	if (mask[i])
	    WMSETPIXEL16(pwc, FLIP(y[i]), x[i],