diff options
Diffstat (limited to 'nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/windows/gdi/wmesa.c')
| -rw-r--r-- | nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/windows/gdi/wmesa.c | 1184 |
1 files changed, 1184 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/windows/gdi/wmesa.c b/nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/windows/gdi/wmesa.c new file mode 100644 index 000000000..0265d80c0 --- /dev/null +++ b/nx-X11/extras/Mesa_6.4.2/src/mesa/drivers/windows/gdi/wmesa.c @@ -0,0 +1,1184 @@ +/* + * Windows (Win32/Win64) device driver for Mesa + * + */ + +#include "wmesadef.h" +#include "colors.h" +#include <GL/wmesa.h> +#include "extensions.h" +#include "framebuffer.h" +#include "renderbuffer.h" +#include "drivers/common/driverfuncs.h" +#include "array_cache/acache.h" +#include "swrast/swrast.h" +#include "swrast_setup/swrast_setup.h" +#include "tnl/tnl.h" +#include "tnl/t_context.h" +#include "tnl/t_pipeline.h" + +#define FLIP(Y) (Current->height-(Y)-1) + +/* Static Data */ + +static PWMC Current = NULL; + +/* + * Every driver should implement a GetString function in order to + * return a meaningful GL_RENDERER string. + */ +static const GLubyte *wmesa_get_string(GLcontext *ctx, GLenum name) +{ + return (name == GL_RENDERER) ? + (GLubyte *) "Mesa Windows GDI Driver" : NULL; +} + +/* + * Determine the pixel format based on the pixel size. + */ +static void wmSetPixelFormat(PWMC pwc, HDC hDC) +{ + pwc->cColorBits = GetDeviceCaps(hDC, BITSPIXEL); + + // TEMP - only 16 and 32 bit targets are supported now + assert(pwc->cColorBits == 16 || + pwc->cColorBits == 32); + + switch(pwc->cColorBits){ + case 8: + pwc->pixelformat = PF_INDEX8; + break; + case 16: + pwc->pixelformat = PF_5R6G5B; + break; + case 32: + pwc->pixelformat = PF_8R8G8B; + break; + default: + pwc->pixelformat = PF_BADFORMAT; + } +} + +/* + * Create DIB for back buffer. + * We write into this memory with the span routines and then blit it + * to the window on a buffer swap. + */ + +BOOL wmCreateBackingStore(PWMC pwc, long lxSize, long lySize) +{ + HDC hdc = pwc->hDC; + LPBITMAPINFO pbmi = &(pwc->bmi); + HDC hic; + + assert(pwc->db_flag == GL_TRUE); + + pbmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + pbmi->bmiHeader.biWidth = lxSize; + pbmi->bmiHeader.biHeight= -lySize; + pbmi->bmiHeader.biPlanes = 1; + pbmi->bmiHeader.biBitCount = GetDeviceCaps(pwc->hDC, BITSPIXEL); + pbmi->bmiHeader.biCompression = BI_RGB; + pbmi->bmiHeader.biSizeImage = 0; + pbmi->bmiHeader.biXPelsPerMeter = 0; + pbmi->bmiHeader.biYPelsPerMeter = 0; + pbmi->bmiHeader.biClrUsed = 0; + pbmi->bmiHeader.biClrImportant = 0; + + pwc->cColorBits = pbmi->bmiHeader.biBitCount; + pwc->ScanWidth = (lxSize * (pwc->cColorBits / 8) + 3) & ~3; + + hic = CreateIC("display", NULL, NULL, NULL); + pwc->dib.hDC = CreateCompatibleDC(hic); + + pwc->hbmDIB = CreateDIBSection(hic, + &pwc->bmi, + DIB_RGB_COLORS, + (void **)&(pwc->pbPixels), + 0, + 0); + pwc->hOldBitmap = SelectObject(pwc->dib.hDC, pwc->hbmDIB); + + DeleteDC(hic); + + wmSetPixelFormat(pwc, pwc->hDC); + return TRUE; +} + +static wmDeleteBackingStore(PWMC pwc) +{ + if (pwc->hbmDIB) { + SelectObject(pwc->dib.hDC, pwc->hOldBitmap); + DeleteDC(pwc->dib.hDC); + DeleteObject(pwc->hbmDIB); + } +} + +static void wmesa_get_buffer_size(GLframebuffer *buffer, + GLuint *width, + GLuint *height ) +{ + *width = Current->width; + *height = Current->height; +} + + +static void wmesa_flush(GLcontext* ctx) +{ + if (Current->db_flag) { + BitBlt(Current->hDC, 0, 0, Current->width, Current->height, + Current->dib.hDC, 0, 0, SRCCOPY); + } + else { + /* Do nothing for single buffer */ + } +} + + +/**********************************************************************/ +/***** CLEAR Functions *****/ +/**********************************************************************/ + +/* If we do not implement these, Mesa clears the buffers via the pixel + * span writing interface, which is very slow for a clear operation. + */ + +/* + * Set the color index used to clear the color buffer. + */ +static void clear_index(GLcontext* ctx, GLuint index) +{ + /* Note that indexed mode is not supported yet */ + Current->clearColorRef = RGB(0,0,0); +} + +/* + * Set the color used to clear the color buffer. + */ +static void clear_color(GLcontext* ctx, const GLfloat color[4]) +{ + GLubyte col[3]; + UINT bytesPerPixel = Current->cColorBits / 8; + + CLAMPED_FLOAT_TO_UBYTE(col[0], color[0]); + CLAMPED_FLOAT_TO_UBYTE(col[1], color[1]); + CLAMPED_FLOAT_TO_UBYTE(col[2], color[2]); + Current->clearColorRef = RGB(col[0], col[1], col[2]); + DeleteObject(Current->clearPen); + DeleteObject(Current->clearBrush); + Current->clearPen = CreatePen(PS_SOLID, 1, Current->clearColorRef); + Current->clearBrush = CreateSolidBrush(Current->clearColorRef); +} + + +/* + * 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. + */ + +static void clear(GLcontext* ctx, + GLbitfield mask, + GLboolean all, + GLint x, GLint y, + GLint width, GLint height) +{ + int done = 0; + + /* Let swrast do all the work if the masks are not set to + * clear all channels. */ + if (ctx->Color.ColorMask[0] != 0xff || + ctx->Color.ColorMask[1] != 0xff || + ctx->Color.ColorMask[2] != 0xff || + ctx->Color.ColorMask[3] != 0xff) { + _swrast_Clear(ctx, mask, all, x, y, width, height); + return; + } + + /* 'all' means clear the entire window */ + if (all) { + x = y = 0; + width = Current->width; + height = Current->height; + } + + /* Back buffer */ + if (mask & BUFFER_BIT_BACK_LEFT) { + + int i, rowSize; + UINT bytesPerPixel = Current->cColorBits / 8; + LPBYTE lpb, clearRow; + LPWORD lpw; + BYTE bColor; + WORD wColor; + BYTE r, g, b; + DWORD dwColor; + LPDWORD lpdw; + + /* Try for a fast clear - clearing entire buffer with a single + * byte value. */ + if (all) { /* entire buffer */ + /* Now check for an easy clear value */ + switch (bytesPerPixel) { + case 1: + bColor = BGR8(GetRValue(Current->clearColorRef), + GetGValue(Current->clearColorRef), + GetBValue(Current->clearColorRef)); + memset(Current->pbPixels, bColor, + Current->ScanWidth * height); + done = 1; + break; + case 2: + wColor = BGR16(GetRValue(Current->clearColorRef), + GetGValue(Current->clearColorRef), + GetBValue(Current->clearColorRef)); + if (((wColor >> 8) & 0xff) == (wColor & 0xff)) { + memset(Current->pbPixels, wColor & 0xff, + Current->ScanWidth * height); + done = 1; + } + break; + case 3: + /* fall through */ + case 4: + if (GetRValue(Current->clearColorRef) == + GetGValue(Current->clearColorRef) && + GetRValue(Current->clearColorRef) == + GetBValue(Current->clearColorRef)) { + memset(Current->pbPixels, + GetRValue(Current->clearColorRef), + Current->ScanWidth * height); + done = 1; + } + break; + default: + break; + } + } /* all */ + + if (!done) { + /* Need to clear a row at a time. Begin by setting the first + * row in the area to be cleared to the clear color. */ + + clearRow = Current->pbPixels + + Current->ScanWidth * FLIP(y) + + bytesPerPixel * x; + switch (bytesPerPixel) { + case 1: + lpb = clearRow; + bColor = BGR8(GetRValue(Current->clearColorRef), + GetGValue(Current->clearColorRef), + GetBValue(Current->clearColorRef)); + memset(lpb, bColor, width); + break; + case 2: + lpw = (LPWORD)clearRow; + wColor = BGR16(GetRValue(Current->clearColorRef), + GetGValue(Current->clearColorRef), + GetBValue(Current->clearColorRef)); + for (i=0; i<width; i++) + *lpw++ = wColor; + break; + case 3: + lpb = clearRow; + r = GetRValue(Current->clearColorRef); + g = GetGValue(Current->clearColorRef); + b = GetBValue(Current->clearColorRef); + for (i=0; i<width; i++) { + *lpb++ = b; + *lpb++ = g; + *lpb++ = r; + } + break; + case 4: + lpdw = (LPDWORD)clearRow; + dwColor = BGR32(GetRValue(Current->clearColorRef), + GetGValue(Current->clearColorRef), + GetBValue(Current->clearColorRef)); + for (i=0; i<width; i++) + *lpdw++ = dwColor; + break; + default: + break; + } /* switch */ + + /* copy cleared row to other rows in buffer */ + lpb = clearRow - Current->ScanWidth; + rowSize = width * bytesPerPixel; + for (i=1; i<height; i++) { + memcpy(lpb, clearRow, rowSize); + lpb -= Current->ScanWidth; + } + } /* not done */ + mask &= ~BUFFER_BIT_BACK_LEFT; + } /* back buffer */ + + /* front buffer */ + if (mask & BUFFER_BIT_FRONT_LEFT) { + HDC DC = Current->hDC; + HPEN Old_Pen = SelectObject(DC, Current->clearPen); + HBRUSH Old_Brush = SelectObject(DC, Current->clearBrush); + Rectangle(DC, + x, + FLIP(y), + x + width + 1, + FLIP(y) - height + 1); + SelectObject(DC, Old_Pen); + SelectObject(DC, Old_Brush); + mask &= ~BUFFER_BIT_FRONT_LEFT; + } /* front buffer */ + + /* Call swrast if there is anything left to clear (like DEPTH) */ + if (mask) + _swrast_Clear(ctx, mask, all, x, y, width, height); + +} + + +/**********************************************************************/ +/***** PIXEL Functions *****/ +/**********************************************************************/ + +/* SINGLE BUFFER */ + +/* These are slow, but work with all non-indexed visual types */ + +/* Write a horizontal span of RGBA color pixels with a boolean mask. */ +static void write_rgba_span_single(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; + + (void) ctx; + y=FLIP(y); + if (mask) { + for (i=0; i<n; i++) + if (mask[i]) + SetPixel(pwc->hDC, x+i, y, RGB(rgba[i][RCOMP], rgba[i][GCOMP], + rgba[i][BCOMP])); + } + else { + for (i=0; i<n; i++) + SetPixel(pwc->hDC, x+i, y, RGB(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_single(const GLcontext* ctx, + struct gl_renderbuffer *rb, + GLuint n, GLint x, GLint y, + const GLubyte rgb[][3], + const GLubyte mask[] ) +{ + PWMC pwc = Current; + GLuint i; + + (void) ctx; + y=FLIP(y); + if (mask) { + for (i=0; i<n; i++) + if (mask[i]) + SetPixel(pwc->hDC, x+i, y, RGB(rgb[i][RCOMP], rgb[i][GCOMP], + rgb[i][BCOMP])); + } + else { + for (i=0; i<n; i++) + SetPixel(pwc->hDC, x+i, y, RGB(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_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], + 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_16(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; + (void) ctx; + for (i=0; i<n; i++) + if (mask[i]) + WMSETPIXEL16(pwc, FLIP(y[i]),x[i],color[RCOMP], + color[GCOMP], color[BCOMP]); +} + +/* Read a horizontal span of color pixels. */ +static void read_rgba_span_16(const GLcontext* ctx, + struct gl_renderbuffer *rb, + GLuint n, GLint x, GLint y, + GLubyte rgba[][4] ) +{ + GLuint i, pixel; + LPWORD lpw; + PWMC pwc = Current; + + y = FLIP(y); + lpw = ((LPWORD)(pwc->pbPixels + pwc->ScanWidth * y)) + x; + for (i=0; i<n; i++) { + pixel = lpw[i]; + /* Windows uses 5,5,5 for 16-bit */ + rgba[i][RCOMP] = (pixel & 0x7c00) >> 7; + rgba[i][GCOMP] = (pixel & 0x03e0) >> 2; + rgba[i][BCOMP] = (pixel & 0x001f) << 3; + rgba[i][ACOMP] = 255; + } +} + + +/* Read an array of color pixels. */ +static void read_rgba_pixels_16(const GLcontext* ctx, + struct gl_renderbuffer *rb, + GLuint n, const GLint x[], const GLint y[], + GLubyte rgba[][4]) +{ + GLuint i, pixel; + LPWORD lpw; + PWMC pwc = Current; + + for (i=0; i<n; i++) { + GLint y2 = FLIP(y[i]); + lpw = ((LPWORD)(pwc->pbPixels + pwc->ScanWidth * y2)) + x[i]; + pixel = lpw[i]; + /* Windows uses 5,5,5 for 16-bit */ + rgba[i][RCOMP] = (pixel & 0x7c00) >> 7; + rgba[i][GCOMP] = (pixel & 0x03e0) >> 2; + rgba[i][BCOMP] = (pixel & 0x001f) << 3; + rgba[i][ACOMP] = 255; + } +} + + + + +/**********************************************************************/ +/***** BUFFER Functions *****/ +/**********************************************************************/ + + + + +static void +wmesa_delete_renderbuffer(struct gl_renderbuffer *rb) +{ + _mesa_free(rb); +} + +static GLboolean +wmesa_renderbuffer_storage(GLcontext *ctx, + struct gl_renderbuffer *rb, + GLenum internalFormat, + GLuint width, + GLuint height) +{ + return GL_TRUE; +} + +/** + * Called by ctx->Driver.ResizeBuffers() + * Resize the front/back colorbuffers to match the latest window size. + */ +static void +wmesa_resize_buffers(GLcontext *ctx, GLframebuffer *buffer, + GLuint width, GLuint height) +{ + if (Current->width != width || Current->height != height) { + Current->width = width; + Current->height = height; + /* Realloc back buffer */ + if (Current->db_flag) { + wmDeleteBackingStore(Current); + wmCreateBackingStore(Current, width, height); + } + } + _mesa_resize_framebuffer(ctx, buffer, width, height); +} + + +/** + * Called by glViewport. + * This is a good time for us to poll the current window size and adjust + * our renderbuffers to match the current window size. + * Remember, we have no opportunity to respond to conventional + * resize events since the driver has no event loop. + * Thus, we poll. + * Note that this trick isn't fool-proof. If the application never calls + * glViewport, our notion of the current window size may be incorrect. + */ +static void wmesa_viewport(GLcontext *ctx, + GLint x, GLint y, + GLsizei width, GLsizei height) +{ + if (Current->width != width || Current->height != height) { + wmesa_resize_buffers(ctx, ctx->WinSysDrawBuffer, width, height); + ctx->NewState |= _NEW_BUFFERS; /* to update scissor / window bounds */ + } +} + + + + +/** + * Called when the driver should update it's state, based on the new_state + * flags. + */ +static void wmesa_update_state(GLcontext *ctx, GLuint new_state) +{ + _swrast_InvalidateState(ctx, new_state); + _swsetup_InvalidateState(ctx, new_state); + _ac_InvalidateState(ctx, new_state); + _tnl_InvalidateState(ctx, new_state); + + /* TODO - need code to update the span functions in case the + * renderer changes the target buffer (like a DB app writing to + * the front buffer). */ +} + + + + + +/**********************************************************************/ +/***** WMESA Functions *****/ +/**********************************************************************/ + +WMesaContext WMesaCreateContext(HDC hDC, + HPALETTE* Pal, + GLboolean rgb_flag, + GLboolean db_flag, + GLboolean alpha_flag) +{ + WMesaContext c; + struct dd_function_table functions; + struct gl_renderbuffer *rb; + + (void) Pal; + + /* Indexed mode not supported */ + if (!rgb_flag) + return NULL; + + c = CALLOC_STRUCT(wmesa_context); + if (!c) + return NULL; + + /* Support memory and device contexts */ + if(WindowFromDC(hDC) != NULL) { + c->hDC = GetDC(WindowFromDC(hDC)); + } + else { + c->hDC = hDC; + } + c->width = GetDeviceCaps(c->hDC, HORZRES); + c->height = GetDeviceCaps(c->hDC, VERTRES); + c->clearPen = CreatePen(PS_SOLID, 1, 0); + c->clearBrush = CreateSolidBrush(0); + + /* Create back buffer if double buffered */ + if (db_flag) { + c->db_flag = 1; + wmCreateBackingStore(c, c->width, c->height); + + } + + c->gl_visual = _mesa_create_visual(rgb_flag, + db_flag, /* db_flag */ + GL_FALSE, /* stereo */ + 8,8,8, /* color RGB */ + alpha_flag ? 8 : 0, /* color A */ + 0, /* index bits */ + DEFAULT_SOFTWARE_DEPTH_BITS, /* depth_bits */ + 8, /* stencil_bits */ + 16,16,16, /* accum RGB */ + alpha_flag ? 16 : 0, /* accum A */ + 1); + + if (!c->gl_visual) { + _mesa_free(c); + return NULL; + } + + /* Set up driver functions */ + _mesa_init_driver_functions(&functions); + /* Fill in required functions */ + functions.GetString = wmesa_get_string; + functions.UpdateState = wmesa_update_state; + functions.GetBufferSize = wmesa_get_buffer_size; + functions.Flush = wmesa_flush; + + functions.Clear = clear; + functions.ClearIndex = clear_index; + functions.ClearColor = clear_color; + + functions.ResizeBuffers = wmesa_resize_buffers; + functions.Viewport = wmesa_viewport; + + /* allocate a new Mesa context */ + c->gl_ctx = _mesa_create_context(c->gl_visual, NULL, + &functions, (void *)c); + if (!c->gl_ctx) { + _mesa_destroy_visual( c->gl_visual ); + _mesa_free(c); + return NULL; + } + + _mesa_enable_sw_extensions(c->gl_ctx); + _mesa_enable_1_3_extensions(c->gl_ctx); + _mesa_enable_1_4_extensions(c->gl_ctx); + _mesa_enable_1_5_extensions(c->gl_ctx); + _mesa_enable_2_0_extensions(c->gl_ctx); + + c->gl_buffer = _mesa_create_framebuffer(c->gl_visual); + if (!c->gl_buffer) { + _mesa_destroy_visual(c->gl_visual); + _mesa_free_context_data(c->gl_ctx); + _mesa_free(c); + return NULL; + } + + rb = CALLOC_STRUCT(gl_renderbuffer); + + if (!rb) { + _mesa_destroy_visual(c->gl_visual); + _mesa_destroy_framebuffer(c->gl_buffer); + _mesa_free_context_data(c->gl_ctx); + _mesa_free(c); + return NULL; + } + + _mesa_init_renderbuffer(rb, (GLuint)0); + + rb->_BaseFormat = GL_RGBA; + rb->InternalFormat = GL_RGBA; + rb->DataType = CHAN_TYPE; + rb->Delete = wmesa_delete_renderbuffer; + rb->AllocStorage = wmesa_renderbuffer_storage; + + if (db_flag) { + switch(c->cColorBits) { + case 16: + rb->PutRow = write_rgba_span_16; + rb->PutRowRGB = write_rgb_span_16; + rb->PutMonoRow = write_mono_rgba_span_16; + rb->PutValues = write_rgba_pixels_16; + rb->PutMonoValues = write_mono_rgba_pixels_16; + rb->GetRow = read_rgba_span_16; + rb->GetValues = read_rgba_pixels_16; + break; + case 32: + rb->PutRow = write_rgba_span_32; + rb->PutRowRGB = write_rgb_span_32; + rb->PutMonoRow = write_mono_rgba_span_32; + rb->PutValues = write_rgba_pixels_32; + rb->PutMonoValues = write_mono_rgba_pixels_32; + rb->GetRow = read_rgba_span_32; + rb->GetValues = read_rgba_pixels_32; + break; + default: + break; + } + _mesa_add_renderbuffer(c->gl_buffer, BUFFER_BACK_LEFT, rb); + } + else { /* single buffer */ + rb->PutRow = write_rgba_span_single; + rb->PutRowRGB = write_rgb_span_single; + rb->PutMonoRow = write_mono_rgba_span_single; + rb->PutValues = write_rgba_pixels_single; + rb->PutMonoValues = write_mono_rgba_pixels_single; + rb->GetRow = read_rgba_span_single; + rb->GetValues = read_rgba_pixels_single; + _mesa_add_renderbuffer(c->gl_buffer, BUFFER_FRONT_LEFT, rb); + } + + _mesa_add_soft_renderbuffers(c->gl_buffer, + GL_FALSE, /* color */ + c->gl_visual->depthBits > 0, + c->gl_visual->stencilBits > 0, + c->gl_visual->accumRedBits > 0, + alpha_flag, + GL_FALSE); + + /* Initialize the software rasterizer and helper modules. */ + if (!_swrast_CreateContext(c->gl_ctx) || + !_ac_CreateContext(c->gl_ctx) || + !_tnl_CreateContext(c->gl_ctx) || + !_swsetup_CreateContext(c->gl_ctx)) { + _mesa_destroy_visual(c->gl_visual); + _mesa_destroy_framebuffer(c->gl_buffer); + _mesa_free_context_data(c->gl_ctx); + _mesa_free(c); + return NULL; + } + + _swsetup_Wakeup(c->gl_ctx); + + TNL_CONTEXT(c->gl_ctx)->Driver.RunPipeline = _tnl_run_pipeline; + + return c; +} + +void WMesaDestroyContext( void ) +{ + WMesaContext c = Current; + + WMesaMakeCurrent(NULL); + + /* Release for device, not memory contexts */ + if(WindowFromDC(c->hDC) != NULL) { + ReleaseDC(WindowFromDC(c->hDC), c->hDC); + } + DeleteObject(c->clearPen); + DeleteObject(c->clearBrush); + + if (c->db_flag) + wmDeleteBackingStore(c); + + _swsetup_DestroyContext(c->gl_ctx); + _tnl_DestroyContext(c->gl_ctx); + _ac_DestroyContext(c->gl_ctx); + _swrast_DestroyContext(c->gl_ctx); + + _mesa_destroy_visual(c->gl_visual); + _mesa_destroy_framebuffer(c->gl_buffer); + _mesa_free_context_data(c->gl_ctx); + _mesa_free(c->gl_ctx); + _mesa_free(c); +} + + +void WMesaMakeCurrent(WMesaContext c) +{ + /* return if already current */ + if (Current == c) + return; + + if (Current = c) + _mesa_make_current(c->gl_ctx, c->gl_buffer, c->gl_buffer); +} + + +void WMesaSwapBuffers( void ) +{ + GET_CURRENT_CONTEXT(ctx); + + /* If we're swapping the buffer associated with the current context + * we have to flush any pending rendering commands first. + */ + if (Current && Current->gl_ctx == ctx) + _mesa_notifySwapBuffers(ctx); + + if (Current->db_flag) + wmesa_flush(ctx); +} + +/**********************************************************************/ +/***** END *****/ +/**********************************************************************/ |