/* * Mesa 3-D graphics library * * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * 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 * 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. */ /** * \file xm_dd.h * General device driver functions for Xlib driver. */ #include "glxheader.h" #include "main/bufferobj.h" #include "main/context.h" #include "main/colormac.h" #include "main/fbobject.h" #include "main/macros.h" #include "main/mipmap.h" #include "main/image.h" #include "main/imports.h" #include "main/mtypes.h" #include "main/pbo.h" #include "main/texformat.h" #include "swrast/swrast.h" #include "swrast/s_context.h" #include "swrast_setup/swrast_setup.h" #include "tnl/tnl.h" #include "tnl/t_context.h" #include "drivers/common/meta.h" #include "xmesaP.h" static void finish_or_flush( struct gl_context *ctx ) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); if (xmesa) { mtx_lock(&_xmesa_lock); XSync( xmesa->display, False ); mtx_unlock(&_xmesa_lock); } } /* Implements glColorMask() */ static void color_mask(struct gl_context *ctx, GLboolean rmask, GLboolean gmask, GLboolean bmask, GLboolean amask) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); XMesaBuffer xmbuf; const int xclass = xmesa->xm_visual->visualType; (void) amask; if (_mesa_is_user_fbo(ctx->DrawBuffer)) return; xmbuf = XMESA_BUFFER(ctx->DrawBuffer); if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) { unsigned long m; if (rmask && gmask && bmask) { m = ((unsigned long)~0L); } else { m = 0; if (rmask) m |= GET_REDMASK(xmesa->xm_visual); if (gmask) m |= GET_GREENMASK(xmesa->xm_visual); if (bmask) m |= GET_BLUEMASK(xmesa->xm_visual); } XMesaSetPlaneMask( xmesa->display, xmbuf->cleargc, m ); } } /**********************************************************************/ /*** glClear implementations ***/ /**********************************************************************/ /** * Clear the front or back color buffer, if it's implemented with a pixmap. */ static void clear_pixmap(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); assert(xmbuf); assert(xrb->pixmap); assert(xmesa); assert(xmesa->display); assert(xrb->pixmap); assert(xmbuf->cleargc); XMesaFillRectangle( xmesa->display, xrb->pixmap, xmbuf->cleargc, x, xrb->Base.Base.Height - y - height, width, height ); } static void clear_16bit_ximage( struct gl_context *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); GLuint pixel = (GLuint) xmesa->clearpixel; GLint i, j; if (xmesa->swapbytes) { pixel = ((pixel >> 8) & 0x00ff) | ((pixel << 8) & 0xff00); } for (j = 0; j < height; j++) { GLushort *ptr2 = PIXEL_ADDR2(xrb, x, y + j); for (i = 0; i < width; i++) { ptr2[i] = pixel; } } } /* Optimized code provided by Nozomi Ytow */ static void clear_24bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); const GLubyte r = xmesa->clearcolor[0]; const GLubyte g = xmesa->clearcolor[1]; const GLubyte b = xmesa->clearcolor[2]; if (r == g && g == b) { /* same value for all three components (gray) */ GLint j; for (j = 0; j < height; j++) { bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j); memset(ptr3, r, 3 * width); } } else { /* non-gray clear color */ GLint i, j; for (j = 0; j < height; j++) { bgr_t *ptr3 = PIXEL_ADDR3(xrb, x, y + j); for (i = 0; i < width; i++) { ptr3->r = r; ptr3->g = g; ptr3->b = b; ptr3++; } } } } static void clear_32bit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); register GLuint pixel = (GLuint) xmesa->clearpixel; if (!xrb->ximage) return; if (xmesa->swapbytes) { pixel = ((pixel >> 24) & 0x000000ff) | ((pixel >> 8) & 0x0000ff00) | ((pixel << 8) & 0x00ff0000) | ((pixel << 24) & 0xff000000); } if (width == xrb->Base.Base.Width && height == xrb->Base.Base.Height) { /* clearing whole buffer */ const GLuint n = xrb->Base.Base.Width * xrb->Base.Base.Height; GLuint *ptr4 = (GLuint *) xrb->ximage->data; if (pixel == 0) { /* common case */ memset(ptr4, pixel, 4 * n); } else { GLuint i; for (i = 0; i < n; i++) ptr4[i] = pixel; } } else { /* clearing scissored region */ GLint i, j; for (j = 0; j < height; j++) { GLuint *ptr4 = PIXEL_ADDR4(xrb, x, y + j); for (i = 0; i < width; i++) { ptr4[i] = pixel; } } } } static void clear_nbit_ximage(struct gl_context *ctx, struct xmesa_renderbuffer *xrb, GLint x, GLint y, GLint width, GLint height) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); XMesaImage *img = xrb->ximage; GLint i, j; /* TODO: optimize this */ y = YFLIP(xrb, y); for (j = 0; j < height; j++) { for (i = 0; i < width; i++) { XMesaPutPixel(img, x+i, y-j, xmesa->clearpixel); } } } static void clear_buffers(struct gl_context *ctx, GLbitfield buffers) { if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { /* this is a window system framebuffer */ const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask[0]; const XMesaContext xmesa = XMESA_CONTEXT(ctx); XMesaBuffer b = XMESA_BUFFER(ctx->DrawBuffer); const GLint x = ctx->DrawBuffer->_Xmin; const GLint y = ctx->DrawBuffer->_Ymin; const GLint width = ctx->DrawBuffer->_Xmax - x; const GLint height = ctx->DrawBuffer->_Ymax - y; _mesa_unclamped_float_rgba_to_ubyte(xmesa->clearcolor, ctx->Color.ClearColor.f); xmesa->clearpixel = xmesa_color_to_pixel(ctx, xmesa->clearcolor[0], xmesa->clearcolor[1], xmesa->clearcolor[2], xmesa->clearcolor[3], xmesa->xm_visual->undithered_pf); XMesaSetForeground(xmesa->display, b->cleargc, xmesa->clearpixel); /* we can't handle color or index masking */ if (*colorMask == 0xffffffff && ctx->Color.IndexMask == 0xffffffff) { if (buffers & BUFFER_BIT_FRONT_LEFT) { /* clear front color buffer */ struct gl_renderbuffer *frontRb = ctx->DrawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer; if (b->frontxrb == xmesa_renderbuffer(frontRb)) { /* renderbuffer is not wrapped - great! */ b->frontxrb->clearFunc(ctx, b->frontxrb, x, y, width, height); buffers &= ~BUFFER_BIT_FRONT_LEFT; } else { /* we can't directly clear an alpha-wrapped color buffer */ } } if (buffers & BUFFER_BIT_BACK_LEFT) { /* clear back color buffer */ struct gl_renderbuffer *backRb = ctx->DrawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer; if (b->backxrb == xmesa_renderbuffer(backRb)) { /* renderbuffer is not wrapped - great! */ b->backxrb->clearFunc(ctx, b->backxrb, x, y, width, height); buffers &= ~BUFFER_BIT_BACK_LEFT; } } } } if (buffers) _swrast_Clear(ctx, buffers); } /* XXX these functions haven't been tested in the Xserver environment */ /** * Check if we can do an optimized glDrawPixels into an 8R8G8B visual. */ static GLboolean can_do_DrawPixels_8R8G8B(struct gl_context *ctx, GLenum format, GLenum type) { if (format == GL_BGRA && type == GL_UNSIGNED_BYTE && ctx->DrawBuffer && _mesa_is_winsys_fbo(ctx->DrawBuffer) && ctx->Pixel.ZoomX == 1.0 && /* no zooming */ ctx->Pixel.ZoomY == 1.0 && ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) { const SWcontext *swrast = SWRAST_CONTEXT(ctx); if (swrast->NewState) _swrast_validate_derived( ctx ); if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ { struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0]; if (rb) { struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb); if (xrb && xrb->pixmap && /* drawing to pixmap or window */ _mesa_get_format_bits(xrb->Base.Base.Format, GL_ALPHA_BITS) == 0) { return GL_TRUE; } } } } return GL_FALSE; } /** * This function implements glDrawPixels() with an XPutImage call when * drawing to the front buffer (X Window drawable). * The image format must be GL_BGRA to match the PF_8R8G8B pixel format. */ static void xmesa_DrawPixels_8R8G8B( struct gl_context *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels ) { if (can_do_DrawPixels_8R8G8B(ctx, format, type)) { const SWcontext *swrast = SWRAST_CONTEXT( ctx ); struct gl_pixelstore_attrib clippedUnpack = *unpack; int dstX = x; int dstY = y; int w = width; int h = height; if (swrast->NewState) _swrast_validate_derived( ctx ); if (_mesa_is_bufferobj(unpack->BufferObj)) { /* unpack from PBO */ GLubyte *buf; if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, format, type, INT_MAX, pixels)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels(invalid PBO access)"); return; } buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, unpack->BufferObj->Size, GL_MAP_READ_BIT, unpack->BufferObj, MAP_INTERNAL); if (!buf) { return; /* error */ } pixels = ADD_POINTERS(buf, pixels); } if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); XMesaDisplay *dpy = xmesa->xm_visual->display; XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */ struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); const int srcX = clippedUnpack.SkipPixels; const int srcY = clippedUnpack.SkipRows; const int rowLength = clippedUnpack.RowLength; XMesaImage ximage; assert(xmesa->xm_visual->dithered_pf == PF_8R8G8B); assert(xmesa->xm_visual->undithered_pf == PF_8R8G8B); assert(dpy); assert(gc); /* This is a little tricky since all coordinates up to now have * been in the OpenGL bottom-to-top orientation. X is top-to-bottom * so we have to carefully compute the Y coordinates/addresses here. */ memset(&ximage, 0, sizeof(XMesaImage)); ximage.width = width; ximage.height = height; ximage.format = ZPixmap; ximage.data = (char *) pixels + ((srcY + h - 1) * rowLength + srcX) * 4; ximage.byte_order = LSBFirst; ximage.bitmap_unit = 32; ximage.bitmap_bit_order = LSBFirst; ximage.bitmap_pad = 32; ximage.depth = 32; ximage.bits_per_pixel = 32; ximage.bytes_per_line = -rowLength * 4; /* negative to flip image */ /* it seems we don't need to set the ximage.red/green/blue_mask fields */ /* flip Y axis for dest position */ dstY = YFLIP(xrb, dstY) - h + 1; XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h); } if (_mesa_is_bufferobj(unpack->BufferObj)) { ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL); } } else { /* software fallback */ _swrast_DrawPixels(ctx, x, y, width, height, format, type, unpack, pixels); } } /** * Check if we can do an optimized glDrawPixels into an 5R6G5B visual. */ static GLboolean can_do_DrawPixels_5R6G5B(struct gl_context *ctx, GLenum format, GLenum type) { if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5 && !ctx->Color.DitherFlag && /* no dithering */ ctx->DrawBuffer && _mesa_is_winsys_fbo(ctx->DrawBuffer) && ctx->Pixel.ZoomX == 1.0 && /* no zooming */ ctx->Pixel.ZoomY == 1.0 && ctx->_ImageTransferState == 0 /* no color tables, scale/bias, etc */) { const SWcontext *swrast = SWRAST_CONTEXT(ctx); if (swrast->NewState) _swrast_validate_derived( ctx ); if ((swrast->_RasterMask & ~CLIP_BIT) == 0) /* no blend, z-test, etc */ { struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0]; if (rb) { struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(rb); if (xrb && xrb->pixmap && /* drawing to pixmap or window */ _mesa_get_format_bits(xrb->Base.Base.Format, GL_ALPHA_BITS) == 0) { return GL_TRUE; } } } } return GL_FALSE; } /** * This function implements glDrawPixels() with an XPutImage call when * drawing to the front buffer (X Window drawable). The image format * must be GL_RGB and image type must be GL_UNSIGNED_SHORT_5_6_5 to * match the PF_5R6G5B pixel format. */ static void xmesa_DrawPixels_5R6G5B( struct gl_context *ctx, GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels ) { if (can_do_DrawPixels_5R6G5B(ctx, format, type)) { const SWcontext *swrast = SWRAST_CONTEXT( ctx ); struct gl_pixelstore_attrib clippedUnpack = *unpack; int dstX = x; int dstY = y; int w = width; int h = height; if (swrast->NewState) _swrast_validate_derived( ctx ); if (_mesa_is_bufferobj(unpack->BufferObj)) { /* unpack from PBO */ GLubyte *buf; if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, format, type, INT_MAX, pixels)) { _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawPixels(invalid PBO access)"); return; } buf = (GLubyte *) ctx->Driver.MapBufferRange(ctx, 0, unpack->BufferObj->Size, GL_MAP_READ_BIT, unpack->BufferObj, MAP_INTERNAL); if (!buf) { return; /* error */ } pixels = ADD_POINTERS(buf, pixels); } if (_mesa_clip_drawpixels(ctx, &dstX, &dstY, &w, &h, &clippedUnpack)) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); XMesaDisplay *dpy = xmesa->xm_visual->display; XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */ struct xmesa_renderbuffer *xrb = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); const int srcX = clippedUnpack.SkipPixels; const int srcY = clippedUnpack.SkipRows; const int rowLength = clippedUnpack.RowLength; XMesaImage ximage; assert(xmesa->xm_visual->undithered_pf == PF_5R6G5B); assert(dpy); assert(gc); /* This is a little tricky since all coordinates up to now have * been in the OpenGL bottom-to-top orientation. X is top-to-bottom * so we have to carefully compute the Y coordinates/addresses here. */ memset(&ximage, 0, sizeof(XMesaImage)); ximage.width = width; ximage.height = height; ximage.format = ZPixmap; ximage.data = (char *) pixels + ((srcY + h - 1) * rowLength + srcX) * 2; ximage.byte_order = LSBFirst; ximage.bitmap_unit = 16; ximage.bitmap_bit_order = LSBFirst; ximage.bitmap_pad = 16; ximage.depth = 16; ximage.bits_per_pixel = 16; ximage.bytes_per_line = -rowLength * 2; /* negative to flip image */ /* it seems we don't need to set the ximage.red/green/blue_mask fields */ /* flip Y axis for dest position */ dstY = YFLIP(xrb, dstY) - h + 1; XPutImage(dpy, xrb->pixmap, gc, &ximage, 0, 0, dstX, dstY, w, h); } if (unpack->BufferObj->Name) { ctx->Driver.UnmapBuffer(ctx, unpack->BufferObj, MAP_INTERNAL); } } else { /* software fallback */ _swrast_DrawPixels(ctx, x, y, width, height, format, type, unpack, pixels); } } /** * Determine if we can do an optimized glCopyPixels. */ static GLboolean can_do_CopyPixels(struct gl_context *ctx, GLenum type) { if (type == GL_COLOR && ctx->_ImageTransferState == 0 && /* no color tables, scale/bias, etc */ ctx->Pixel.ZoomX == 1.0 && /* no zooming */ ctx->Pixel.ZoomY == 1.0 && ctx->Color.DrawBuffer[0] == GL_FRONT && /* copy to front buf */ ctx->Pixel.ReadBuffer == GL_FRONT && /* copy from front buf */ ctx->ReadBuffer->_ColorReadBuffer && ctx->DrawBuffer->_ColorDrawBuffers[0]) { const SWcontext *swrast = SWRAST_CONTEXT( ctx ); if (swrast->NewState) _swrast_validate_derived( ctx ); if ((swrast->_RasterMask & ~CLIP_BIT) == 0x0 && ctx->ReadBuffer && ctx->ReadBuffer->_ColorReadBuffer && ctx->DrawBuffer && ctx->DrawBuffer->_ColorDrawBuffers[0]) { struct xmesa_renderbuffer *srcXrb = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer); struct xmesa_renderbuffer *dstXrb = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); if (srcXrb->pixmap && dstXrb->pixmap) { return GL_TRUE; } } } return GL_FALSE; } /** * Implement glCopyPixels for the front color buffer (or back buffer Pixmap) * for the color buffer. Don't support zooming, pixel transfer, etc. * We do support copying from one window to another, ala glXMakeCurrentRead. */ static void xmesa_CopyPixels( struct gl_context *ctx, GLint srcx, GLint srcy, GLsizei width, GLsizei height, GLint destx, GLint desty, GLenum type ) { if (can_do_CopyPixels(ctx, type)) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); XMesaDisplay *dpy = xmesa->xm_visual->display; XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); const XMesaGC gc = xmbuf->cleargc; /* effected by glColorMask */ struct xmesa_renderbuffer *srcXrb = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer); struct xmesa_renderbuffer *dstXrb = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); assert(dpy); assert(gc); /* Note: we don't do any special clipping work here. We could, * but X will do it for us. */ srcy = YFLIP(srcXrb, srcy) - height + 1; desty = YFLIP(dstXrb, desty) - height + 1; XCopyArea(dpy, srcXrb->pixmap, dstXrb->pixmap, gc, srcx, srcy, width, height, destx, desty); } else { _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type ); } } /* * Every driver should implement a GetString function in order to * return a meaningful GL_RENDERER string. */ static const GLubyte * get_string( struct gl_context *ctx, GLenum name ) { (void) ctx; switch (name) { case GL_RENDERER: return (const GLubyte *) "Mesa X11"; case GL_VENDOR: return NULL; default: return NULL; } } /* * We implement the glEnable function only because we care about * dither enable/disable. */ static void enable( struct gl_context *ctx, GLenum pname, GLboolean state ) { const XMesaContext xmesa = XMESA_CONTEXT(ctx); switch (pname) { case GL_DITHER: if (state) xmesa->pixelformat = xmesa->xm_visual->dithered_pf; else xmesa->pixelformat = xmesa->xm_visual->undithered_pf; break; default: ; /* silence compiler warning */ } } /** * Called when the driver should update its state, based on the new_state * flags. */ static void xmesa_update_state(struct gl_context *ctx) { GLbitfield new_state = ctx->NewState; const XMesaContext xmesa = XMESA_CONTEXT(ctx); /* Propagate statechange information to swrast and swrast_setup * modules. The X11 driver has no internal GL-dependent state. */ _swrast_InvalidateState( ctx, new_state ); _tnl_InvalidateState( ctx, new_state ); _swsetup_InvalidateState( ctx, new_state ); if (_mesa_is_user_fbo(ctx->DrawBuffer)) return; /* * GL_DITHER, GL_READ/DRAW_BUFFER, buffer binding state, etc. effect * renderbuffer span/clear funcs. * Check _NEW_COLOR to detect dither enable/disable. */ if (new_state & (_NEW_COLOR | _NEW_BUFFERS)) { XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); struct xmesa_renderbuffer *front_xrb, *back_xrb; front_xrb = xmbuf->frontxrb; if (front_xrb) { front_xrb->clearFunc = clear_pixmap; } back_xrb = xmbuf->backxrb; if (back_xrb) { if (xmbuf->backxrb->pixmap) { back_xrb->clearFunc = clear_pixmap; } else { switch (xmesa->xm_visual->BitsPerPixel) { case 16: back_xrb->clearFunc = clear_16bit_ximage; break; case 24: back_xrb->clearFunc = clear_24bit_ximage; break; case 32: back_xrb->clearFunc = clear_32bit_ximage; break; default: back_xrb->clearFunc = clear_nbit_ximage; break; } } } } } /** * Called by glViewport. * This is a good time for us to poll the current X window size and adjust * our renderbuffers to match the current window size. * Remember, we have no opportunity to respond to conventional * X Resize/StructureNotify events since the X 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. * That problem led to the GLX_MESA_resize_buffers extension. */ static void xmesa_viewport(struct gl_context *ctx) { XMesaContext xmctx = XMESA_CONTEXT(ctx); XMesaBuffer xmdrawbuf = XMESA_BUFFER(ctx->WinSysDrawBuffer); XMesaBuffer xmreadbuf = XMESA_BUFFER(ctx->WinSysReadBuffer); xmesa_check_and_update_buffer_size(xmctx, xmdrawbuf); xmesa_check_and_update_buffer_size(xmctx, xmreadbuf); } #if ENABLE_EXT_timer_query /* * The GL_EXT_timer_query extension is not enabled for the XServer * indirect renderer. Not sure about how/if wrapping of gettimeofday() * is done, etc. */ struct xmesa_query_object { struct gl_query_object Base; struct timeval StartTime; }; static struct gl_query_object * xmesa_new_query_object(struct gl_context *ctx, GLuint id) { struct xmesa_query_object *q = CALLOC_STRUCT(xmesa_query_object); if (q) { q->Base.Id = id; q->Base.Ready = GL_TRUE; } return &q->Base; } static void xmesa_begin_query(struct gl_context *ctx, struct gl_query_object *q) { if (q->Target == GL_TIME_ELAPSED_EXT) { struct xmesa_query_object *xq = (struct xmesa_query_object *) q; (void) gettimeofday(&xq->StartTime, NULL); } } /** * Return the difference between the two given times in microseconds. */ static GLuint64EXT time_diff(const struct timeval *t0, const struct timeval *t1) { GLuint64EXT seconds0 = t0->tv_sec & 0xff; /* 0 .. 255 seconds */ GLuint64EXT seconds1 = t1->tv_sec & 0xff; /* 0 .. 255 seconds */ GLuint64EXT nanosec0 = (seconds0 * 1000000 + t0->tv_usec) * 1000; GLuint64EXT nanosec1 = (seconds1 * 1000000 + t1->tv_usec) * 1000; return nanosec1 - nanosec0; } static void xmesa_end_query(struct gl_context *ctx, struct gl_query_object *q) { if (q->Target == GL_TIME_ELAPSED_EXT) { struct xmesa_query_object *xq = (struct xmesa_query_object *) q; struct timeval endTime; (void) gettimeofday(&endTime, NULL); /* result is in nanoseconds! */ q->Result = time_diff(&xq->StartTime, &endTime); } q->Ready = GL_TRUE; } #endif /* ENABLE_timer_query */ /** * Initialize the device driver function table with the functions * we implement in this driver. */ void xmesa_init_driver_functions( XMesaVisual xmvisual, struct dd_function_table *driver ) { driver->GetString = get_string; driver->UpdateState = xmesa_update_state; driver->Flush = finish_or_flush; driver->Finish = finish_or_flush; driver->ColorMask = color_mask; driver->Enable = enable; driver->Viewport = xmesa_viewport; if (TEST_META_FUNCS) { driver->Clear = _mesa_meta_Clear; driver->CopyPixels = _mesa_meta_CopyPixels; driver->BlitFramebuffer = _mesa_meta_and_swrast_BlitFramebuffer; driver->DrawPixels = _mesa_meta_DrawPixels; driver->Bitmap = _mesa_meta_Bitmap; } else { driver->Clear = clear_buffers; driver->CopyPixels = xmesa_CopyPixels; if (xmvisual->undithered_pf == PF_8R8G8B && xmvisual->dithered_pf == PF_8R8G8B && xmvisual->BitsPerPixel == 32) { driver->DrawPixels = xmesa_DrawPixels_8R8G8B; } else if (xmvisual->undithered_pf == PF_5R6G5B) { driver->DrawPixels = xmesa_DrawPixels_5R6G5B; } } driver->MapRenderbuffer = xmesa_MapRenderbuffer; driver->UnmapRenderbuffer = xmesa_UnmapRenderbuffer; driver->GenerateMipmap = _mesa_generate_mipmap; #if ENABLE_EXT_timer_query driver->NewQueryObject = xmesa_new_query_object; driver->BeginQuery = xmesa_begin_query; driver->EndQuery = xmesa_end_query; #endif } #define XMESA_NEW_POINT (_NEW_POINT | \ _NEW_RENDERMODE | \ _SWRAST_NEW_RASTERMASK) #define XMESA_NEW_LINE (_NEW_LINE | \ _NEW_TEXTURE | \ _NEW_LIGHT | \ _NEW_DEPTH | \ _NEW_RENDERMODE | \ _SWRAST_NEW_RASTERMASK) #define XMESA_NEW_TRIANGLE (_NEW_POLYGON | \ _NEW_TEXTURE | \ _NEW_LIGHT | \ _NEW_DEPTH | \ _NEW_RENDERMODE | \ _SWRAST_NEW_RASTERMASK) /** * Extend the software rasterizer with our line/point/triangle * functions. * Called during context creation only. */ void xmesa_register_swrast_functions( struct gl_context *ctx ) { SWcontext *swrast = SWRAST_CONTEXT( ctx ); swrast->choose_point = xmesa_choose_point; swrast->choose_line = xmesa_choose_line; swrast->choose_triangle = xmesa_choose_triangle; /* XXX these lines have no net effect. Remove??? */ swrast->InvalidatePointMask |= XMESA_NEW_POINT; swrast->InvalidateLineMask |= XMESA_NEW_LINE; swrast->InvalidateTriangleMask |= XMESA_NEW_TRIANGLE; }