| /* |
| * Mesa 3-D graphics library |
| * Version: 6.5.2 |
| * |
| * 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 |
| * BRIAN PAUL 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) { |
| _glthread_LOCK_MUTEX(_xmesa_lock); |
| XSync( xmesa->display, False ); |
| _glthread_UNLOCK_MUTEX(_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 <noz@xfree86.org> */ |
| 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); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glDrawPixels(PBO is mapped)"); |
| return; |
| } |
| 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); |
| } |
| } |
| 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); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glDrawPixels(PBO is mapped)"); |
| return; |
| } |
| 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); |
| } |
| } |
| 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. |
| */ |
| void |
| xmesa_update_state( struct gl_context *ctx, GLbitfield new_state ) |
| { |
| 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 ); |
| _vbo_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, GLint x, GLint y, GLsizei w, GLsizei h) |
| { |
| 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); |
| (void) x; |
| (void) y; |
| (void) w; |
| (void) h; |
| } |
| |
| |
| #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. |
| */ |
| #ifdef __VMS |
| #define suseconds_t unsigned int |
| #endif |
| 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->GetBufferSize = NULL; /* OBSOLETE */ |
| 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_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; |
| } |
