diff options
Diffstat (limited to 'src/mesa/drivers/x11/xm_dd.c')
| -rw-r--r-- | src/mesa/drivers/x11/xm_dd.c | 1190 |
1 files changed, 1190 insertions, 0 deletions
diff --git a/src/mesa/drivers/x11/xm_dd.c b/src/mesa/drivers/x11/xm_dd.c new file mode 100644 index 0000000000..5edafb890b --- /dev/null +++ b/src/mesa/drivers/x11/xm_dd.c @@ -0,0 +1,1190 @@ +/* + * 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/buffers.h" +#include "main/context.h" +#include "main/colormac.h" +#include "main/depth.h" +#include "main/drawpix.h" +#include "main/extensions.h" +#include "main/framebuffer.h" +#include "main/macros.h" +#include "main/image.h" +#include "main/imports.h" +#include "main/mtypes.h" +#include "main/state.h" +#include "main/texobj.h" +#include "main/teximage.h" +#include "main/texstore.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" + + + +/* + * Dithering kernels and lookup tables. + */ + +const int xmesa_kernel8[DITH_DY * DITH_DX] = { + 0 * MAXC, 8 * MAXC, 2 * MAXC, 10 * MAXC, + 12 * MAXC, 4 * MAXC, 14 * MAXC, 6 * MAXC, + 3 * MAXC, 11 * MAXC, 1 * MAXC, 9 * MAXC, + 15 * MAXC, 7 * MAXC, 13 * MAXC, 5 * MAXC, +}; + +const short xmesa_HPCR_DRGB[3][2][16] = { + { + { 16, -4, 1,-11, 14, -6, 3, -9, 15, -5, 2,-10, 13, -7, 4, -8}, + {-15, 5, 0, 12,-13, 7, -2, 10,-14, 6, -1, 11,-12, 8, -3, 9} + }, + { + {-11, 15, -7, 3, -8, 14, -4, 2,-10, 16, -6, 4, -9, 13, -5, 1}, + { 12,-14, 8, -2, 9,-13, 5, -1, 11,-15, 7, -3, 10,-12, 6, 0} + }, + { + { 6,-18, 26,-14, 2,-22, 30,-10, 8,-16, 28,-12, 4,-20, 32, -8}, + { -4, 20,-24, 16, 0, 24,-28, 12, -6, 18,-26, 14, -2, 22,-30, 10} + } +}; + +const int xmesa_kernel1[16] = { + 0*47, 9*47, 4*47, 12*47, /* 47 = (255*3)/16 */ + 6*47, 2*47, 14*47, 8*47, + 10*47, 1*47, 5*47, 11*47, + 7*47, 13*47, 3*47, 15*47 +}; + + +static void +finish_or_flush( GLcontext *ctx ) +{ +#ifdef XFree86Server + /* NOT_NEEDED */ +#else + const XMesaContext xmesa = XMESA_CONTEXT(ctx); + if (xmesa) { + _glthread_LOCK_MUTEX(_xmesa_lock); + XSync( xmesa->display, False ); + _glthread_UNLOCK_MUTEX(_xmesa_lock); + } +#endif +} + + +static void +clear_color( GLcontext *ctx, const GLfloat color[4] ) +{ + if (ctx->DrawBuffer->Name == 0) { + const XMesaContext xmesa = XMESA_CONTEXT(ctx); + XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer); + + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]); + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]); + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]); + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]); + xmesa->clearpixel = xmesa_color_to_pixel( ctx, + xmesa->clearcolor[0], + xmesa->clearcolor[1], + xmesa->clearcolor[2], + xmesa->clearcolor[3], + xmesa->xm_visual->undithered_pf ); + _glthread_LOCK_MUTEX(_xmesa_lock); + XMesaSetForeground( xmesa->display, xmbuf->cleargc, + xmesa->clearpixel ); + _glthread_UNLOCK_MUTEX(_xmesa_lock); + } +} + + + +/* Implements glColorMask() */ +static void +color_mask(GLcontext *ctx, + GLboolean rmask, GLboolean gmask, GLboolean bmask, GLboolean amask) +{ + const XMesaContext xmesa = XMESA_CONTEXT(ctx); + XMesaBuffer xmbuf; + const int xclass = xmesa->xm_visual->mesa_visual.visualType; + (void) amask; + + if (ctx->DrawBuffer->Name != 0) + 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(GLcontext *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.Height - y - height, + width, height ); +} + + +static void +clear_8bit_ximage( GLcontext *ctx, struct xmesa_renderbuffer *xrb, + GLint x, GLint y, GLint width, GLint height ) +{ + const XMesaContext xmesa = XMESA_CONTEXT(ctx); + GLint i; + for (i = 0; i < height; i++) { + GLubyte *ptr = PIXEL_ADDR1(xrb, x, y + i); + memset( ptr, xmesa->clearpixel, width ); + } +} + + +static void +clear_HPCR_ximage( GLcontext *ctx, struct xmesa_renderbuffer *xrb, + GLint x, GLint y, GLint width, GLint height ) +{ + const XMesaContext xmesa = XMESA_CONTEXT(ctx); + GLint i; + for (i = y; i < y + height; i++) { + GLubyte *ptr = PIXEL_ADDR1( xrb, x, i ); + int j; + const GLubyte *sptr = xmesa->xm_visual->hpcr_clear_ximage_pattern[0]; + if (i & 1) { + sptr += 16; + } + for (j = x; j < x + width; j++) { + *ptr = sptr[j&15]; + ptr++; + } + } +} + + +static void +clear_16bit_ximage( GLcontext *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(GLcontext *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(GLcontext *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.Width && height == xrb->Base.Height) { + /* clearing whole buffer */ + const GLuint n = xrb->Base.Width * xrb->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(GLcontext *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(GLcontext *ctx, GLbitfield buffers) +{ + if (ctx->DrawBuffer->Name == 0) { + /* this is a window system framebuffer */ + const GLuint *colorMask = (GLuint *) &ctx->Color.ColorMask[0]; + 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; + + /* 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); +} + + +#ifndef XFree86Server +/* 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(GLcontext *ctx, GLenum format, GLenum type) +{ + if (format == GL_BGRA && + type == GL_UNSIGNED_BYTE && + ctx->DrawBuffer && + ctx->DrawBuffer->Name == 0 && + 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->Wrapped); + if (xrb && + xrb->pixmap && /* drawing to pixmap or window */ + _mesa_get_format_bits(xrb->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( GLcontext *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 (unpack->BufferObj->Name) { + /* unpack from PBO */ + GLubyte *buf; + if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, + format, type, pixels)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glDrawPixels(invalid PBO access)"); + return; + } + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, + GL_PIXEL_UNPACK_BUFFER_EXT, + GL_READ_ONLY_ARB, + 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]->Wrapped); + 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 (unpack->BufferObj->Name) { + ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, + 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(GLcontext *ctx, GLenum format, GLenum type) +{ + if (format == GL_RGB && + type == GL_UNSIGNED_SHORT_5_6_5 && + !ctx->Color.DitherFlag && /* no dithering */ + ctx->DrawBuffer && + ctx->DrawBuffer->Name == 0 && + 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->Wrapped); + if (xrb && + xrb->pixmap && /* drawing to pixmap or window */ + _mesa_get_format_bits(xrb->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( GLcontext *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 (unpack->BufferObj->Name) { + /* unpack from PBO */ + GLubyte *buf; + if (!_mesa_validate_pbo_access(2, unpack, width, height, 1, + format, type, pixels)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glDrawPixels(invalid PBO access)"); + return; + } + buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, + GL_PIXEL_UNPACK_BUFFER_EXT, + GL_READ_ONLY_ARB, + 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]->Wrapped); + 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, GL_PIXEL_UNPACK_BUFFER_EXT, + 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(GLcontext *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->Wrapped); + struct xmesa_renderbuffer *dstXrb + = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped); + 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( GLcontext *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->Wrapped); + struct xmesa_renderbuffer *dstXrb + = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]->Wrapped); + + 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 ); + } +} + +#endif /* XFree86Server */ + + + +/* + * Every driver should implement a GetString function in order to + * return a meaningful GL_RENDERER string. + */ +static const GLubyte * +get_string( GLcontext *ctx, GLenum name ) +{ + (void) ctx; + switch (name) { + case GL_RENDERER: +#ifdef XFree86Server + return (const GLubyte *) "Mesa GLX Indirect"; +#else + return (const GLubyte *) "Mesa X11"; +#endif + case GL_VENDOR: +#ifdef XFree86Server + return (const GLubyte *) "Mesa project: www.mesa3d.org"; +#else + return NULL; +#endif + default: + return NULL; + } +} + + +/* + * We implement the glEnable function only because we care about + * dither enable/disable. + */ +static void +enable( GLcontext *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 */ + } +} + + +static void +clear_color_HPCR_ximage( GLcontext *ctx, const GLfloat color[4] ) +{ + int i; + const XMesaContext xmesa = XMESA_CONTEXT(ctx); + + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]); + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]); + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]); + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]); + + if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) { + /* black is black */ + memset( xmesa->xm_visual->hpcr_clear_ximage_pattern, 0x0 , + sizeof(xmesa->xm_visual->hpcr_clear_ximage_pattern)); + } + else { + /* build clear pattern */ + for (i=0; i<16; i++) { + xmesa->xm_visual->hpcr_clear_ximage_pattern[0][i] = + DITHER_HPCR(i, 0, + xmesa->clearcolor[0], + xmesa->clearcolor[1], + xmesa->clearcolor[2]); + xmesa->xm_visual->hpcr_clear_ximage_pattern[1][i] = + DITHER_HPCR(i, 1, + xmesa->clearcolor[0], + xmesa->clearcolor[1], + xmesa->clearcolor[2]); + } + } +} + + +static void +clear_color_HPCR_pixmap( GLcontext *ctx, const GLfloat color[4] ) +{ + int i; + const XMesaContext xmesa = XMESA_CONTEXT(ctx); + + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[0], color[0]); + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[1], color[1]); + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[2], color[2]); + CLAMPED_FLOAT_TO_UBYTE(xmesa->clearcolor[3], color[3]); + + if (color[0] == 0.0 && color[1] == 0.0 && color[2] == 0.0) { + /* black is black */ + for (i=0; i<16; i++) { + XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0, 0); + XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1, 0); + } + } + else { + for (i=0; i<16; i++) { + XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 0, + DITHER_HPCR(i, 0, + xmesa->clearcolor[0], + xmesa->clearcolor[1], + xmesa->clearcolor[2])); + XMesaPutPixel(xmesa->xm_visual->hpcr_clear_ximage, i, 1, + DITHER_HPCR(i, 1, + xmesa->clearcolor[0], + xmesa->clearcolor[1], + xmesa->clearcolor[2])); + } + } + /* change tile pixmap content */ + XMesaPutImage(xmesa->display, + (XMesaDrawable)xmesa->xm_visual->hpcr_clear_pixmap, + XMESA_BUFFER(ctx->DrawBuffer)->cleargc, + xmesa->xm_visual->hpcr_clear_ximage, 0, 0, 0, 0, 16, 2); +} + + +/** + * Called when the driver should update its state, based on the new_state + * flags. + */ +void +xmesa_update_state( GLcontext *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 (ctx->DrawBuffer->Name != 0) + 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) { + xmesa_set_renderbuffer_funcs(front_xrb, xmesa->pixelformat, + xmesa->xm_visual->BitsPerPixel); + front_xrb->clearFunc = clear_pixmap; + } + + back_xrb = xmbuf->backxrb; + if (back_xrb) { + xmesa_set_renderbuffer_funcs(back_xrb, xmesa->pixelformat, + xmesa->xm_visual->BitsPerPixel); + if (xmbuf->backxrb->pixmap) { + back_xrb->clearFunc = clear_pixmap; + } + else { + switch (xmesa->xm_visual->BitsPerPixel) { + case 8: + if (xmesa->xm_visual->hpcr_clear_flag) { + back_xrb->clearFunc = clear_HPCR_ximage; + } + else { + back_xrb->clearFunc = clear_8bit_ximage; + } + break; + 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; + } + } + } + } + + if (xmesa->xm_visual->hpcr_clear_flag) { + /* this depends on whether we're drawing to the front or back buffer */ + /* XXX FIX THIS! */ +#if 0 + if (pixmap) { + ctx->Driver.ClearColor = clear_color_HPCR_pixmap; + } + else { + ctx->Driver.ClearColor = clear_color_HPCR_ximage; + } +#else + (void) clear_color_HPCR_pixmap; + (void) clear_color_HPCR_ximage; +#endif + } +} + + + +/** + * Called via ctx->Driver.TestProxyTeximage(). Normally, we'd just use + * the _mesa_test_proxy_teximage() fallback function, but we're going to + * special-case the 3D texture case to allow textures up to 512x512x32 + * texels. + */ +static GLboolean +test_proxy_teximage(GLcontext *ctx, GLenum target, GLint level, + GLint internalFormat, GLenum format, GLenum type, + GLint width, GLint height, GLint depth, GLint border) +{ + if (target == GL_PROXY_TEXTURE_3D) { + /* special case for 3D textures */ + if (width * height * depth > 512 * 512 * 64 || + width < 2 * border || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(width - 2 * border) != 1) || + height < 2 * border || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(height - 2 * border) != 1) || + depth < 2 * border || + (!ctx->Extensions.ARB_texture_non_power_of_two && + _mesa_bitcount(depth - 2 * border) != 1)) { + /* Bad size, or too many texels */ + return GL_FALSE; + } + return GL_TRUE; + } + else { + /* use the fallback routine for 1D, 2D, cube and rect targets */ + return _mesa_test_proxy_teximage(ctx, target, level, internalFormat, + format, type, width, height, depth, + border); + } +} + + +/** + * In SW, we don't really compress GL_COMPRESSED_RGB[A] textures! + */ +static gl_format +choose_tex_format( GLcontext *ctx, GLint internalFormat, + GLenum format, GLenum type ) +{ + switch (internalFormat) { + case GL_COMPRESSED_RGB_ARB: + return MESA_FORMAT_RGB888; + case GL_COMPRESSED_RGBA_ARB: + return MESA_FORMAT_RGBA8888; + default: + return _mesa_choose_tex_format(ctx, internalFormat, format, type); + } +} + + +/** + * 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(GLcontext *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(GLcontext *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(GLcontext *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(GLcontext *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->ClearColor = clear_color; + 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; +#ifndef XFree86Server + 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; + } +#endif + } + driver->TestProxyTexImage = test_proxy_teximage; +#if ENABLE_EXT_texure_compression_s3tc + driver->ChooseTextureFormat = choose_tex_format; +#else + (void) choose_tex_format; +#endif + +#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( GLcontext *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; +} |