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-rw-r--r--src/mesa/pipe/xlib/xm_line.c691
1 files changed, 691 insertions, 0 deletions
diff --git a/src/mesa/pipe/xlib/xm_line.c b/src/mesa/pipe/xlib/xm_line.c
new file mode 100644
index 00000000000..deeae5019c4
--- /dev/null
+++ b/src/mesa/pipe/xlib/xm_line.c
@@ -0,0 +1,691 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5
+ *
+ * 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.
+ */
+
+
+/*
+ * This file contains "accelerated" point, line, and triangle functions.
+ * It should be fairly easy to write new special-purpose point, line or
+ * triangle functions and hook them into this module.
+ */
+
+
+#include "glxheader.h"
+#include "depth.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "xmesaP.h"
+
+/* Internal swrast includes:
+ */
+#include "swrast/s_depth.h"
+#include "swrast/s_points.h"
+#include "swrast/s_lines.h"
+#include "swrast/s_context.h"
+
+
+/**********************************************************************/
+/*** Point rendering ***/
+/**********************************************************************/
+
+
+/*
+ * Render an array of points into a pixmap, any pixel format.
+ */
+#if 000
+/* XXX don't use this, it doesn't dither correctly */
+static void draw_points_ANY_pixmap( GLcontext *ctx, const SWvertex *vert )
+{
+ XMesaContext xmesa = XMESA_CONTEXT(ctx);
+ XMesaDisplay *dpy = xmesa->xm_visual->display;
+ XMesaDrawable buffer = xmesa->xm_buffer->buffer;
+ XMesaGC gc = xmesa->xm_buffer->gc;
+
+ if (xmesa->xm_visual->mesa_visual.RGBAflag) {
+ register int x, y;
+ const GLubyte *color = vert->color;
+ unsigned long pixel = xmesa_color_to_pixel( xmesa,
+ color[0], color[1],
+ color[2], color[3],
+ xmesa->pixelformat);
+ XMesaSetForeground( dpy, gc, pixel );
+ x = (GLint) vert->win[0];
+ y = YFLIP( xrb, (GLint) vert->win[1] );
+ XMesaDrawPoint( dpy, buffer, gc, x, y);
+ }
+ else {
+ /* Color index mode */
+ register int x, y;
+ XMesaSetForeground( dpy, gc, vert->index );
+ x = (GLint) vert->win[0];
+ y = YFLIP( xrb, (GLint) vert->win[1] );
+ XMesaDrawPoint( dpy, buffer, gc, x, y);
+ }
+}
+#endif
+
+
+/* Override the swrast point-selection function. Try to use one of
+ * our internal point functions, otherwise fall back to the standard
+ * swrast functions.
+ */
+void xmesa_choose_point( GLcontext *ctx )
+{
+#if 0
+ XMesaContext xmesa = XMESA_CONTEXT(ctx);
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if (ctx->RenderMode == GL_RENDER
+ && ctx->Point.Size == 1.0F && !ctx->Point.SmoothFlag
+ && swrast->_RasterMask == 0
+ && !ctx->Texture._EnabledUnits
+ && xmesa->xm_buffer->buffer != XIMAGE) {
+ swrast->Point = draw_points_ANY_pixmap;
+ }
+ else {
+ _swrast_choose_point( ctx );
+ }
+#else
+ _swrast_choose_point( ctx );
+#endif
+}
+
+
+
+/**********************************************************************/
+/*** Line rendering ***/
+/**********************************************************************/
+
+
+#if CHAN_BITS == 8
+
+
+#define GET_XRB(XRB) struct xmesa_renderbuffer *XRB = \
+ xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0][0]->Wrapped)
+
+
+/*
+ * Draw a flat-shaded, PF_TRUECOLOR line into an XImage.
+ */
+#define NAME flat_TRUECOLOR_line
+#define SETUP_CODE \
+ XMesaContext xmesa = XMESA_CONTEXT(ctx); \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ unsigned long pixel; \
+ PACK_TRUECOLOR( pixel, color[0], color[1], color[2] );
+#define CLIP_HACK 1
+#define PLOT(X,Y) XMesaPutPixel(xrb->ximage, X, YFLIP(xrb, Y), pixel );
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, PF_8A8B8G8R line into an XImage.
+ */
+#define NAME flat_8A8B8G8R_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLuint pixel = PACK_8A8B8G8R(color[0], color[1], color[2], color[3]);
+#define PIXEL_TYPE GLuint
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X, Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) *pixelPtr = pixel;
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, PF_8A8R8G8B line into an XImage.
+ */
+#define NAME flat_8A8R8G8B_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLuint pixel = PACK_8A8R8G8B(color[0], color[1], color[2], color[3]);
+#define PIXEL_TYPE GLuint
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X, Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) *pixelPtr = pixel;
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, PF_8R8G8B line into an XImage.
+ */
+#define NAME flat_8R8G8B_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLuint pixel = PACK_8R8G8B( color[0], color[1], color[2] );
+#define PIXEL_TYPE GLuint
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X, Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) *pixelPtr = pixel;
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, PF_8R8G8B24 line into an XImage.
+ */
+#define NAME flat_8R8G8B24_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color;
+#define PIXEL_TYPE bgr_t
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR3(xrb, X, Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) { \
+ pixelPtr->r = color[RCOMP]; \
+ pixelPtr->g = color[GCOMP]; \
+ pixelPtr->b = color[BCOMP]; \
+}
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, PF_5R6G5B line into an XImage.
+ */
+#define NAME flat_5R6G5B_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLushort pixel = PACK_5R6G5B( color[0], color[1], color[2] );
+#define PIXEL_TYPE GLushort
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X, Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) *pixelPtr = pixel;
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, PF_DITHER_5R6G5B line into an XImage.
+ */
+#define NAME flat_DITHER_5R6G5B_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ XMesaContext xmesa = XMESA_CONTEXT(ctx); \
+ const GLubyte *color = vert1->color;
+#define PIXEL_TYPE GLushort
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X, Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) PACK_TRUEDITHER( *pixelPtr, X, Y, color[0], color[1], color[2] );
+#include "swrast/s_linetemp.h"
+
+
+
+
+/*
+ * Draw a flat-shaded, PF_DITHER 8-bit line into an XImage.
+ */
+#define NAME flat_DITHER8_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLint r = color[0], g = color[1], b = color[2]; \
+ DITHER_SETUP;
+#define PIXEL_TYPE GLubyte
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR1(xrb, X, Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) *pixelPtr = DITHER(X,Y,r,g,b);
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, PF_LOOKUP 8-bit line into an XImage.
+ */
+#define NAME flat_LOOKUP8_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLubyte pixel; \
+ LOOKUP_SETUP; \
+ pixel = (GLubyte) LOOKUP( color[0], color[1], color[2] );
+#define PIXEL_TYPE GLubyte
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR1(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) *pixelPtr = pixel;
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, PF_HPCR line into an XImage.
+ */
+#define NAME flat_HPCR_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ XMesaContext xmesa = XMESA_CONTEXT(ctx); \
+ const GLubyte *color = vert1->color; \
+ GLint r = color[0], g = color[1], b = color[2];
+#define PIXEL_TYPE GLubyte
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR1(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) *pixelPtr = (GLubyte) DITHER_HPCR(X,Y,r,g,b);
+#include "swrast/s_linetemp.h"
+
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_TRUECOLOR line into an XImage.
+ */
+#define NAME flat_TRUECOLOR_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ XMesaContext xmesa = XMESA_CONTEXT(ctx); \
+ const GLubyte *color = vert1->color; \
+ unsigned long pixel; \
+ PACK_TRUECOLOR( pixel, color[0], color[1], color[2] );
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ XMesaPutPixel(xrb->ximage, X, YFLIP(xrb, Y), pixel); \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_8A8B8G8R line into an XImage.
+ */
+#define NAME flat_8A8B8G8R_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLuint pixel = PACK_8A8B8G8R(color[0], color[1], color[2], color[3]);
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define PIXEL_TYPE GLuint
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ *pixelPtr = pixel; \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_8A8R8G8B line into an XImage.
+ */
+#define NAME flat_8A8R8G8B_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLuint pixel = PACK_8A8R8G8B(color[0], color[1], color[2], color[3]);
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define PIXEL_TYPE GLuint
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ *pixelPtr = pixel; \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_8R8G8B line into an XImage.
+ */
+#define NAME flat_8R8G8B_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLuint pixel = PACK_8R8G8B( color[0], color[1], color[2] );
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define PIXEL_TYPE GLuint
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ *pixelPtr = pixel; \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_8R8G8B24 line into an XImage.
+ */
+#define NAME flat_8R8G8B24_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color;
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define PIXEL_TYPE bgr_t
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR3(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ pixelPtr->r = color[RCOMP]; \
+ pixelPtr->g = color[GCOMP]; \
+ pixelPtr->b = color[BCOMP]; \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_5R6G5B line into an XImage.
+ */
+#define NAME flat_5R6G5B_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLushort pixel = PACK_5R6G5B( color[0], color[1], color[2] );
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define PIXEL_TYPE GLushort
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ *pixelPtr = pixel; \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_DITHER_5R6G5B line into an XImage.
+ */
+#define NAME flat_DITHER_5R6G5B_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ XMesaContext xmesa = XMESA_CONTEXT(ctx); \
+ const GLubyte *color = vert1->color;
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define PIXEL_TYPE GLushort
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ PACK_TRUEDITHER(*pixelPtr, X, Y, color[0], color[1], color[2]); \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_DITHER 8-bit line into an XImage.
+ */
+#define NAME flat_DITHER8_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLint r = color[0], g = color[1], b = color[2]; \
+ DITHER_SETUP;
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define PIXEL_TYPE GLubyte
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR1(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ *pixelPtr = (GLubyte) DITHER( X, Y, r, g, b); \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_LOOKUP 8-bit line into an XImage.
+ */
+#define NAME flat_LOOKUP8_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ const GLubyte *color = vert1->color; \
+ GLubyte pixel; \
+ LOOKUP_SETUP; \
+ pixel = (GLubyte) LOOKUP( color[0], color[1], color[2] );
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define PIXEL_TYPE GLubyte
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR1(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ *pixelPtr = pixel; \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+/*
+ * Draw a flat-shaded, Z-less, PF_HPCR line into an XImage.
+ */
+#define NAME flat_HPCR_z_line
+#define SETUP_CODE \
+ GET_XRB(xrb); \
+ XMesaContext xmesa = XMESA_CONTEXT(ctx); \
+ const GLubyte *color = vert1->color; \
+ GLint r = color[0], g = color[1], b = color[2];
+#define INTERP_Z 1
+#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
+#define PIXEL_TYPE GLubyte
+#define BYTES_PER_ROW (xrb->ximage->bytes_per_line)
+#define PIXEL_ADDRESS(X,Y) PIXEL_ADDR1(xrb, X,Y)
+#define CLIP_HACK 1
+#define PLOT(X,Y) \
+ if (Z < *zPtr) { \
+ *zPtr = Z; \
+ *pixelPtr = (GLubyte) DITHER_HPCR( X, Y, r, g, b); \
+ }
+#include "swrast/s_linetemp.h"
+
+
+
+
+#ifndef XFree86Server
+/**
+ * Draw fast, XOR line with XDrawLine in front color buffer.
+ * WARNING: this isn't fully OpenGL conformant because different pixels
+ * will be hit versus using the other line functions.
+ * Don't use the code in X server GLcore module since we need a wrapper
+ * for the XSetLineAttributes() function call.
+ */
+static void
+xor_line(GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1)
+{
+ XMesaContext xmesa = XMESA_CONTEXT(ctx);
+ XMesaDisplay *dpy = xmesa->xm_visual->display;
+ XMesaGC gc = xmesa->xm_buffer->gc;
+ GET_XRB(xrb);
+ unsigned long pixel = xmesa_color_to_pixel(ctx,
+ vert1->color[0], vert1->color[1],
+ vert1->color[2], vert1->color[3],
+ xmesa->pixelformat);
+ int x0 = (GLint) vert0->attrib[FRAG_ATTRIB_WPOS][0];
+ int y0 = YFLIP(xrb, (GLint) vert0->attrib[FRAG_ATTRIB_WPOS][1]);
+ int x1 = (GLint) vert1->attrib[FRAG_ATTRIB_WPOS][0];
+ int y1 = YFLIP(xrb, (GLint) vert1->attrib[FRAG_ATTRIB_WPOS][1]);
+ XMesaSetForeground(dpy, gc, pixel);
+ XMesaSetFunction(dpy, gc, GXxor);
+ XSetLineAttributes(dpy, gc, (int) ctx->Line.Width,
+ LineSolid, CapButt, JoinMiter);
+ XDrawLine(dpy, xrb->pixmap, gc, x0, y0, x1, y1);
+ XMesaSetFunction(dpy, gc, GXcopy); /* this gc is used elsewhere */
+}
+#endif /* XFree86Server */
+
+
+#endif /* CHAN_BITS == 8 */
+
+
+/**
+ * Return pointer to line drawing function, or NULL if we should use a
+ * swrast fallback.
+ */
+static swrast_line_func
+get_line_func(GLcontext *ctx)
+{
+#if CHAN_BITS == 8
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+ XMesaContext xmesa = XMESA_CONTEXT(ctx);
+ XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
+ const int depth = GET_VISUAL_DEPTH(xmesa->xm_visual);
+ const struct xmesa_renderbuffer *xrb;
+
+ if ((ctx->DrawBuffer->_ColorDrawBufferMask[0]
+ & (BUFFER_BIT_FRONT_LEFT | BUFFER_BIT_BACK_LEFT)) == 0)
+ return (swrast_line_func) NULL;
+ if (ctx->RenderMode != GL_RENDER) return (swrast_line_func) NULL;
+ if (ctx->Line.SmoothFlag) return (swrast_line_func) NULL;
+ if (ctx->Texture._EnabledUnits) return (swrast_line_func) NULL;
+ if (ctx->Light.ShadeModel != GL_FLAT) return (swrast_line_func) NULL;
+ if (ctx->Line.StippleFlag) return (swrast_line_func) NULL;
+ if (swrast->_RasterMask & MULTI_DRAW_BIT) return (swrast_line_func) NULL;
+ if (xmbuf->swAlpha) return (swrast_line_func) NULL;
+
+ xrb = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0][0]->Wrapped);
+
+ if (xrb->ximage
+ && swrast->_RasterMask==DEPTH_BIT
+ && ctx->Depth.Func==GL_LESS
+ && ctx->Depth.Mask==GL_TRUE
+ && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS
+ && ctx->Line.Width==1.0F) {
+ switch (xmesa->pixelformat) {
+ case PF_Truecolor:
+ return flat_TRUECOLOR_z_line;
+ case PF_8A8B8G8R:
+ return flat_8A8B8G8R_z_line;
+ case PF_8A8R8G8B:
+ return flat_8A8R8G8B_z_line;
+ case PF_8R8G8B:
+ return flat_8R8G8B_z_line;
+ case PF_8R8G8B24:
+ return flat_8R8G8B24_z_line;
+ case PF_5R6G5B:
+ return flat_5R6G5B_z_line;
+ case PF_Dither_5R6G5B:
+ return flat_DITHER_5R6G5B_z_line;
+ case PF_Dither:
+ return (depth==8) ? flat_DITHER8_z_line : (swrast_line_func) NULL;
+ case PF_Lookup:
+ return (depth==8) ? flat_LOOKUP8_z_line : (swrast_line_func) NULL;
+ case PF_HPCR:
+ return flat_HPCR_z_line;
+ default:
+ return (swrast_line_func)NULL;
+ }
+ }
+ if (xrb->ximage
+ && swrast->_RasterMask==0
+ && ctx->Line.Width==1.0F) {
+ switch (xmesa->pixelformat) {
+ case PF_Truecolor:
+ return flat_TRUECOLOR_line;
+ case PF_8A8B8G8R:
+ return flat_8A8B8G8R_line;
+ case PF_8A8R8G8B:
+ return flat_8A8R8G8B_line;
+ case PF_8R8G8B:
+ return flat_8R8G8B_line;
+ case PF_8R8G8B24:
+ return flat_8R8G8B24_line;
+ case PF_5R6G5B:
+ return flat_5R6G5B_line;
+ case PF_Dither_5R6G5B:
+ return flat_DITHER_5R6G5B_line;
+ case PF_Dither:
+ return (depth==8) ? flat_DITHER8_line : (swrast_line_func) NULL;
+ case PF_Lookup:
+ return (depth==8) ? flat_LOOKUP8_line : (swrast_line_func) NULL;
+ case PF_HPCR:
+ return flat_HPCR_line;
+ default:
+ return (swrast_line_func)NULL;
+ }
+ }
+
+#ifndef XFree86Server
+ if (ctx->DrawBuffer->_NumColorDrawBuffers[0] == 1
+ && ctx->DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_FRONT_LEFT
+ && swrast->_RasterMask == LOGIC_OP_BIT
+ && ctx->Color.LogicOp == GL_XOR
+ && !ctx->Line.StippleFlag
+ && !ctx->Line.SmoothFlag) {
+ return xor_line;
+ }
+#endif /* XFree86Server */
+
+#endif /* CHAN_BITS == 8 */
+ return (swrast_line_func) NULL;
+}
+
+
+/**
+ * Override for the swrast line-selection function. Try to use one
+ * of our internal line functions, otherwise fall back to the
+ * standard swrast functions.
+ */
+void
+xmesa_choose_line(GLcontext *ctx)
+{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
+ if (!(swrast->Line = get_line_func( ctx )))
+ _swrast_choose_line( ctx );
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 22:35:50 +0000