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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5564 | serge | 1 | /* |
| 2 | * Mesa 3-D graphics library |
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| 3 | * |
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| 4 | * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the "Software"), |
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| 8 | * to deal in the Software without restriction, including without limitation |
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| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 11 | * Software is furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included |
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| 14 | * in all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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| 20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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| 21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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| 22 | * OTHER DEALINGS IN THE SOFTWARE. |
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| 23 | */ |
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| 24 | |||
| 25 | |||
| 26 | /* |
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| 27 | * This file contains "accelerated" point, line, and triangle functions. |
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| 28 | * It should be fairly easy to write new special-purpose point, line or |
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| 29 | * triangle functions and hook them into this module. |
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| 30 | */ |
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| 31 | |||
| 32 | |||
| 33 | #include "glxheader.h" |
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| 34 | #include "main/macros.h" |
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| 35 | #include "main/mtypes.h" |
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| 36 | #include "xmesaP.h" |
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| 37 | |||
| 38 | /* Internal swrast includes: |
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| 39 | */ |
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| 40 | #include "swrast/s_depth.h" |
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| 41 | #include "swrast/s_points.h" |
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| 42 | #include "swrast/s_lines.h" |
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| 43 | #include "swrast/s_context.h" |
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| 44 | |||
| 45 | |||
| 46 | /**********************************************************************/ |
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| 47 | /*** Point rendering ***/ |
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| 48 | /**********************************************************************/ |
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| 49 | |||
| 50 | |||
| 51 | /* |
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| 52 | * Render an array of points into a pixmap, any pixel format. |
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| 53 | */ |
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| 54 | #if 000 |
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| 55 | /* XXX don't use this, it doesn't dither correctly */ |
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| 56 | static void draw_points_ANY_pixmap( struct gl_context *ctx, const SWvertex *vert ) |
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| 57 | { |
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| 58 | XMesaContext xmesa = XMESA_CONTEXT(ctx); |
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| 59 | XMesaDisplay *dpy = xmesa->xm_visual->display; |
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| 60 | XMesaDrawable buffer = xmesa->xm_buffer->buffer; |
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| 61 | XMesaGC gc = xmesa->xm_buffer->gc; |
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| 62 | |||
| 63 | if (xmesa->xm_visual->mesa_visual.RGBAflag) { |
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| 64 | register int x, y; |
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| 65 | const GLubyte *color = vert->color; |
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| 66 | unsigned long pixel = xmesa_color_to_pixel( xmesa, |
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| 67 | color[0], color[1], |
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| 68 | color[2], color[3], |
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| 69 | xmesa->pixelformat); |
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| 70 | XMesaSetForeground( dpy, gc, pixel ); |
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| 71 | x = (GLint) vert->win[0]; |
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| 72 | y = YFLIP( xrb, (GLint) vert->win[1] ); |
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| 73 | XMesaDrawPoint( dpy, buffer, gc, x, y); |
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| 74 | } |
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| 75 | else { |
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| 76 | /* Color index mode */ |
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| 77 | register int x, y; |
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| 78 | XMesaSetForeground( dpy, gc, vert->index ); |
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| 79 | x = (GLint) vert->win[0]; |
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| 80 | y = YFLIP( xrb, (GLint) vert->win[1] ); |
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| 81 | XMesaDrawPoint( dpy, buffer, gc, x, y); |
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| 82 | } |
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| 83 | } |
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| 84 | #endif |
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| 85 | |||
| 86 | |||
| 87 | /* Override the swrast point-selection function. Try to use one of |
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| 88 | * our internal point functions, otherwise fall back to the standard |
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| 89 | * swrast functions. |
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| 90 | */ |
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| 91 | void xmesa_choose_point( struct gl_context *ctx ) |
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| 92 | { |
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| 93 | #if 0 |
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| 94 | XMesaContext xmesa = XMESA_CONTEXT(ctx); |
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| 95 | SWcontext *swrast = SWRAST_CONTEXT(ctx); |
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| 96 | |||
| 97 | if (ctx->RenderMode == GL_RENDER |
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| 98 | && ctx->Point.Size == 1.0F && !ctx->Point.SmoothFlag |
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| 99 | && swrast->_RasterMask == 0 |
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| 100 | && ctx->Texture._MaxEnabledTexImageUnit == -1 |
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| 101 | && xmesa->xm_buffer->buffer != XIMAGE) { |
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| 102 | swrast->Point = draw_points_ANY_pixmap; |
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| 103 | } |
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| 104 | else { |
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| 105 | _swrast_choose_point( ctx ); |
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| 106 | } |
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| 107 | #else |
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| 108 | _swrast_choose_point( ctx ); |
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| 109 | #endif |
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| 110 | } |
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| 111 | |||
| 112 | |||
| 113 | |||
| 114 | /**********************************************************************/ |
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| 115 | /*** Line rendering ***/ |
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| 116 | /**********************************************************************/ |
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| 117 | |||
| 118 | |||
| 119 | #if CHAN_BITS == 8 |
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| 120 | |||
| 121 | |||
| 122 | #define GET_XRB(XRB) struct xmesa_renderbuffer *XRB = \ |
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| 123 | xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]) |
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| 124 | |||
| 125 | |||
| 126 | /* |
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| 127 | * Draw a flat-shaded, PF_TRUECOLOR line into an XImage. |
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| 128 | */ |
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| 129 | #define NAME flat_TRUECOLOR_line |
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| 130 | #define SETUP_CODE \ |
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| 131 | XMesaContext xmesa = XMESA_CONTEXT(ctx); \ |
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| 132 | GET_XRB(xrb); \ |
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| 133 | const GLubyte *color = vert1->color; \ |
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| 134 | unsigned long pixel; \ |
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| 135 | PACK_TRUECOLOR( pixel, color[0], color[1], color[2] ); |
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| 136 | #define CLIP_HACK 1 |
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| 137 | #define PLOT(X,Y) XMesaPutPixel(xrb->ximage, X, YFLIP(xrb, Y), pixel ); |
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| 138 | #include "swrast/s_linetemp.h" |
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| 139 | |||
| 140 | |||
| 141 | |||
| 142 | /* |
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| 143 | * Draw a flat-shaded, PF_8A8B8G8R line into an XImage. |
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| 144 | */ |
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| 145 | #define NAME flat_8A8B8G8R_line |
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| 146 | #define SETUP_CODE \ |
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| 147 | GET_XRB(xrb); \ |
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| 148 | const GLubyte *color = vert1->color; \ |
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| 149 | GLuint pixel = PACK_8A8B8G8R(color[0], color[1], color[2], color[3]); |
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| 150 | #define PIXEL_TYPE GLuint |
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| 151 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 152 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X, Y) |
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| 153 | #define CLIP_HACK 1 |
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| 154 | #define PLOT(X,Y) *pixelPtr = pixel; |
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| 155 | #include "swrast/s_linetemp.h" |
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| 156 | |||
| 157 | |||
| 158 | |||
| 159 | /* |
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| 160 | * Draw a flat-shaded, PF_8A8R8G8B line into an XImage. |
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| 161 | */ |
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| 162 | #define NAME flat_8A8R8G8B_line |
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| 163 | #define SETUP_CODE \ |
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| 164 | GET_XRB(xrb); \ |
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| 165 | const GLubyte *color = vert1->color; \ |
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| 166 | GLuint pixel = PACK_8A8R8G8B(color[0], color[1], color[2], color[3]); |
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| 167 | #define PIXEL_TYPE GLuint |
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| 168 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 169 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X, Y) |
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| 170 | #define CLIP_HACK 1 |
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| 171 | #define PLOT(X,Y) *pixelPtr = pixel; |
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| 172 | #include "swrast/s_linetemp.h" |
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| 173 | |||
| 174 | |||
| 175 | |||
| 176 | /* |
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| 177 | * Draw a flat-shaded, PF_8R8G8B line into an XImage. |
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| 178 | */ |
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| 179 | #define NAME flat_8R8G8B_line |
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| 180 | #define SETUP_CODE \ |
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| 181 | GET_XRB(xrb); \ |
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| 182 | const GLubyte *color = vert1->color; \ |
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| 183 | GLuint pixel = PACK_8R8G8B( color[0], color[1], color[2] ); |
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| 184 | #define PIXEL_TYPE GLuint |
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| 185 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 186 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X, Y) |
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| 187 | #define CLIP_HACK 1 |
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| 188 | #define PLOT(X,Y) *pixelPtr = pixel; |
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| 189 | #include "swrast/s_linetemp.h" |
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| 190 | |||
| 191 | |||
| 192 | |||
| 193 | /* |
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| 194 | * Draw a flat-shaded, PF_8R8G8B24 line into an XImage. |
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| 195 | */ |
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| 196 | #define NAME flat_8R8G8B24_line |
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| 197 | #define SETUP_CODE \ |
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| 198 | GET_XRB(xrb); \ |
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| 199 | const GLubyte *color = vert1->color; |
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| 200 | #define PIXEL_TYPE bgr_t |
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| 201 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 202 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR3(xrb, X, Y) |
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| 203 | #define CLIP_HACK 1 |
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| 204 | #define PLOT(X,Y) { \ |
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| 205 | pixelPtr->r = color[RCOMP]; \ |
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| 206 | pixelPtr->g = color[GCOMP]; \ |
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| 207 | pixelPtr->b = color[BCOMP]; \ |
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| 208 | } |
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| 209 | #include "swrast/s_linetemp.h" |
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| 210 | |||
| 211 | |||
| 212 | |||
| 213 | /* |
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| 214 | * Draw a flat-shaded, PF_5R6G5B line into an XImage. |
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| 215 | */ |
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| 216 | #define NAME flat_5R6G5B_line |
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| 217 | #define SETUP_CODE \ |
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| 218 | GET_XRB(xrb); \ |
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| 219 | const GLubyte *color = vert1->color; \ |
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| 220 | GLushort pixel = PACK_5R6G5B( color[0], color[1], color[2] ); |
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| 221 | #define PIXEL_TYPE GLushort |
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| 222 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 223 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X, Y) |
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| 224 | #define CLIP_HACK 1 |
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| 225 | #define PLOT(X,Y) *pixelPtr = pixel; |
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| 226 | #include "swrast/s_linetemp.h" |
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| 227 | |||
| 228 | |||
| 229 | |||
| 230 | /* |
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| 231 | * Draw a flat-shaded, PF_DITHER_5R6G5B line into an XImage. |
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| 232 | */ |
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| 233 | #define NAME flat_DITHER_5R6G5B_line |
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| 234 | #define SETUP_CODE \ |
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| 235 | GET_XRB(xrb); \ |
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| 236 | XMesaContext xmesa = XMESA_CONTEXT(ctx); \ |
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| 237 | const GLubyte *color = vert1->color; |
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| 238 | #define PIXEL_TYPE GLushort |
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| 239 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 240 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X, Y) |
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| 241 | #define CLIP_HACK 1 |
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| 242 | #define PLOT(X,Y) PACK_TRUEDITHER( *pixelPtr, X, Y, color[0], color[1], color[2] ); |
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| 243 | #include "swrast/s_linetemp.h" |
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| 244 | |||
| 245 | |||
| 246 | |||
| 247 | /* |
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| 248 | * Draw a flat-shaded, Z-less, PF_TRUECOLOR line into an XImage. |
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| 249 | */ |
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| 250 | #define NAME flat_TRUECOLOR_z_line |
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| 251 | #define SETUP_CODE \ |
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| 252 | GET_XRB(xrb); \ |
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| 253 | XMesaContext xmesa = XMESA_CONTEXT(ctx); \ |
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| 254 | const GLubyte *color = vert1->color; \ |
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| 255 | unsigned long pixel; \ |
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| 256 | PACK_TRUECOLOR( pixel, color[0], color[1], color[2] ); |
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| 257 | #define INTERP_Z 1 |
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| 258 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
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| 259 | #define CLIP_HACK 1 |
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| 260 | #define PLOT(X,Y) \ |
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| 261 | if (Z < *zPtr) { \ |
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| 262 | *zPtr = Z; \ |
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| 263 | XMesaPutPixel(xrb->ximage, X, YFLIP(xrb, Y), pixel); \ |
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| 264 | } |
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| 265 | #include "swrast/s_linetemp.h" |
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| 266 | |||
| 267 | |||
| 268 | |||
| 269 | /* |
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| 270 | * Draw a flat-shaded, Z-less, PF_8A8B8G8R line into an XImage. |
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| 271 | */ |
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| 272 | #define NAME flat_8A8B8G8R_z_line |
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| 273 | #define SETUP_CODE \ |
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| 274 | GET_XRB(xrb); \ |
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| 275 | const GLubyte *color = vert1->color; \ |
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| 276 | GLuint pixel = PACK_8A8B8G8R(color[0], color[1], color[2], color[3]); |
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| 277 | #define INTERP_Z 1 |
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| 278 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
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| 279 | #define PIXEL_TYPE GLuint |
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| 280 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 281 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X,Y) |
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| 282 | #define CLIP_HACK 1 |
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| 283 | #define PLOT(X,Y) \ |
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| 284 | if (Z < *zPtr) { \ |
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| 285 | *zPtr = Z; \ |
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| 286 | *pixelPtr = pixel; \ |
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| 287 | } |
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| 288 | #include "swrast/s_linetemp.h" |
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| 289 | |||
| 290 | |||
| 291 | |||
| 292 | /* |
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| 293 | * Draw a flat-shaded, Z-less, PF_8A8R8G8B line into an XImage. |
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| 294 | */ |
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| 295 | #define NAME flat_8A8R8G8B_z_line |
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| 296 | #define SETUP_CODE \ |
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| 297 | GET_XRB(xrb); \ |
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| 298 | const GLubyte *color = vert1->color; \ |
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| 299 | GLuint pixel = PACK_8A8R8G8B(color[0], color[1], color[2], color[3]); |
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| 300 | #define INTERP_Z 1 |
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| 301 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
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| 302 | #define PIXEL_TYPE GLuint |
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| 303 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 304 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X,Y) |
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| 305 | #define CLIP_HACK 1 |
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| 306 | #define PLOT(X,Y) \ |
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| 307 | if (Z < *zPtr) { \ |
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| 308 | *zPtr = Z; \ |
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| 309 | *pixelPtr = pixel; \ |
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| 310 | } |
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| 311 | #include "swrast/s_linetemp.h" |
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| 312 | |||
| 313 | |||
| 314 | |||
| 315 | /* |
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| 316 | * Draw a flat-shaded, Z-less, PF_8R8G8B line into an XImage. |
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| 317 | */ |
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| 318 | #define NAME flat_8R8G8B_z_line |
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| 319 | #define SETUP_CODE \ |
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| 320 | GET_XRB(xrb); \ |
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| 321 | const GLubyte *color = vert1->color; \ |
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| 322 | GLuint pixel = PACK_8R8G8B( color[0], color[1], color[2] ); |
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| 323 | #define INTERP_Z 1 |
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| 324 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
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| 325 | #define PIXEL_TYPE GLuint |
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| 326 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 327 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR4(xrb, X,Y) |
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| 328 | #define CLIP_HACK 1 |
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| 329 | #define PLOT(X,Y) \ |
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| 330 | if (Z < *zPtr) { \ |
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| 331 | *zPtr = Z; \ |
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| 332 | *pixelPtr = pixel; \ |
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| 333 | } |
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| 334 | #include "swrast/s_linetemp.h" |
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| 335 | |||
| 336 | |||
| 337 | |||
| 338 | /* |
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| 339 | * Draw a flat-shaded, Z-less, PF_8R8G8B24 line into an XImage. |
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| 340 | */ |
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| 341 | #define NAME flat_8R8G8B24_z_line |
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| 342 | #define SETUP_CODE \ |
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| 343 | GET_XRB(xrb); \ |
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| 344 | const GLubyte *color = vert1->color; |
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| 345 | #define INTERP_Z 1 |
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| 346 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
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| 347 | #define PIXEL_TYPE bgr_t |
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| 348 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 349 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR3(xrb, X,Y) |
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| 350 | #define CLIP_HACK 1 |
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| 351 | #define PLOT(X,Y) \ |
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| 352 | if (Z < *zPtr) { \ |
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| 353 | *zPtr = Z; \ |
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| 354 | pixelPtr->r = color[RCOMP]; \ |
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| 355 | pixelPtr->g = color[GCOMP]; \ |
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| 356 | pixelPtr->b = color[BCOMP]; \ |
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| 357 | } |
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| 358 | #include "swrast/s_linetemp.h" |
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| 359 | |||
| 360 | |||
| 361 | |||
| 362 | /* |
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| 363 | * Draw a flat-shaded, Z-less, PF_5R6G5B line into an XImage. |
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| 364 | */ |
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| 365 | #define NAME flat_5R6G5B_z_line |
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| 366 | #define SETUP_CODE \ |
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| 367 | GET_XRB(xrb); \ |
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| 368 | const GLubyte *color = vert1->color; \ |
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| 369 | GLushort pixel = PACK_5R6G5B( color[0], color[1], color[2] ); |
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| 370 | #define INTERP_Z 1 |
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| 371 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
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| 372 | #define PIXEL_TYPE GLushort |
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| 373 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 374 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X,Y) |
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| 375 | #define CLIP_HACK 1 |
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| 376 | #define PLOT(X,Y) \ |
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| 377 | if (Z < *zPtr) { \ |
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| 378 | *zPtr = Z; \ |
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| 379 | *pixelPtr = pixel; \ |
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| 380 | } |
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| 381 | #include "swrast/s_linetemp.h" |
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| 382 | |||
| 383 | |||
| 384 | |||
| 385 | /* |
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| 386 | * Draw a flat-shaded, Z-less, PF_DITHER_5R6G5B line into an XImage. |
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| 387 | */ |
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| 388 | #define NAME flat_DITHER_5R6G5B_z_line |
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| 389 | #define SETUP_CODE \ |
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| 390 | GET_XRB(xrb); \ |
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| 391 | XMesaContext xmesa = XMESA_CONTEXT(ctx); \ |
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| 392 | const GLubyte *color = vert1->color; |
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| 393 | #define INTERP_Z 1 |
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| 394 | #define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE |
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| 395 | #define PIXEL_TYPE GLushort |
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| 396 | #define BYTES_PER_ROW (xrb->ximage->bytes_per_line) |
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| 397 | #define PIXEL_ADDRESS(X,Y) PIXEL_ADDR2(xrb, X,Y) |
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| 398 | #define CLIP_HACK 1 |
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| 399 | #define PLOT(X,Y) \ |
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| 400 | if (Z < *zPtr) { \ |
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| 401 | *zPtr = Z; \ |
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| 402 | PACK_TRUEDITHER(*pixelPtr, X, Y, color[0], color[1], color[2]); \ |
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| 403 | } |
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| 404 | #include "swrast/s_linetemp.h" |
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| 405 | |||
| 406 | |||
| 407 | |||
| 408 | /** |
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| 409 | * Draw fast, XOR line with XDrawLine in front color buffer. |
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| 410 | * WARNING: this isn't fully OpenGL conformant because different pixels |
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| 411 | * will be hit versus using the other line functions. |
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| 412 | * Don't use the code in X server GLcore module since we need a wrapper |
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| 413 | * for the XSetLineAttributes() function call. |
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| 414 | */ |
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| 415 | static void |
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| 416 | xor_line(struct gl_context *ctx, const SWvertex *vert0, const SWvertex *vert1) |
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| 417 | { |
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| 418 | XMesaContext xmesa = XMESA_CONTEXT(ctx); |
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| 419 | XMesaDisplay *dpy = xmesa->xm_visual->display; |
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| 420 | XMesaGC gc = xmesa->xm_buffer->gc; |
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| 421 | GET_XRB(xrb); |
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| 422 | unsigned long pixel = xmesa_color_to_pixel(ctx, |
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| 423 | vert1->color[0], vert1->color[1], |
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| 424 | vert1->color[2], vert1->color[3], |
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| 425 | xmesa->pixelformat); |
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| 426 | int x0 = (GLint) vert0->attrib[VARYING_SLOT_POS][0]; |
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| 427 | int y0 = YFLIP(xrb, (GLint) vert0->attrib[VARYING_SLOT_POS][1]); |
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| 428 | int x1 = (GLint) vert1->attrib[VARYING_SLOT_POS][0]; |
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| 429 | int y1 = YFLIP(xrb, (GLint) vert1->attrib[VARYING_SLOT_POS][1]); |
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| 430 | XMesaSetForeground(dpy, gc, pixel); |
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| 431 | XMesaSetFunction(dpy, gc, GXxor); |
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| 432 | XSetLineAttributes(dpy, gc, (int) ctx->Line.Width, |
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| 433 | LineSolid, CapButt, JoinMiter); |
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| 434 | XDrawLine(dpy, xrb->pixmap, gc, x0, y0, x1, y1); |
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| 435 | XMesaSetFunction(dpy, gc, GXcopy); /* this gc is used elsewhere */ |
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| 436 | } |
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| 437 | |||
| 438 | |||
| 439 | #endif /* CHAN_BITS == 8 */ |
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| 440 | |||
| 441 | |||
| 442 | /** |
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| 443 | * Return pointer to line drawing function, or NULL if we should use a |
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| 444 | * swrast fallback. |
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| 445 | */ |
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| 446 | static swrast_line_func |
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| 447 | get_line_func(struct gl_context *ctx) |
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| 448 | { |
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| 449 | #if CHAN_BITS == 8 |
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| 450 | SWcontext *swrast = SWRAST_CONTEXT(ctx); |
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| 451 | XMesaContext xmesa = XMESA_CONTEXT(ctx); |
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| 452 | const struct xmesa_renderbuffer *xrb; |
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| 453 | |||
| 454 | if ((ctx->DrawBuffer->_ColorDrawBufferIndexes[0] != BUFFER_BIT_FRONT_LEFT) && |
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| 455 | (ctx->DrawBuffer->_ColorDrawBufferIndexes[0] != BUFFER_BIT_BACK_LEFT)) |
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| 456 | return (swrast_line_func) NULL; |
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| 457 | if (ctx->RenderMode != GL_RENDER) return (swrast_line_func) NULL; |
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| 458 | if (ctx->Line.SmoothFlag) return (swrast_line_func) NULL; |
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| 459 | if (ctx->Texture._MaxEnabledTexImageUnit != -1) return (swrast_line_func) NULL; |
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| 460 | if (ctx->Light.ShadeModel != GL_FLAT) return (swrast_line_func) NULL; |
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| 461 | if (ctx->Line.StippleFlag) return (swrast_line_func) NULL; |
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| 462 | if (swrast->_RasterMask & MULTI_DRAW_BIT) return (swrast_line_func) NULL; |
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| 463 | |||
| 464 | xrb = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); |
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| 465 | |||
| 466 | if (xrb->ximage |
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| 467 | && swrast->_RasterMask==DEPTH_BIT |
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| 468 | && ctx->Depth.Func==GL_LESS |
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| 469 | && ctx->Depth.Mask==GL_TRUE |
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| 470 | && ctx->Visual.depthBits == DEFAULT_SOFTWARE_DEPTH_BITS |
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| 471 | && ctx->Line.Width==1.0F) { |
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| 472 | switch (xmesa->pixelformat) { |
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| 473 | case PF_Truecolor: |
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| 474 | return flat_TRUECOLOR_z_line; |
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| 475 | case PF_8A8B8G8R: |
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| 476 | return flat_8A8B8G8R_z_line; |
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| 477 | case PF_8A8R8G8B: |
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| 478 | return flat_8A8R8G8B_z_line; |
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| 479 | case PF_8R8G8B: |
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| 480 | return flat_8R8G8B_z_line; |
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| 481 | case PF_8R8G8B24: |
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| 482 | return flat_8R8G8B24_z_line; |
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| 483 | case PF_5R6G5B: |
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| 484 | return flat_5R6G5B_z_line; |
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| 485 | case PF_Dither_5R6G5B: |
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| 486 | return flat_DITHER_5R6G5B_z_line; |
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| 487 | default: |
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| 488 | return (swrast_line_func)NULL; |
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| 489 | } |
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| 490 | } |
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| 491 | if (xrb->ximage |
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| 492 | && swrast->_RasterMask==0 |
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| 493 | && ctx->Line.Width==1.0F) { |
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| 494 | switch (xmesa->pixelformat) { |
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| 495 | case PF_Truecolor: |
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| 496 | return flat_TRUECOLOR_line; |
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| 497 | case PF_8A8B8G8R: |
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| 498 | return flat_8A8B8G8R_line; |
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| 499 | case PF_8A8R8G8B: |
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| 500 | return flat_8A8R8G8B_line; |
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| 501 | case PF_8R8G8B: |
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| 502 | return flat_8R8G8B_line; |
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| 503 | case PF_8R8G8B24: |
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| 504 | return flat_8R8G8B24_line; |
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| 505 | case PF_5R6G5B: |
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| 506 | return flat_5R6G5B_line; |
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| 507 | case PF_Dither_5R6G5B: |
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| 508 | return flat_DITHER_5R6G5B_line; |
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| 509 | default: |
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| 510 | return (swrast_line_func)NULL; |
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| 511 | } |
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| 512 | } |
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| 513 | |||
| 514 | if (ctx->DrawBuffer->_NumColorDrawBuffers == 1 |
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| 515 | && ctx->DrawBuffer->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT |
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| 516 | && swrast->_RasterMask == LOGIC_OP_BIT |
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| 517 | && ctx->Color.LogicOp == GL_XOR |
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| 518 | && !ctx->Line.StippleFlag |
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| 519 | && !ctx->Line.SmoothFlag) { |
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| 520 | return xor_line; |
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| 521 | } |
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| 522 | |||
| 523 | #endif /* CHAN_BITS == 8 */ |
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| 524 | return (swrast_line_func) NULL; |
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| 525 | } |
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| 526 | |||
| 527 | |||
| 528 | /** |
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| 529 | * Override for the swrast line-selection function. Try to use one |
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| 530 | * of our internal line functions, otherwise fall back to the |
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| 531 | * standard swrast functions. |
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| 532 | */ |
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| 533 | void |
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| 534 | xmesa_choose_line(struct gl_context *ctx) |
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| 535 | { |
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| 536 | SWcontext *swrast = SWRAST_CONTEXT(ctx); |
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| 537 | |||
| 538 | if (!(swrast->Line = get_line_func( ctx ))) |
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| 539 | _swrast_choose_line( ctx ); |
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| 540 | } |