| /* |
| * Mesa 3-D graphics library |
| * |
| * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| |
| /* |
| * 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 "main/macros.h" |
| #include "main/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( struct gl_context *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( struct gl_context *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._MaxEnabledTexImageUnit == -1 |
| && 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]) |
| |
| |
| /* |
| * 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, 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 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(struct gl_context *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[VARYING_SLOT_POS][0]; |
| int y0 = YFLIP(xrb, (GLint) vert0->attrib[VARYING_SLOT_POS][1]); |
| int x1 = (GLint) vert1->attrib[VARYING_SLOT_POS][0]; |
| int y1 = YFLIP(xrb, (GLint) vert1->attrib[VARYING_SLOT_POS][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 /* 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(struct gl_context *ctx) |
| { |
| #if CHAN_BITS == 8 |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| XMesaContext xmesa = XMESA_CONTEXT(ctx); |
| const struct xmesa_renderbuffer *xrb; |
| |
| if ((ctx->DrawBuffer->_ColorDrawBufferIndexes[0] != BUFFER_BIT_FRONT_LEFT) && |
| (ctx->DrawBuffer->_ColorDrawBufferIndexes[0] != BUFFER_BIT_BACK_LEFT)) |
| 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._MaxEnabledTexImageUnit != -1) 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; |
| |
| xrb = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); |
| |
| 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; |
| 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; |
| default: |
| return (swrast_line_func)NULL; |
| } |
| } |
| |
| if (ctx->DrawBuffer->_NumColorDrawBuffers == 1 |
| && ctx->DrawBuffer->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT |
| && swrast->_RasterMask == LOGIC_OP_BIT |
| && ctx->Color.LogicOp == GL_XOR |
| && !ctx->Line.StippleFlag |
| && !ctx->Line.SmoothFlag) { |
| return xor_line; |
| } |
| |
| #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(struct gl_context *ctx) |
| { |
| SWcontext *swrast = SWRAST_CONTEXT(ctx); |
| |
| if (!(swrast->Line = get_line_func( ctx ))) |
| _swrast_choose_line( ctx ); |
| } |