diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915/intel_pixel.c')
-rw-r--r-- | src/mesa/drivers/dri/i915/intel_pixel.c | 530 |
1 files changed, 63 insertions, 467 deletions
diff --git a/src/mesa/drivers/dri/i915/intel_pixel.c b/src/mesa/drivers/dri/i915/intel_pixel.c index c3030d42b0..9018e3daef 100644 --- a/src/mesa/drivers/dri/i915/intel_pixel.c +++ b/src/mesa/drivers/dri/i915/intel_pixel.c @@ -1,6 +1,6 @@ /************************************************************************** * - * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. + * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a @@ -12,7 +12,7 @@ * the following conditions: * * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial portions + * next paragraph) shall be included in all copies or substantial portionsalloc * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS @@ -25,500 +25,96 @@ * **************************************************************************/ -#include "glheader.h" #include "enums.h" -#include "mtypes.h" -#include "macros.h" +#include "state.h" #include "swrast/swrast.h" -#include "intel_screen.h" #include "intel_context.h" -#include "intel_ioctl.h" -#include "intel_batchbuffer.h" - - - -static GLboolean -check_color( const GLcontext *ctx, GLenum type, GLenum format, - const struct gl_pixelstore_attrib *packing, - const void *pixels, GLint sz, GLint pitch ) -{ - intelContextPtr intel = INTEL_CONTEXT(ctx); - GLuint cpp = intel->intelScreen->cpp; - - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s\n", __FUNCTION__); - - if ( (pitch & 63) || - ctx->_ImageTransferState || - packing->SwapBytes || - packing->LsbFirst) { - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s: failed 1\n", __FUNCTION__); - return GL_FALSE; - } - - if ( type == GL_UNSIGNED_INT_8_8_8_8_REV && - cpp == 4 && - format == GL_BGRA ) { - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s: passed 2\n", __FUNCTION__); - return GL_TRUE; - } - - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s: failed\n", __FUNCTION__); - - return GL_FALSE; -} - -static GLboolean -check_color_per_fragment_ops( const GLcontext *ctx ) -{ - int result; - result = (!( ctx->Color.AlphaEnabled || - ctx->Depth.Test || - ctx->Fog.Enabled || - ctx->Scissor.Enabled || - ctx->Stencil.Enabled || - !ctx->Color.ColorMask[0] || - !ctx->Color.ColorMask[1] || - !ctx->Color.ColorMask[2] || - !ctx->Color.ColorMask[3] || - ctx->Color.ColorLogicOpEnabled || - ctx->Texture._EnabledUnits - ) && - ctx->Current.RasterPosValid); - - return result; -} - - -/** - * Clip the given rectangle against the buffer's bounds (including scissor). - * \param size returns the - * \return GL_TRUE if any pixels remain, GL_FALSE if totally clipped. - * - * XXX Replace this with _mesa_clip_drawpixels() and _mesa_clip_readpixels() - * from Mesa 6.4. We shouldn't apply scissor for ReadPixels. - */ -static GLboolean -clip_pixelrect( const GLcontext *ctx, - const GLframebuffer *buffer, - GLint *x, GLint *y, - GLsizei *width, GLsizei *height) -{ - /* left clipping */ - if (*x < buffer->_Xmin) { - *width -= (buffer->_Xmin - *x); - *x = buffer->_Xmin; - } - - /* right clipping */ - if (*x + *width > buffer->_Xmax) - *width -= (*x + *width - buffer->_Xmax - 1); - - if (*width <= 0) - return GL_FALSE; - - /* bottom clipping */ - if (*y < buffer->_Ymin) { - *height -= (buffer->_Ymin - *y); - *y = buffer->_Ymin; - } - - /* top clipping */ - if (*y + *height > buffer->_Ymax) - *height -= (*y + *height - buffer->_Ymax - 1); - - if (*height <= 0) - return GL_FALSE; - - return GL_TRUE; -} +#include "intel_pixel.h" +#include "intel_regions.h" /** - * Compute intersection of a clipping rectangle and pixel rectangle, - * returning results in x/y/w/hOut vars. - * \return GL_TRUE if there's intersection, GL_FALSE if disjoint. + * Check if any fragment operations are in effect which might effect + * glDraw/CopyPixels. */ -static INLINE GLboolean -intersect_region(const drm_clip_rect_t *box, - GLint x, GLint y, GLsizei width, GLsizei height, - GLint *xOut, GLint *yOut, GLint *wOut, GLint *hOut) -{ - GLint bx = box->x1; - GLint by = box->y1; - GLint bw = box->x2 - bx; - GLint bh = box->y2 - by; - - if (bx < x) bw -= x - bx, bx = x; - if (by < y) bh -= y - by, by = y; - if (bx + bw > x + width) bw = x + width - bx; - if (by + bh > y + height) bh = y + height - by; - - *xOut = bx; - *yOut = by; - *wOut = bw; - *hOut = bh; - - if (bw <= 0) return GL_FALSE; - if (bh <= 0) return GL_FALSE; - - return GL_TRUE; -} - - - -static GLboolean -intelTryReadPixels( GLcontext *ctx, - GLint x, GLint y, GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *pack, - GLvoid *pixels ) +GLboolean +intel_check_blit_fragment_ops(GLcontext * ctx) { - intelContextPtr intel = INTEL_CONTEXT(ctx); - GLint size = 0; /* not really used */ - GLint pitch = pack->RowLength ? pack->RowLength : width; - - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s\n", __FUNCTION__); - - /* Only accelerate reading to agp buffers. - */ - if ( !intelIsAgpMemory(intel, pixels, - pitch * height * intel->intelScreen->cpp ) ) { - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s: dest not agp\n", __FUNCTION__); - return GL_FALSE; - } - - /* Need GL_PACK_INVERT_MESA to cope with upsidedown results from - * blitter: - */ - if (!pack->Invert) { - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s: MESA_PACK_INVERT not set\n", __FUNCTION__); - return GL_FALSE; - } + if (ctx->NewState) + _mesa_update_state(ctx); - if (!check_color(ctx, type, format, pack, pixels, size, pitch)) - return GL_FALSE; - - switch ( intel->intelScreen->cpp ) { - case 4: - break; - default: - return GL_FALSE; - } - - - /* Although the blits go on the command buffer, need to do this and - * fire with lock held to guarentee cliprects and drawing offset are - * correct. - * - * This is an unusual situation however, as the code which flushes - * a full command buffer expects to be called unlocked. As a - * workaround, immediately flush the buffer on aquiring the lock. + /* XXX Note: Scissor could be done with the blitter: */ - intelFlush( &intel->ctx ); - LOCK_HARDWARE( intel ); - { - __DRIdrawablePrivate *dPriv = intel->driDrawable; - int nbox = dPriv->numClipRects; - int src_offset = intel->readRegion->offset; - int src_pitch = intel->intelScreen->front.pitch; - int dst_offset = intelAgpOffsetFromVirtual( intel, pixels); - drm_clip_rect_t *box = dPriv->pClipRects; - int i; - - assert(dst_offset != ~0); /* should have been caught above */ - - if (!clip_pixelrect(ctx, ctx->ReadBuffer, &x, &y, &width, &height)) { - UNLOCK_HARDWARE( intel ); - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s totally clipped -- nothing to do\n", - __FUNCTION__); - return GL_TRUE; - } - - /* convert to screen coords (y=0=top) */ - y = dPriv->h - y - height; - x += dPriv->x; - y += dPriv->y; - - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "readpixel blit src_pitch %d dst_pitch %d\n", - src_pitch, pitch); - - /* We don't really have to do window clipping for readpixels. - * The OpenGL spec says that pixels read from outside the - * visible window region (pixel ownership) have undefined value. - */ - for (i = 0 ; i < nbox ; i++) - { - GLint bx, by, bw, bh; - if (intersect_region(box+i, x, y, width, height, - &bx, &by, &bw, &bh)) { - intelEmitCopyBlitLocked( intel, - intel->intelScreen->cpp, - src_pitch, src_offset, - pitch, dst_offset, - bx, by, - bx - x, by - y, - bw, bh ); - } - } - } - UNLOCK_HARDWARE( intel ); - intelFinish( &intel->ctx ); - - return GL_TRUE; -} - -static void -intelReadPixels( GLcontext *ctx, - GLint x, GLint y, GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *pack, - GLvoid *pixels ) -{ - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s\n", __FUNCTION__); - - if (!intelTryReadPixels( ctx, x, y, width, height, format, type, pack, - pixels)) - _swrast_ReadPixels( ctx, x, y, width, height, format, type, pack, - pixels); + return !(ctx->_ImageTransferState || + ctx->Color.AlphaEnabled || + ctx->Depth.Test || + ctx->Fog.Enabled || + ctx->Scissor.Enabled || + ctx->Stencil.Enabled || + !ctx->Color.ColorMask[0] || + !ctx->Color.ColorMask[1] || + !ctx->Color.ColorMask[2] || + !ctx->Color.ColorMask[3] || + ctx->Texture._EnabledUnits || + ctx->FragmentProgram._Enabled || + ctx->Color.BlendEnabled); } - - -static void do_draw_pix( GLcontext *ctx, - GLint x, GLint y, GLsizei width, GLsizei height, - GLint pitch, - const void *pixels, - GLuint dest ) +GLboolean +intel_check_meta_tex_fragment_ops(GLcontext * ctx) { - intelContextPtr intel = INTEL_CONTEXT(ctx); - __DRIdrawablePrivate *dPriv = intel->driDrawable; - drm_clip_rect_t *box = dPriv->pClipRects; - int nbox = dPriv->numClipRects; - int i; - int src_offset = intelAgpOffsetFromVirtual( intel, pixels); - int src_pitch = pitch; - - assert(src_offset != ~0); /* should be caught earlier */ + if (ctx->NewState) + _mesa_update_state(ctx); - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s\n", __FUNCTION__); - - intelFlush( &intel->ctx ); - LOCK_HARDWARE( intel ); - if (ctx->DrawBuffer) - { - y -= height; /* cope with pixel zoom */ - - if (!clip_pixelrect(ctx, ctx->DrawBuffer, - &x, &y, &width, &height)) { - UNLOCK_HARDWARE( intel ); - return; - } - - y = dPriv->h - y - height; /* convert from gl to hardware coords */ - x += dPriv->x; - y += dPriv->y; - - for (i = 0 ; i < nbox ; i++ ) - { - GLint bx, by, bw, bh; - if (intersect_region(box + i, x, y, width, height, - &bx, &by, &bw, &bh)) { - intelEmitCopyBlitLocked( intel, - intel->intelScreen->cpp, - src_pitch, src_offset, - intel->intelScreen->front.pitch, - intel->drawRegion->offset, - bx - x, by - y, - bx, by, - bw, bh ); - } - } - } - UNLOCK_HARDWARE( intel ); - intelFinish( &intel->ctx ); + /* Some of _ImageTransferState (scale, bias) could be done with + * fragment programs on i915. + */ + return !(ctx->_ImageTransferState || ctx->Fog.Enabled || /* not done yet */ + ctx->Texture._EnabledUnits || ctx->FragmentProgram._Enabled); } - - -static GLboolean -intelTryDrawPixels( GLcontext *ctx, - GLint x, GLint y, GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels ) +/* The intel_region struct doesn't really do enough to capture the + * format of the pixels in the region. For now this code assumes that + * the region is a display surface and hence is either ARGB8888 or + * RGB565. + * XXX FBO: If we'd pass in the intel_renderbuffer instead of region, we'd + * know the buffer's pixel format. + * + * \param format as given to glDraw/ReadPixels + * \param type as given to glDraw/ReadPixels + */ +GLboolean +intel_check_blit_format(struct intel_region * region, + GLenum format, GLenum type) { - intelContextPtr intel = INTEL_CONTEXT(ctx); - GLint pitch = unpack->RowLength ? unpack->RowLength : width; - GLuint dest; - GLuint cpp = intel->intelScreen->cpp; - GLint size = width * pitch * cpp; - - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s\n", __FUNCTION__); - - switch (format) { - case GL_RGB: - case GL_RGBA: - case GL_BGRA: - dest = intel->drawRegion->offset; - - /* Planemask doesn't have full support in blits. - */ - if (!ctx->Color.ColorMask[RCOMP] || - !ctx->Color.ColorMask[GCOMP] || - !ctx->Color.ColorMask[BCOMP] || - !ctx->Color.ColorMask[ACOMP]) { - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s: planemask\n", __FUNCTION__); - return GL_FALSE; - } - - /* Can't do conversions on agp reads/draws. - */ - if ( !intelIsAgpMemory( intel, pixels, size ) ) { - if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s: not agp memory\n", __FUNCTION__); - return GL_FALSE; - } - - if (!check_color(ctx, type, format, unpack, pixels, size, pitch)) { - return GL_FALSE; - } - if (!check_color_per_fragment_ops(ctx)) { - return GL_FALSE; - } - - if (ctx->Pixel.ZoomX != 1.0F || - ctx->Pixel.ZoomY != -1.0F) - return GL_FALSE; - break; - - default: - return GL_FALSE; + if (region->cpp == 4 && + (type == GL_UNSIGNED_INT_8_8_8_8_REV || + type == GL_UNSIGNED_BYTE) && format == GL_BGRA) { + return GL_TRUE; } - if ( intelIsAgpMemory(intel, pixels, size) ) - { - do_draw_pix( ctx, x, y, width, height, pitch, pixels, dest ); + if (region->cpp == 2 && + type == GL_UNSIGNED_SHORT_5_6_5_REV && format == GL_BGR) { return GL_TRUE; } - else if (0) - { - /* Pixels is in regular memory -- get dma buffers and perform - * upload through them. No point doing this for regular uploads - * but once we remove some of the restrictions above (colormask, - * pixelformat conversion, zoom?, etc), this could be a win. - */ - } - else - return GL_FALSE; - - return GL_FALSE; -} -static void -intelDrawPixels( GLcontext *ctx, - GLint x, GLint y, GLsizei width, GLsizei height, - GLenum format, GLenum type, - const struct gl_pixelstore_attrib *unpack, - const GLvoid *pixels ) -{ if (INTEL_DEBUG & DEBUG_PIXEL) - fprintf(stderr, "%s\n", __FUNCTION__); - - if (intelTryDrawPixels( ctx, x, y, width, height, format, type, - unpack, pixels )) - return; - - if (ctx->FragmentProgram._Current == ctx->FragmentProgram._TexEnvProgram) { - /* - * We don't want the i915 texenv program to be applied to DrawPixels. - * This is really just a performance optimization (mesa will other- - * wise happily run the fragment program on each pixel in the image). - */ - struct gl_fragment_program *fpSave = ctx->FragmentProgram._Current; - /* can't just set current frag prog to 0 here as on buffer resize - we'll get new state checks which will segfault. Remains a hack. */ - ctx->FragmentProgram._Current = NULL; - ctx->FragmentProgram._UseTexEnvProgram = GL_FALSE; - ctx->FragmentProgram._Active = GL_FALSE; - _swrast_DrawPixels( ctx, x, y, width, height, format, type, - unpack, pixels ); - ctx->FragmentProgram._Current = fpSave; - ctx->FragmentProgram._UseTexEnvProgram = GL_TRUE; - ctx->FragmentProgram._Active = GL_TRUE; - } - else { - _swrast_DrawPixels( ctx, x, y, width, height, format, type, - unpack, pixels ); - } -} - - - - -/** - * 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 -intelCopyPixels( GLcontext *ctx, - GLint srcx, GLint srcy, GLsizei width, GLsizei height, - GLint destx, GLint desty, GLenum type ) -{ -#if 0 - const XMesaContext xmesa = XMESA_CONTEXT(ctx); - const SWcontext *swrast = SWRAST_CONTEXT( ctx ); - XMesaDisplay *dpy = xmesa->xm_visual->display; - const XMesaDrawable drawBuffer = xmesa->xm_draw_buffer->buffer; - const XMesaDrawable readBuffer = xmesa->xm_read_buffer->buffer; - const XMesaGC gc = xmesa->xm_draw_buffer->gc; - - ASSERT(dpy); - ASSERT(gc); + fprintf(stderr, "%s: bad format for blit (cpp %d, type %s format %s)\n", + __FUNCTION__, region->cpp, + _mesa_lookup_enum_by_nr(type), _mesa_lookup_enum_by_nr(format)); - if (drawBuffer && /* buffer != 0 means it's a Window or Pixmap */ - readBuffer && - type == GL_COLOR && - (swrast->_RasterMask & ~CLIP_BIT) == 0 && /* no blend, z-test, etc */ - ctx->_ImageTransferState == 0 && /* no color tables, scale/bias, etc */ - ctx->Pixel.ZoomX == 1.0 && /* no zooming */ - ctx->Pixel.ZoomY == 1.0) { - /* Note: we don't do any special clipping work here. We could, - * but X will do it for us. - */ - srcy = FLIP(xmesa->xm_read_buffer, srcy) - height + 1; - desty = FLIP(xmesa->xm_draw_buffer, desty) - height + 1; - XCopyArea(dpy, readBuffer, drawBuffer, gc, - srcx, srcy, width, height, destx, desty); - } -#else - _swrast_CopyPixels(ctx, srcx, srcy, width, height, destx, desty, type ); -#endif + return GL_FALSE; } - - -void intelInitPixelFuncs( struct dd_function_table *functions ) +void +intelInitPixelFuncs(struct dd_function_table *functions) { + functions->Accum = _swrast_Accum; + functions->Bitmap = _swrast_Bitmap; functions->CopyPixels = intelCopyPixels; - if (!getenv("INTEL_NO_BLITS")) { - functions->ReadPixels = intelReadPixels; - functions->DrawPixels = intelDrawPixels; - } + functions->ReadPixels = intelReadPixels; + functions->DrawPixels = intelDrawPixels; } |