From 848ff108a06c1a8171bab879669c08c9274908f5 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Wed, 6 Aug 2003 18:01:13 +0000 Subject: mga driver, brought over by Jon Smirl --- src/mesa/drivers/dri/mga/mgapixel.c | 690 ++++++++++++++++++++++++++++++++++++ 1 file changed, 690 insertions(+) create mode 100644 src/mesa/drivers/dri/mga/mgapixel.c (limited to 'src/mesa/drivers/dri/mga/mgapixel.c') diff --git a/src/mesa/drivers/dri/mga/mgapixel.c b/src/mesa/drivers/dri/mga/mgapixel.c new file mode 100644 index 00000000000..0bc4b3fac5f --- /dev/null +++ b/src/mesa/drivers/dri/mga/mgapixel.c @@ -0,0 +1,690 @@ +/* + * Copyright 2000 Compaq Computer Inc. and VA Linux Systems, Inc. + * 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 + * on the rights to use, copy, modify, merge, publish, distribute, sub + * license, 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 (including the next + * paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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. + * + * Authors: + * Keith Whitwell + * Gareth Hughes + */ +/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgapixel.c,v 1.9 2002/11/05 17:46:08 tsi Exp $ */ + +#include "enums.h" +#include "mtypes.h" +#include "macros.h" +#include "texutil.h" +#include "mgadd.h" +#include "mgacontext.h" +#include "mgaioctl.h" +#include "mgapixel.h" +#include "mgabuffers.h" + +#include "xf86drm.h" +#include "mga_common.h" + +#include "swrast/swrast.h" + +#define IS_AGP_MEM( mmesa, p ) \ + ((unsigned long)mmesa->mgaScreen->buffers.map <= ((unsigned long)p) && \ + (unsigned long)mmesa->mgaScreen->buffers.map + \ + (unsigned long)mmesa->mgaScreen->buffers.size > ((unsigned long)p)) +#define AGP_OFFSET( mmesa, p ) \ + (((unsigned long)p) - (unsigned long)mmesa->mgaScreen->buffers.map) + + +#if defined(MESA_packed_depth_stencil) +static GLboolean +check_depth_stencil_24_8( const GLcontext *ctx, GLenum type, + const struct gl_pixelstore_attrib *packing, + const void *pixels, GLint sz, + GLint pitch ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + return ( type == GL_UNSIGNED_INT_24_8_MESA && + ctx->Visual->DepthBits == 24 && + ctx->Visual->StencilBits == 8 && + mmesa->mgaScreen->cpp == 4 && + mmesa->hw_stencil && + !ctx->Pixel.IndexShift && + !ctx->Pixel.IndexOffset && + !ctx->Pixel.MapStencilFlag && + ctx->Pixel.DepthBias == 0.0 && + ctx->Pixel.DepthScale == 1.0 && + !packing->SwapBytes && + pitch % 32 == 0 && + pitch < 4096 ); +} +#endif + + +static GLboolean +check_depth( const GLcontext *ctx, GLenum type, + const struct gl_pixelstore_attrib *packing, + const void *pixels, GLint sz, GLint pitch ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + if ( IS_AGP_MEM( mmesa, pixels ) && + !( ( type == GL_UNSIGNED_INT && mmesa->mgaScreen->cpp == 4 ) || + ( type == GL_UNSIGNED_SHORT && mmesa->mgaScreen->cpp == 2 ) ) ) + return GL_FALSE; + + return ( ctx->Pixel.DepthBias == 0.0 && + ctx->Pixel.DepthScale == 1.0 && + !packing->SwapBytes && + pitch % 32 == 0 && + pitch < 4096 ); +} + + +static GLboolean +check_color( const GLcontext *ctx, GLenum type, GLenum format, + const struct gl_pixelstore_attrib *packing, + const void *pixels, GLint sz, GLint pitch ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + GLuint cpp = mmesa->mgaScreen->cpp; + + /* Can't do conversions on agp reads/draws. + */ + if ( IS_AGP_MEM( mmesa, pixels ) && + !( pitch % 32 == 0 && pitch < 4096 && + ( ( type == GL_UNSIGNED_BYTE && + cpp == 4 && format == GL_BGRA ) || + ( type == GL_UNSIGNED_INT_8_8_8_8 && + cpp == 4 && format == GL_BGRA ) || + ( type == GL_UNSIGNED_SHORT_5_6_5_REV && + cpp == 2 && format == GL_RGB ) ) ) ) + return GL_FALSE; + + return (!ctx->_ImageTransferState && + !packing->SwapBytes && + !packing->LsbFirst); +} + +static GLboolean +check_color_per_fragment_ops( const GLcontext *ctx ) +{ + return (!( 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.Unit[0]._ReallyEnabled || + ctx->Depth.OcclusionTest + ) && + ctx->Current.RasterPosValid && + ctx->Pixel.ZoomX == 1.0F && + (ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F)); +} + +static GLboolean +check_depth_per_fragment_ops( const GLcontext *ctx ) +{ + return ( ctx->Current.RasterPosValid && + ctx->Color.ColorMask[RCOMP] == 0 && + ctx->Color.ColorMask[BCOMP] == 0 && + ctx->Color.ColorMask[GCOMP] == 0 && + ctx->Color.ColorMask[ACOMP] == 0 && + ctx->Pixel.ZoomX == 1.0F && + ( ctx->Pixel.ZoomY == 1.0F || ctx->Pixel.ZoomY == -1.0F ) ); +} + +/* In addition to the requirements for depth: + */ +#if defined(MESA_packed_depth_stencil) +static GLboolean +check_stencil_per_fragment_ops( const GLcontext *ctx ) +{ + return ( !ctx->Pixel.IndexShift && + !ctx->Pixel.IndexOffset ); +} +#endif + + +static GLboolean +clip_pixelrect( const GLcontext *ctx, + const GLframebuffer *buffer, + GLint *x, GLint *y, + GLsizei *width, GLsizei *height, + GLint *skipPixels, GLint *skipRows, + GLint *size ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + *width = MIN2(*width, MAX_WIDTH); /* redundant? */ + + /* left clipping */ + if (*x < buffer->_Xmin) { + *skipPixels += (buffer->_Xmin - *x); + *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) { + *skipRows += (buffer->_Ymin - *y); + *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; + + *size = ((*y + *height - 1) * mmesa->mgaScreen->frontPitch + + (*x + *width - 1) * mmesa->mgaScreen->cpp); + + return GL_TRUE; +} + +static GLboolean +mgaTryReadPixels( GLcontext *ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *pack, + GLvoid *pixels ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + GLint size, skipPixels, skipRows; + GLint pitch = pack->RowLength ? pack->RowLength : width; + GLboolean ok; + + GLuint planemask; + GLuint source; +#if 0 + drmMGABlit blit; + GLuint dest; + GLint source_pitch, dest_pitch; + GLint delta_sx, delta_sy; + GLint delta_dx, delta_dy; + GLint blit_height, ydir; +#endif + + if (!clip_pixelrect(ctx, ctx->ReadBuffer, + &x, &y, &width, &height, + &skipPixels, &skipRows, &size)) { + return GL_TRUE; + } + + /* Only accelerate reading to agp buffers. + */ + if ( !IS_AGP_MEM(mmesa, (char *)pixels) || + !IS_AGP_MEM(mmesa, (char *)pixels + size) ) + return GL_FALSE; + + switch (format) { +#if defined(MESA_packed_depth_stencil) + case GL_DEPTH_STENCIL_MESA: + ok = check_depth_stencil_24_8(ctx, type, pack, pixels, size, pitch); + planemask = ~0; + source = mmesa->mgaScreen->depthOffset; + break; +#endif + + case GL_DEPTH_COMPONENT: + ok = check_depth(ctx, type, pack, pixels, size, pitch); + + /* Can't accelerate at this depth -- planemask does the wrong + * thing; it doesn't clear the low order bits in the + * destination, instead it leaves them untouched. + * + * Could get the acclerator to solid fill the destination with + * zeros first... Or get the cpu to do it... + */ + if (ctx->Visual.depthBits == 24) + return GL_FALSE; + + planemask = ~0; + source = mmesa->mgaScreen->depthOffset; + break; + + case GL_RGB: + case GL_BGRA: + ok = check_color(ctx, type, format, pack, pixels, size, pitch); + planemask = ~0; + source = (mmesa->draw_buffer == MGA_FRONT ? + mmesa->mgaScreen->frontOffset : + mmesa->mgaScreen->backOffset); + break; + + default: + return GL_FALSE; + } + + if (!ok) { + return GL_FALSE; + } + + + LOCK_HARDWARE( mmesa ); + +#if 0 + { + __DRIdrawablePrivate *dPriv = mmesa->driDrawable; + int nbox, retcode, i; + + UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT ); + + if (mmesa->dirty_cliprects & MGA_FRONT) + mgaUpdateRects( mmesa, MGA_FRONT ); + + nbox = dPriv->numClipRects; + + y = dPriv->h - y - height; + x += mmesa->drawX; + y += mmesa->drawY; + + dest = ((mmesa->mgaScreen->agp.handle + AGP_OFFSET(mmesa, pixels)) | + DO_dstmap_sys | DO_dstacc_agp); + source_pitch = mmesa->mgaScreen->frontPitch / mmesa->mgaScreen->cpp; + dest_pitch = pitch; + delta_sx = 0; + delta_sy = 0; + delta_dx = -x; + delta_dy = -y; + blit_height = 2*y + height; + ydir = -1; + + if (0) fprintf(stderr, "XX doing readpixel blit src_pitch %d dst_pitch %d\n", + source_pitch, dest_pitch); + + + + for (i = 0 ; i < nbox ; ) + { + int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, dPriv->numClipRects); + XF86DRIClipRectRec *box = dPriv->pClipRects; + drm_clip_rect_t *b = mmesa->sarea->boxes; + int n = 0; + + for ( ; i < nr ; i++) { + GLint bx = box[i].x1; + GLint by = box[i].y1; + GLint bw = box[i].x2 - bx; + GLint bh = box[i].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; + if (bw <= 0) continue; + if (bh <= 0) continue; + + b->x1 = bx; + b->y1 = by; + b->x2 = bx + bw; + b->y2 = by + bh; + b++; + n++; + } + + mmesa->sarea->nbox = n; + + if (n && (retcode = drmCommandWrite( mmesa->driFd, DRM_MGA_BLIT, + &blit, sizeof(drmMGABlit)))) { + fprintf(stderr, "blit ioctl failed, retcode = %d\n", retcode); + UNLOCK_HARDWARE( mmesa ); + exit(1); + } + } + + UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT ); + } +#endif + + UNLOCK_HARDWARE( mmesa ); + + return GL_TRUE; +} + +static void +mgaDDReadPixels( GLcontext *ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *pack, + GLvoid *pixels ) +{ + if (!mgaTryReadPixels( ctx, x, y, width, height, format, type, pack, pixels)) + _swrast_ReadPixels( ctx, x, y, width, height, format, type, pack, pixels); +} + + + + +static void do_draw_pix( GLcontext *ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLint pitch, + const void *pixels, + GLuint dest, GLuint planemask) +{ +#if 0 + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + drmMGABlit blit; + __DRIdrawablePrivate *dPriv = mmesa->driDrawable; + XF86DRIClipRectPtr pbox = dPriv->pClipRects; + int nbox = dPriv->numClipRects; + int retcode, i; + + y = dPriv->h - y - height; + x += mmesa->drawX; + y += mmesa->drawY; + + blit.dest = dest; + blit.planemask = planemask; + blit.source = ((mmesa->mgaScreen->agp.handle + AGP_OFFSET(mmesa, pixels)) + | SO_srcmap_sys | SO_srcacc_agp); + blit.dest_pitch = mmesa->mgaScreen->frontPitch / mmesa->mgaScreen->cpp; + blit.source_pitch = pitch; + blit.delta_sx = -x; + blit.delta_sy = -y; + blit.delta_dx = 0; + blit.delta_dy = 0; + if (ctx->Pixel.ZoomY == -1) { + blit.height = height; + blit.ydir = 1; + } else { + blit.height = height; + blit.ydir = -1; + } + + if (0) fprintf(stderr, + "doing drawpixel blit src_pitch %d dst_pitch %d\n", + blit.source_pitch, blit.dest_pitch); + + for (i = 0 ; i < nbox ; ) + { + int nr = MIN2(i + MGA_NR_SAREA_CLIPRECTS, dPriv->numClipRects); + XF86DRIClipRectRec *box = mmesa->pClipRects; + drm_clip_rect_t *b = mmesa->sarea->boxes; + int n = 0; + + for ( ; i < nr ; i++) { + GLint bx = box[i].x1; + GLint by = box[i].y1; + GLint bw = box[i].x2 - bx; + GLint bh = box[i].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; + if (bw <= 0) continue; + if (bh <= 0) continue; + + b->x1 = bx; + b->y1 = by; + b->x2 = bx + bw; + b->y2 = by + bh; + b++; + n++; + } + + mmesa->sarea->nbox = n; + + if (n && (retcode = drmCommandWrite( mmesa->driFd, DRM_MGA_BLIT, + &blit, sizeof(drmMGABlit)))) { + fprintf(stderr, "blit ioctl failed, retcode = %d\n", retcode); + UNLOCK_HARDWARE( mmesa ); + exit(1); + } + } +#endif +} + + + + +static GLboolean +mgaTryDrawPixels( GLcontext *ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *unpack, + const GLvoid *pixels ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + GLint size, skipPixels, skipRows; + GLint pitch = unpack->RowLength ? unpack->RowLength : width; + GLuint dest, planemask; + GLuint cpp = mmesa->mgaScreen->cpp; + + if (!clip_pixelrect(ctx, ctx->DrawBuffer, + &x, &y, &width, &height, + &skipPixels, &skipRows, &size)) { + return GL_TRUE; + } + + + switch (format) { +#if defined(MESA_packed_depth_stencil) + case GL_DEPTH_STENCIL_MESA: + dest = mmesa->mgaScreen->depthOffset; + planemask = ~0; + if (!check_depth_stencil_24_8(ctx, type, unpack, pixels, size, pitch) || + !check_depth_per_fragment_ops(ctx) || + !check_stencil_per_fragment_ops(ctx)) + return GL_FALSE; + break; +#endif + + case GL_DEPTH_COMPONENT: + dest = mmesa->mgaScreen->depthOffset; + + if (ctx->Visual.depthBits == 24) + planemask = ~0xff; + else + planemask = ~0; + + if (!check_depth(ctx, type, unpack, pixels, size, pitch) || + !check_depth_per_fragment_ops(ctx)) + return GL_FALSE; + break; + + case GL_RGB: + case GL_BGRA: + dest = (mmesa->draw_buffer == MGA_FRONT ? + mmesa->mgaScreen->frontOffset : + mmesa->mgaScreen->backOffset); + + planemask = mgaPackColor(cpp, + ctx->Color.ColorMask[RCOMP], + ctx->Color.ColorMask[GCOMP], + ctx->Color.ColorMask[BCOMP], + ctx->Color.ColorMask[ACOMP]); + + if (cpp == 2) + planemask |= planemask << 16; + + if (!check_color(ctx, type, format, unpack, pixels, size, pitch)) { + return GL_FALSE; + } + if (!check_color_per_fragment_ops(ctx)) { + return GL_FALSE; + } + break; + + default: + return GL_FALSE; + } + + LOCK_HARDWARE_QUIESCENT( mmesa ); + + if (mmesa->dirty_cliprects & MGA_FRONT) + mgaUpdateRects( mmesa, MGA_FRONT ); + + if ( IS_AGP_MEM(mmesa, (char *)pixels) && + IS_AGP_MEM(mmesa, (char *)pixels + size) ) + { + do_draw_pix( ctx, x, y, width, height, pitch, pixels, + dest, planemask ); + UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT ); + } + else + { + /* Pixels is in regular memory -- get dma buffers and perform + * upload through them. + */ +/* drmBufPtr buf = mgaGetBufferLocked(mmesa); */ + GLuint bufferpitch = (width*cpp+31)&~31; + + char *address = 0; /* mmesa->mgaScreen->agp.map; */ + + do { +/* GLuint rows = MIN2( height, MGA_DMA_BUF_SZ / bufferpitch ); */ + GLuint rows = height; + + + if (0) fprintf(stderr, "trying to upload %d rows (pitch %d)\n", + rows, bufferpitch); + + /* The texture conversion code is so slow that there is only + * negligble speedup when the buffers/images don't exactly + * match: + */ +#if 0 + if (cpp == 2) { + if (!_mesa_convert_texsubimage2d( MESA_FORMAT_RGB565, + 0, 0, width, rows, + bufferpitch, format, type, + unpack, pixels, address )) { +/* mgaReleaseBufLocked( mmesa, buf ); */ + UNLOCK_HARDWARE(mmesa); + return GL_FALSE; + } + } else { + if (!_mesa_convert_texsubimage2d( MESA_FORMAT_ARGB8888, + 0, 0, width, rows, + bufferpitch, format, type, + unpack, pixels, address )) { +/* mgaReleaseBufLocked( mmesa, buf ); */ + UNLOCK_HARDWARE(mmesa); + return GL_FALSE; + } + } +#else + memcpy( address, pixels, rows*bufferpitch ); +#endif + + do_draw_pix( ctx, x, y, width, rows, + bufferpitch/cpp, address, dest, planemask ); + + /* Fix me -- use multiple buffers to avoid flush. + */ + UPDATE_LOCK( mmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT ); + + pixels = (void *)((char *) pixels + rows * pitch); + height -= rows; + y += rows; + } while (height); + +/* mgaReleaseBufLocked( mmesa, buf ); */ + } + + UNLOCK_HARDWARE( mmesa ); + mmesa->dirty |= MGA_UPLOAD_CLIPRECTS; + + return GL_TRUE; +} + +static void +mgaDDDrawPixels( GLcontext *ctx, + GLint x, GLint y, GLsizei width, GLsizei height, + GLenum format, GLenum type, + const struct gl_pixelstore_attrib *unpack, + const GLvoid *pixels ) +{ + if (!mgaTryDrawPixels( ctx, x, y, width, height, format, type, + unpack, pixels )) + _swrast_DrawPixels( ctx, x, y, width, height, format, type, + unpack, pixels ); +} + + + +/* Stub functions - not a real allocator, always returns pointer to + * the same block of agp space which isn't used for anything else at + * present. + */ +#if defined(MESA_hacked_agp_allocator) +static void mgaDDFreeAgpMemory( GLcontext *ctx, void *ptr ) +{ + (void) ptr; +} + +static void *mgaDDAllocateAgpMemory( GLcontext *ctx, GLsizei size ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + if (size < mmesa->mgaScreen->textureSize[MGA_AGP_HEAP]) + return mmesa->mgaScreen->texVirtual[MGA_AGP_HEAP]; + else + return 0; +} + +static GLint mgaDDGetAgpOffset( GLcontext *ctx, const void *ptr ) +{ + mgaContextPtr mmesa = MGA_CONTEXT(ctx); + + if (!IS_AGP_MEM(mmesa, ptr)) + return -1; + + return AGP_OFFSET(mmesa, ptr); +} +#endif + + +void mgaDDInitPixelFuncs( GLcontext *ctx ) +{ +#if defined (MESA_experimetal_agp_allocator) + ctx->Driver.AllocateAgpMemory = mgaDDAllocateAgpMemory; + ctx->Driver.GetAgpOffset = mgaDDGetAgpOffset; + ctx->Driver.FreeAgpMemory = mgaDDFreeAgpMemory; +#endif + + /* Pixel path fallbacks. + */ + ctx->Driver.Accum = _swrast_Accum; + ctx->Driver.Bitmap = _swrast_Bitmap; + ctx->Driver.CopyPixels = _swrast_CopyPixels; + ctx->Driver.DrawPixels = _swrast_DrawPixels; + ctx->Driver.ReadPixels = _swrast_ReadPixels; + + if (getenv("MGA_BLIT_PIXELS")) { + ctx->Driver.ReadPixels = mgaDDReadPixels; /* requires agp dest */ + ctx->Driver.DrawPixels = mgaDDDrawPixels; /* works with agp/normal mem */ + } +} -- cgit v1.2.3