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Diffstat (limited to 'src/mesa/drivers/dri/mga/mgapixel.c')
-rw-r--r--src/mesa/drivers/dri/mga/mgapixel.c649
1 files changed, 0 insertions, 649 deletions
diff --git a/src/mesa/drivers/dri/mga/mgapixel.c b/src/mesa/drivers/dri/mga/mgapixel.c
deleted file mode 100644
index b8e365c714c..00000000000
--- a/src/mesa/drivers/dri/mga/mgapixel.c
+++ /dev/null
@@ -1,649 +0,0 @@
-/*
- * 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.
- */
-
-/**
- * \file mgapixel.c
- * Implement framebuffer pixel operations for MGA.
- *
- * \todo
- * Someday the accelerated \c glReadPixels and \c glDrawPixels paths need to
- * be resurrected. They are currently ifdef'ed out because they don't seem
- * to work and they only get activated some very rare circumstances.
- *
- * \author Keith Whitwell <keith@tungstengraphics.com>
- * \author Gareth Hughes <gareth@valinux.com>
- */
-
-#include "main/mtypes.h"
-#include "main/macros.h"
-#include "mgadd.h"
-#include "mgacontext.h"
-#include "mgaioctl.h"
-#include "mgapixel.h"
-#include "mgastate.h"
-
-#include "swrast/swrast.h"
-#include "main/imports.h"
-
-#if 0
-#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)
-
-
-static GLboolean
-check_depth_stencil_24_8( const struct gl_context *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 &&
- 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 );
-}
-
-
-static GLboolean
-check_depth( const struct gl_context *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 struct gl_context *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 struct gl_context *ctx )
-{
- return (!( ctx->Color.AlphaEnabled ||
- ctx->Depth.Test ||
- ctx->Fog.Enabled ||
- ctx->Scissor.Enabled ||
- ctx->Stencil._Enabled ||
- !ctx->Color.ColorMask[0][0] ||
- !ctx->Color.ColorMask[0][1] ||
- !ctx->Color.ColorMask[0][2] ||
- !ctx->Color.ColorMask[0][3] ||
- ctx->Color.ColorLogicOpEnabled ||
- ctx->Texture._EnabledUnits
- ) &&
- 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 struct gl_context *ctx )
-{
- return ( ctx->Current.RasterPosValid &&
- ctx->Color.ColorMask[0][RCOMP] == 0 &&
- ctx->Color.ColorMask[0][BCOMP] == 0 &&
- ctx->Color.ColorMask[0][GCOMP] == 0 &&
- ctx->Color.ColorMask[0][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 struct gl_context *ctx )
-{
- return ( !ctx->Pixel.IndexShift &&
- !ctx->Pixel.IndexOffset );
-}
-#endif
-
-
-static GLboolean
-clip_pixelrect( const struct gl_context *ctx,
- const struct gl_framebuffer *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( struct gl_context *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) {
- case GL_DEPTH_STENCIL:
- ok = check_depth_stencil_24_8(ctx, type, pack, pixels, size, pitch);
- planemask = ~0;
- source = mmesa->mgaScreen->depthOffset;
- break;
-
- 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
- {
- __DRIdrawable *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);
- drm_clip_rect_t *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( struct gl_context *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( struct gl_context *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;
- __DRIdrawable *dPriv = mmesa->driDrawable;
- drm_clip_rect_t 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);
- drm_clip_rect_t *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( struct gl_context *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) {
- case GL_DEPTH_STENCIL:
- 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;
-
- 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[0][RCOMP],
- ctx->Color.ColorMask[0][GCOMP],
- ctx->Color.ColorMask[0][BCOMP],
- ctx->Color.ColorMask[0][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( struct gl_context *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 );
-}
-#endif
-
-
-/* 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.
- */
-void mgaDDInitPixelFuncs( struct gl_context *ctx )
-{
-#if 0
- /* evidently, these functions don't always work */
- if (getenv("MGA_BLIT_PIXELS")) {
- ctx->Driver.ReadPixels = mgaDDReadPixels; /* requires agp dest */
- ctx->Driver.DrawPixels = mgaDDDrawPixels; /* works with agp/normal mem */
- }
-#endif
-}
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