i915: Add support for accelerated glBitmap, shared from 965.

2 files changed, 2 insertions, 349 deletions

diff --git a/src/mesa/drivers/dri/i915/Makefile b/src/mesa/drivers/dri/i915/Makefile
index 7ef055ccad2..bdd3b852603 100644
--- a/src/mesa/drivers/dri/i915/Makefile
+++ b/src/mesa/drivers/dri/i915/Makefile
@@ -28,6 +28,7 @@ DRIVER_SOURCES = \
 	intel_tex_format.c \
 	intel_tex.c \
 	intel_pixel.c \
+	intel_pixel_bitmap.c \
 	intel_pixel_copy.c \
 	intel_pixel_read.c \
 	intel_pixel_draw.c \
diff --git a/src/mesa/drivers/dri/i915/intel_pixel_bitmap.c b/src/mesa/drivers/dri/i915/intel_pixel_bitmap.c
index 066d5b1fd4f..9085c7b0397 100644..120000
--- a/src/mesa/drivers/dri/i915/intel_pixel_bitmap.c
+++ b/src/mesa/drivers/dri/i915/intel_pixel_bitmap.c
@@ -1,349 +1 @@
-/**************************************************************************
- * 
- * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
- * 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, 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 portionsalloc
- * 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 TUNGSTEN GRAPHICS 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.
- * 
- **************************************************************************/
-
-#include "glheader.h"
-#include "enums.h"
-#include "image.h"
-#include "colormac.h"
-#include "mtypes.h"
-#include "macros.h"
-#include "bufferobj.h"
-#include "swrast/swrast.h"
-
-#include "intel_screen.h"
-#include "intel_context.h"
-#include "intel_ioctl.h"
-#include "intel_batchbuffer.h"
-#include "intel_blit.h"
-#include "intel_regions.h"
-#include "intel_buffer_objects.h"
-
-
-
-#define FILE_DEBUG_FLAG DEBUG_PIXEL
-
-
-/* Unlike the other intel_pixel_* functions, the expectation here is
- * that the incoming data is not in a PBO.  With the XY_TEXT blit
- * method, there's no benefit haveing it in a PBO, but we could
- * implement a path based on XY_MONO_SRC_COPY_BLIT which might benefit
- * PBO bitmaps.  I think they are probably pretty rare though - I
- * wonder if Xgl uses them?
- */
-static const GLubyte *map_pbo( GLcontext *ctx,
-			       GLsizei width, GLsizei height,
-			       const struct gl_pixelstore_attrib *unpack,
-			       const GLubyte *bitmap )
-{
-   GLubyte *buf;
-
-   if (!_mesa_validate_pbo_access(2, unpack, width, height, 1,
-				  GL_COLOR_INDEX, GL_BITMAP,
-				  (GLvoid *) bitmap)) {
-      _mesa_error(ctx, GL_INVALID_OPERATION,"glBitmap(invalid PBO access)");
-      return NULL;
-   }
-
-   buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
-					   GL_READ_ONLY_ARB,
-					   unpack->BufferObj);
-   if (!buf) {
-      _mesa_error(ctx, GL_INVALID_OPERATION, "glBitmap(PBO is mapped)");
-      return NULL;
-   }
-
-   return ADD_POINTERS(buf, bitmap);
-}
-
-static GLboolean test_bit( const GLubyte *src,
-			    GLuint bit )
-{
-   return (src[bit/8] & (1<<(bit % 8))) ? 1 : 0;
-}
-
-static void set_bit( GLubyte *dest,
-			  GLuint bit )
-{
-   dest[bit/8] |= 1 << (bit % 8);
-}
-
-static int align(int x, int align)
-{
-   return (x + align - 1) & ~(align - 1);
-}
-
-/* Extract a rectangle's worth of data from the bitmap.  Called
- * per-cliprect.
- */
-static GLuint get_bitmap_rect(GLsizei width, GLsizei height,
-			      const struct gl_pixelstore_attrib *unpack,
-			      const GLubyte *bitmap,
-			      GLuint x, GLuint y, 
-			      GLuint w, GLuint h,
-			      GLubyte *dest,
-			      GLuint row_align,
-			      GLboolean invert)
-{
-   GLuint src_offset = (x + unpack->SkipPixels) & 0x7;
-   GLuint mask = unpack->LsbFirst ? 0 : 7;
-   GLuint bit = 0;
-   GLint row, col;
-   GLint first, last;
-   GLint incr;
-   GLuint count = 0;
-
-   if (INTEL_DEBUG & DEBUG_PIXEL)
-      _mesa_printf("%s %d,%d %dx%d bitmap %dx%d skip %d src_offset %d mask %d\n",
-		   __FUNCTION__, x,y,w,h,width,height,unpack->SkipPixels, src_offset, mask);
-
-   if (invert) {
-      first = h-1;
-      last = 0;
-      incr = -1;
-   }
-   else {
-      first = 0;
-      last = h-1;
-      incr = 1;
-   }
-
-   /* Require that dest be pre-zero'd.
-    */
-   for (row = first; row != (last+incr); row += incr) {
-      const GLubyte *rowsrc = _mesa_image_address2d(unpack, bitmap, 
-						    width, height, 
-						    GL_COLOR_INDEX, GL_BITMAP, 
-						    y + row, x);
-
-      for (col = 0; col < w; col++, bit++) {
-	 if (test_bit(rowsrc, (col + src_offset) ^ mask)) {
-	    set_bit(dest, bit ^ 7);
-	    count++;
-	 }
-      }
-
-      if (row_align)
-	 bit = (bit + row_align - 1) & ~(row_align - 1);
-   }
-
-   return count;
-}
-
-
-
-
-/*
- * Render a bitmap.
- */
-static GLboolean
-do_blit_bitmap( GLcontext *ctx, 
-		GLint dstx, GLint dsty,
-		GLsizei width, GLsizei height,
-		const struct gl_pixelstore_attrib *unpack,
-		const GLubyte *bitmap )
-{
-   struct intel_context *intel = intel_context(ctx);
-   struct intel_region *dst = intel_drawbuf_region(intel);
-   
-   union {
-      GLuint ui;
-      GLubyte ub[4];
-   } color;
-
-
-   if (unpack->BufferObj->Name) {
-      bitmap = map_pbo(ctx, width, height, unpack, bitmap);
-      if (bitmap == NULL)
-	 return GL_TRUE;	/* even though this is an error, we're done */
-   }
-
-   UNCLAMPED_FLOAT_TO_CHAN(color.ub[0], ctx->Current.RasterColor[2]);
-   UNCLAMPED_FLOAT_TO_CHAN(color.ub[1], ctx->Current.RasterColor[1]);
-   UNCLAMPED_FLOAT_TO_CHAN(color.ub[2], ctx->Current.RasterColor[0]);
-   UNCLAMPED_FLOAT_TO_CHAN(color.ub[3], ctx->Current.RasterColor[3]);
-
-   /* Does zoom apply to bitmaps?
-    */
-   if (!intel_check_blit_fragment_ops(ctx) ||
-       ctx->Pixel.ZoomX != 1.0F || 
-       ctx->Pixel.ZoomY != 1.0F)
-      return GL_FALSE;
-
-   LOCK_HARDWARE(intel);
-
-   if (intel->driDrawable->numClipRects) {
-      __DRIdrawablePrivate *dPriv = intel->driDrawable;
-      drm_clip_rect_t *box = dPriv->pClipRects;
-      drm_clip_rect_t dest_rect;
-      GLint nbox = dPriv->numClipRects;
-      GLint srcx = 0, srcy = 0;
-      GLint orig_screen_x1, orig_screen_y2;
-      GLuint i;
-
-
-      orig_screen_x1 = dPriv->x + dstx;
-      orig_screen_y2 = dPriv->y + (dPriv->h - dsty);
-
-      /* Do scissoring in GL coordinates:
-       */
-x      if (ctx->Scissor.Enabled)
-      {
-	 GLint x = ctx->Scissor.X;
-	 GLint y = ctx->Scissor.Y;
-	 GLuint w = ctx->Scissor.Width;
-	 GLuint h = ctx->Scissor.Height;
-
-         if (!_mesa_clip_to_region(x, y, x+w-1, y+h-1, &dstx, &dsty, &width, &height))
-            goto out;
-      }
-
-      /* Convert from GL to hardware coordinates:
-       */
-      dsty = dPriv->y + (dPriv->h - dsty - height);  
-      dstx = dPriv->x + dstx;
-
-      dest_rect.x1 = dstx;
-      dest_rect.y1 = dsty;
-      dest_rect.x2 = dstx + width;
-      dest_rect.y2 = dsty + height;
-
-      for (i = 0; i < nbox; i++) {
-         drm_clip_rect_t rect;
-	 int box_w, box_h;
-	 GLint px, py;
-	 GLuint stipple[32];  
-
-         if (!intel_intersect_cliprects(&rect, &dest_rect, &box[i]))
-            continue;
-
-	 /* Now go back to GL coordinates to figure out what subset of
-	  * the bitmap we are uploading for this cliprect:
-	  */
-	 box_w = rect.x2 - rect.x1;
-	 box_h = rect.y2 - rect.y1;
-	 srcx = rect.x1 - orig_screen_x1;
-	 srcy = orig_screen_y2 - rect.y2;
-
-
-#define DY 32
-#define DX 32
-
-	 /* Then, finally, chop it all into chunks that can be
-	  * digested by hardware:
-	  */
-	 for (py = 0; py < box_h; py += DY) { 
-	    for (px = 0; px < box_w; px += DX) { 
-	       int h = MIN2(DY, box_h - py);
-	       int w = MIN2(DX, box_w - px); 
-	       GLuint sz = align(align(w,8) * h, 64)/8;
-	    
-	       assert(sz <= sizeof(stipple));
-	       memset(stipple, 0, sz);
-
-	       /* May need to adjust this when padding has been introduced in
-		* sz above:
-		*/
-	       if (get_bitmap_rect(width, height, unpack, 
-				   bitmap,
-				   srcx + px, srcy + py, w, h,
-				   (GLubyte *)stipple,
-				   8,
-				   GL_TRUE) == 0)
-		  continue;
-
-	       /* 
-		*/
-	       intelEmitImmediateColorExpandBlit( intel,
-						  dst->cpp,
-						  (GLubyte *)stipple, 
-						  sz,
-						  color.ui,
-						  dst->pitch,
-						  dst->buffer,
-						  0,
-						  dst->tiled,
-						  rect.x1 + px,
-						  rect.y2 - (py + h),
-						  w, h);
-	    } 
-	 } 
-      }
-   out:
-      intel_batchbuffer_flush(intel->batch);
-   }
-   UNLOCK_HARDWARE(intel);
-
-
-   if (unpack->BufferObj->Name) {
-      /* done with PBO so unmap it now */
-      ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT,
-                              unpack->BufferObj);
-   }
-
-   return GL_TRUE;
-}
-
-
-
-
-
-/* There are a large number of possible ways to implement bitmap on
- * this hardware, most of them have some sort of drawback.  Here are a
- * few that spring to mind:
- * 
- * Blit:
- *    - XY_MONO_SRC_BLT_CMD
- *         - use XY_SETUP_CLIP_BLT for cliprect clipping.
- *    - XY_TEXT_BLT
- *    - XY_TEXT_IMMEDIATE_BLT
- *         - blit per cliprect, subject to maximum immediate data size.
- *    - XY_COLOR_BLT 
- *         - per pixel or run of pixels
- *    - XY_PIXEL_BLT
- *         - good for sparse bitmaps
- *
- * 3D engine:
- *    - Point per pixel
- *    - Translate bitmap to an alpha texture and render as a quad
- *    - Chop bitmap up into 32x32 squares and render w/polygon stipple.
- */
-void
-intelBitmap(GLcontext * ctx,
-	    GLint x, GLint y,
-	    GLsizei width, GLsizei height,
-	    const struct gl_pixelstore_attrib *unpack,
-	    const GLubyte * pixels)
-{
-   if (do_blit_bitmap(ctx, x, y, width, height,
-                          unpack, pixels))
-      return;
-
-   if (INTEL_DEBUG & DEBUG_PIXEL)
-      _mesa_printf("%s: fallback to swrast\n", __FUNCTION__);
-
-   _swrast_Bitmap(ctx, x, y, width, height, unpack, pixels);
-}
+../intel/intel_pixel_bitmap.c
\ No newline at end of file