summaryrefslogtreecommitdiff
path: root/src/r128_texmem.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/r128_texmem.c')
-rw-r--r--src/r128_texmem.c301
1 files changed, 301 insertions, 0 deletions
diff --git a/src/r128_texmem.c b/src/r128_texmem.c
new file mode 100644
index 0000000..d011a75
--- /dev/null
+++ b/src/r128_texmem.c
@@ -0,0 +1,301 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/r128/r128_texmem.c,v 1.1 2002/02/22 21:44:58 dawes Exp $ */
+/**************************************************************************
+
+Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, 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
+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
+ATI, PRECISION INSIGHT AND/OR THEIR 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:
+ * Gareth Hughes <gareth@valinux.com>
+ * Kevin E. Martin <martin@valinux.com>
+ * Brian Paul <brianp@valinux.com>
+ */
+
+#include "r128_context.h"
+#include "r128_state.h"
+#include "r128_ioctl.h"
+#include "r128_tris.h"
+#include "r128_tex.h"
+
+#include "context.h"
+#include "macros.h"
+#include "simple_list.h"
+#include "texformat.h"
+#include "imports.h"
+
+#define TEX_0 1
+#define TEX_1 2
+
+
+/* Destroy hardware state associated with texture `t'.
+ */
+void r128DestroyTexObj( r128ContextPtr rmesa, r128TexObjPtr t )
+{
+ unsigned i;
+
+
+ /* See if it was the driver's current object.
+ */
+
+ if ( rmesa != NULL )
+ {
+ for ( i = 0 ; i < rmesa->glCtx->Const.MaxTextureUnits ; i++ )
+ {
+ if ( t == rmesa->CurrentTexObj[ i ] ) {
+ assert( t->base.bound & (1 << i) );
+ rmesa->CurrentTexObj[ i ] = NULL;
+ }
+ }
+ }
+}
+
+
+/**
+ * Upload the texture image associated with texture \a t at the specified
+ * level at the address relative to \a start.
+ */
+static void uploadSubImage( r128ContextPtr rmesa, r128TexObjPtr t,
+ GLint level,
+ GLint x, GLint y, GLint width, GLint height )
+{
+ struct gl_texture_image *image;
+ int texelsPerDword = 0;
+ int imageWidth, imageHeight;
+ int remaining, rows;
+ int format, dwords;
+ u_int32_t pitch, offset;
+ int i;
+
+ /* Ensure we have a valid texture to upload */
+ if ( ( level < 0 ) || ( level > R128_MAX_TEXTURE_LEVELS ) )
+ return;
+
+ image = t->base.tObj->Image[0][level];
+ if ( !image )
+ return;
+
+ switch ( image->TexFormat->TexelBytes ) {
+ case 1: texelsPerDword = 4; break;
+ case 2: texelsPerDword = 2; break;
+ case 4: texelsPerDword = 1; break;
+ }
+
+#if 1
+ /* FIXME: The subimage index calcs are wrong... */
+ x = 0;
+ y = 0;
+ width = image->Width;
+ height = image->Height;
+#endif
+
+ imageWidth = image->Width;
+ imageHeight = image->Height;
+
+ format = t->textureFormat >> 16;
+
+ /* The texel upload routines have a minimum width, so force the size
+ * if needed.
+ */
+ if ( imageWidth < texelsPerDword ) {
+ int factor;
+
+ factor = texelsPerDword / imageWidth;
+ imageWidth = texelsPerDword;
+ imageHeight /= factor;
+ if ( imageHeight == 0 ) {
+ /* In this case, the texel converter will actually walk a
+ * texel or two off the end of the image, but normal malloc
+ * alignment should prevent it from ever causing a fault.
+ */
+ imageHeight = 1;
+ }
+ }
+
+ /* We can't upload to a pitch less than 8 texels so we will need to
+ * linearly upload all modified rows for textures smaller than this.
+ * This makes the x/y/width/height different for the blitter and the
+ * texture walker.
+ */
+ if ( imageWidth >= 8 ) {
+ /* The texture walker and the blitter look identical */
+ pitch = imageWidth >> 3;
+ } else {
+ int factor;
+ int y2;
+ int start, end;
+
+ start = (y * imageWidth) & ~7;
+ end = (y + height) * imageWidth;
+
+ if ( end - start < 8 ) {
+ /* Handle the case where the total number of texels
+ * uploaded is < 8.
+ */
+ x = 0;
+ y = start / 8;
+ width = end - start;
+ height = 1;
+ } else {
+ /* Upload some number of full 8 texel blit rows */
+ factor = 8 / imageWidth;
+
+ y2 = y + height - 1;
+ y /= factor;
+ y2 /= factor;
+
+ x = 0;
+ width = 8;
+ height = y2 - y + 1;
+ }
+
+ /* Fixed pitch of 8 */
+ pitch = 1;
+ }
+
+ dwords = width * height / texelsPerDword;
+ offset = t->bufAddr + t->image[level - t->base.firstLevel].offset;
+
+#if ENABLE_PERF_BOXES
+ /* Bump the performace counter */
+ rmesa->c_textureBytes += (dwords << 2);
+#endif
+
+ if ( R128_DEBUG & DEBUG_VERBOSE_API ) {
+ fprintf( stderr, "r128UploadSubImage: %d,%d of %d,%d at %d,%d\n",
+ width, height, image->Width, image->Height, x, y );
+ fprintf( stderr, " blit ofs: 0x%07x pitch: 0x%x dwords: %d "
+ "level: %d format: %x\n",
+ (GLuint)offset, (GLuint)pitch, dwords, level, format );
+ }
+
+ /* Subdivide the texture if required */
+ if ( dwords <= R128_BUFFER_MAX_DWORDS / 2 ) {
+ rows = height;
+ } else {
+ rows = (R128_BUFFER_MAX_DWORDS * texelsPerDword) / (2 * width);
+ }
+
+ for ( i = 0, remaining = height ;
+ remaining > 0 ;
+ remaining -= rows, y += rows, i++ )
+ {
+ u_int32_t *dst;
+ drmBufPtr buffer;
+
+ assert(image->Data);
+
+ height = MIN2(remaining, rows);
+
+ /* Grab the indirect buffer for the texture blit */
+ LOCK_HARDWARE( rmesa );
+ buffer = r128GetBufferLocked( rmesa );
+
+ dst = (u_int32_t *)((char *)buffer->address + R128_HOSTDATA_BLIT_OFFSET);
+
+ /* Copy the next chunck of the texture image into the blit buffer */
+ {
+ const GLubyte *src = (const GLubyte *) image->Data +
+ (y * image->Width + x) * image->TexFormat->TexelBytes;
+ const GLuint bytes = width * height * image->TexFormat->TexelBytes;
+ memcpy(dst, src, bytes);
+ }
+
+ r128FireBlitLocked( rmesa, buffer,
+ offset, pitch, format,
+ x, y, width, height );
+ UNLOCK_HARDWARE( rmesa );
+ }
+
+ rmesa->new_state |= R128_NEW_CONTEXT;
+ rmesa->dirty |= R128_UPLOAD_CONTEXT | R128_UPLOAD_MASKS;
+}
+
+
+/* Upload the texture images associated with texture `t'. This might
+ * require removing our own and/or other client's texture objects to
+ * make room for these images.
+ */
+void r128UploadTexImages( r128ContextPtr rmesa, r128TexObjPtr t )
+{
+ const GLint numLevels = t->base.lastLevel - t->base.firstLevel + 1;
+ GLint i;
+
+ if ( R128_DEBUG & DEBUG_VERBOSE_API ) {
+ fprintf( stderr, "%s( %p, %p )\n",
+ __FUNCTION__, (void *) rmesa->glCtx, (void *) t );
+ }
+
+ assert(t);
+
+ LOCK_HARDWARE( rmesa );
+
+ if ( !t->base.memBlock ) {
+ int heap;
+
+
+ heap = driAllocateTexture( rmesa->texture_heaps, rmesa->nr_heaps,
+ (driTextureObject *) t );
+ if ( heap == -1 ) {
+ UNLOCK_HARDWARE( rmesa );
+ return;
+ }
+
+ /* Set the base offset of the texture image */
+ t->bufAddr = rmesa->r128Screen->texOffset[heap]
+ + t->base.memBlock->ofs;
+
+ /* Set texture offsets for each mipmap level */
+ if ( t->setup.tex_cntl & R128_MIP_MAP_DISABLE ) {
+ for ( i = 0 ; i < R128_MAX_TEXTURE_LEVELS ; i++ ) {
+ t->setup.tex_offset[i] = t->bufAddr;
+ }
+ } else {
+ for ( i = 0; i < numLevels; i++ ) {
+ const int j = numLevels - i - 1;
+ t->setup.tex_offset[j] = t->bufAddr + t->image[i].offset;
+ }
+ }
+ }
+
+ /* Let the world know we've used this memory recently.
+ */
+ driUpdateTextureLRU( (driTextureObject *) t );
+ UNLOCK_HARDWARE( rmesa );
+
+ /* Upload any images that are new */
+ if ( t->base.dirty_images[0] ) {
+ for ( i = 0 ; i < numLevels; i++ ) {
+ const GLint j = t->base.firstLevel + i; /* the texObj's level */
+ if ( t->base.dirty_images[0] & (1 << j) ) {
+ uploadSubImage( rmesa, t, j, 0, 0,
+ t->image[i].width, t->image[i].height );
+ }
+ }
+
+ rmesa->setup.tex_cntl_c |= R128_TEX_CACHE_FLUSH;
+ rmesa->dirty |= R128_UPLOAD_CONTEXT;
+ t->base.dirty_images[0] = 0;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 16:57:48 +0000