X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fstate_tracker%2Fst_gen_mipmap.c;h=e656908bedec0cb6a2cd47cdf29d974cc88339b0;hb=1975208919a273018a2cda87e765870c5f86d01f;hp=453be425bcb02fb34554a633bc918ddba801d915;hpb=394ff065f33bdf4f9b5bac11e85d18e3ce4eb42f;p=mesa.git

diff --git a/src/mesa/state_tracker/st_gen_mipmap.c b/src/mesa/state_tracker/st_gen_mipmap.c
index 453be425bcb..e656908bede 100644
--- a/src/mesa/state_tracker/st_gen_mipmap.c
+++ b/src/mesa/state_tracker/st_gen_mipmap.c
@@ -39,9 +39,9 @@
 
 #include "st_debug.h"
 #include "st_context.h"
+#include "st_texture.h"
 #include "st_gen_mipmap.h"
 #include "st_cb_texture.h"
-#include "st_inlines.h"
 
 
 /**
@@ -79,6 +79,7 @@ st_render_mipmap(struct st_context *st,
    struct pipe_sampler_view *psv = st_get_texture_sampler_view(stObj, pipe);
    const uint face = _mesa_tex_target_to_face(target);
 
+   assert(psv->texture == stObj->pt);
    assert(target != GL_TEXTURE_3D); /* not done yet */
 
    /* check if we can render in the texture's format */
@@ -94,6 +95,62 @@ st_render_mipmap(struct st_context *st,
 }
 
 
+/**
+ * Helper function to decompress an image.  The result is a 32-bpp RGBA
+ * image with stride==width.
+ */
+static void
+decompress_image(enum pipe_format format,
+                 const uint8_t *src, uint8_t *dst,
+                 unsigned width, unsigned height)
+{
+   const struct util_format_description *desc = util_format_description(format);
+   const uint bw = util_format_get_blockwidth(format);
+   const uint bh = util_format_get_blockheight(format);
+   const uint dst_stride = 4 * MAX2(width, bw);
+   const uint src_stride = util_format_get_stride(format, width);
+
+   desc->unpack_rgba_8unorm(dst, dst_stride, src, src_stride, width, height);
+
+   if (width < bw || height < bh) {
+      /* We're decompressing an image smaller than the compression
+       * block size.  We don't want garbage pixel values in the region
+       * outside (width x height) so replicate pixels from the (width
+       * x height) region to fill out the (bw x bh) block size.
+       */
+      uint x, y;
+      for (y = 0; y < bh; y++) {
+         for (x = 0; x < bw; x++) {
+            if (x >= width || y >= height) {
+               uint p = (y * bw + x) * 4;
+               dst[p + 0] = dst[0];
+               dst[p + 1] = dst[1];
+               dst[p + 2] = dst[2];
+               dst[p + 3] = dst[3];
+            }
+         }
+      }
+   }
+}
+
+
+/**
+ * Helper function to compress an image.  The source is a 32-bpp RGBA image
+ * with stride==width.
+ */
+static void
+compress_image(enum pipe_format format,
+               const uint8_t *src, uint8_t *dst,
+               unsigned width, unsigned height)
+{
+   const struct util_format_description *desc = util_format_description(format);
+   const uint dst_stride = util_format_get_stride(format, width);
+   const uint src_stride = 4 * width;
+
+   desc->pack_rgba_8unorm(dst, dst_stride, src, src_stride, width, height);
+}
+
+
 /**
  * Software fallback for generate mipmap levels.
  */
@@ -109,14 +166,25 @@ fallback_generate_mipmap(GLcontext *ctx, GLenum target,
    uint dstLevel;
    GLenum datatype;
    GLuint comps;
+   GLboolean compressed;
    
    if (ST_DEBUG & DEBUG_FALLBACK)
       debug_printf("%s: fallback processing\n", __FUNCTION__);
 
    assert(target != GL_TEXTURE_3D); /* not done yet */
 
-   _mesa_format_to_type_and_comps(texObj->Image[face][baseLevel]->TexFormat,
-                                  &datatype, &comps);
+   compressed =
+      _mesa_is_format_compressed(texObj->Image[face][baseLevel]->TexFormat);
+
+   if (compressed) {
+      datatype = GL_UNSIGNED_BYTE;
+      comps = 4;
+   }
+   else {
+      _mesa_format_to_type_and_comps(texObj->Image[face][baseLevel]->TexFormat,
+                                     &datatype, &comps);
+      assert(comps > 0 && "bad texture format in fallback_generate_mipmap()");
+   }
 
    for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
       const uint srcLevel = dstLevel - 1;
@@ -131,13 +199,13 @@ fallback_generate_mipmap(GLcontext *ctx, GLenum target,
       ubyte *dstData;
       int srcStride, dstStride;
 
-      srcTrans = st_cond_flush_get_tex_transfer(st_context(ctx), pt, face,
+      srcTrans = pipe_get_transfer(st_context(ctx)->pipe, pt, face,
 						srcLevel, zslice,
 						PIPE_TRANSFER_READ, 0, 0,
                                                 srcWidth, srcHeight);
 						
 
-      dstTrans = st_cond_flush_get_tex_transfer(st_context(ctx), pt, face,
+      dstTrans = pipe_get_transfer(st_context(ctx)->pipe, pt, face,
 						dstLevel, zslice,
 						PIPE_TRANSFER_WRITE, 0, 0,
 						dstWidth, dstHeight);
@@ -148,14 +216,49 @@ fallback_generate_mipmap(GLcontext *ctx, GLenum target,
       srcStride = srcTrans->stride / util_format_get_blocksize(srcTrans->resource->format);
       dstStride = dstTrans->stride / util_format_get_blocksize(dstTrans->resource->format);
 
-      _mesa_generate_mipmap_level(target, datatype, comps,
-                                  0 /*border*/,
-                                  srcWidth, srcHeight, srcDepth,
-                                  srcData,
-                                  srcStride, /* stride in texels */
-                                  dstWidth, dstHeight, dstDepth,
-                                  dstData,
-                                  dstStride); /* stride in texels */
+      if (compressed) {
+         const enum pipe_format format = pt->format;
+         const uint bw = util_format_get_blockwidth(format);
+         const uint bh = util_format_get_blockheight(format);
+         const uint srcWidth2 = align(srcWidth, bw);
+         const uint srcHeight2 = align(srcHeight, bh);
+         const uint dstWidth2 = align(dstWidth, bw);
+         const uint dstHeight2 = align(dstHeight, bh);
+         uint8_t *srcTemp, *dstTemp;
+
+         assert(comps == 4);
+
+         srcTemp = malloc(srcWidth2 * srcHeight2 * comps + 000);
+         dstTemp = malloc(dstWidth2 * dstHeight2 * comps + 000);
+
+         /* decompress the src image: srcData -> srcTemp */
+         decompress_image(format, srcData, srcTemp, srcWidth, srcHeight);
+
+         _mesa_generate_mipmap_level(target, datatype, comps,
+                                     0 /*border*/,
+                                     srcWidth2, srcHeight2, srcDepth,
+                                     srcTemp,
+                                     srcWidth2, /* stride in texels */
+                                     dstWidth2, dstHeight2, dstDepth,
+                                     dstTemp,
+                                     dstWidth2); /* stride in texels */
+
+         /* compress the new image: dstTemp -> dstData */
+         compress_image(format, dstTemp, dstData, dstWidth, dstHeight);
+
+         free(srcTemp);
+         free(dstTemp);
+      }
+      else {
+         _mesa_generate_mipmap_level(target, datatype, comps,
+                                     0 /*border*/,
+                                     srcWidth, srcHeight, srcDepth,
+                                     srcData,
+                                     srcStride, /* stride in texels */
+                                     dstWidth, dstHeight, dstDepth,
+                                     dstData,
+                                     dstStride); /* stride in texels */
+      }
 
       pipe_transfer_unmap(pipe, srcTrans);
       pipe_transfer_unmap(pipe, dstTrans);
@@ -181,7 +284,6 @@ compute_num_levels(GLcontext *ctx,
       return 1;
    }
    else {
-      const GLuint maxLevels = texObj->MaxLevel - texObj->BaseLevel + 1;
       const struct gl_texture_image *baseImage = 
          _mesa_get_tex_image(ctx, texObj, target, texObj->BaseLevel);
       GLuint size, numLevels;
@@ -189,14 +291,16 @@ compute_num_levels(GLcontext *ctx,
       size = MAX2(baseImage->Width2, baseImage->Height2);
       size = MAX2(size, baseImage->Depth2);
 
-      numLevels = 0;
+      numLevels = texObj->BaseLevel;
 
       while (size > 0) {
          numLevels++;
          size >>= 1;
       }
 
-      numLevels = MIN2(numLevels, maxLevels);
+      numLevels = MIN2(numLevels, texObj->MaxLevel + 1);
+
+      assert(numLevels >= 1);
 
       return numLevels;
    }
@@ -220,7 +324,7 @@ st_generate_mipmap(GLcontext *ctx, GLenum target,
    if (!pt)
       return;
 
-   /* find expected last mipmap level */
+   /* find expected last mipmap level to generate */
    lastLevel = compute_num_levels(ctx, texObj, target) - 1;
 
    if (lastLevel == 0)
@@ -231,7 +335,6 @@ st_generate_mipmap(GLcontext *ctx, GLenum target,
        * mipmap levels we need to generate.  So allocate a new texture.
        */
       struct pipe_resource *oldTex = stObj->pt;
-      GLboolean needFlush;
 
       /* create new texture with space for more levels */
       stObj->pt = st_texture_create(st,
@@ -251,7 +354,7 @@ st_generate_mipmap(GLcontext *ctx, GLenum target,
       /* This will copy the old texture's base image into the new texture
        * which we just allocated.
        */
-      st_finalize_texture(ctx, st->pipe, texObj, &needFlush);
+      st_finalize_texture(ctx, st->pipe, texObj);
 
       /* release the old tex (will likely be freed too) */
       pipe_resource_reference(&oldTex, NULL);
@@ -260,12 +363,12 @@ st_generate_mipmap(GLcontext *ctx, GLenum target,
       pt = stObj->pt;
    }
 
-   assert(lastLevel <= pt->last_level);
+   assert(pt->last_level >= lastLevel);
 
-   /* Recall that the Mesa BaseLevel image is stored in the gallium
-    * texture's level[0] position.  So pass baseLevel=0 here.
+   /* Try to generate the mipmap by rendering/texturing.  If that fails,
+    * use the software fallback.
     */
-   if (!st_render_mipmap(st, target, stObj, 0, lastLevel)) {
+   if (!st_render_mipmap(st, target, stObj, baseLevel, lastLevel)) {
       fallback_generate_mipmap(ctx, target, texObj);
    }
 
@@ -297,7 +400,9 @@ st_generate_mipmap(GLcontext *ctx, GLenum target,
 
       dstImage->TexFormat = srcImage->TexFormat;
 
-      stImage = (struct st_texture_image *) dstImage;
+      stImage = st_texture_image(dstImage);
+      stImage->level = dstLevel;
+
       pipe_resource_reference(&stImage->pt, pt);
    }
 }