src/mesa/drivers/dri/intel/intel_tex.c

   1 #include "swrast/swrast.h"
   2 #include "main/texobj.h"
   3 #include "main/teximage.h"
   4 #include "main/mipmap.h"
   5 #include "drivers/common/meta.h"
   6 #include "intel_context.h"
   7 #include "intel_mipmap_tree.h"
   8 #include "intel_tex.h"
   9
  10 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  11
  12 static struct gl_texture_image *
  13 intelNewTextureImage(struct gl_context * ctx)
  14 {
  15    DBG("%s\n", __FUNCTION__);
  16    (void) ctx;
  17    return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
  18 }
  19
  20
  21 static struct gl_texture_object *
  22 intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
  23 {
  24    struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
  25
  26    DBG("%s\n", __FUNCTION__);
  27    _mesa_initialize_texture_object(&obj->base, name, target);
  28
  29    return &obj->base;
  30 }
  31
  32 static void
  33 intelDeleteTextureObject(struct gl_context *ctx,
  34                          struct gl_texture_object *texObj)
  35 {
  36    struct intel_context *intel = intel_context(ctx);
  37    struct intel_texture_object *intelObj = intel_texture_object(texObj);
  38
  39    if (intelObj->mt)
  40       intel_miptree_release(intel, &intelObj->mt);
  41
  42    _mesa_delete_texture_object(ctx, texObj);
  43 }
  44
  45
  46 static void
  47 intelFreeTextureImageData(struct gl_context * ctx, struct gl_texture_image *texImage)
  48 {
  49    struct intel_context *intel = intel_context(ctx);
  50    struct intel_texture_image *intelImage = intel_texture_image(texImage);
  51
  52    DBG("%s\n", __FUNCTION__);
  53
  54    if (intelImage->mt) {
  55       intel_miptree_release(intel, &intelImage->mt);
  56    }
  57
  58    if (texImage->Data) {
  59       _mesa_free_texmemory(texImage->Data);
  60       texImage->Data = NULL;
  61    }
  62 }
  63
  64 /**
  65  * Called via ctx->Driver.GenerateMipmap()
  66  * This is basically a wrapper for _mesa_meta_GenerateMipmap() which checks
  67  * if we'll be using software mipmap generation.  In that case, we need to
  68  * map/unmap the base level texture image.
  69  */
  70 static void
  71 intelGenerateMipmap(struct gl_context *ctx, GLenum target,
  72                     struct gl_texture_object *texObj)
  73 {
  74    if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {
  75       /* sw path: need to map texture images */
  76       struct intel_context *intel = intel_context(ctx);
  77       struct intel_texture_object *intelObj = intel_texture_object(texObj);
  78
  79       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
  80
  81       intel_tex_map_level_images(intel, intelObj, texObj->BaseLevel);
  82       _mesa_generate_mipmap(ctx, target, texObj);
  83       intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
  84
  85       {
  86          GLuint nr_faces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
  87          GLuint face, i;
  88          /* Update the level information in our private data in the new images,
  89           * since it didn't get set as part of a normal TexImage path.
  90           */
  91          for (face = 0; face < nr_faces; face++) {
  92             for (i = texObj->BaseLevel + 1; i < texObj->MaxLevel; i++) {
  93                struct intel_texture_image *intelImage =
  94                   intel_texture_image(texObj->Image[face][i]);
  95                if (!intelImage)
  96                   break;
  97                intelImage->level = i;
  98                intelImage->face = face;
  99                /* Unreference the miptree to signal that the new Data is a
 100                 * bare pointer from mesa.
 101                 */
 102                intel_miptree_release(intel, &intelImage->mt);
 103             }
 104          }
 105       }
 106    }
 107    else {
 108       _mesa_meta_GenerateMipmap(ctx, target, texObj);
 109    }
 110 }
 111
 112
 113 void
 114 intelInitTextureFuncs(struct dd_function_table *functions)
 115 {
 116    functions->ChooseTextureFormat = intelChooseTextureFormat;
 117    functions->GenerateMipmap = intelGenerateMipmap;
 118
 119    functions->NewTextureObject = intelNewTextureObject;
 120    functions->NewTextureImage = intelNewTextureImage;
 121    functions->DeleteTexture = intelDeleteTextureObject;
 122    functions->FreeTexImageData = intelFreeTextureImageData;
 123 }