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

   1 #include "swrast/swrast.h"
   2 #include "main/renderbuffer.h"
   3 #include "main/texobj.h"
   4 #include "main/teximage.h"
   5 #include "main/mipmap.h"
   6 #include "drivers/common/meta.h"
   7 #include "intel_context.h"
   8 #include "intel_mipmap_tree.h"
   9 #include "intel_tex.h"
  10
  11 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  12
  13 static struct gl_texture_image *
  14 intelNewTextureImage(struct gl_context * ctx)
  15 {
  16    DBG("%s\n", __FUNCTION__);
  17    (void) ctx;
  18    return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
  19 }
  20
  21
  22 static struct gl_texture_object *
  23 intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
  24 {
  25    struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
  26
  27    DBG("%s\n", __FUNCTION__);
  28    _mesa_initialize_texture_object(&obj->base, name, target);
  29
  30    return &obj->base;
  31 }
  32
  33 static void
  34 intelDeleteTextureObject(struct gl_context *ctx,
  35                          struct gl_texture_object *texObj)
  36 {
  37    struct intel_context *intel = intel_context(ctx);
  38    struct intel_texture_object *intelObj = intel_texture_object(texObj);
  39
  40    if (intelObj->mt)
  41       intel_miptree_release(intel, &intelObj->mt);
  42
  43    _mesa_delete_texture_object(ctx, texObj);
  44 }
  45
  46
  47 static void
  48 intelFreeTextureImageData(struct gl_context * ctx, struct gl_texture_image *texImage)
  49 {
  50    struct intel_context *intel = intel_context(ctx);
  51    struct intel_texture_image *intelImage = intel_texture_image(texImage);
  52
  53    DBG("%s\n", __FUNCTION__);
  54
  55    if (intelImage->mt) {
  56       intel_miptree_release(intel, &intelImage->mt);
  57    }
  58
  59    if (texImage->Data) {
  60       _mesa_free_texmemory(texImage->Data);
  61       texImage->Data = NULL;
  62    }
  63
  64    if (intelImage->depth_rb) {
  65       _mesa_reference_renderbuffer(&intelImage->depth_rb, NULL);
  66    }
  67
  68    if (intelImage->stencil_rb) {
  69       _mesa_reference_renderbuffer(&intelImage->stencil_rb, NULL);
  70    }
  71 }
  72
  73 /**
  74  * Called via ctx->Driver.GenerateMipmap()
  75  * This is basically a wrapper for _mesa_meta_GenerateMipmap() which checks
  76  * if we'll be using software mipmap generation.  In that case, we need to
  77  * map/unmap the base level texture image.
  78  */
  79 static void
  80 intelGenerateMipmap(struct gl_context *ctx, GLenum target,
  81                     struct gl_texture_object *texObj)
  82 {
  83    if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {
  84       /* sw path: need to map texture images */
  85       struct intel_context *intel = intel_context(ctx);
  86       struct intel_texture_object *intelObj = intel_texture_object(texObj);
  87       struct gl_texture_image *first_image = texObj->Image[0][texObj->BaseLevel];
  88
  89       fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
  90
  91       intel_tex_map_level_images(intel, intelObj, texObj->BaseLevel);
  92       _mesa_generate_mipmap(ctx, target, texObj);
  93       intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
  94
  95       if (!_mesa_is_format_compressed(first_image->TexFormat)) {
  96          GLuint nr_faces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
  97          GLuint face, i;
  98          for (face = 0; face < nr_faces; face++) {
  99             for (i = texObj->BaseLevel + 1; i < texObj->MaxLevel; i++) {
 100                struct intel_texture_image *intelImage =
 101                   intel_texture_image(texObj->Image[face][i]);
 102                if (!intelImage)
 103                   break;
 104                /* Unreference the miptree to signal that the new Data is a
 105                 * bare pointer from mesa.
 106                 */
 107                intel_miptree_release(intel, &intelImage->mt);
 108             }
 109          }
 110       }
 111    }
 112    else {
 113       _mesa_meta_GenerateMipmap(ctx, target, texObj);
 114    }
 115 }
 116
 117
 118 void
 119 intelInitTextureFuncs(struct dd_function_table *functions)
 120 {
 121    functions->GenerateMipmap = intelGenerateMipmap;
 122
 123    functions->NewTextureObject = intelNewTextureObject;
 124    functions->NewTextureImage = intelNewTextureImage;
 125    functions->DeleteTexture = intelDeleteTextureObject;
 126    functions->FreeTexImageData = intelFreeTextureImageData;
 127 }