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 #include "intel_fbo.h"
  11
  12 #define FILE_DEBUG_FLAG DEBUG_TEXTURE
  13
  14 static struct gl_texture_image *
  15 intelNewTextureImage(struct gl_context * ctx)
  16 {
  17    DBG("%s\n", __FUNCTION__);
  18    (void) ctx;
  19    return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
  20 }
  21
  22 static void
  23 intelDeleteTextureImage(struct gl_context * ctx, struct gl_texture_image *img)
  24 {
  25    /* nothing special (yet) for intel_texture_image */
  26    _mesa_delete_texture_image(ctx, img);
  27 }
  28
  29
  30 static struct gl_texture_object *
  31 intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
  32 {
  33    struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
  34
  35    (void) ctx;
  36
  37    DBG("%s\n", __FUNCTION__);
  38    _mesa_initialize_texture_object(&obj->base, name, target);
  39
  40    obj->needs_validate = true;
  41
  42    return &obj->base;
  43 }
  44
  45 static void
  46 intelDeleteTextureObject(struct gl_context *ctx,
  47                          struct gl_texture_object *texObj)
  48 {
  49    struct intel_texture_object *intelObj = intel_texture_object(texObj);
  50
  51    intel_miptree_release(&intelObj->mt);
  52    _mesa_delete_texture_object(ctx, texObj);
  53 }
  54
  55 static GLboolean
  56 intel_alloc_texture_image_buffer(struct gl_context *ctx,
  57                                  struct gl_texture_image *image)
  58 {
  59    struct intel_context *intel = intel_context(ctx);
  60    struct intel_texture_image *intel_image = intel_texture_image(image);
  61    struct gl_texture_object *texobj = image->TexObject;
  62    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
  63    GLuint slices;
  64
  65    assert(image->Border == 0);
  66
  67    /* Quantize sample count */
  68    if (image->NumSamples) {
  69       image->NumSamples = intel_quantize_num_samples(intel->intelScreen, image->NumSamples);
  70       if (!image->NumSamples)
  71          return false;
  72    }
  73
  74    /* Because the driver uses AllocTextureImageBuffer() internally, it may end
  75     * up mismatched with FreeTextureImageBuffer(), but that is safe to call
  76     * multiple times.
  77     */
  78    ctx->Driver.FreeTextureImageBuffer(ctx, image);
  79
  80    /* Allocate the swrast_texture_image::ImageOffsets array now */
  81    switch (texobj->Target) {
  82    case GL_TEXTURE_3D:
  83    case GL_TEXTURE_2D_ARRAY:
  84    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
  85       slices = image->Depth;
  86       break;
  87    case GL_TEXTURE_1D_ARRAY:
  88       slices = image->Height;
  89       break;
  90    default:
  91       slices = 1;
  92    }
  93    assert(!intel_image->base.ImageOffsets);
  94    intel_image->base.ImageOffsets = malloc(slices * sizeof(GLuint));
  95
  96    _swrast_init_texture_image(image);
  97
  98    if (intel_texobj->mt &&
  99        intel_miptree_match_image(intel_texobj->mt, image)) {
 100       intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
 101       DBG("%s: alloc obj %p level %d %dx%dx%d using object's miptree %p\n",
 102           __FUNCTION__, texobj, image->Level,
 103           image->Width, image->Height, image->Depth, intel_texobj->mt);
 104    } else {
 105       intel_image->mt = intel_miptree_create_for_teximage(intel, intel_texobj,
 106                                                           intel_image,
 107                                                           false);
 108
 109       /* Even if the object currently has a mipmap tree associated
 110        * with it, this one is a more likely candidate to represent the
 111        * whole object since our level didn't fit what was there
 112        * before, and any lower levels would fit into our miptree.
 113        */
 114       intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
 115
 116       DBG("%s: alloc obj %p level %d %dx%dx%d using new miptree %p\n",
 117           __FUNCTION__, texobj, image->Level,
 118           image->Width, image->Height, image->Depth, intel_image->mt);
 119    }
 120
 121    intel_texobj->needs_validate = true;
 122
 123    return true;
 124 }
 125
 126 /**
 127  * Called via ctx->Driver.AllocTextureStorage()
 128  * Just have to allocate memory for the texture images.
 129  */
 130 static GLboolean
 131 intel_alloc_texture_storage(struct gl_context *ctx,
 132                             struct gl_texture_object *texObj,
 133                             GLsizei levels, GLsizei width,
 134                             GLsizei height, GLsizei depth)
 135 {
 136    const int numFaces = _mesa_num_tex_faces(texObj->Target);
 137    int face;
 138    int level;
 139
 140    for (face = 0; face < numFaces; face++) {
 141       for (level = 0; level < levels; level++) {
 142          struct gl_texture_image *const texImage = texObj->Image[face][level];
 143          if (!intel_alloc_texture_image_buffer(ctx, texImage))
 144             return false;
 145       }
 146    }
 147
 148    return true;
 149 }
 150
 151 static void
 152 intel_free_texture_image_buffer(struct gl_context * ctx,
 153                                 struct gl_texture_image *texImage)
 154 {
 155    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 156
 157    DBG("%s\n", __FUNCTION__);
 158
 159    intel_miptree_release(&intelImage->mt);
 160
 161    if (intelImage->base.Buffer) {
 162       _mesa_align_free(intelImage->base.Buffer);
 163       intelImage->base.Buffer = NULL;
 164    }
 165
 166    free(intelImage->base.ImageOffsets);
 167    intelImage->base.ImageOffsets = NULL;
 168 }
 169
 170 /**
 171  * Map texture memory/buffer into user space.
 172  * Note: the region of interest parameters are ignored here.
 173  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 174  * \param mapOut  returns start of mapping of region of interest
 175  * \param rowStrideOut  returns row stride in bytes
 176  */
 177 static void
 178 intel_map_texture_image(struct gl_context *ctx,
 179                         struct gl_texture_image *tex_image,
 180                         GLuint slice,
 181                         GLuint x, GLuint y, GLuint w, GLuint h,
 182                         GLbitfield mode,
 183                         GLubyte **map,
 184                         GLint *stride)
 185 {
 186    struct intel_context *intel = intel_context(ctx);
 187    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
 188    struct intel_mipmap_tree *mt = intel_image->mt;
 189
 190    /* Our texture data is always stored in a miptree. */
 191    assert(mt);
 192
 193    /* Check that our caller wasn't confused about how to map a 1D texture. */
 194    assert(tex_image->TexObject->Target != GL_TEXTURE_1D_ARRAY ||
 195           h == 1);
 196
 197    /* intel_miptree_map operates on a unified "slice" number that references the
 198     * cube face, since it's all just slices to the miptree code.
 199     */
 200    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
 201       slice = tex_image->Face;
 202
 203    intel_miptree_map(intel, mt, tex_image->Level, slice, x, y, w, h, mode,
 204                      (void **)map, stride);
 205 }
 206
 207 static void
 208 intel_unmap_texture_image(struct gl_context *ctx,
 209                           struct gl_texture_image *tex_image, GLuint slice)
 210 {
 211    struct intel_context *intel = intel_context(ctx);
 212    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
 213    struct intel_mipmap_tree *mt = intel_image->mt;
 214
 215    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
 216       slice = tex_image->Face;
 217
 218    intel_miptree_unmap(intel, mt, tex_image->Level, slice);
 219 }
 220
 221 void
 222 intelInitTextureFuncs(struct dd_function_table *functions)
 223 {
 224    functions->NewTextureObject = intelNewTextureObject;
 225    functions->NewTextureImage = intelNewTextureImage;
 226    functions->DeleteTextureImage = intelDeleteTextureImage;
 227    functions->DeleteTexture = intelDeleteTextureObject;
 228    functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
 229    functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
 230    functions->AllocTextureStorage = intel_alloc_texture_storage;
 231    functions->MapTextureImage = intel_map_texture_image;
 232    functions->UnmapTextureImage = intel_unmap_texture_image;
 233 }