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
  39    if (obj == NULL)
  40       return NULL;
  41
  42    _mesa_initialize_texture_object(&obj->base, name, target);
  43
  44    obj->needs_validate = true;
  45
  46    return &obj->base;
  47 }
  48
  49 static void
  50 intelDeleteTextureObject(struct gl_context *ctx,
  51                          struct gl_texture_object *texObj)
  52 {
  53    struct intel_texture_object *intelObj = intel_texture_object(texObj);
  54
  55    intel_miptree_release(&intelObj->mt);
  56    _mesa_delete_texture_object(ctx, texObj);
  57 }
  58
  59 static GLboolean
  60 intel_alloc_texture_image_buffer(struct gl_context *ctx,
  61                                  struct gl_texture_image *image)
  62 {
  63    struct intel_context *intel = intel_context(ctx);
  64    struct intel_texture_image *intel_image = intel_texture_image(image);
  65    struct gl_texture_object *texobj = image->TexObject;
  66    struct intel_texture_object *intel_texobj = intel_texture_object(texobj);
  67    GLuint slices;
  68
  69    assert(image->Border == 0);
  70
  71    /* Quantize sample count */
  72    if (image->NumSamples) {
  73       image->NumSamples = intel_quantize_num_samples(intel->intelScreen, image->NumSamples);
  74       if (!image->NumSamples)
  75          return false;
  76    }
  77
  78    /* Because the driver uses AllocTextureImageBuffer() internally, it may end
  79     * up mismatched with FreeTextureImageBuffer(), but that is safe to call
  80     * multiple times.
  81     */
  82    ctx->Driver.FreeTextureImageBuffer(ctx, image);
  83
  84    /* Allocate the swrast_texture_image::ImageOffsets array now */
  85    switch (texobj->Target) {
  86    case GL_TEXTURE_3D:
  87    case GL_TEXTURE_2D_ARRAY:
  88    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
  89       slices = image->Depth;
  90       break;
  91    case GL_TEXTURE_1D_ARRAY:
  92       slices = image->Height;
  93       break;
  94    default:
  95       slices = 1;
  96    }
  97    assert(!intel_image->base.ImageOffsets);
  98    intel_image->base.ImageOffsets = malloc(slices * sizeof(GLuint));
  99
 100    _swrast_init_texture_image(image);
 101
 102    if (intel_texobj->mt &&
 103        intel_miptree_match_image(intel_texobj->mt, image)) {
 104       intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
 105       DBG("%s: alloc obj %p level %d %dx%dx%d using object's miptree %p\n",
 106           __FUNCTION__, texobj, image->Level,
 107           image->Width, image->Height, image->Depth, intel_texobj->mt);
 108    } else {
 109       intel_image->mt = intel_miptree_create_for_teximage(intel, intel_texobj,
 110                                                           intel_image,
 111                                                           false);
 112
 113       /* Even if the object currently has a mipmap tree associated
 114        * with it, this one is a more likely candidate to represent the
 115        * whole object since our level didn't fit what was there
 116        * before, and any lower levels would fit into our miptree.
 117        */
 118       intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
 119
 120       DBG("%s: alloc obj %p level %d %dx%dx%d using new miptree %p\n",
 121           __FUNCTION__, texobj, image->Level,
 122           image->Width, image->Height, image->Depth, intel_image->mt);
 123    }
 124
 125    intel_texobj->needs_validate = true;
 126
 127    return true;
 128 }
 129
 130 /**
 131  * Called via ctx->Driver.AllocTextureStorage()
 132  * Just have to allocate memory for the texture images.
 133  */
 134 static GLboolean
 135 intel_alloc_texture_storage(struct gl_context *ctx,
 136                             struct gl_texture_object *texObj,
 137                             GLsizei levels, GLsizei width,
 138                             GLsizei height, GLsizei depth)
 139 {
 140    const int numFaces = _mesa_num_tex_faces(texObj->Target);
 141    int face;
 142    int level;
 143
 144    for (face = 0; face < numFaces; face++) {
 145       for (level = 0; level < levels; level++) {
 146          struct gl_texture_image *const texImage = texObj->Image[face][level];
 147          if (!intel_alloc_texture_image_buffer(ctx, texImage))
 148             return false;
 149       }
 150    }
 151
 152    return true;
 153 }
 154
 155 static void
 156 intel_free_texture_image_buffer(struct gl_context * ctx,
 157                                 struct gl_texture_image *texImage)
 158 {
 159    struct intel_texture_image *intelImage = intel_texture_image(texImage);
 160
 161    DBG("%s\n", __FUNCTION__);
 162
 163    intel_miptree_release(&intelImage->mt);
 164
 165    if (intelImage->base.Buffer) {
 166       _mesa_align_free(intelImage->base.Buffer);
 167       intelImage->base.Buffer = NULL;
 168    }
 169
 170    free(intelImage->base.ImageOffsets);
 171    intelImage->base.ImageOffsets = NULL;
 172 }
 173
 174 /**
 175  * Map texture memory/buffer into user space.
 176  * Note: the region of interest parameters are ignored here.
 177  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
 178  * \param mapOut  returns start of mapping of region of interest
 179  * \param rowStrideOut  returns row stride in bytes
 180  */
 181 static void
 182 intel_map_texture_image(struct gl_context *ctx,
 183                         struct gl_texture_image *tex_image,
 184                         GLuint slice,
 185                         GLuint x, GLuint y, GLuint w, GLuint h,
 186                         GLbitfield mode,
 187                         GLubyte **map,
 188                         GLint *stride)
 189 {
 190    struct intel_context *intel = intel_context(ctx);
 191    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
 192    struct intel_mipmap_tree *mt = intel_image->mt;
 193
 194    /* Our texture data is always stored in a miptree. */
 195    assert(mt);
 196
 197    /* Check that our caller wasn't confused about how to map a 1D texture. */
 198    assert(tex_image->TexObject->Target != GL_TEXTURE_1D_ARRAY ||
 199           h == 1);
 200
 201    /* intel_miptree_map operates on a unified "slice" number that references the
 202     * cube face, since it's all just slices to the miptree code.
 203     */
 204    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
 205       slice = tex_image->Face;
 206
 207    intel_miptree_map(intel, mt, tex_image->Level, slice, x, y, w, h, mode,
 208                      (void **)map, stride);
 209 }
 210
 211 static void
 212 intel_unmap_texture_image(struct gl_context *ctx,
 213                           struct gl_texture_image *tex_image, GLuint slice)
 214 {
 215    struct intel_context *intel = intel_context(ctx);
 216    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
 217    struct intel_mipmap_tree *mt = intel_image->mt;
 218
 219    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
 220       slice = tex_image->Face;
 221
 222    intel_miptree_unmap(intel, mt, tex_image->Level, slice);
 223 }
 224
 225 void
 226 intelInitTextureFuncs(struct dd_function_table *functions)
 227 {
 228    functions->NewTextureObject = intelNewTextureObject;
 229    functions->NewTextureImage = intelNewTextureImage;
 230    functions->DeleteTextureImage = intelDeleteTextureImage;
 231    functions->DeleteTexture = intelDeleteTextureObject;
 232    functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
 233    functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
 234    functions->AllocTextureStorage = intel_alloc_texture_storage;
 235    functions->MapTextureImage = intel_map_texture_image;
 236    functions->UnmapTextureImage = intel_unmap_texture_image;
 237 }