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  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(ctx, &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.  
  68.    assert(image->Border == 0);
  69.  
  70.    /* Because the driver uses AllocTextureImageBuffer() internally, it may end
  71.     * up mismatched with FreeTextureImageBuffer(), but that is safe to call
  72.     * multiple times.
  73.     */
  74.    ctx->Driver.FreeTextureImageBuffer(ctx, image);
  75.  
  76.    if (!_swrast_init_texture_image(image))
  77.       return false;
  78.  
  79.    if (intel_texobj->mt &&
  80.        intel_miptree_match_image(intel_texobj->mt, image)) {
  81.       intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
  82.       DBG("%s: alloc obj %p level %d %dx%dx%d using object's miptree %p\n",
  83.           __FUNCTION__, texobj, image->Level,
  84.           image->Width, image->Height, image->Depth, intel_texobj->mt);
  85.    } else {
  86.       intel_image->mt = intel_miptree_create_for_teximage(intel, intel_texobj,
  87.                                                           intel_image,
  88.                                                           false);
  89.  
  90.       /* Even if the object currently has a mipmap tree associated
  91.        * with it, this one is a more likely candidate to represent the
  92.        * whole object since our level didn't fit what was there
  93.        * before, and any lower levels would fit into our miptree.
  94.        */
  95.       intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
  96.  
  97.       DBG("%s: alloc obj %p level %d %dx%dx%d using new miptree %p\n",
  98.           __FUNCTION__, texobj, image->Level,
  99.           image->Width, image->Height, image->Depth, intel_image->mt);
  100.    }
  101.  
  102.    intel_texobj->needs_validate = true;
  103.  
  104.    return true;
  105. }
  106.  
  107. static void
  108. intel_free_texture_image_buffer(struct gl_context * ctx,
  109.                                 struct gl_texture_image *texImage)
  110. {
  111.    struct intel_texture_image *intelImage = intel_texture_image(texImage);
  112.  
  113.    DBG("%s\n", __FUNCTION__);
  114.  
  115.    intel_miptree_release(&intelImage->mt);
  116.  
  117.    _swrast_free_texture_image_buffer(ctx, texImage);
  118. }
  119.  
  120. /**
  121.  * Map texture memory/buffer into user space.
  122.  * Note: the region of interest parameters are ignored here.
  123.  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
  124.  * \param mapOut  returns start of mapping of region of interest
  125.  * \param rowStrideOut  returns row stride in bytes
  126.  */
  127. static void
  128. intel_map_texture_image(struct gl_context *ctx,
  129.                         struct gl_texture_image *tex_image,
  130.                         GLuint slice,
  131.                         GLuint x, GLuint y, GLuint w, GLuint h,
  132.                         GLbitfield mode,
  133.                         GLubyte **map,
  134.                         GLint *stride)
  135. {
  136.    struct intel_context *intel = intel_context(ctx);
  137.    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
  138.    struct intel_mipmap_tree *mt = intel_image->mt;
  139.  
  140.    /* Our texture data is always stored in a miptree. */
  141.    assert(mt);
  142.  
  143.    /* Check that our caller wasn't confused about how to map a 1D texture. */
  144.    assert(tex_image->TexObject->Target != GL_TEXTURE_1D_ARRAY ||
  145.           h == 1);
  146.  
  147.    /* intel_miptree_map operates on a unified "slice" number that references the
  148.     * cube face, since it's all just slices to the miptree code.
  149.     */
  150.    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
  151.       slice = tex_image->Face;
  152.  
  153.    intel_miptree_map(intel, mt, tex_image->Level, slice, x, y, w, h, mode,
  154.                      (void **)map, stride);
  155. }
  156.  
  157. static void
  158. intel_unmap_texture_image(struct gl_context *ctx,
  159.                           struct gl_texture_image *tex_image, GLuint slice)
  160. {
  161.    struct intel_context *intel = intel_context(ctx);
  162.    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
  163.    struct intel_mipmap_tree *mt = intel_image->mt;
  164.  
  165.    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
  166.       slice = tex_image->Face;
  167.  
  168.    intel_miptree_unmap(intel, mt, tex_image->Level, slice);
  169. }
  170.  
  171. void
  172. intelInitTextureFuncs(struct dd_function_table *functions)
  173. {
  174.    functions->NewTextureObject = intelNewTextureObject;
  175.    functions->NewTextureImage = intelNewTextureImage;
  176.    functions->DeleteTextureImage = intelDeleteTextureImage;
  177.    functions->DeleteTexture = intelDeleteTextureObject;
  178.    functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
  179.    functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
  180.    functions->MapTextureImage = intel_map_texture_image;
  181.    functions->UnmapTextureImage = intel_unmap_texture_image;
  182. }
  183.