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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 "brw_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 brw_context *brw = brw_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.    /* Quantize sample count */
  71.    if (image->NumSamples) {
  72.       image->NumSamples = intel_quantize_num_samples(brw->intelScreen, image->NumSamples);
  73.       if (!image->NumSamples)
  74.          return false;
  75.    }
  76.  
  77.    /* Because the driver uses AllocTextureImageBuffer() internally, it may end
  78.     * up mismatched with FreeTextureImageBuffer(), but that is safe to call
  79.     * multiple times.
  80.     */
  81.    ctx->Driver.FreeTextureImageBuffer(ctx, image);
  82.  
  83.    if (!_swrast_init_texture_image(image))
  84.       return false;
  85.  
  86.    if (intel_texobj->mt &&
  87.        intel_miptree_match_image(intel_texobj->mt, image)) {
  88.       intel_miptree_reference(&intel_image->mt, intel_texobj->mt);
  89.       DBG("%s: alloc obj %p level %d %dx%dx%d using object's miptree %p\n",
  90.           __FUNCTION__, texobj, image->Level,
  91.           image->Width, image->Height, image->Depth, intel_texobj->mt);
  92.    } else {
  93.       intel_image->mt = intel_miptree_create_for_teximage(brw, intel_texobj,
  94.                                                           intel_image,
  95.                                                           false);
  96.  
  97.       /* Even if the object currently has a mipmap tree associated
  98.        * with it, this one is a more likely candidate to represent the
  99.        * whole object since our level didn't fit what was there
  100.        * before, and any lower levels would fit into our miptree.
  101.        */
  102.       intel_miptree_reference(&intel_texobj->mt, intel_image->mt);
  103.  
  104.       DBG("%s: alloc obj %p level %d %dx%dx%d using new miptree %p\n",
  105.           __FUNCTION__, texobj, image->Level,
  106.           image->Width, image->Height, image->Depth, intel_image->mt);
  107.    }
  108.  
  109.    intel_texobj->needs_validate = true;
  110.  
  111.    return true;
  112. }
  113.  
  114. static void
  115. intel_free_texture_image_buffer(struct gl_context * ctx,
  116.                                 struct gl_texture_image *texImage)
  117. {
  118.    struct intel_texture_image *intelImage = intel_texture_image(texImage);
  119.  
  120.    DBG("%s\n", __FUNCTION__);
  121.  
  122.    intel_miptree_release(&intelImage->mt);
  123.  
  124.    _swrast_free_texture_image_buffer(ctx, texImage);
  125. }
  126.  
  127. /**
  128.  * Map texture memory/buffer into user space.
  129.  * Note: the region of interest parameters are ignored here.
  130.  * \param mode  bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
  131.  * \param mapOut  returns start of mapping of region of interest
  132.  * \param rowStrideOut  returns row stride in bytes
  133.  */
  134. static void
  135. intel_map_texture_image(struct gl_context *ctx,
  136.                         struct gl_texture_image *tex_image,
  137.                         GLuint slice,
  138.                         GLuint x, GLuint y, GLuint w, GLuint h,
  139.                         GLbitfield mode,
  140.                         GLubyte **map,
  141.                         GLint *stride)
  142. {
  143.    struct brw_context *brw = brw_context(ctx);
  144.    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
  145.    struct intel_mipmap_tree *mt = intel_image->mt;
  146.  
  147.    /* Our texture data is always stored in a miptree. */
  148.    assert(mt);
  149.  
  150.    /* Check that our caller wasn't confused about how to map a 1D texture. */
  151.    assert(tex_image->TexObject->Target != GL_TEXTURE_1D_ARRAY ||
  152.           h == 1);
  153.  
  154.    /* intel_miptree_map operates on a unified "slice" number that references the
  155.     * cube face, since it's all just slices to the miptree code.
  156.     */
  157.    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
  158.       slice = tex_image->Face;
  159.  
  160.    intel_miptree_map(brw, mt, tex_image->Level, slice, x, y, w, h, mode,
  161.                      (void **)map, stride);
  162. }
  163.  
  164. static void
  165. intel_unmap_texture_image(struct gl_context *ctx,
  166.                           struct gl_texture_image *tex_image, GLuint slice)
  167. {
  168.    struct brw_context *brw = brw_context(ctx);
  169.    struct intel_texture_image *intel_image = intel_texture_image(tex_image);
  170.    struct intel_mipmap_tree *mt = intel_image->mt;
  171.  
  172.    if (tex_image->TexObject->Target == GL_TEXTURE_CUBE_MAP)
  173.       slice = tex_image->Face;
  174.  
  175.    intel_miptree_unmap(brw, mt, tex_image->Level, slice);
  176. }
  177.  
  178. void
  179. intelInitTextureFuncs(struct dd_function_table *functions)
  180. {
  181.    functions->NewTextureObject = intelNewTextureObject;
  182.    functions->NewTextureImage = intelNewTextureImage;
  183.    functions->DeleteTextureImage = intelDeleteTextureImage;
  184.    functions->DeleteTexture = intelDeleteTextureObject;
  185.    functions->AllocTextureImageBuffer = intel_alloc_texture_image_buffer;
  186.    functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
  187.    functions->MapTextureImage = intel_map_texture_image;
  188.    functions->UnmapTextureImage = intel_unmap_texture_image;
  189. }
  190.