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#include "swrast/swrast.h"
#include "main/renderbuffer.h"
#include "main/texobj.h"
#include "main/teximage.h"
#include "main/mipmap.h"
#include "drivers/common/meta.h"
#include "intel_context.h"
#include "intel_mipmap_tree.h"
#include "intel_tex.h"
#define FILE_DEBUG_FLAG DEBUG_TEXTURE
static struct gl_texture_image *
intelNewTextureImage(struct gl_context * ctx)
{
DBG("%s\n", __FUNCTION__);
(void) ctx;
return (struct gl_texture_image *) CALLOC_STRUCT(intel_texture_image);
}
static void
intelDeleteTextureImage(struct gl_context * ctx, struct gl_texture_image *img)
{
/* nothing special (yet) for intel_texture_image */
_mesa_delete_texture_image(ctx, img);
}
static struct gl_texture_object *
intelNewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
{
struct intel_texture_object *obj = CALLOC_STRUCT(intel_texture_object);
(void) ctx;
DBG("%s\n", __FUNCTION__);
_mesa_initialize_texture_object(&obj->base, name, target);
return &obj->base;
}
static void
intelDeleteTextureObject(struct gl_context *ctx,
struct gl_texture_object *texObj)
{
struct intel_texture_object *intelObj = intel_texture_object(texObj);
intel_miptree_release(&intelObj->mt);
_mesa_delete_texture_object(ctx, texObj);
}
static void
intel_free_texture_image_buffer(struct gl_context * ctx,
struct gl_texture_image *texImage)
{
struct intel_texture_image *intelImage = intel_texture_image(texImage);
DBG("%s\n", __FUNCTION__);
intel_miptree_release(&intelImage->mt);
if (texImage->Data) {
_mesa_free_texmemory(texImage->Data);
texImage->Data = NULL;
}
_mesa_reference_renderbuffer(&intelImage->depth_rb, NULL);
_mesa_reference_renderbuffer(&intelImage->stencil_rb, NULL);
}
/**
* Map texture memory/buffer into user space.
* Note: the region of interest parameters are ignored here.
* \param mapOut returns start of mapping of region of interest
* \param rowStrideOut returns row stride in bytes
*/
static void
intel_map_texture_image(struct gl_context *ctx,
struct gl_texture_image *tex_image,
GLuint slice,
GLuint x, GLuint y, GLuint w, GLuint h,
GLbitfield mode,
GLubyte **map,
GLint *stride)
{
struct intel_context *intel = intel_context(ctx);
struct intel_texture_image *intel_image = intel_texture_image(tex_image);
struct intel_mipmap_tree *mt = intel_image->mt;
unsigned int bw, bh;
if (intel_image->stencil_rb) {
/*
* The texture has packed depth/stencil format, but uses separate
* stencil. The texture's embedded stencil buffer contains the real
* stencil data, so copy that into the miptree.
*/
intel_tex_image_s8z24_gather(intel, intel_image);
}
/* For compressed formats, the stride is the number of bytes per
* row of blocks. intel_miptree_get_image_offset() already does
* the divide.
*/
_mesa_get_format_block_size(tex_image->TexFormat, &bw, &bh);
assert(y % bh == 0);
y /= bh;
if (likely(mt)) {
void *base = intel_region_map(intel, mt->region);
unsigned int image_x, image_y;
intel_miptree_get_image_offset(mt, tex_image->Level, tex_image->Face,
slice, &image_x, &image_y);
x += image_x;
y += image_y;
*stride = mt->region->pitch * mt->cpp;
*map = base + y * *stride + x * mt->cpp;
} else {
/* texture data is in malloc'd memory */
GLuint width = tex_image->Width;
GLuint height = ALIGN(tex_image->Height, bh) / bh;
GLuint texelSize = _mesa_get_format_bytes(tex_image->TexFormat);
assert(map);
*stride = _mesa_format_row_stride(tex_image->TexFormat, width);
*map = tex_image->Data + (slice * height + y) * *stride + x * texelSize;
return;
}
}
static void
intel_unmap_texture_image(struct gl_context *ctx,
struct gl_texture_image *tex_image, GLuint slice)
{
struct intel_context *intel = intel_context(ctx);
struct intel_texture_image *intel_image = intel_texture_image(tex_image);
if (intel_image->mt)
intel_region_unmap(intel, intel_image->mt->region);
if (intel_image->stencil_rb) {
/*
* The texture has packed depth/stencil format, but uses separate
* stencil. The texture's embedded stencil buffer contains the real
* stencil data, so copy that into the miptree.
*/
intel_tex_image_s8z24_scatter(intel, intel_image);
}
}
/**
* Called via ctx->Driver.GenerateMipmap()
* This is basically a wrapper for _mesa_meta_GenerateMipmap() which checks
* if we'll be using software mipmap generation. In that case, we need to
* map/unmap the base level texture image.
*/
static void
intelGenerateMipmap(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj)
{
if (_mesa_meta_check_generate_mipmap_fallback(ctx, target, texObj)) {
/* sw path: need to map texture images */
struct intel_context *intel = intel_context(ctx);
struct intel_texture_object *intelObj = intel_texture_object(texObj);
struct gl_texture_image *first_image = texObj->Image[0][texObj->BaseLevel];
fallback_debug("%s - fallback to swrast\n", __FUNCTION__);
if (_mesa_is_format_compressed(first_image->TexFormat)) {
_mesa_generate_mipmap(ctx, target, texObj);
} else {
intel_tex_map_level_images(intel, intelObj, texObj->BaseLevel);
_mesa_generate_mipmap(ctx, target, texObj);
intel_tex_unmap_level_images(intel, intelObj, texObj->BaseLevel);
}
if (!_mesa_is_format_compressed(first_image->TexFormat)) {
GLuint nr_faces = (texObj->Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
GLuint face, i;
for (face = 0; face < nr_faces; face++) {
for (i = texObj->BaseLevel + 1; i < texObj->MaxLevel; i++) {
struct intel_texture_image *intelImage =
intel_texture_image(texObj->Image[face][i]);
if (!intelImage)
break;
/* Unreference the miptree to signal that the new Data is a
* bare pointer from mesa.
*/
intel_miptree_release(&intelImage->mt);
}
}
}
}
else {
_mesa_meta_GenerateMipmap(ctx, target, texObj);
}
}
void
intelInitTextureFuncs(struct dd_function_table *functions)
{
functions->GenerateMipmap = intelGenerateMipmap;
functions->NewTextureObject = intelNewTextureObject;
functions->NewTextureImage = intelNewTextureImage;
functions->DeleteTextureImage = intelDeleteTextureImage;
functions->DeleteTexture = intelDeleteTextureObject;
functions->FreeTextureImageBuffer = intel_free_texture_image_buffer;
functions->MapTextureImage = intel_map_texture_image;
functions->UnmapTextureImage = intel_unmap_texture_image;
}
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