/**
* Map a teximage in a mipmap tree.
* \param row_stride returns row stride in bytes
* \param image_stride returns image stride in bytes (for 3D textures).
* \param image_offsets pointer to array of pixel offsets from the returned
* pointer to each depth image
* \return address of mapping
*/
GLubyte *
intel_miptree_image_map(struct intel_context * intel,
struct intel_mipmap_tree * mt,
GLuint face,
GLuint level,
GLuint * row_stride, GLuint * image_offsets)
{
GLuint x, y;
DBG("%s \n", __FUNCTION__);
if (row_stride)
*row_stride = mt->region->pitch * mt->cpp;
if (mt->target == GL_TEXTURE_3D) {
int i;
for (i = 0; i < mt->level[level].depth; i++) {
intel_miptree_get_image_offset(mt, level, face, i,
&x, &y);
image_offsets[i] = x + y * mt->region->pitch;
}
return intel_region_map(intel, mt->region);
} else {
assert(mt->level[level].depth == 1);
intel_miptree_get_image_offset(mt, level, face, 0,
&x, &y);
image_offsets[0] = 0;
return intel_region_map(intel, mt->region) +
(x + y * mt->region->pitch) * mt->cpp;
}
}
/**
* Prepare for softare rendering. Map current read/draw framebuffers'
* renderbuffes and all currently bound texture objects.
*
* Old note: Moved locking out to get reasonable span performance.
*/
void
intelSpanRenderStart(GLcontext * ctx)
{
struct intel_context *intel = intel_context(ctx);
GLuint i;
intelFinish(&intel->ctx);
LOCK_HARDWARE(intel);
#if 0
/* Just map the framebuffer and all textures. Bufmgr code will
* take care of waiting on the necessary fences:
*/
intel_region_map(intel->intelScreen, intel->front_region);
intel_region_map(intel->intelScreen, intel->back_region);
intel_region_map(intel->intelScreen, intel->intelScreen->depth_region);
#endif
for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) {
if (ctx->Texture.Unit[i]._ReallyEnabled) {
struct gl_texture_object *texObj = ctx->Texture.Unit[i]._Current;
intel_tex_map_images(intel, intel_texture_object(texObj));
}
}
intel_map_unmap_buffers(intel, GL_TRUE);
}
/**
* \param mode bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
*/
static void
intel_tex_map_image_for_swrast(struct intel_context *intel,
struct intel_texture_image *intel_image,
GLbitfield mode)
{
int level;
int face;
struct intel_mipmap_tree *mt;
unsigned int x, y;
if (!intel_image || !intel_image->mt)
return;
level = intel_image->base.Base.Level;
face = intel_image->base.Base.Face;
mt = intel_image->mt;
for (int i = 0; i < mt->level[level].depth; i++)
intel_miptree_slice_resolve_depth(intel, mt, level, i);
if (mt->target == GL_TEXTURE_3D ||
mt->target == GL_TEXTURE_2D_ARRAY ||
mt->target == GL_TEXTURE_1D_ARRAY) {
int i;
/* ImageOffsets[] is only used for swrast's fetch_texel_3d, so we can't
* share code with the normal path.
*/
for (i = 0; i < mt->level[level].depth; i++) {
intel_miptree_get_image_offset(mt, level, i, &x, &y);
intel_image->base.ImageOffsets[i] = x + y * (mt->region->pitch /
mt->region->cpp);
}
DBG("%s \n", __FUNCTION__);
intel_image->base.Map = intel_region_map(intel, mt->region, mode);
} else {
assert(intel_image->base.Base.Depth == 1);
intel_miptree_get_image_offset(mt, level, face, &x, &y);
DBG("%s: (%d,%d) -> (%d, %d)/%d\n",
__FUNCTION__, face, level, x, y, mt->region->pitch);
intel_image->base.Map = intel_region_map(intel, mt->region, mode) +
x * mt->cpp + y * mt->region->pitch;
}
assert(mt->region->pitch % mt->region->cpp == 0);
intel_image->base.RowStride = mt->region->pitch / mt->region->cpp;
}
/**
* Copy mipmap image between trees
*/
void
intel_miptree_image_copy(struct intel_context *intel,
struct intel_mipmap_tree *dst,
GLuint face, GLuint level,
struct intel_mipmap_tree *src)
{
GLuint width = src->level[level].width;
GLuint height = src->level[level].height;
GLuint depth = src->level[level].depth;
GLuint src_x, src_y, dst_x, dst_y;
GLuint i;
GLboolean success;
if (dst->compressed) {
GLuint align_w, align_h;
intel_get_texture_alignment_unit(dst->internal_format,
&align_w, &align_h);
height = (height + 3) / 4;
width = ALIGN(width, align_w);
}
intel_prepare_render(intel);
for (i = 0; i < depth; i++) {
intel_miptree_get_image_offset(src, level, face, i, &src_x, &src_y);
intel_miptree_get_image_offset(dst, level, face, i, &dst_x, &dst_y);
success = intel_region_copy(intel,
dst->region, 0, dst_x, dst_y,
src->region, 0, src_x, src_y,
width, height, GL_FALSE,
GL_COPY);
if (!success) {
GLubyte *src_ptr, *dst_ptr;
src_ptr = intel_region_map(intel, src->region);
dst_ptr = intel_region_map(intel, dst->region);
_mesa_copy_rect(dst_ptr,
dst->cpp,
dst->region->pitch,
dst_x, dst_y, width, height,
src_ptr,
src->region->pitch,
src_x, src_y);
intel_region_unmap(intel, src->region);
intel_region_unmap(intel, dst->region);
}
}
}
/**
* Map a teximage in a mipmap tree.
* \param row_stride returns row stride in bytes
* \param image_stride returns image stride in bytes (for 3D textures).
* \param image_offsets pointer to array of pixel offsets from the returned
* pointer to each depth image
* \return address of mapping
*/
GLubyte *
intel_miptree_image_map(struct intel_context * intel,
struct intel_mipmap_tree * mt,
GLuint face,
GLuint level,
GLuint * row_stride, GLuint * image_offsets)
{
DBG("%s \n", __FUNCTION__);
if (row_stride)
*row_stride = mt->pitch * mt->cpp;
if (mt->target == GL_TEXTURE_3D) {
int i;
for (i = 0; i < mt->level[level].depth; i++)
image_offsets[i] = mt->level[level].image_offset[i] / mt->cpp;
} else {
assert(mt->level[level].depth == 1);
assert(mt->target == GL_TEXTURE_CUBE_MAP ||
mt->level[level].image_offset[0] == 0);
image_offsets[0] = 0;
}
return (intel_region_map(intel, mt->region) +
intel_miptree_image_offset(mt, face, level));
}
/* Upload data to a rectangular sub-region. Lots of choices how to do this:
*
* - memcpy by span to current destination
* - upload data as new buffer and blit
*
* Currently always memcpy.
*/
void
intel_region_data(struct intel_context *intel,
struct intel_region *dst,
GLuint dst_offset,
GLuint dstx, GLuint dsty,
const void *src, GLuint src_pitch,
GLuint srcx, GLuint srcy, GLuint width, GLuint height)
{
_DBG("%s\n", __FUNCTION__);
if (intel == NULL)
return;
if (dst->pbo) {
if (dstx == 0 &&
dsty == 0 && width == dst->pitch && height == dst->height)
intel_region_release_pbo(intel, dst);
else
intel_region_cow(intel, dst);
}
LOCK_HARDWARE(intel);
_mesa_copy_rect(intel_region_map(intel, dst) + dst_offset,
dst->cpp,
dst->pitch,
dstx, dsty, width, height, src, src_pitch, srcx, srcy);
intel_region_unmap(intel, dst);
UNLOCK_HARDWARE(intel);
}
static void
map_regions(GLcontext * ctx,
struct intel_renderbuffer *depthRb,
struct intel_renderbuffer *stencilRb)
{
struct intel_context *intel = intel_context(ctx);
if (depthRb && depthRb->region) {
intel_region_map(intel->intelScreen, depthRb->region);
depthRb->pfMap = depthRb->region->map;
depthRb->pfPitch = depthRb->region->pitch;
}
if (stencilRb && stencilRb->region) {
intel_region_map(intel->intelScreen, stencilRb->region);
stencilRb->pfMap = stencilRb->region->map;
stencilRb->pfPitch = stencilRb->region->pitch;
}
}
/**
* Map a teximage in a mipmap tree.
* \param row_stride returns row stride in bytes
* \param image_stride returns image stride in bytes (for 3D textures).
* \return address of mapping
*/
GLubyte *
intel_miptree_image_map(struct intel_context * intel,
struct intel_mipmap_tree * mt,
GLuint face,
GLuint level,
GLuint * row_stride, GLuint * image_offsets)
{
DBG("%s \n", __FUNCTION__);
if (row_stride)
*row_stride = mt->pitch * mt->cpp;
if (image_offsets)
memcpy(image_offsets, mt->level[level].image_offset,
mt->level[level].depth * sizeof(GLuint));
return (intel_region_map(intel->intelScreen, mt->region) +
intel_miptree_image_offset(mt, face, level));
}
/**
* Map or unmap all the renderbuffers which we may need during
* software rendering.
* XXX in the future, we could probably convey extra information to
* reduce the number of mappings needed. I.e. if doing a glReadPixels
* from the depth buffer, we really only need one mapping.
*
* XXX Rewrite this function someday.
* We can probably just loop over all the renderbuffer attachments,
* map/unmap all of them, and not worry about the _ColorDrawBuffers
* _ColorReadBuffer, _DepthBuffer or _StencilBuffer fields.
*/
static void
intel_map_unmap_buffers(struct intel_context *intel, GLboolean map)
{
GLcontext *ctx = &intel->ctx;
GLuint i, j;
struct intel_renderbuffer *irb;
/* color draw buffers */
for (i = 0; i < ctx->Const.MaxDrawBuffers; i++) {
for (j = 0; j < ctx->DrawBuffer->_NumColorDrawBuffers[i]; j++) {
struct gl_renderbuffer *rb =
ctx->DrawBuffer->_ColorDrawBuffers[i][j];
irb = intel_renderbuffer(rb);
if (irb) {
/* this is a user-created intel_renderbuffer */
if (irb->region) {
if (map)
intel_region_map(intel->intelScreen, irb->region);
else
intel_region_unmap(intel->intelScreen, irb->region);
}
irb->pfMap = irb->region->map;
irb->pfPitch = irb->region->pitch;
}
}
}
/* check for render to textures */
for (i = 0; i < BUFFER_COUNT; i++) {
struct gl_renderbuffer_attachment *att =
ctx->DrawBuffer->Attachment + i;
struct gl_texture_object *tex = att->Texture;
if (tex) {
/* render to texture */
ASSERT(att->Renderbuffer);
if (map) {
struct gl_texture_image *texImg;
texImg = tex->Image[att->CubeMapFace][att->TextureLevel];
intel_tex_map_images(intel, intel_texture_object(tex));
}
else {
intel_tex_unmap_images(intel, intel_texture_object(tex));
}
}
}
/* color read buffers */
irb = intel_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
if (irb && irb->region) {
if (map)
intel_region_map(intel->intelScreen, irb->region);
else
intel_region_unmap(intel->intelScreen, irb->region);
irb->pfMap = irb->region->map;
irb->pfPitch = irb->region->pitch;
}
/* Account for front/back color page flipping.
* The span routines use the pfMap and pfPitch fields which will
* swap the front/back region map/pitch if we're page flipped.
* Do this after mapping, above, so the map field is valid.
*/
#if 0
if (map && ctx->DrawBuffer->Name == 0) {
struct intel_renderbuffer *irbFront
= intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_FRONT_LEFT);
struct intel_renderbuffer *irbBack
= intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_BACK_LEFT);
if (irbBack) {
/* double buffered */
if (intel->sarea->pf_current_page == 0) {
irbFront->pfMap = irbFront->region->map;
irbFront->pfPitch = irbFront->region->pitch;
irbBack->pfMap = irbBack->region->map;
irbBack->pfPitch = irbBack->region->pitch;
}
else {
irbFront->pfMap = irbBack->region->map;
irbFront->pfPitch = irbBack->region->pitch;
irbBack->pfMap = irbFront->region->map;
irbBack->pfPitch = irbFront->region->pitch;
}
}
}
#endif
/* depth buffer (Note wrapper!) */
if (ctx->DrawBuffer->_DepthBuffer) {
irb = intel_renderbuffer(ctx->DrawBuffer->_DepthBuffer->Wrapped);
if (irb && irb->region && irb->Base.Name != 0) {
if (map) {
intel_region_map(intel->intelScreen, irb->region);
irb->pfMap = irb->region->map;
irb->pfPitch = irb->region->pitch;
}
else {
intel_region_unmap(intel->intelScreen, irb->region);
irb->pfMap = NULL;
irb->pfPitch = 0;
}
}
}
/* stencil buffer (Note wrapper!) */
if (ctx->DrawBuffer->_StencilBuffer) {
irb = intel_renderbuffer(ctx->DrawBuffer->_StencilBuffer->Wrapped);
if (irb && irb->region && irb->Base.Name != 0) {
if (map) {
intel_region_map(intel->intelScreen, irb->region);
irb->pfMap = irb->region->map;
irb->pfPitch = irb->region->pitch;
}
else {
intel_region_unmap(intel->intelScreen, irb->region);
irb->pfMap = NULL;
irb->pfPitch = 0;
}
}
}
}