void
_mesa_update_fetch_functions(struct gl_context *ctx, GLuint unit)
{
struct gl_texture_object *texObj = ctx->Texture.Unit[unit]._Current;
struct gl_sampler_object *samp;
GLuint face, i;
GLuint dims;
if (!texObj)
return;
samp = _mesa_get_samplerobj(ctx, unit);
dims = _mesa_get_texture_dimensions(texObj->Target);
for (face = 0; face < 6; face++) {
for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
if (texObj->Image[face][i]) {
set_fetch_functions(samp,
swrast_texture_image(texObj->Image[face][i]),
dims);
}
}
}
}
/**
* Update the renderbuffer wrapper for rendering to a texture.
* For example, update the width, height of the RB based on the texture size,
* update the internal format info, etc.
*/
static void
update_wrapper(struct gl_context *ctx, struct gl_renderbuffer_attachment *att)
{
struct gl_renderbuffer *rb = att->Renderbuffer;
struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
struct swrast_texture_image *swImage;
gl_format format;
GLuint zOffset;
(void) ctx;
swImage = swrast_texture_image(rb->TexImage);
assert(swImage);
format = swImage->Base.TexFormat;
if (att->Texture->Target == GL_TEXTURE_1D_ARRAY_EXT) {
zOffset = 0;
}
else {
zOffset = att->Zoffset;
}
/* Want to store linear values, not sRGB */
rb->Format = _mesa_get_srgb_format_linear(format);
srb->Buffer = swImage->ImageSlices[zOffset];
}
/**
* Called via ctx->Driver.FreeTextureImageBuffer()
*/
void
_swrast_free_texture_image_buffer(struct gl_context *ctx,
struct gl_texture_image *texImage)
{
struct swrast_texture_image *swImage = swrast_texture_image(texImage);
if (swImage->Buffer) {
_mesa_align_free(swImage->Buffer);
swImage->Buffer = NULL;
}
if (swImage->ImageOffsets) {
free(swImage->ImageOffsets);
swImage->ImageOffsets = NULL;
}
}
void
_mesa_update_fetch_functions(struct gl_texture_object *texObj)
{
GLuint face, i;
GLuint dims;
dims = _mesa_get_texture_dimensions(texObj->Target);
for (face = 0; face < 6; face++) {
for (i = 0; i < MAX_TEXTURE_LEVELS; i++) {
if (texObj->Image[face][i]) {
set_fetch_functions(swrast_texture_image(texObj->Image[face][i]),
dims);
}
}
}
}
/**
* Code that overrides ctx->Driver.AllocTextureImageBuffer may use this to
* initialize the fields of swrast_texture_image without allocating the image
* buffer or initializing ImageOffsets or RowStride.
*
* Returns GL_TRUE on success, GL_FALSE on memory allocation failure.
*/
void
_swrast_init_texture_image(struct gl_texture_image *texImage, GLsizei width,
GLsizei height, GLsizei depth)
{
struct swrast_texture_image *swImg = swrast_texture_image(texImage);
if ((width == 1 || _mesa_is_pow_two(texImage->Width2)) &&
(height == 1 || _mesa_is_pow_two(texImage->Height2)) &&
(depth == 1 || _mesa_is_pow_two(texImage->Depth2)))
swImg->_IsPowerOfTwo = GL_TRUE;
else
swImg->_IsPowerOfTwo = GL_FALSE;
/* Compute Width/Height/DepthScale for mipmap lod computation */
swImg->WidthScale = (GLfloat) texImage->Width;
swImg->HeightScale = (GLfloat) texImage->Height;
swImg->DepthScale = (GLfloat) texImage->Depth;
}
/**
* Update the renderbuffer wrapper for rendering to a texture.
* For example, update the width, height of the RB based on the texture size,
* update the internal format info, etc.
*/
static void
update_wrapper(struct gl_context *ctx, struct gl_renderbuffer_attachment *att)
{
struct gl_renderbuffer *rb = att->Renderbuffer;
struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
struct swrast_texture_image *swImage;
gl_format format;
GLuint zOffset;
(void) ctx;
swImage = swrast_texture_image(_mesa_get_attachment_teximage(att));
assert(swImage);
format = swImage->Base.TexFormat;
if (att->Texture->Target == GL_TEXTURE_1D_ARRAY_EXT) {
zOffset = 0;
}
else {
zOffset = att->Zoffset;
}
rb->Width = swImage->Base.Width;
rb->Height = swImage->Base.Height;
rb->InternalFormat = swImage->Base.InternalFormat;
rb->_BaseFormat = _mesa_get_format_base_format(format);
/* Want to store linear values, not sRGB */
rb->Format = _mesa_get_srgb_format_linear(format);
/* Set the gl_renderbuffer::Buffer field so that mapping the buffer
* succeeds.
*/
if (att->Texture->Target == GL_TEXTURE_3D ||
att->Texture->Target == GL_TEXTURE_2D_ARRAY_EXT) {
srb->Buffer = swImage->Buffer +
swImage->ImageOffsets[zOffset] * _mesa_get_format_bytes(format);
}
else {
srb->Buffer = swImage->Buffer;
}
}
void
_swrast_unmap_texture(struct gl_context *ctx, struct gl_texture_object *texObj)
{
const GLuint faces = texObj->Target == GL_TEXTURE_CUBE_MAP ? 6 : 1;
GLuint face, level;
for (face = 0; face < faces; face++) {
for (level = texObj->BaseLevel; level < MAX_TEXTURE_LEVELS; level++) {
struct gl_texture_image *texImage = texObj->Image[face][level];
if (texImage) {
struct swrast_texture_image *swImage
= swrast_texture_image(texImage);
/* XXX we'll eventually call _swrast_unmap_teximage() here */
swImage->Map = NULL;
}
}
}
}
static void swrastSetTexBuffer2(__DRIcontext *pDRICtx, GLint target,
GLint texture_format, __DRIdrawable *dPriv)
{
struct dri_context *dri_ctx;
int x, y, w, h;
__DRIscreen *sPriv = dPriv->driScreenPriv;
struct gl_texture_unit *texUnit;
struct gl_texture_object *texObj;
struct gl_texture_image *texImage;
struct swrast_texture_image *swImage;
uint32_t internalFormat;
gl_format texFormat;
dri_ctx = pDRICtx->driverPrivate;
internalFormat = (texture_format == __DRI_TEXTURE_FORMAT_RGB ? 3 : 4);
texUnit = _mesa_get_current_tex_unit(&dri_ctx->Base);
texObj = _mesa_select_tex_object(&dri_ctx->Base, texUnit, target);
texImage = _mesa_get_tex_image(&dri_ctx->Base, texObj, target, 0);
swImage = swrast_texture_image(texImage);
_mesa_lock_texture(&dri_ctx->Base, texObj);
sPriv->swrast_loader->getDrawableInfo(dPriv, &x, &y, &w, &h, dPriv->loaderPrivate);
if (texture_format == __DRI_TEXTURE_FORMAT_RGB)
texFormat = MESA_FORMAT_XRGB8888;
else
texFormat = MESA_FORMAT_ARGB8888;
_mesa_init_teximage_fields(&dri_ctx->Base, texImage,
w, h, 1, 0, internalFormat, texFormat);
sPriv->swrast_loader->getImage(dPriv, x, y, w, h, (char *)swImage->Buffer,
dPriv->loaderPrivate);
_mesa_unlock_texture(&dri_ctx->Base, texObj);
}
/**
* Called via ctx->Driver.AllocTextureImageBuffer()
*/
GLboolean
_swrast_alloc_texture_image_buffer(struct gl_context *ctx,
struct gl_texture_image *texImage,
gl_format format, GLsizei width,
GLsizei height, GLsizei depth)
{
struct swrast_texture_image *swImg = swrast_texture_image(texImage);
GLuint bytes = _mesa_format_image_size(format, width, height, depth);
GLuint i;
/* This _should_ be true (revisit if these ever fail) */
assert(texImage->Width == width);
assert(texImage->Height == height);
assert(texImage->Depth == depth);
assert(!swImg->Buffer);
swImg->Buffer = _mesa_align_malloc(bytes, 512);
if (!swImg->Buffer)
return GL_FALSE;
/* RowStride and ImageOffsets[] describe how to address texels in 'Data' */
swImg->RowStride = width;
/* Allocate the ImageOffsets array and initialize to typical values.
* We allocate the array for 1D/2D textures too in order to avoid special-
* case code in the texstore routines.
*/
swImg->ImageOffsets = (GLuint *) malloc(depth * sizeof(GLuint));
if (!swImg->ImageOffsets)
return GL_FALSE;
for (i = 0; i < depth; i++) {
swImg->ImageOffsets[i] = i * width * height;
}
_swrast_init_texture_image(texImage, width, height, depth);
return GL_TRUE;
}
/**
* Map a 2D slice of a texture image into user space.
* (x,y,w,h) defines a region of interest (ROI). Reading/writing texels
* outside of the ROI is undefined.
*
* \param texImage the texture image
* \param slice the 3D image slice or array texture slice
* \param x, y, w, h region of interest
* \param mode bitmask of GL_MAP_READ_BIT, GL_MAP_WRITE_BIT
* \param mapOut returns start of mapping of region of interest
* \param rowStrideOut returns row stride (in bytes)
*/
void
_swrast_map_teximage(struct gl_context *ctx,
struct gl_texture_image *texImage,
GLuint slice,
GLuint x, GLuint y, GLuint w, GLuint h,
GLbitfield mode,
GLubyte **mapOut,
GLint *rowStrideOut)
{
struct swrast_texture_image *swImage = swrast_texture_image(texImage);
GLubyte *map;
GLint stride, texelSize;
GLuint bw, bh;
_mesa_check_map_teximage(texImage, slice, x, y, w, h);
texelSize = _mesa_get_format_bytes(texImage->TexFormat);
stride = _mesa_format_row_stride(texImage->TexFormat, texImage->Width);
_mesa_get_format_block_size(texImage->TexFormat, &bw, &bh);
assert(x % bw == 0);
assert(y % bh == 0);
if (!swImage->Buffer) {
/* probably ran out of memory when allocating tex mem */
*mapOut = NULL;
return;
}
map = swImage->Buffer;
/* apply x/y offset to map address */
map += stride * (y / bh) + texelSize * (x / bw);
*mapOut = map;
*rowStrideOut = stride;
}
