static void
reset_cache(struct st_context *st)
{
struct pipe_context *pipe = st->pipe;
struct bitmap_cache *cache = st->bitmap.cache;
/*memset(cache->buffer, 0xff, sizeof(cache->buffer));*/
cache->empty = GL_TRUE;
cache->xmin = 1000000;
cache->xmax = -1000000;
cache->ymin = 1000000;
cache->ymax = -1000000;
if (cache->trans) {
pipe->transfer_destroy(pipe, cache->trans);
cache->trans = NULL;
}
assert(!cache->texture);
/* allocate a new texture */
cache->texture = st_texture_create(st, PIPE_TEXTURE_2D,
st->bitmap.tex_format, 0,
BITMAP_CACHE_WIDTH, BITMAP_CACHE_HEIGHT,
1, 1,
PIPE_BIND_SAMPLER_VIEW);
}
/**
* Create a temporary texture to hold an image of the given size.
* If width, height are not POT and the driver only handles POT textures,
* allocate the next larger size of texture that is POT.
*/
static struct pipe_resource *
alloc_texture(struct st_context *st, GLsizei width, GLsizei height,
enum pipe_format texFormat)
{
struct pipe_resource *pt;
pt = st_texture_create(st, st->internal_target, texFormat, 0,
width, height, 1, 1, PIPE_BIND_SAMPLER_VIEW);
return pt;
}
/**
* Called via ctx->Driver.AllocTextureStorage() to allocate texture memory
* for a whole mipmap stack.
*/
static GLboolean
st_AllocTextureStorage(struct gl_context *ctx,
struct gl_texture_object *texObj,
GLsizei levels, GLsizei width,
GLsizei height, GLsizei depth)
{
const GLuint numFaces = _mesa_num_tex_faces(texObj->Target);
struct st_context *st = st_context(ctx);
struct st_texture_object *stObj = st_texture_object(texObj);
GLuint ptWidth, ptHeight, ptDepth, ptLayers, bindings;
enum pipe_format fmt;
GLint level;
assert(levels > 0);
/* Save the level=0 dimensions */
stObj->width0 = width;
stObj->height0 = height;
stObj->depth0 = depth;
stObj->lastLevel = levels - 1;
fmt = st_mesa_format_to_pipe_format(texObj->Image[0][0]->TexFormat);
bindings = default_bindings(st, fmt);
st_gl_texture_dims_to_pipe_dims(texObj->Target,
width, height, depth,
&ptWidth, &ptHeight, &ptDepth, &ptLayers);
stObj->pt = st_texture_create(st,
gl_target_to_pipe(texObj->Target),
fmt,
levels,
ptWidth,
ptHeight,
ptDepth,
ptLayers,
bindings);
if (!stObj->pt)
return GL_FALSE;
/* Set image resource pointers */
for (level = 0; level < levels; level++) {
GLuint face;
for (face = 0; face < numFaces; face++) {
struct st_texture_image *stImage =
st_texture_image(texObj->Image[face][level]);
pipe_resource_reference(&stImage->pt, stObj->pt);
}
}
return GL_TRUE;
}
static struct pipe_texture *
create_color_map_texture(GLcontext *ctx)
{
struct pipe_context *pipe = ctx->st->pipe;
struct pipe_texture *pt;
enum pipe_format format;
const uint texSize = 256; /* simple, and usually perfect */
/* find an RGBA texture format */
format = st_choose_format(pipe, GL_RGBA, PIPE_TEXTURE_2D, PIPE_TEXTURE_USAGE_SAMPLER);
/* create texture for color map/table */
pt = st_texture_create(ctx->st, PIPE_TEXTURE_2D, format, 0,
texSize, texSize, 1, PIPE_TEXTURE_USAGE_SAMPLER);
return pt;
}
/**
* Create a texture which represents a bitmap image.
*/
static struct pipe_resource *
make_bitmap_texture(struct gl_context *ctx, GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct pipe_transfer *transfer;
ubyte *dest;
struct pipe_resource *pt;
/* PBO source... */
bitmap = _mesa_map_pbo_source(ctx, unpack, bitmap);
if (!bitmap) {
return NULL;
}
/**
* Create texture to hold bitmap pattern.
*/
pt = st_texture_create(st, st->internal_target, st->bitmap.tex_format,
0, width, height, 1, 1,
PIPE_BIND_SAMPLER_VIEW);
if (!pt) {
_mesa_unmap_pbo_source(ctx, unpack);
return NULL;
}
transfer = pipe_get_transfer(st->pipe, pt, 0, 0,
PIPE_TRANSFER_WRITE,
0, 0, width, height);
dest = pipe_transfer_map(pipe, transfer);
/* Put image into texture transfer */
memset(dest, 0xff, height * transfer->stride);
unpack_bitmap(st, 0, 0, width, height, unpack, bitmap,
dest, transfer->stride);
_mesa_unmap_pbo_source(ctx, unpack);
/* Release transfer */
pipe_transfer_unmap(pipe, transfer);
pipe->transfer_destroy(pipe, transfer);
return pt;
}
struct pipe_resource *
st_create_color_map_texture(struct gl_context *ctx)
{
struct st_context *st = st_context(ctx);
struct pipe_resource *pt;
enum pipe_format format;
const uint texSize = 256; /* simple, and usually perfect */
/* find an RGBA texture format */
format = st_choose_format(st, GL_RGBA, GL_NONE, GL_NONE,
PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW,
FALSE);
/* create texture for color map/table */
pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
texSize, texSize, 1, 1, 0, PIPE_BIND_SAMPLER_VIEW);
return pt;
}
static void
reset_cache(struct st_context *st)
{
struct bitmap_cache *cache = st->bitmap.cache;
/*memset(cache->buffer, 0xff, sizeof(cache->buffer));*/
cache->empty = GL_TRUE;
cache->xmin = 1000000;
cache->xmax = -1000000;
cache->ymin = 1000000;
cache->ymax = -1000000;
assert(!cache->texture);
/* allocate a new texture */
cache->texture = st_texture_create(st, st->internal_target,
st->bitmap.tex_format, 0,
BITMAP_CACHE_WIDTH, BITMAP_CACHE_HEIGHT,
1, 1, 0,
PIPE_BIND_SAMPLER_VIEW);
}
/**
* Called via ctx->Driver.GenerateMipmap().
*/
void
st_generate_mipmap(struct gl_context *ctx, GLenum target,
struct gl_texture_object *texObj)
{
struct st_context *st = st_context(ctx);
struct st_texture_object *stObj = st_texture_object(texObj);
struct pipe_resource *pt = st_get_texobj_resource(texObj);
const uint baseLevel = texObj->BaseLevel;
uint lastLevel, first_layer, last_layer;
uint dstLevel;
if (!pt)
return;
/* not sure if this ultimately actually should work,
but we're not supporting multisampled textures yet. */
assert(pt->nr_samples < 2);
/* find expected last mipmap level to generate*/
lastLevel = compute_num_levels(ctx, texObj, target) - 1;
if (lastLevel == 0)
return;
/* The texture isn't in a "complete" state yet so set the expected
* lastLevel here, since it won't get done in st_finalize_texture().
*/
stObj->lastLevel = lastLevel;
if (pt->last_level < lastLevel) {
/* The current gallium texture doesn't have space for all the
* mipmap levels we need to generate. So allocate a new texture.
*/
struct pipe_resource *oldTex = stObj->pt;
/* create new texture with space for more levels */
stObj->pt = st_texture_create(st,
oldTex->target,
oldTex->format,
lastLevel,
oldTex->width0,
oldTex->height0,
oldTex->depth0,
oldTex->array_size,
0,
oldTex->bind);
/* This will copy the old texture's base image into the new texture
* which we just allocated.
*/
st_finalize_texture(ctx, st->pipe, texObj);
/* release the old tex (will likely be freed too) */
pipe_resource_reference(&oldTex, NULL);
st_texture_release_all_sampler_views(stObj);
}
else {
/* Make sure that the base texture image data is present in the
* texture buffer.
*/
st_finalize_texture(ctx, st->pipe, texObj);
}
pt = stObj->pt;
assert(pt->last_level >= lastLevel);
if (pt->target == PIPE_TEXTURE_CUBE) {
first_layer = last_layer = _mesa_tex_target_to_face(target);
}
else {
first_layer = 0;
last_layer = util_max_layer(pt, baseLevel);
}
/* Try to generate the mipmap by rendering/texturing. If that fails,
* use the software fallback.
*/
if (!util_gen_mipmap(st->pipe, pt, pt->format, baseLevel, lastLevel,
first_layer, last_layer, PIPE_TEX_FILTER_LINEAR)) {
_mesa_generate_mipmap(ctx, target, texObj);
}
/* Fill in the Mesa gl_texture_image fields */
for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
const uint srcLevel = dstLevel - 1;
const struct gl_texture_image *srcImage
= _mesa_get_tex_image(ctx, texObj, target, srcLevel);
struct gl_texture_image *dstImage;
struct st_texture_image *stImage;
uint border = srcImage->Border;
uint dstWidth, dstHeight, dstDepth;
dstWidth = u_minify(pt->width0, dstLevel);
if (texObj->Target == GL_TEXTURE_1D_ARRAY) {
dstHeight = pt->array_size;
}
else {
dstHeight = u_minify(pt->height0, dstLevel);
}
if (texObj->Target == GL_TEXTURE_2D_ARRAY ||
texObj->Target == GL_TEXTURE_CUBE_MAP_ARRAY) {
dstDepth = pt->array_size;
}
else {
dstDepth = u_minify(pt->depth0, dstLevel);
}
dstImage = _mesa_get_tex_image(ctx, texObj, target, dstLevel);
if (!dstImage) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
return;
}
/* Free old image data */
ctx->Driver.FreeTextureImageBuffer(ctx, dstImage);
/* initialize new image */
_mesa_init_teximage_fields(ctx, dstImage, dstWidth, dstHeight,
dstDepth, border, srcImage->InternalFormat,
srcImage->TexFormat);
stImage = st_texture_image(dstImage);
pipe_resource_reference(&stImage->pt, pt);
}
}
/**
* Called via ctx->Driver.AllocTextureImageBuffer().
* If the texture object/buffer already has space for the indicated image,
* we're done. Otherwise, allocate memory for the new texture image.
*/
static GLboolean
st_AllocTextureImageBuffer(struct gl_context *ctx,
struct gl_texture_image *texImage)
{
struct st_context *st = st_context(ctx);
struct st_texture_image *stImage = st_texture_image(texImage);
struct st_texture_object *stObj = st_texture_object(texImage->TexObject);
const GLuint level = texImage->Level;
GLuint width = texImage->Width;
GLuint height = texImage->Height;
GLuint depth = texImage->Depth;
DBG("%s\n", __FUNCTION__);
assert(!stImage->TexData);
assert(!stImage->pt); /* xxx this might be wrong */
/* Look if the parent texture object has space for this image */
if (stObj->pt &&
level <= stObj->pt->last_level &&
st_texture_match_image(stObj->pt, texImage)) {
/* this image will fit in the existing texture object's memory */
pipe_resource_reference(&stImage->pt, stObj->pt);
return GL_TRUE;
}
/* The parent texture object does not have space for this image */
pipe_resource_reference(&stObj->pt, NULL);
pipe_sampler_view_release(st->pipe, &stObj->sampler_view);
if (!guess_and_alloc_texture(st, stObj, stImage)) {
/* Probably out of memory.
* Try flushing any pending rendering, then retry.
*/
st_finish(st);
if (!guess_and_alloc_texture(st, stObj, stImage)) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
return GL_FALSE;
}
}
if (stObj->pt &&
st_texture_match_image(stObj->pt, texImage)) {
/* The image will live in the object's mipmap memory */
pipe_resource_reference(&stImage->pt, stObj->pt);
assert(stImage->pt);
return GL_TRUE;
}
else {
/* Create a new, temporary texture/resource/buffer to hold this
* one texture image. Note that when we later access this image
* (either for mapping or copying) we'll want to always specify
* mipmap level=0, even if the image represents some other mipmap
* level.
*/
enum pipe_format format =
st_mesa_format_to_pipe_format(texImage->TexFormat);
GLuint bindings = default_bindings(st, format);
GLuint ptWidth, ptHeight, ptDepth, ptLayers;
st_gl_texture_dims_to_pipe_dims(stObj->base.Target,
width, height, depth,
&ptWidth, &ptHeight, &ptDepth, &ptLayers);
stImage->pt = st_texture_create(st,
gl_target_to_pipe(stObj->base.Target),
format,
0, /* lastLevel */
ptWidth,
ptHeight,
ptDepth,
ptLayers,
bindings);
return stImage->pt != NULL;
}
}
/**
* Try to allocate a pipe_resource object for the given st_texture_object.
*
* We use the given st_texture_image as a clue to determine the size of the
* mipmap image at level=0.
*
* \return GL_TRUE for success, GL_FALSE if out of memory.
*/
static GLboolean
guess_and_alloc_texture(struct st_context *st,
struct st_texture_object *stObj,
const struct st_texture_image *stImage)
{
GLuint lastLevel, width, height, depth;
GLuint bindings;
GLuint ptWidth, ptHeight, ptDepth, ptLayers;
enum pipe_format fmt;
DBG("%s\n", __FUNCTION__);
assert(!stObj->pt);
if (!guess_base_level_size(stObj->base.Target,
stImage->base.Width2,
stImage->base.Height2,
stImage->base.Depth2,
stImage->base.Level,
&width, &height, &depth)) {
/* we can't determine the image size at level=0 */
stObj->width0 = stObj->height0 = stObj->depth0 = 0;
/* this is not an out of memory error */
return GL_TRUE;
}
/* At this point, (width x height x depth) is the expected size of
* the level=0 mipmap image.
*/
/* Guess a reasonable value for lastLevel. With OpenGL we have no
* idea how many mipmap levels will be in a texture until we start
* to render with it. Make an educated guess here but be prepared
* to re-allocating a texture buffer with space for more (or fewer)
* mipmap levels later.
*/
if ((stObj->base.Sampler.MinFilter == GL_NEAREST ||
stObj->base.Sampler.MinFilter == GL_LINEAR ||
(stObj->base.BaseLevel == 0 &&
stObj->base.MaxLevel == 0) ||
stImage->base._BaseFormat == GL_DEPTH_COMPONENT ||
stImage->base._BaseFormat == GL_DEPTH_STENCIL_EXT) &&
!stObj->base.GenerateMipmap &&
stImage->base.Level == 0) {
/* only alloc space for a single mipmap level */
lastLevel = 0;
}
else {
/* alloc space for a full mipmap */
lastLevel = _mesa_get_tex_max_num_levels(stObj->base.Target,
width, height, depth) - 1;
}
/* Save the level=0 dimensions */
stObj->width0 = width;
stObj->height0 = height;
stObj->depth0 = depth;
fmt = st_mesa_format_to_pipe_format(stImage->base.TexFormat);
bindings = default_bindings(st, fmt);
st_gl_texture_dims_to_pipe_dims(stObj->base.Target,
width, height, depth,
&ptWidth, &ptHeight, &ptDepth, &ptLayers);
stObj->pt = st_texture_create(st,
gl_target_to_pipe(stObj->base.Target),
fmt,
lastLevel,
ptWidth,
ptHeight,
ptDepth,
ptLayers,
bindings);
stObj->lastLevel = lastLevel;
DBG("%s returning %d\n", __FUNCTION__, (stObj->pt != NULL));
return stObj->pt != NULL;
}
/**
* Called during state validation. When this function is finished,
* the texture object should be ready for rendering.
* \return GL_TRUE for success, GL_FALSE for failure (out of mem)
*/
GLboolean
st_finalize_texture(struct gl_context *ctx,
struct pipe_context *pipe,
struct gl_texture_object *tObj)
{
struct st_context *st = st_context(ctx);
struct st_texture_object *stObj = st_texture_object(tObj);
const GLuint nr_faces = (stObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
GLuint face;
struct st_texture_image *firstImage;
enum pipe_format firstImageFormat;
GLuint ptWidth, ptHeight, ptDepth, ptLayers;
if (_mesa_is_texture_complete(tObj, &tObj->Sampler)) {
/* The texture is complete and we know exactly how many mipmap levels
* are present/needed. This is conditional because we may be called
* from the st_generate_mipmap() function when the texture object is
* incomplete. In that case, we'll have set stObj->lastLevel before
* we get here.
*/
if (stObj->base.Sampler.MinFilter == GL_LINEAR ||
stObj->base.Sampler.MinFilter == GL_NEAREST)
stObj->lastLevel = stObj->base.BaseLevel;
else
stObj->lastLevel = stObj->base._MaxLevel;
}
firstImage = st_texture_image(stObj->base.Image[0][stObj->base.BaseLevel]);
assert(firstImage);
/* If both firstImage and stObj point to a texture which can contain
* all active images, favour firstImage. Note that because of the
* completeness requirement, we know that the image dimensions
* will match.
*/
if (firstImage->pt &&
firstImage->pt != stObj->pt &&
(!stObj->pt || firstImage->pt->last_level >= stObj->pt->last_level)) {
pipe_resource_reference(&stObj->pt, firstImage->pt);
pipe_sampler_view_release(st->pipe, &stObj->sampler_view);
}
/* Find gallium format for the Mesa texture */
firstImageFormat = st_mesa_format_to_pipe_format(firstImage->base.TexFormat);
/* Find size of level=0 Gallium mipmap image, plus number of texture layers */
{
GLuint width, height, depth;
if (!guess_base_level_size(stObj->base.Target,
firstImage->base.Width2,
firstImage->base.Height2,
firstImage->base.Depth2,
firstImage->base.Level,
&width, &height, &depth)) {
width = stObj->width0;
height = stObj->height0;
depth = stObj->depth0;
}
/* convert GL dims to Gallium dims */
st_gl_texture_dims_to_pipe_dims(stObj->base.Target, width, height, depth,
&ptWidth, &ptHeight, &ptDepth, &ptLayers);
}
/* If we already have a gallium texture, check that it matches the texture
* object's format, target, size, num_levels, etc.
*/
if (stObj->pt) {
if (stObj->pt->target != gl_target_to_pipe(stObj->base.Target) ||
!st_sampler_compat_formats(stObj->pt->format, firstImageFormat) ||
stObj->pt->last_level < stObj->lastLevel ||
stObj->pt->width0 != ptWidth ||
stObj->pt->height0 != ptHeight ||
stObj->pt->depth0 != ptDepth ||
stObj->pt->array_size != ptLayers)
{
/* The gallium texture does not match the Mesa texture so delete the
* gallium texture now. We'll make a new one below.
*/
pipe_resource_reference(&stObj->pt, NULL);
pipe_sampler_view_release(st->pipe, &stObj->sampler_view);
st->dirty.st |= ST_NEW_FRAMEBUFFER;
}
}
/* May need to create a new gallium texture:
*/
if (!stObj->pt) {
GLuint bindings = default_bindings(st, firstImageFormat);
stObj->pt = st_texture_create(st,
gl_target_to_pipe(stObj->base.Target),
firstImageFormat,
stObj->lastLevel,
ptWidth,
ptHeight,
ptDepth,
ptLayers,
bindings);
if (!stObj->pt) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glTexImage");
return GL_FALSE;
}
}
/* Pull in any images not in the object's texture:
*/
for (face = 0; face < nr_faces; face++) {
GLuint level;
for (level = stObj->base.BaseLevel; level <= stObj->lastLevel; level++) {
struct st_texture_image *stImage =
st_texture_image(stObj->base.Image[face][level]);
/* Need to import images in main memory or held in other textures.
*/
if (stImage && stObj->pt != stImage->pt) {
if (level == 0 ||
(stImage->base.Width == u_minify(stObj->width0, level) &&
stImage->base.Height == u_minify(stObj->height0, level) &&
stImage->base.Depth == u_minify(stObj->depth0, level))) {
/* src image fits expected dest mipmap level size */
copy_image_data_to_texture(st, stObj, level, stImage);
}
}
}
}
return GL_TRUE;
}
static void
st_CopyPixels(GLcontext *ctx, GLint srcx, GLint srcy,
GLsizei width, GLsizei height,
GLint dstx, GLint dsty, GLenum type)
{
struct st_context *st = ctx->st;
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
struct st_renderbuffer *rbRead;
struct st_vertex_program *stvp;
struct st_fragment_program *stfp;
struct pipe_texture *pt;
GLfloat *color;
enum pipe_format srcFormat, texFormat;
pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
st_validate_state(st);
if (srcx < 0) {
width -= -srcx;
dstx += -srcx;
srcx = 0;
}
if (srcy < 0) {
height -= -srcy;
dsty += -srcy;
srcy = 0;
}
if (dstx < 0) {
width -= -dstx;
srcx += -dstx;
dstx = 0;
}
if (dsty < 0) {
height -= -dsty;
srcy += -dsty;
dsty = 0;
}
if (width < 0 || height < 0)
return;
if (type == GL_STENCIL) {
/* can't use texturing to do stencil */
copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty);
return;
}
if (type == GL_COLOR) {
rbRead = st_get_color_read_renderbuffer(ctx);
color = NULL;
stfp = combined_drawpix_fragment_program(ctx);
stvp = st_make_passthrough_vertex_shader(ctx->st, GL_FALSE);
}
else {
assert(type == GL_DEPTH);
rbRead = st_renderbuffer(ctx->ReadBuffer->_DepthBuffer);
color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0];
stfp = make_fragment_shader_z(ctx->st);
stvp = st_make_passthrough_vertex_shader(ctx->st, GL_TRUE);
}
srcFormat = rbRead->texture->format;
if (screen->is_format_supported(screen, srcFormat, PIPE_TEXTURE_2D,
PIPE_TEXTURE_USAGE_SAMPLER, 0)) {
texFormat = srcFormat;
}
else {
/* srcFormat can't be used as a texture format */
if (type == GL_DEPTH) {
texFormat = st_choose_format(pipe, GL_DEPTH_COMPONENT, PIPE_TEXTURE_2D,
PIPE_TEXTURE_USAGE_DEPTH_STENCIL);
assert(texFormat != PIPE_FORMAT_NONE); /* XXX no depth texture formats??? */
}
else {
/* default color format */
texFormat = st_choose_format(pipe, GL_RGBA, PIPE_TEXTURE_2D,
PIPE_TEXTURE_USAGE_SAMPLER);
assert(texFormat != PIPE_FORMAT_NONE);
}
}
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
srcy = ctx->DrawBuffer->Height - srcy - height;
if (srcy < 0) {
height -= -srcy;
srcy = 0;
}
if (height < 0)
return;
}
pt = st_texture_create(ctx->st, PIPE_TEXTURE_2D, texFormat, 0,
width, height, 1,
PIPE_TEXTURE_USAGE_SAMPLER);
if (!pt)
return;
if (srcFormat == texFormat) {
/* copy source framebuffer surface into mipmap/texture */
struct pipe_surface *psRead = screen->get_tex_surface(screen,
rbRead->texture, 0, 0, 0,
PIPE_BUFFER_USAGE_GPU_READ);
struct pipe_surface *psTex = screen->get_tex_surface(screen, pt, 0, 0, 0,
PIPE_BUFFER_USAGE_GPU_WRITE );
pipe->surface_copy(pipe,
psTex, /* dest */
0, 0, /* destx/y */
psRead,
srcx, srcy, width, height);
pipe_surface_reference(&psRead, NULL);
pipe_surface_reference(&psTex, NULL);
}
else {
/* CPU-based fallback/conversion */
struct pipe_transfer *ptRead =
st_cond_flush_get_tex_transfer(st, rbRead->texture, 0, 0, 0,
PIPE_TRANSFER_READ, srcx, srcy, width,
height);
struct pipe_transfer *ptTex;
enum pipe_transfer_usage transfer_usage;
if (type == GL_DEPTH && pf_is_depth_and_stencil(pt->format))
transfer_usage = PIPE_TRANSFER_READ_WRITE;
else
transfer_usage = PIPE_TRANSFER_WRITE;
ptTex = st_cond_flush_get_tex_transfer(st, pt, 0, 0, 0, transfer_usage,
0, 0, width, height);
if (type == GL_COLOR) {
/* alternate path using get/put_tile() */
GLfloat *buf = (GLfloat *) _mesa_malloc(width * height * 4 * sizeof(GLfloat));
pipe_get_tile_rgba(ptRead, 0, 0, width, height, buf);
pipe_put_tile_rgba(ptTex, 0, 0, width, height, buf);
_mesa_free(buf);
}
else {
/* GL_DEPTH */
GLuint *buf = (GLuint *) _mesa_malloc(width * height * sizeof(GLuint));
pipe_get_tile_z(ptRead, 0, 0, width, height, buf);
pipe_put_tile_z(ptTex, 0, 0, width, height, buf);
_mesa_free(buf);
}
screen->tex_transfer_destroy(ptRead);
screen->tex_transfer_destroy(ptTex);
}
/* draw textured quad */
draw_textured_quad(ctx, dstx, dsty, ctx->Current.RasterPos[2],
width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY,
pt, stvp, stfp, color, GL_TRUE);
pipe_texture_reference(&pt, NULL);
}
/**
* Make texture containing an image for glDrawPixels image.
* If 'pixels' is NULL, leave the texture image data undefined.
*/
static struct pipe_texture *
make_texture(struct st_context *st,
GLsizei width, GLsizei height, GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels)
{
GLcontext *ctx = st->ctx;
struct pipe_context *pipe = st->pipe;
struct pipe_screen *screen = pipe->screen;
const struct gl_texture_format *mformat;
struct pipe_texture *pt;
enum pipe_format pipeFormat;
GLuint cpp;
GLenum baseFormat;
baseFormat = _mesa_base_format(format);
mformat = st_ChooseTextureFormat(ctx, baseFormat, format, type);
assert(mformat);
pipeFormat = st_mesa_format_to_pipe_format(mformat->MesaFormat);
assert(pipeFormat);
cpp = st_sizeof_format(pipeFormat);
pixels = _mesa_map_drawpix_pbo(ctx, unpack, pixels);
if (!pixels)
return NULL;
pt = st_texture_create(st, PIPE_TEXTURE_2D, pipeFormat, 0, width, height, 1,
PIPE_TEXTURE_USAGE_SAMPLER);
if (!pt) {
_mesa_unmap_drawpix_pbo(ctx, unpack);
return NULL;
}
{
struct pipe_transfer *transfer;
static const GLuint dstImageOffsets = 0;
GLboolean success;
GLubyte *dest;
const GLbitfield imageTransferStateSave = ctx->_ImageTransferState;
/* we'll do pixel transfer in a fragment shader */
ctx->_ImageTransferState = 0x0;
transfer = st_no_flush_get_tex_transfer(st, pt, 0, 0, 0,
PIPE_TRANSFER_WRITE, 0, 0,
width, height);
/* map texture transfer */
dest = screen->transfer_map(screen, transfer);
/* Put image into texture transfer.
* Note that the image is actually going to be upside down in
* the texture. We deal with that with texcoords.
*/
success = mformat->StoreImage(ctx, 2, /* dims */
baseFormat, /* baseInternalFormat */
mformat, /* gl_texture_format */
dest, /* dest */
0, 0, 0, /* dstX/Y/Zoffset */
transfer->stride, /* dstRowStride, bytes */
&dstImageOffsets, /* dstImageOffsets */
width, height, 1, /* size */
format, type, /* src format/type */
pixels, /* data source */
unpack);
/* unmap */
screen->transfer_unmap(screen, transfer);
screen->tex_transfer_destroy(transfer);
assert(success);
/* restore */
ctx->_ImageTransferState = imageTransferStateSave;
}
_mesa_unmap_drawpix_pbo(ctx, unpack);
return pt;
}
