/**
* Store a 16-bit integer depth component texture image.
*/
static GLboolean
_mesa_texstore_z16(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffff;
(void) dims;
assert(dstFormat == MESA_FORMAT_Z_UNORM16);
assert(_mesa_get_format_bytes(dstFormat) == sizeof(GLushort));
{
/* general path */
GLint img, row;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = dstSlices[img];
for (row = 0; row < srcHeight; row++) {
const GLvoid *src = _mesa_image_address(dims, srcPacking,
srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
GLushort *dst16 = (GLushort *) dstRow;
_mesa_unpack_depth_span(ctx, srcWidth,
GL_UNSIGNED_SHORT, dst16, depthScale,
srcType, src, srcPacking);
dstRow += dstRowStride;
}
}
}
return GL_TRUE;
}
/**
* Store a 24-bit integer depth component texture image.
*/
static GLboolean
_mesa_texstore_z24_x8(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffffff;
(void) dims;
assert(dstFormat == MESA_FORMAT_X8_UINT_Z24_UNORM);
{
/* general path */
GLint img, row;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = dstSlices[img];
for (row = 0; row < srcHeight; row++) {
const GLvoid *src = _mesa_image_address(dims, srcPacking,
srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
GLuint *dst = (GLuint *) dstRow;
GLint i;
_mesa_unpack_depth_span(ctx, srcWidth,
GL_UNSIGNED_INT, dst,
depthScale, srcType, src, srcPacking);
for (i = 0; i < srcWidth; i++)
dst[i] <<= 8;
dstRow += dstRowStride;
}
}
}
return GL_TRUE;
}
/**
* Store a 32-bit integer or float depth component texture image.
*/
static GLboolean
_mesa_texstore_z32(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffffffff;
GLenum dstType;
(void) dims;
assert(dstFormat == MESA_FORMAT_Z_UNORM32 ||
dstFormat == MESA_FORMAT_Z_FLOAT32);
assert(_mesa_get_format_bytes(dstFormat) == sizeof(GLuint));
if (dstFormat == MESA_FORMAT_Z_UNORM32)
dstType = GL_UNSIGNED_INT;
else
dstType = GL_FLOAT;
{
/* general path */
GLint img, row;
for (img = 0; img < srcDepth; img++) {
GLubyte *dstRow = dstSlices[img];
for (row = 0; row < srcHeight; row++) {
const GLvoid *src = _mesa_image_address(dims, srcPacking,
srcAddr, srcWidth, srcHeight, srcFormat, srcType, img, row, 0);
_mesa_unpack_depth_span(ctx, srcWidth,
dstType, dstRow,
depthScale, srcType, src, srcPacking);
dstRow += dstRowStride;
}
}
}
return GL_TRUE;
}
static GLboolean
_mesa_texstore_z32f_x24s8(TEXSTORE_PARAMS)
{
GLint img, row;
const GLint srcRowStride
= _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType)
/ sizeof(uint64_t);
assert(dstFormat == MESA_FORMAT_Z32_FLOAT_S8X24_UINT);
assert(srcFormat == GL_DEPTH_STENCIL ||
srcFormat == GL_DEPTH_COMPONENT ||
srcFormat == GL_STENCIL_INDEX);
assert(srcFormat != GL_DEPTH_STENCIL ||
srcType == GL_UNSIGNED_INT_24_8 ||
srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
/* In case we only upload depth we need to preserve the stencil */
for (img = 0; img < srcDepth; img++) {
uint64_t *dstRow = (uint64_t *) dstSlices[img];
const uint64_t *src
= (const uint64_t *) _mesa_image_address(dims, srcPacking, srcAddr,
srcWidth, srcHeight,
srcFormat, srcType,
img, 0, 0);
for (row = 0; row < srcHeight; row++) {
/* The unpack functions with:
* dstType = GL_FLOAT_32_UNSIGNED_INT_24_8_REV
* only write their own dword, so the other dword (stencil
* or depth) is preserved. */
if (srcFormat != GL_STENCIL_INDEX)
_mesa_unpack_depth_span(ctx, srcWidth,
GL_FLOAT_32_UNSIGNED_INT_24_8_REV, /* dst type */
dstRow, /* dst addr */
~0U, srcType, src, srcPacking);
if (srcFormat != GL_DEPTH_COMPONENT)
_mesa_unpack_stencil_span(ctx, srcWidth,
GL_FLOAT_32_UNSIGNED_INT_24_8_REV, /* dst type */
dstRow, /* dst addr */
srcType, src, srcPacking,
ctx->_ImageTransferState);
src += srcRowStride;
dstRow += dstRowStride / sizeof(uint64_t);
}
}
return GL_TRUE;
}
/**
* Software fallback to do glDrawPixels(GL_STENCIL_INDEX) when we
* can't use a fragment shader to write stencil values.
*/
static void
draw_stencil_pixels(struct gl_context *ctx, GLint x, GLint y,
GLsizei width, GLsizei height, GLenum format, GLenum type,
const struct gl_pixelstore_attrib *unpack,
const GLvoid *pixels)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct st_renderbuffer *strb;
enum pipe_transfer_usage usage;
struct pipe_transfer *pt;
const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0;
GLint skipPixels;
ubyte *stmap;
struct gl_pixelstore_attrib clippedUnpack = *unpack;
if (!zoom) {
if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height,
&clippedUnpack)) {
/* totally clipped */
return;
}
}
strb = st_renderbuffer(ctx->DrawBuffer->
Attachment[BUFFER_STENCIL].Renderbuffer);
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
y = ctx->DrawBuffer->Height - y - height;
}
if(format != GL_DEPTH_STENCIL &&
util_format_get_component_bits(strb->format,
UTIL_FORMAT_COLORSPACE_ZS, 0) != 0)
usage = PIPE_TRANSFER_READ_WRITE;
else
usage = PIPE_TRANSFER_WRITE;
pt = pipe_get_transfer(pipe, strb->texture,
strb->rtt_level, strb->rtt_face + strb->rtt_slice,
usage, x, y,
width, height);
stmap = pipe_transfer_map(pipe, pt);
pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels);
assert(pixels);
/* if width > MAX_WIDTH, have to process image in chunks */
skipPixels = 0;
while (skipPixels < width) {
const GLint spanX = skipPixels;
const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH);
GLint row;
for (row = 0; row < height; row++) {
GLubyte sValues[MAX_WIDTH];
GLuint zValues[MAX_WIDTH];
GLenum destType = GL_UNSIGNED_BYTE;
const GLvoid *source = _mesa_image_address2d(&clippedUnpack, pixels,
width, height,
format, type,
row, skipPixels);
_mesa_unpack_stencil_span(ctx, spanWidth, destType, sValues,
type, source, &clippedUnpack,
ctx->_ImageTransferState);
if (format == GL_DEPTH_STENCIL) {
_mesa_unpack_depth_span(ctx, spanWidth, GL_UNSIGNED_INT, zValues,
(1 << 24) - 1, type, source,
&clippedUnpack);
}
if (zoom) {
_mesa_problem(ctx, "Gallium glDrawPixels(GL_STENCIL) with "
"zoom not complete");
}
{
GLint spanY;
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) {
spanY = height - row - 1;
}
else {
spanY = row;
}
/* now pack the stencil (and Z) values in the dest format */
switch (pt->resource->format) {
case PIPE_FORMAT_S8_USCALED:
{
ubyte *dest = stmap + spanY * pt->stride + spanX;
assert(usage == PIPE_TRANSFER_WRITE);
memcpy(dest, sValues, spanWidth);
}
break;
case PIPE_FORMAT_Z24_UNORM_S8_USCALED:
if (format == GL_DEPTH_STENCIL) {
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
GLint k;
assert(usage == PIPE_TRANSFER_WRITE);
for (k = 0; k < spanWidth; k++) {
dest[k] = zValues[k] | (sValues[k] << 24);
}
}
else {
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
GLint k;
assert(usage == PIPE_TRANSFER_READ_WRITE);
for (k = 0; k < spanWidth; k++) {
dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24);
}
}
break;
case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
if (format == GL_DEPTH_STENCIL) {
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
GLint k;
assert(usage == PIPE_TRANSFER_WRITE);
for (k = 0; k < spanWidth; k++) {
dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff);
}
}
else {
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4);
GLint k;
assert(usage == PIPE_TRANSFER_READ_WRITE);
for (k = 0; k < spanWidth; k++) {
dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff);
}
}
break;
default:
assert(0);
}
}
}
skipPixels += spanWidth;
}
_mesa_unmap_pbo_source(ctx, &clippedUnpack);
/* unmap the stencil buffer */
pipe_transfer_unmap(pipe, pt);
pipe->transfer_destroy(pipe, pt);
}
/**
* Store a combined depth/stencil texture image.
*/
static GLboolean
_mesa_texstore_s8_z24(TEXSTORE_PARAMS)
{
const GLuint depthScale = 0xffffff;
const GLint srcRowStride
= _mesa_image_row_stride(srcPacking, srcWidth, srcFormat, srcType);
GLint img, row;
GLuint *depth;
GLubyte *stencil;
assert(dstFormat == MESA_FORMAT_Z24_UNORM_S8_UINT);
assert(srcFormat == GL_DEPTH_STENCIL_EXT ||
srcFormat == GL_DEPTH_COMPONENT ||
srcFormat == GL_STENCIL_INDEX);
assert(srcFormat != GL_DEPTH_STENCIL_EXT ||
srcType == GL_UNSIGNED_INT_24_8_EXT ||
srcType == GL_FLOAT_32_UNSIGNED_INT_24_8_REV);
depth = malloc(srcWidth * sizeof(GLuint));
stencil = malloc(srcWidth * sizeof(GLubyte));
if (!depth || !stencil) {
free(depth);
free(stencil);
return GL_FALSE;
}
for (img = 0; img < srcDepth; img++) {
GLuint *dstRow = (GLuint *) dstSlices[img];
const GLubyte *src
= (const GLubyte *) _mesa_image_address(dims, srcPacking, srcAddr,
srcWidth, srcHeight,
srcFormat, srcType,
img, 0, 0);
for (row = 0; row < srcHeight; row++) {
GLint i;
GLboolean keepdepth = GL_FALSE, keepstencil = GL_FALSE;
if (srcFormat == GL_DEPTH_COMPONENT) { /* preserve stencil */
keepstencil = GL_TRUE;
}
else if (srcFormat == GL_STENCIL_INDEX) { /* preserve depth */
keepdepth = GL_TRUE;
}
if (keepdepth == GL_FALSE)
/* the 24 depth bits will be in the low position: */
_mesa_unpack_depth_span(ctx, srcWidth,
GL_UNSIGNED_INT, /* dst type */
keepstencil ? depth : dstRow, /* dst addr */
depthScale,
srcType, src, srcPacking);
if (keepstencil == GL_FALSE)
/* get the 8-bit stencil values */
_mesa_unpack_stencil_span(ctx, srcWidth,
GL_UNSIGNED_BYTE, /* dst type */
stencil, /* dst addr */
srcType, src, srcPacking,
ctx->_ImageTransferState);
/* merge stencil values into depth values */
for (i = 0; i < srcWidth; i++) {
if (keepstencil)
dstRow[i] = depth[i] | (dstRow[i] & 0xFF000000);
else
dstRow[i] = (dstRow[i] & 0xFFFFFF) | (stencil[i] << 24);
}
src += srcRowStride;
dstRow += dstRowStride / sizeof(GLuint);
}
}
free(depth);
free(stencil);
return GL_TRUE;
}
