- /* dest of first pixel in client memory */
- GLubyte *dst = _mesa_image_address2d(&clippedPacking, dest, width,
- height, format, type, 0, 0);
- /* dest row stride */
- const GLint dstStride = _mesa_image_row_stride(&clippedPacking, width,
- format, type);
-
- if (pformat == PIPE_FORMAT_Z24_UNORM_S8_UINT ||
- pformat == PIPE_FORMAT_Z24X8_UNORM) {
- if (format == GL_DEPTH_COMPONENT) {
- for (i = 0; i < height; i++) {
- GLuint ztemp[MAX_WIDTH];
- GLfloat zfloat[MAX_WIDTH];
- const double scale = 1.0 / ((1 << 24) - 1);
- pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);
- y += yStep;
- for (j = 0; j < width; j++) {
- zfloat[j] = (float) (scale * (ztemp[j] & 0xffffff));
- }
- _mesa_pack_depth_span(ctx, width, dst, type,
- zfloat, &clippedPacking);
- dst += dstStride;
- }
- }
- else {
- /* XXX: unreachable code -- should be before st_read_stencil_pixels */
- assert(format == GL_DEPTH_STENCIL_EXT);
- for (i = 0; i < height; i++) {
- GLuint *zshort = (GLuint *)dst;
- pipe_get_tile_raw(pipe, trans, 0, y, width, 1, dst, 0);
- y += yStep;
- /* Reverse into 24/8 */
- for (j = 0; j < width; j++) {
- zshort[j] = (zshort[j] << 8) | (zshort[j] >> 24);
- }
- dst += dstStride;
- }
- }
- }
- else if (pformat == PIPE_FORMAT_S8_UINT_Z24_UNORM ||
- pformat == PIPE_FORMAT_X8Z24_UNORM) {
- if (format == GL_DEPTH_COMPONENT) {
- for (i = 0; i < height; i++) {
- GLuint ztemp[MAX_WIDTH];
- GLfloat zfloat[MAX_WIDTH];
- const double scale = 1.0 / ((1 << 24) - 1);
- pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);
- y += yStep;
- for (j = 0; j < width; j++) {
- zfloat[j] = (float) (scale * ((ztemp[j] >> 8) & 0xffffff));
- }
- _mesa_pack_depth_span(ctx, width, dst, type,
- zfloat, &clippedPacking);
- dst += dstStride;
- }
- }
- else {
- /* XXX: unreachable code -- should be before st_read_stencil_pixels */
- assert(format == GL_DEPTH_STENCIL_EXT);
- for (i = 0; i < height; i++) {
- pipe_get_tile_raw(pipe, trans, 0, y, width, 1, dst, 0);
- y += yStep;
- dst += dstStride;
- }
- }
- }
- else if (pformat == PIPE_FORMAT_Z16_UNORM) {
- for (i = 0; i < height; i++) {
- GLushort ztemp[MAX_WIDTH];
- GLfloat zfloat[MAX_WIDTH];
- const double scale = 1.0 / 0xffff;
- pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);
- y += yStep;
- for (j = 0; j < width; j++) {
- zfloat[j] = (float) (scale * ztemp[j]);
- }
- _mesa_pack_depth_span(ctx, width, dst, type,
- zfloat, &clippedPacking);
- dst += dstStride;
- }
- }
- else if (pformat == PIPE_FORMAT_Z32_UNORM) {
- for (i = 0; i < height; i++) {
- GLuint ztemp[MAX_WIDTH];
- GLfloat zfloat[MAX_WIDTH];
- const double scale = 1.0 / 0xffffffff;
- pipe_get_tile_raw(pipe, trans, 0, y, width, 1, ztemp, 0);
- y += yStep;
- for (j = 0; j < width; j++) {
- zfloat[j] = (float) (scale * ztemp[j]);
- }
- _mesa_pack_depth_span(ctx, width, dst, type,
- zfloat, &clippedPacking);
- dst += dstStride;
- }
- }
- else if (pformat == PIPE_FORMAT_Z32_FLOAT) {
- for (i = 0; i < height; i++) {
- GLfloat zfloat[MAX_WIDTH];
- pipe_get_tile_raw(pipe, trans, 0, y, width, 1, zfloat, 0);
- y += yStep;
- _mesa_pack_depth_span(ctx, width, dst, type,
- zfloat, &clippedPacking);
- dst += dstStride;
- }
- }
- else if (pformat == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT) {
- assert(format == GL_DEPTH_COMPONENT);
- for (i = 0; i < height; i++) {
- GLfloat zfloat[MAX_WIDTH]; /* Z32 */
- GLfloat zfloat2[MAX_WIDTH*2]; /* Z32X32 */
- pipe_get_tile_raw(pipe, trans, 0, y, width, 1, zfloat2, 0);
- y += yStep;
- for (j = 0; j < width; j++) {
- zfloat[j] = zfloat2[j*2];
- }
- _mesa_pack_depth_span(ctx, width, dst, type,
- zfloat, &clippedPacking);
- dst += dstStride;
- }
- }
- else if (util_format_is_pure_sint(pformat)) {
- for (i = 0; i < height; i++) {
- if (type == GL_UNSIGNED_INT)
- pipe_get_tile_ui_format(pipe, trans, 0, y, width, 1,
- pformat, dui);
- else
- pipe_get_tile_i_format(pipe, trans, 0, y, width, 1,
- pformat, di);
- y += yStep;
- if (!dfStride) {
- _mesa_pack_rgba_span_int(ctx, width, (GLuint (*)[4])temp,
- format, type, dst);
- dst += dstStride;
- }
- }
- } else if (util_format_is_pure_uint(pformat)) {
- for (i = 0; i < height; i++) {
- if (type == GL_UNSIGNED_INT)
- pipe_get_tile_ui_format(pipe, trans, 0, y, width, 1,
- pformat, dui);
- else
- pipe_get_tile_i_format(pipe, trans, 0, y, width, 1,
- pformat, di);
- y += yStep;
- df += dfStride;
- if (!dfStride) {
- _mesa_pack_rgba_span_int(ctx, width, (GLuint (*)[4])temp,
- format, type, dst);
- dst += dstStride;
- }
- }
- } else {
- /* RGBA format */
- /* Do a row at a time to flip image data vertically */
- for (i = 0; i < height; i++) {
- pipe_get_tile_rgba_format(pipe, trans, 0, y, width, 1,
- pformat, df);
- y += yStep;
- df += dfStride;
- if (!dfStride) {
- _mesa_pack_rgba_span_float(ctx, width, temp, format, type, dst,
- &clippedPacking, transferOps);
- dst += dstStride;
- }
- }