st/mesa: Initialize tex_target in compile_tgsi_instruction
Initialize to TGSI_TEXTURE_BUFFER (== 0), same as was done before the
variable type was changed to enum tgsi_texture_type.
Fixes a bunch of piglit failures with radeonsi, e.g.:
gles-3.0-transform-feedback-uniform-buffer-object: ../../../../src/gallium/auxiliary/tgsi/tgsi_util.c:502: tgsi_util_get_texture_coord_dim: Assertion `!"unknown texture target"' failed.
Corresponding compiler warning:
CXX state_tracker/st_glsl_to_tgsi.lo
../../../src/mesa/state_tracker/st_glsl_to_tgsi.cpp: In function ‘pipe_error st_translate_program(gl_context*, uint, ureg_program*, glsl_to_tgsi_visitor*, const gl_program*, GLuint, const ubyte*, const ubyte*, const ubyte*, const ubyte*, const ubyte*, GLuint, const ubyte*, const ubyte*, const ubyte*)’:
../../../src/mesa/state_tracker/st_glsl_to_tgsi.cpp:5992:23: warning: ‘tex_target’ may be used uninitialized in this function [-Wmaybe-uninitialized]
ureg_memory_insn(ureg, inst->op, dst, num_dst, src, num_src,
~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
inst->buffer_access,
~~~~~~~~~~~~~~~~~~~~
tex_target, inst->image_format);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../../src/mesa/state_tracker/st_glsl_to_tgsi.cpp:5866:27: note: ‘tex_target’ was declared here
enum tgsi_texture_type tex_target;
^~~~~~~~~~
Fixes:
9f9ce1625fb3 ("st/mesa: use TGSI enum types in st_glsl_to_tgsi.cpp")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>