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i965/fs: Rudimentary support for non-floating point texture results. 

Not all texturing operations return floating point data.  For example,
the resinfo message (textureSize or TXS) returns integer data.  In the
future, we'll also add integer texture support.

ir_texture's type field contains this information; use its base type to
appropriately type the destination register.  We want to keep it as a
four component vector, however, since SIMD8 samplers always have a
response length of 4.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Kenneth Graunke 2011-08-18 00:18:15 -07:00
parent 2054652796
commit b6bdcf2a90
1 changed files with 1 additions and 1 deletions
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2
src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
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@ -1075,7 +1075,7 @@ fs_visitor::visit(ir_texture *ir)
/* Writemasking doesn't eliminate channels on SIMD8 texture
* samples, so don't worry about them.
*/
fs_reg dst = fs_reg(this, glsl_type::vec4_type);
fs_reg dst = fs_reg(this, glsl_type::get_instance(ir->type->base_type, 4, 1));
if (intel->gen >= 7) {
inst = emit_texture_gen7(ir, dst, coordinate, sampler);