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ir_to_mesa: Fix indexes of temps used in expressions.

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It looks like I managed to horribly mangle this in some rebase of the
branch.  Fixes:
glsl-fs-fragcoord
glsl-fs-mix
This commit is contained in:
Eric Anholt
2010-06-28 12:48:47 -07:00
parent 7dc1e0b326
commit d5a5df45a4
1 changed files with 30 additions and 29 deletions
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59
src/mesa/shader/ir_to_mesa.cpp
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@@ -385,35 +385,6 @@ ir_to_mesa_visitor::src_reg_for_float(float val)
return src_reg; return src_reg;
} }
/**
* In the initial pass of codegen, we assign temporary numbers to
* intermediate results. (not SSA -- variable assignments will reuse
* storage). Actual register allocation for the Mesa VM occurs in a
* pass over the Mesa IR later.
*/
ir_to_mesa_src_reg
ir_to_mesa_visitor::get_temp(const glsl_type *type)
{
ir_to_mesa_src_reg src_reg;
int swizzle[4];
int i;
assert(!type->is_array());
src_reg.file = PROGRAM_TEMPORARY;
src_reg.index = type->matrix_columns;
src_reg.reladdr = false;
for (i = 0; i < type->vector_elements; i++)
swizzle[i] = i;
for (; i < 4; i++)
swizzle[i] = type->vector_elements - 1;
src_reg.swizzle = MAKE_SWIZZLE4(swizzle[0], swizzle[1],
swizzle[2], swizzle[3]);
return src_reg;
}
static int static int
type_size(const struct glsl_type *type) type_size(const struct glsl_type *type)
{ {
@@ -448,6 +419,36 @@ type_size(const struct glsl_type *type)
} }
} }
/**
* In the initial pass of codegen, we assign temporary numbers to
* intermediate results. (not SSA -- variable assignments will reuse
* storage). Actual register allocation for the Mesa VM occurs in a
* pass over the Mesa IR later.
*/
ir_to_mesa_src_reg
ir_to_mesa_visitor::get_temp(const glsl_type *type)
{
ir_to_mesa_src_reg src_reg;
int swizzle[4];
int i;
assert(!type->is_array());
src_reg.file = PROGRAM_TEMPORARY;
src_reg.index = next_temp;
src_reg.reladdr = false;
next_temp += type_size(type);
for (i = 0; i < type->vector_elements; i++)
swizzle[i] = i;
for (; i < 4; i++)
swizzle[i] = type->vector_elements - 1;
src_reg.swizzle = MAKE_SWIZZLE4(swizzle[0], swizzle[1],
swizzle[2], swizzle[3]);
return src_reg;
}
temp_entry * temp_entry *
ir_to_mesa_visitor::find_variable_storage(ir_variable *var) ir_to_mesa_visitor::find_variable_storage(ir_variable *var)
{ {