diff options
Diffstat (limited to 'src/glsl')
| -rw-r--r-- | src/glsl/ast_function.cpp | 82 |
1 files changed, 46 insertions, 36 deletions
diff --git a/src/glsl/ast_function.cpp b/src/glsl/ast_function.cpp index c22dfa81eb8..1b8b3195e5b 100644 --- a/src/glsl/ast_function.cpp +++ b/src/glsl/ast_function.cpp @@ -572,16 +572,17 @@ emit_inline_vector_constructor(const glsl_type *type, ir_rvalue *rhs = new(ctx) ir_swizzle(first_param, 0, 0, 0, 0, lhs_components); ir_dereference_variable *lhs = new(ctx) ir_dereference_variable(var); + const unsigned mask = (1U << lhs_components) - 1; assert(rhs->type == lhs->type); - ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL); + ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL, mask); instructions->push_tail(inst); } else { unsigned base_component = 0; foreach_list(node, parameters) { - ir_rvalue *rhs = (ir_rvalue *) node; - unsigned rhs_components = rhs->type->components(); + ir_rvalue *param = (ir_rvalue *) node; + unsigned rhs_components = param->type->components(); /* Do not try to assign more components to the vector than it has! */ @@ -589,19 +590,23 @@ emit_inline_vector_constructor(const glsl_type *type, rhs_components = lhs_components - base_component; } - /* Emit an assignment of the constructor parameter to the next set of - * components in the temporary variable. + /* Generate a swizzle that puts the first element of the source at + * the location of the first element of the destination. */ - unsigned mask[4] = { 0, 0, 0, 0 }; - for (unsigned i = 0; i < rhs_components; i++) { - mask[i] = i + base_component; - } + unsigned swiz[4] = { 0, 0, 0, 0 }; + for (unsigned i = 0; i < rhs_components; i++) + swiz[i + base_component] = i; + /* Mask of fields to be written in the assignment. + */ + const unsigned write_mask = ((1U << rhs_components) - 1) + << base_component; - ir_rvalue *lhs_ref = new(ctx) ir_dereference_variable(var); - ir_swizzle *lhs = new(ctx) ir_swizzle(lhs_ref, mask, rhs_components); + ir_dereference *lhs = new(ctx) ir_dereference_variable(var); + ir_rvalue *rhs = new(ctx) ir_swizzle(param, swiz, lhs_components); - ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL); + ir_instruction *inst = + new(ctx) ir_assignment(lhs, rhs, NULL, write_mask); instructions->push_tail(inst); /* Advance the component index by the number of components that were @@ -631,18 +636,27 @@ assign_to_matrix_column(ir_variable *var, unsigned column, unsigned row_base, ir_rvalue *src, unsigned src_base, unsigned count, void *mem_ctx) { - const unsigned mask[8] = { 0, 1, 2, 3, 0, 0, 0, 0 }; - ir_constant *col_idx = new(mem_ctx) ir_constant(column); - ir_rvalue *column_ref = new(mem_ctx) ir_dereference_array(var, col_idx); + ir_dereference *column_ref = new(mem_ctx) ir_dereference_array(var, col_idx); assert(column_ref->type->components() >= (row_base + count)); - ir_rvalue *lhs = new(mem_ctx) ir_swizzle(column_ref, &mask[row_base], count); - assert(src->type->components() >= (src_base + count)); - ir_rvalue *rhs = new(mem_ctx) ir_swizzle(src, &mask[src_base], count); - return new(mem_ctx) ir_assignment(lhs, rhs, NULL); + /* Generate a swizzle that puts the first element of the source at the + * location of the first element of the destination. + */ + unsigned swiz[4] = { src_base, src_base, src_base, src_base }; + for (unsigned i = 0; i < count; i++) + swiz[i + row_base] = src_base + i; + + ir_rvalue *const rhs = + new(mem_ctx) ir_swizzle(src, swiz, column_ref->type->components()); + + /* Mask of fields to be written in the assignment. + */ + const unsigned write_mask = ((1U << count) - 1) << row_base; + + return new(mem_ctx) ir_assignment(column_ref, rhs, NULL, write_mask); } @@ -704,10 +718,9 @@ emit_inline_matrix_constructor(const glsl_type *type, NULL); instructions->push_tail(inst); - ir_rvalue *const rhs_ref = new(ctx) ir_dereference_variable(rhs_var); - ir_rvalue *const x_of_rhs = new(ctx) ir_swizzle(rhs_ref, 0, 0, 0, 0, 1); + ir_dereference *const rhs_ref = new(ctx) ir_dereference_variable(rhs_var); - inst = new(ctx) ir_assignment(x_of_rhs, first_param, NULL); + inst = new(ctx) ir_assignment(rhs_ref, first_param, NULL, 0x01); instructions->push_tail(inst); /* Assign the temporary vector to each column of the destination matrix @@ -813,11 +826,16 @@ emit_inline_matrix_constructor(const glsl_type *type, instructions->push_tail(inst); - const unsigned swiz[4] = { 0, 1, 2, 3 }; + unsigned swiz[4] = { 0, 0, 0, 0 }; + for (unsigned i = 1; i < src_matrix->type->vector_elements; i++) + swiz[i] = i; + const unsigned last_col = min(src_matrix->type->matrix_columns, var->type->matrix_columns); + const unsigned write_mask = (1U << var->type->vector_elements) - 1; + for (unsigned i = 0; i < last_col; i++) { - ir_rvalue *const lhs_col = + ir_dereference *const lhs = new(ctx) ir_dereference_array(var, new(ctx) ir_constant(i)); ir_rvalue *const rhs_col = new(ctx) ir_dereference_array(rhs_var, new(ctx) ir_constant(i)); @@ -830,26 +848,18 @@ emit_inline_matrix_constructor(const glsl_type *type, * It would be perfectly valid to unconditionally generate the * swizzles, this this will typically result in a more compact IR tree. */ - ir_rvalue *lhs; ir_rvalue *rhs; - if (lhs_col->type->vector_elements < rhs_col->type->vector_elements) { - lhs = lhs_col; - + if (lhs->type->vector_elements != rhs_col->type->vector_elements) { rhs = new(ctx) ir_swizzle(rhs_col, swiz, - lhs_col->type->vector_elements); - } else if (lhs_col->type->vector_elements - > rhs_col->type->vector_elements) { - lhs = new(ctx) ir_swizzle(lhs_col, swiz, - rhs_col->type->vector_elements); - rhs = rhs_col; + lhs->type->vector_elements); } else { - lhs = lhs_col; rhs = rhs_col; } assert(lhs->type == rhs->type); - ir_instruction *inst = new(ctx) ir_assignment(lhs, rhs, NULL); + ir_instruction *inst = + new(ctx) ir_assignment(lhs, rhs, NULL, write_mask); instructions->push_tail(inst); } } else { |