* makes it easier to do backend-specific optimizations than doing so
* in the GLSL IR or in the native code.
*/
-#include <sys/types.h>
-
-#include "main/macros.h"
-#include "main/shaderobj.h"
-#include "program/prog_parameter.h"
-#include "program/prog_print.h"
-#include "program/prog_optimize.h"
-#include "util/register_allocate.h"
-#include "program/hash_table.h"
-#include "brw_context.h"
-#include "brw_eu.h"
-#include "brw_wm.h"
-#include "brw_cs.h"
-#include "brw_vec4.h"
-#include "brw_vec4_gs_visitor.h"
#include "brw_fs.h"
-#include "main/uniforms.h"
#include "glsl/nir/glsl_types.h"
-#include "glsl/ir_optimization.h"
-#include "program/sampler.h"
using namespace brw;
{
fs_inst *inst = NULL;
- if (op == ir_tg4) {
- /* When tg4 is used with the degenerate ZERO/ONE swizzles, don't bother
- * emitting anything other than setting up the constant result.
- */
- int swiz = GET_SWZ(key_tex->swizzles[sampler], gather_component);
- if (swiz == SWIZZLE_ZERO || swiz == SWIZZLE_ONE) {
-
- fs_reg res = vgrf(glsl_type::vec4_type);
- this->result = res;
-
- for (int i=0; i<4; i++) {
- bld.MOV(res, brw_imm_f(swiz == SWIZZLE_ZERO ? 0.0f : 1.0f));
- res = offset(res, bld, 1);
- }
- return;
- }
- }
-
if (op == ir_query_levels) {
/* textureQueryLevels() is implemented in terms of TXS so we need to
* pass a valid LOD argument.
inst->offset = offset_value.ud;
if (op == ir_tg4) {
- inst->offset |=
- gather_channel(gather_component, sampler) << 16; /* M0.2:16-17 */
+ if (gather_component == 1 &&
+ key_tex->gather_channel_quirk_mask & (1 << sampler)) {
+ /* gather4 sampler is broken for green channel on RG32F --
+ * we must ask for blue instead.
+ */
+ inst->offset |= 2 << 16;
+ } else {
+ inst->offset |= gather_component << 16;
+ }
if (devinfo->gen == 6)
emit_gen6_gather_wa(key_tex->gen6_gather_wa[sampler], dst);
bld.LOAD_PAYLOAD(dst, fixed_payload, components, 0);
}
- swizzle_result(op, dest_type->vector_elements, dst, sampler);
+ if (op == ir_query_levels) {
+ /* # levels is in .w */
+ dst = offset(dst, bld, 3);
+ }
+
+ this->result = dst;
}
/**
}
}
-/**
- * Set up the gather channel based on the swizzle, for gather4.
- */
-uint32_t
-fs_visitor::gather_channel(int orig_chan, uint32_t sampler)
-{
- int swiz = GET_SWZ(key_tex->swizzles[sampler], orig_chan);
- switch (swiz) {
- case SWIZZLE_X: return 0;
- case SWIZZLE_Y:
- /* gather4 sampler is broken for green channel on RG32F --
- * we must ask for blue instead.
- */
- if (key_tex->gather_channel_quirk_mask & (1 << sampler))
- return 2;
- return 1;
- case SWIZZLE_Z: return 2;
- case SWIZZLE_W: return 3;
- default:
- unreachable("Not reached"); /* zero, one swizzles handled already */
- }
-}
-
-/**
- * Swizzle the result of a texture result. This is necessary for
- * EXT_texture_swizzle as well as DEPTH_TEXTURE_MODE for shadow comparisons.
- */
-void
-fs_visitor::swizzle_result(ir_texture_opcode op, int dest_components,
- fs_reg orig_val, uint32_t sampler)
-{
- if (op == ir_query_levels) {
- /* # levels is in .w */
- this->result = offset(orig_val, bld, 3);
- return;
- }
-
- this->result = orig_val;
-
- /* txs,lod don't actually sample the texture, so swizzling the result
- * makes no sense.
- */
- if (op == ir_txs || op == ir_lod || op == ir_tg4)
- return;
-
- if (dest_components == 1) {
- /* Ignore DEPTH_TEXTURE_MODE swizzling. */
- } else if (key_tex->swizzles[sampler] != SWIZZLE_NOOP) {
- fs_reg swizzled_result = vgrf(glsl_type::vec4_type);
- swizzled_result.type = orig_val.type;
-
- for (int i = 0; i < 4; i++) {
- int swiz = GET_SWZ(key_tex->swizzles[sampler], i);
- fs_reg l = swizzled_result;
- l = offset(l, bld, i);
-
- if (swiz == SWIZZLE_ZERO) {
- bld.MOV(l, brw_imm_f(0.0f));
- } else if (swiz == SWIZZLE_ONE) {
- bld.MOV(l, brw_imm_f(1.0f));
- } else {
- bld.MOV(l, offset(orig_val, bld,
- GET_SWZ(key_tex->swizzles[sampler], i)));
- }
- }
- this->result = swizzled_result;
- }
-}
-
/** Emits a dummy fragment shader consisting of magenta for bringup purposes. */
void
fs_visitor::emit_dummy_fs()
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