*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
+ * Copyright 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
*
**************************************************************************/
-
-
/**
* Generate SPU per-fragment code (actually per-quad code).
* \author Brian Paul
+ * \author Bob Ellison
*/
spe_release_register(f, amask_reg);
}
-/* This pair of functions is used inline to allocate and deallocate
+
+/**
+ * This pair of functions is used inline to allocate and deallocate
* optional constant registers. Once a constant is discovered to be
* needed, we will likely need it again, so we don't want to deallocate
* it and have to allocate and load it again unnecessarily.
*/
-static inline void
-setup_optional_register(struct spe_function *f, boolean *is_already_set, unsigned int *r)
+static INLINE void
+setup_optional_register(struct spe_function *f,
+ boolean *is_already_set,
+ uint *r)
{
- if (*is_already_set) return;
+ if (*is_already_set)
+ return;
*r = spe_allocate_available_register(f);
*is_already_set = true;
}
-static inline void
-release_optional_register(struct spe_function *f, boolean *is_already_set, unsigned int r)
+static INLINE void
+release_optional_register(struct spe_function *f,
+ boolean *is_already_set,
+ uint r)
{
- if (!*is_already_set) return;
+ if (!*is_already_set)
+ return;
spe_release_register(f, r);
*is_already_set = false;
}
-static inline void
-setup_const_register(struct spe_function *f, boolean *is_already_set, unsigned int *r, float value)
+static INLINE void
+setup_const_register(struct spe_function *f,
+ boolean *is_already_set,
+ uint *r,
+ float value)
{
- if (*is_already_set) return;
+ if (*is_already_set)
+ return;
setup_optional_register(f, is_already_set, r);
spe_load_float(f, *r, value);
}
-static inline void
-release_const_register(struct spe_function *f, boolean *is_already_set, unsigned int r)
+static INLINE void
+release_const_register(struct spe_function *f,
+ boolean *is_already_set,
+ uint r)
{
- release_optional_register(f, is_already_set, r);
+ release_optional_register(f, is_already_set, r);
}
/**
spe_release_register(f, ba_reg);
}
+
static void
gen_colormask(struct spe_function *f,
uint colormask,
a_mask = 0;
}
- /* Get a temporary register to hold the mask that will be applied to the fragment */
+ /* Get a temporary register to hold the mask that will be applied
+ * to the fragment
+ */
int colormask_reg = spe_allocate_available_register(f);
- /* The actual mask we're going to use is an OR of the remaining R, G, B, and A
- * masks. Load the result value into our temporary register.
+ /* The actual mask we're going to use is an OR of the remaining R, G, B,
+ * and A masks. Load the result value into our temporary register.
*/
spe_load_uint(f, colormask_reg, r_mask | g_mask | b_mask | a_mask);
spe_release_register(f, colormask_reg);
}
-/* This function is annoyingly similar to gen_depth_test(), above, except
+
+/**
+ * This function is annoyingly similar to gen_depth_test(), above, except
* that instead of comparing two varying values (i.e. fragment and buffer),
* we're comparing a varying value with a static value. As such, we have
* access to the Compare Immediate instructions where we don't in
*
* The return value in the stencil_pass_reg is a bitmask of valid
* fragments that also passed the stencil test. The bitmask of valid
- * fragments that failed would be found in (fragment_mask_reg & ~stencil_pass_reg).
+ * fragments that failed would be found in
+ * (fragment_mask_reg & ~stencil_pass_reg).
*/
static void
gen_stencil_test(struct spe_function *f, const struct pipe_stencil_state *state,
unsigned int fragment_mask_reg, unsigned int fbS_reg,
unsigned int stencil_pass_reg)
{
- /* Generate code that puts the set of passing fragments into the stencil_pass_reg
- * register, taking into account whether each fragment was active to begin with.
+ /* Generate code that puts the set of passing fragments into the
+ * stencil_pass_reg register, taking into account whether each fragment
+ * was active to begin with.
*/
switch (state->func) {
case PIPE_FUNC_EQUAL:
/* stencil_pass = fragment_mask & ((s&mask) == (reference&mask)) */
unsigned int tmp_masked_stencil = spe_allocate_available_register(f);
spe_and_uint(f, tmp_masked_stencil, fbS_reg, state->value_mask);
- spe_compare_equal_uint(f, stencil_pass_reg, tmp_masked_stencil, state->value_mask & state->ref_value);
+ spe_compare_equal_uint(f, stencil_pass_reg, tmp_masked_stencil,
+ state->value_mask & state->ref_value);
spe_and(f, stencil_pass_reg, fragment_mask_reg, stencil_pass_reg);
spe_release_register(f, tmp_masked_stencil);
}
/* stencil_pass = fragment_mask & ~((s&mask) == (reference&mask)) */
unsigned int tmp_masked_stencil = spe_allocate_available_register(f);
spe_and_uint(f, tmp_masked_stencil, fbS_reg, state->value_mask);
- spe_compare_equal_uint(f, stencil_pass_reg, tmp_masked_stencil, state->value_mask & state->ref_value);
+ spe_compare_equal_uint(f, stencil_pass_reg, tmp_masked_stencil,
+ state->value_mask & state->ref_value);
spe_andc(f, stencil_pass_reg, fragment_mask_reg, stencil_pass_reg);
spe_release_register(f, tmp_masked_stencil);
}
/* stencil_pass = fragment_mask & ((reference&mask) < (s & mask)) */
unsigned int tmp_masked_stencil = spe_allocate_available_register(f);
spe_and_uint(f, tmp_masked_stencil, fbS_reg, state->value_mask);
- spe_compare_greater_uint(f, stencil_pass_reg, tmp_masked_stencil, state->value_mask & state->ref_value);
+ spe_compare_greater_uint(f, stencil_pass_reg, tmp_masked_stencil,
+ state->value_mask & state->ref_value);
spe_and(f, stencil_pass_reg, fragment_mask_reg, stencil_pass_reg);
spe_release_register(f, tmp_masked_stencil);
}
if (state->value_mask == stencil_max_value) {
/* stencil_pass = fragment_mask & (reference >= s)
* = fragment_mask & ~(s > reference) */
- spe_compare_greater_uint(f, stencil_pass_reg, fbS_reg, state->ref_value);
+ spe_compare_greater_uint(f, stencil_pass_reg, fbS_reg,
+ state->ref_value);
spe_andc(f, stencil_pass_reg, fragment_mask_reg, stencil_pass_reg);
}
else {
/* stencil_pass = fragment_mask & ~((s&mask) > (reference&mask)) */
unsigned int tmp_masked_stencil = spe_allocate_available_register(f);
spe_and_uint(f, tmp_masked_stencil, fbS_reg, state->value_mask);
- spe_compare_greater_uint(f, stencil_pass_reg, tmp_masked_stencil, state->value_mask & state->ref_value);
+ spe_compare_greater_uint(f, stencil_pass_reg, tmp_masked_stencil,
+ state->value_mask & state->ref_value);
spe_andc(f, stencil_pass_reg, fragment_mask_reg, stencil_pass_reg);
spe_release_register(f, tmp_masked_stencil);
}
* in the stencil buffer - in other words, it should be usable as a mask.
*/
static void
-gen_stencil_values(struct spe_function *f, unsigned int stencil_op,
- unsigned int stencil_ref_value, unsigned int stencil_max_value,
- unsigned int fbS_reg, unsigned int newS_reg)
+gen_stencil_values(struct spe_function *f,
+ unsigned int stencil_op,
+ unsigned int stencil_ref_value,
+ unsigned int stencil_max_value,
+ unsigned int fbS_reg,
+ unsigned int newS_reg)
{
/* The code below assumes that newS_reg and fbS_reg are not the same
* register; if they can be, the calculations below will have to use
* and released by the corresponding spe_release_register_set() call.
*/
static void
-gen_get_stencil_values(struct spe_function *f, const struct pipe_stencil_state *stencil,
+gen_get_stencil_values(struct spe_function *f,
+ const struct pipe_stencil_state *stencil,
const unsigned int depth_enabled,
unsigned int fbS_reg,
- unsigned int *fail_reg, unsigned int *zfail_reg,
+ unsigned int *fail_reg,
+ unsigned int *zfail_reg,
unsigned int *zpass_reg)
{
unsigned zfail_op;
* This function will allocate a variant number of registers that
* will be released as part of the register set.
*/
- spe_comment(f, 0, facing == CELL_FACING_FRONT ? "Computing front-facing stencil values" : "Computing back-facing stencil values");
+ spe_comment(f, 0, facing == CELL_FACING_FRONT
+ ? "Computing front-facing stencil values"
+ : "Computing back-facing stencil values");
gen_get_stencil_values(f, stencil, dsa->depth.enabled, fbS_reg,
&stencil_fail_values, &stencil_pass_depth_fail_values,
&stencil_pass_depth_pass_values);
if (dsa->depth.enabled) {
spe_comment(f, 0, "Running stencil depth test");
zmask_reg = spe_allocate_available_register(f);
- modified_buffers |= gen_depth_test(f, dsa, mask_reg, fragZ_reg, fbZ_reg, zmask_reg);
+ modified_buffers |= gen_depth_test(f, dsa, mask_reg, fragZ_reg,
+ fbZ_reg, zmask_reg);
}
if (need_to_calculate_stencil_values) {
* depth passing mask. Note that zmask_reg *must* have been
* set above if we're here.
*/
- unsigned int stencil_pass_depth_fail_mask = spe_allocate_available_register(f);
+ unsigned int stencil_pass_depth_fail_mask =
+ spe_allocate_available_register(f);
+
spe_comment(f, 0, "Loading stencil pass/depth fail values");
spe_andc(f, stencil_pass_depth_fail_mask, stencil_pass_reg, zmask_reg);
- spe_selb(f, newS_reg, newS_reg, stencil_pass_depth_fail_values, stencil_pass_depth_fail_mask);
+ spe_selb(f, newS_reg, newS_reg, stencil_pass_depth_fail_values,
+ stencil_pass_depth_fail_mask);
spe_release_register(f, stencil_pass_depth_fail_mask);
modified_buffers = true;
* the fragment ops appended.
*/
void
-cell_gen_fragment_function(struct cell_context *cell, const uint facing, struct spe_function *f)
+cell_gen_fragment_function(struct cell_context *cell,
+ const uint facing,
+ struct spe_function *f)
{
const struct pipe_depth_stencil_alpha_state *dsa = cell->depth_stencil;
const struct pipe_blend_state *blend = cell->blend;
if (cell->debug_flags & CELL_DEBUG_ASM) {
spe_print_code(f, true);
spe_indent(f, 8);
- spe_comment(f, -4, facing == CELL_FACING_FRONT ? "Begin front-facing per-fragment ops": "Begin back-facing per-fragment ops");
+ spe_comment(f, -4, facing == CELL_FACING_FRONT
+ ? "Begin front-facing per-fragment ops"
+ : "Begin back-facing per-fragment ops");
}
spe_allocate_register(f, x_reg);
boolean fbS_reg_set = false, fbZ_reg_set = false;
unsigned int fbS_reg, fbZ_reg = 0;
- spe_comment(f, 0, "Fetching Z/stencil quad from tile");
+ spe_comment(f, 0, "Fetch Z/stencil quad from tile");
/* fetch quad of depth/stencil values from tile at (x,y) */
/* Load: fbZS_reg = memory[depth_tile_reg + offset_reg] */
* buffer must be maintained).
*/
switch(zs_format) {
+ case PIPE_FORMAT_S8Z24_UNORM: /* fall through */
+ case PIPE_FORMAT_X8Z24_UNORM:
+ /* Pull out both Z and stencil */
+ setup_optional_register(f, &fbZ_reg_set, &fbZ_reg);
+ setup_optional_register(f, &fbS_reg_set, &fbS_reg);
- case PIPE_FORMAT_S8Z24_UNORM: /* fall through */
- case PIPE_FORMAT_X8Z24_UNORM:
- /* Pull out both Z and stencil */
- setup_optional_register(f, &fbZ_reg_set, &fbZ_reg);
- setup_optional_register(f, &fbS_reg_set, &fbS_reg);
+ /* four 24-bit Z values in the low-order bits */
+ spe_and_uint(f, fbZ_reg, fbZS_reg, 0x00ffffff);
- /* four 24-bit Z values in the low-order bits */
- spe_and_uint(f, fbZ_reg, fbZS_reg, 0x00ffffff);
-
- /* Incoming fragZ_reg value is a float in 0.0...1.0; convert
- * to a 24-bit unsigned integer
- */
- spe_cfltu(f, fragZ_reg, fragZ_reg, 32);
- spe_rotmi(f, fragZ_reg, fragZ_reg, -8);
+ /* Incoming fragZ_reg value is a float in 0.0...1.0; convert
+ * to a 24-bit unsigned integer
+ */
+ spe_cfltu(f, fragZ_reg, fragZ_reg, 32);
+ spe_rotmi(f, fragZ_reg, fragZ_reg, -8);
- /* four 8-bit stencil values in the high-order bits */
- spe_rotmi(f, fbS_reg, fbZS_reg, -24);
+ /* four 8-bit stencil values in the high-order bits */
+ spe_rotmi(f, fbS_reg, fbZS_reg, -24);
break;
- case PIPE_FORMAT_Z24S8_UNORM: /* fall through */
- case PIPE_FORMAT_Z24X8_UNORM:
- setup_optional_register(f, &fbZ_reg_set, &fbZ_reg);
- setup_optional_register(f, &fbS_reg_set, &fbS_reg);
+ case PIPE_FORMAT_Z24S8_UNORM: /* fall through */
+ case PIPE_FORMAT_Z24X8_UNORM:
+ setup_optional_register(f, &fbZ_reg_set, &fbZ_reg);
+ setup_optional_register(f, &fbS_reg_set, &fbS_reg);
+
+ /* shift by 8 to get the upper 24-bit values */
+ spe_rotmi(f, fbS_reg, fbZS_reg, -8);
+
+ /* Incoming fragZ_reg value is a float in 0.0...1.0; convert
+ * to a 24-bit unsigned integer
+ */
+ spe_cfltu(f, fragZ_reg, fragZ_reg, 32);
+ spe_rotmi(f, fragZ_reg, fragZ_reg, -8);
- /* shift by 8 to get the upper 24-bit values */
- spe_rotmi(f, fbS_reg, fbZS_reg, -8);
+ /* 8-bit stencil in the low-order bits - mask them out */
+ spe_and_uint(f, fbS_reg, fbZS_reg, 0x000000ff);
+ break;
- /* Incoming fragZ_reg value is a float in 0.0...1.0; convert
- * to a 24-bit unsigned integer
- */
- spe_cfltu(f, fragZ_reg, fragZ_reg, 32);
- spe_rotmi(f, fragZ_reg, fragZ_reg, -8);
+ case PIPE_FORMAT_Z32_UNORM:
+ setup_optional_register(f, &fbZ_reg_set, &fbZ_reg);
+ /* Copy over 4 32-bit values */
+ spe_move(f, fbZ_reg, fbZS_reg);
- /* 8-bit stencil in the low-order bits - mask them out */
- spe_and_uint(f, fbS_reg, fbZS_reg, 0x000000ff);
+ /* Incoming fragZ_reg value is a float in 0.0...1.0; convert
+ * to a 32-bit unsigned integer
+ */
+ spe_cfltu(f, fragZ_reg, fragZ_reg, 32);
+ /* No stencil, so can't do anything there */
break;
- case PIPE_FORMAT_Z32_UNORM:
- setup_optional_register(f, &fbZ_reg_set, &fbZ_reg);
- /* Copy over 4 32-bit values */
- spe_move(f, fbZ_reg, fbZS_reg);
+ case PIPE_FORMAT_Z16_UNORM:
+ /* XXX Not sure this is correct, but it was here before, so we're
+ * going with it for now
+ */
+ setup_optional_register(f, &fbZ_reg_set, &fbZ_reg);
+ /* Copy over 4 32-bit values */
+ spe_move(f, fbZ_reg, fbZS_reg);
- /* Incoming fragZ_reg value is a float in 0.0...1.0; convert
- * to a 32-bit unsigned integer
- */
- spe_cfltu(f, fragZ_reg, fragZ_reg, 32);
- /* No stencil, so can't do anything there */
+ /* Incoming fragZ_reg value is a float in 0.0...1.0; convert
+ * to a 16-bit unsigned integer
+ */
+ spe_cfltu(f, fragZ_reg, fragZ_reg, 32);
+ spe_rotmi(f, fragZ_reg, fragZ_reg, -16);
+ /* No stencil */
break;
- case PIPE_FORMAT_Z16_UNORM:
- /* XXX Not sure this is correct, but it was here before, so we're
- * going with it for now
- */
- setup_optional_register(f, &fbZ_reg_set, &fbZ_reg);
- /* Copy over 4 32-bit values */
- spe_move(f, fbZ_reg, fbZS_reg);
-
- /* Incoming fragZ_reg value is a float in 0.0...1.0; convert
- * to a 16-bit unsigned integer
- */
- spe_cfltu(f, fragZ_reg, fragZ_reg, 32);
- spe_rotmi(f, fragZ_reg, fragZ_reg, -16);
- /* No stencil */
-
- default:
- ASSERT(0); /* invalid format */
+ default:
+ ASSERT(0); /* invalid format */
}
/* If stencil is enabled, use the stencil-specific code
* gen_stencil_depth_test() function must ignore the
* fbZ_reg register if depth is not enabled.
*/
- write_depth_stencil = gen_stencil_depth_test(f, dsa, facing, mask_reg, fragZ_reg, fbZ_reg, fbS_reg);
+ write_depth_stencil = gen_stencil_depth_test(f, dsa, facing,
+ mask_reg, fragZ_reg,
+ fbZ_reg, fbS_reg);
}
else if (dsa->depth.enabled) {
int zmask_reg = spe_allocate_available_register(f);
ASSERT(fbZ_reg_set);
spe_comment(f, 0, "Perform depth test");
- write_depth_stencil = gen_depth_test(f, dsa, mask_reg, fragZ_reg, fbZ_reg, zmask_reg);
+ write_depth_stencil = gen_depth_test(f, dsa, mask_reg, fragZ_reg,
+ fbZ_reg, zmask_reg);
spe_release_register(f, zmask_reg);
}
else {
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