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broadcom/compiler: Use defines instead of magic values in TLB write setup.

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This commit is contained in:
Eric Anholt
2017-09-28 10:56:47 -07:00
parent c25de31824
commit 84939552d0
1 changed files with 33 additions and 6 deletions
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39
src/broadcom/compiler/nir_to_vir.c
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@@ -986,6 +986,32 @@ ntq_emit_alu(struct v3d_compile *c, nir_alu_instr *instr)
ffs(instr->dest.write_mask) - 1, result);
}
/* Each TLB read/write setup (a render target or depth buffer) takes an 8-bit
* specifier. They come from a register that's preloaded with 0xffffffff
* (0xff gets you normal vec4 f16 RT0 writes), and when one is neaded the low
* 8 bits are shifted off the bottom and 0xff shifted in from the top.
*/
#define TLB_TYPE_F16_COLOR (3 << 6)
#define TLB_TYPE_I32_COLOR (1 << 6)
#define TLB_TYPE_F32_COLOR (0 << 6)
#define TLB_RENDER_TARGET_SHIFT 3 /* Reversed! 7 = RT 0, 0 = RT 7. */
#define TLB_SAMPLE_MODE_PER_SAMPLE (0 << 2)
#define TLB_SAMPLE_MODE_PER_PIXEL (1 << 2)
#define TLB_F16_SWAP_HI_LO (1 << 1)
#define TLB_VEC_SIZE_4_F16 (1 << 0)
#define TLB_VEC_SIZE_2_F16 (0 << 0)
#define TLB_VEC_SIZE_MINUS_1_SHIFT 0
/* Triggers Z/Stencil testing, used when the shader state's "FS modifies Z"
* flag is set.
*/
#define TLB_TYPE_DEPTH ((2 << 6) | (0 << 4))
#define TLB_DEPTH_TYPE_INVARIANT (0 << 2) /* Unmodified sideband input used */
#define TLB_DEPTH_TYPE_PER_PIXEL (1 << 2) /* QPU result used */
/* Stencil is a single 32-bit write. */
#define TLB_TYPE_STENCIL_ALPHA ((2 << 6) | (1 << 4))
static void
emit_frag_end(struct v3d_compile *c)
{
@@ -1008,8 +1034,8 @@ emit_frag_end(struct v3d_compile *c)
inst->src[vir_get_implicit_uniform_src(inst)] =
vir_uniform_ui(c,
(1 << 2) | /* per pixel */
(2 << 6) /* type */ |
TLB_TYPE_DEPTH |
TLB_DEPTH_TYPE_PER_PIXEL |
0xffffff00);
}
@@ -1028,10 +1054,11 @@ emit_frag_end(struct v3d_compile *c)
switch (glsl_get_base_type(var->type)) {
case GLSL_TYPE_UINT:
case GLSL_TYPE_INT:
conf = ((1 << 2) | /* per pixel */
((7 - 0) << 3) | /* rt */
(1 << 6) /* type */ |
(num_components - 1) |
conf = (TLB_TYPE_I32_COLOR |
TLB_SAMPLE_MODE_PER_PIXEL |
((7 - 0) << TLB_RENDER_TARGET_SHIFT) |
((num_components - 1) <<
TLB_VEC_SIZE_MINUS_1_SHIFT) |
0xffffff00);