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Revert "radeonsi: only set BC_OPTIMIZE_DISABLE when necessary"

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This reverts commit 0543630d0b.

It caused flickering artifacts in Steam games such as Team Fortress 2 or
Left 4 Dead 2.

We could probably only enable this optimization by also making sure the
shader code only uses either SI_PARAM_LINEAR_CENTROID or
SI_PARAM_LINEAR_CENTER, not both. This would probably require a shader
variant.

Sorry I didn't remember this when reviewing the reverted change.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Michel Dänzer
2015-01-13 16:38:52 +09:00
committed by Michel Dänzer
parent a6a75f1286
commit 82b7ee62fc
2 changed files with 6 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/gallium/drivers/radeonsi/si_pipe.h
View File

@@ -169,7 +169,6 @@ struct si_context {
/* shader information */
unsigned sprite_coord_enable;
bool flatshade;
bool bc_optimize_disable;
struct si_descriptors vertex_buffers;
struct si_buffer_resources const_buffers[SI_NUM_SHADERS];
struct si_buffer_resources rw_buffers[SI_NUM_SHADERS];

20
src/gallium/drivers/radeonsi/si_state_shaders.c
View File

@@ -232,7 +232,7 @@ static void si_shader_ps(struct si_shader *shader)
{
struct tgsi_shader_info *info = &shader->selector->info;
struct si_pm4_state *pm4;
unsigned i;
unsigned i, spi_ps_in_control;
unsigned num_sgprs, num_user_sgprs;
unsigned spi_baryc_cntl = 0, spi_ps_input_ena;
uint64_t va;
@@ -267,6 +267,9 @@ static void si_shader_ps(struct si_shader *shader)
}
}
spi_ps_in_control = S_0286D8_NUM_INTERP(shader->nparam) |
S_0286D8_BC_OPTIMIZE_DISABLE(1);
si_pm4_set_reg(pm4, R_0286E0_SPI_BARYC_CNTL, spi_baryc_cntl);
spi_ps_input_ena = shader->spi_ps_input_ena;
/* we need to enable at least one of them, otherwise we hang the GPU */
@@ -281,6 +284,7 @@ static void si_shader_ps(struct si_shader *shader)
si_pm4_set_reg(pm4, R_0286CC_SPI_PS_INPUT_ENA, spi_ps_input_ena);
si_pm4_set_reg(pm4, R_0286D0_SPI_PS_INPUT_ADDR, spi_ps_input_ena);
si_pm4_set_reg(pm4, R_0286D8_SPI_PS_IN_CONTROL, spi_ps_in_control);
si_pm4_set_reg(pm4, R_028710_SPI_SHADER_Z_FORMAT, shader->spi_shader_z_format);
si_pm4_set_reg(pm4, R_028714_SPI_SHADER_COL_FORMAT,
@@ -661,10 +665,6 @@ bcolor:
}
}
si_pm4_set_reg(pm4, R_0286D8_SPI_PS_IN_CONTROL,
S_0286D8_NUM_INTERP(ps->nparam) |
S_0286D8_BC_OPTIMIZE_DISABLE(sctx->bc_optimize_disable));
si_pm4_set_state(sctx, spi, pm4);
}
@@ -710,7 +710,6 @@ void si_update_shaders(struct si_context *sctx)
{
struct pipe_context *ctx = (struct pipe_context*)sctx;
struct si_state_rasterizer *rs = sctx->queued.named.rasterizer;
bool bc_optimize_disable;
if (sctx->gs_shader) {
si_shader_select(ctx, sctx->gs_shader);
@@ -775,18 +774,11 @@ void si_update_shaders(struct si_context *sctx)
si_pm4_bind_state(sctx, ps, sctx->ps_shader->current->pm4);
/* Whether CENTER != CENTROID. */
bc_optimize_disable = sctx->framebuffer.nr_samples > 1 &&
rs->multisample_enable &&
sctx->ps_shader->info.uses_centroid;
if (si_pm4_state_changed(sctx, ps) || si_pm4_state_changed(sctx, vs) ||
sctx->sprite_coord_enable != rs->sprite_coord_enable ||
sctx->flatshade != rs->flatshade ||
sctx->bc_optimize_disable != bc_optimize_disable) {
sctx->flatshade != rs->flatshade) {
sctx->sprite_coord_enable = rs->sprite_coord_enable;
sctx->flatshade = rs->flatshade;
sctx->bc_optimize_disable = bc_optimize_disable;
si_update_spi_map(sctx);
}