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broadcom/vc5: Start hooking up multiple render targets support.

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We now emit as many TLB color writes as there are color buffers.
This commit is contained in:
Eric Anholt
2017-10-02 16:43:33 -07:00
parent f0ee7d6ba8
commit dc25a83a7a
3 changed files with 48 additions and 17 deletions
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48
src/broadcom/compiler/nir_to_vir.c
View File

@@ -1070,24 +1070,26 @@ emit_frag_end(struct v3d_compile *c)
* uniform setup
*/
if (c->output_color_var) {
nir_variable *var = c->output_color_var;
for (int rt = 0; rt < c->fs_key->nr_cbufs; rt++) {
if (!c->output_color_var[rt])
continue;
nir_variable *var = c->output_color_var[rt];
struct qreg *color = &c->outputs[var->data.driver_location * 4];
int num_components = glsl_get_vector_elements(var->type);
uint32_t conf = ~0;
uint32_t conf = 0xffffff00;
struct qinst *inst;
conf |= TLB_SAMPLE_MODE_PER_PIXEL;
conf |= (7 - rt) << TLB_RENDER_TARGET_SHIFT;
assert(num_components != 0);
switch (glsl_get_base_type(var->type)) {
case GLSL_TYPE_UINT:
case GLSL_TYPE_INT:
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);
conf |= TLB_TYPE_I32_COLOR;
conf |= ((num_components - 1) <<
TLB_VEC_SIZE_MINUS_1_SHIFT);
inst = vir_MOV_dest(c, vir_reg(QFILE_TLBU, 0), color[0]);
vir_set_cond(inst, discard_cond);
@@ -1107,13 +1109,26 @@ emit_frag_end(struct v3d_compile *c)
struct qreg b = color[2];
struct qreg a = color[3];
if (c->fs_key->swap_color_rb) {
conf |= TLB_TYPE_F16_COLOR;
conf |= TLB_F16_SWAP_HI_LO;
if (num_components >= 3)
conf |= TLB_VEC_SIZE_4_F16;
else
conf |= TLB_VEC_SIZE_2_F16;
if (c->fs_key->swap_color_rb & (1 << rt)) {
r = color[2];
b = color[0];
}
inst = vir_VFPACK_dest(c, vir_reg(QFILE_TLB, 0), r, g);
if (conf != ~0) {
inst->dst.file = QFILE_TLBU;
inst->src[vir_get_implicit_uniform_src(inst)] =
vir_uniform_ui(c, conf);
}
vir_set_cond(inst, discard_cond);
inst = vir_VFPACK_dest(c, vir_reg(QFILE_TLB, 0), b, a);
vir_set_cond(inst, discard_cond);
break;
@@ -1421,8 +1436,17 @@ ntq_setup_outputs(struct v3d_compile *c)
if (c->s->stage == MESA_SHADER_FRAGMENT) {
switch (var->data.location) {
case FRAG_RESULT_COLOR:
c->output_color_var[0] = var;
c->output_color_var[1] = var;
c->output_color_var[2] = var;
c->output_color_var[3] = var;
break;
case FRAG_RESULT_DATA0:
c->output_color_var = var;
case FRAG_RESULT_DATA1:
case FRAG_RESULT_DATA2:
case FRAG_RESULT_DATA3:
c->output_color_var[var->data.location -
FRAG_RESULT_DATA0] = var;
break;
case FRAG_RESULT_DEPTH:
c->output_position_index = loc;

5
src/broadcom/compiler/v3d_compiler.h
View File

@@ -318,7 +318,8 @@ struct v3d_fs_key {
bool sample_alpha_to_coverage;
bool sample_alpha_to_one;
bool clamp_color;
bool swap_color_rb;
uint8_t nr_cbufs;
uint8_t swap_color_rb;
uint8_t alpha_test_func;
uint8_t logicop_func;
uint32_t point_sprite_mask;
@@ -490,7 +491,7 @@ struct v3d_compile {
uint32_t num_uniforms;
uint32_t num_outputs;
uint32_t output_position_index;
nir_variable *output_color_var;
nir_variable *output_color_var[4];
uint32_t output_point_size_index;
uint32_t output_sample_mask_index;

12
src/gallium/drivers/vc5/vc5_program.c
View File

@@ -357,12 +357,18 @@ vc5_update_compiled_fs(struct vc5_context *vc5, uint8_t prim_mode)
key->alpha_test_func = vc5->zsa->base.alpha.func;
}
if (vc5->framebuffer.cbufs[0]) {
struct pipe_surface *cbuf = vc5->framebuffer.cbufs[0];
/* gl_FragColor's propagation to however many bound color buffers
* there are means that the buffer count needs to be in the key.
*/
key->nr_cbufs = vc5->framebuffer.nr_cbufs;
for (int i = 0; i < key->nr_cbufs; i++) {
struct pipe_surface *cbuf = vc5->framebuffer.cbufs[i];
const struct util_format_description *desc =
util_format_description(cbuf->format);
key->swap_color_rb = desc->swizzle[0] == PIPE_SWIZZLE_Z;
if (desc->swizzle[0] == PIPE_SWIZZLE_Z)
key->swap_color_rb |= 1 << i;
}
if (key->is_points) {