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add tx_rt_float

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This commit is contained in:
Zack Buhman 2025-11-08 17:45:35 -06:00
parent 0272ee93d0
commit 940b0cd43d
7 changed files with 412 additions and 0 deletions
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62
src/r500/indirect_buffer.c
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@ -567,6 +567,55 @@ void ib_texture__1(int reloc_index,
TU(reloc_index * 4); // index into relocs array TU(reloc_index * 4); // index into relocs array
} }
void ib_texture__1_float32(int reloc_index,
int width, int height,
int macrotile, int microtile,
int clamp)
{
//////////////////////////////////////////////////////////////////////////////
// TX
//////////////////////////////////////////////////////////////////////////////
T0V(TX_INVALTAGS, 0x00000000);
T0V(TX_ENABLE
, TX_ENABLE__TEX_0_ENABLE__ENABLE);
T0V(TX_FILTER0_0
, TX_FILTER0__CLAMP_S(clamp)
| TX_FILTER0__CLAMP_T(clamp)
| TX_FILTER0__MAG_FILTER__POINT
| TX_FILTER0__MIN_FILTER__POINT
);
T0V(TX_FILTER1_0
, TX_FILTER1__LOD_BIAS(1)
| TX_FILTER1__BORDER_FIX(1)
);
T0V(TX_BORDER_COLOR_0, 0);
T0V(TX_FORMAT0_0
, TX_FORMAT0__TXWIDTH(width - 1)
| TX_FORMAT0__TXHEIGHT(height - 1)
);
T0V(TX_FORMAT1_0
, TX_FORMAT1__TXFORMAT__TX_FMT_32F_32F_32F_32F
| TX_FORMAT1__SEL_ALPHA(3)
| TX_FORMAT1__SEL_RED(0)
| TX_FORMAT1__SEL_GREEN(1)
| TX_FORMAT1__SEL_BLUE(2)
| TX_FORMAT1__TEX_COORD_TYPE__2D
);
T0V(TX_FORMAT2_0, 0);
T0V(TX_OFFSET_0
, TX_OFFSET__MACRO_TILE(macrotile)
| TX_OFFSET__MICRO_TILE(microtile)
);
T3(_NOP, 0);
TU(reloc_index * 4); // index into relocs array
}
void ib_vap_pvs(struct shader_offset * offset) void ib_vap_pvs(struct shader_offset * offset)
{ {
const int instruction_size = 4 * 4; // bytes const int instruction_size = 4 * 4; // bytes
@ -650,6 +699,19 @@ void ib_vap_pvs_const_offset(const float * consts, int size, int offset)
TF(consts[i]); TF(consts[i]);
} }
void ib_ga_consts(const float * consts, int consts_length, int index)
{
assert(consts_length % 4 == 0);
T0V(GA_US_VECTOR_INDEX
, GA_US_VECTOR_INDEX__INDEX(index)
| GA_US_VECTOR_INDEX__TYPE(1)
);
T0_ONE_REG(GA_US_VECTOR_DATA, (consts_length - 1));
for (int i = 0; i < consts_length; i++)
TF(consts[i]);
}
void ib_vap_stream_cntl__2() void ib_vap_stream_cntl__2()
{ {
////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////

5
src/r500/indirect_buffer.h
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@ -64,10 +64,15 @@ void ib_texture__1(int reloc_index,
int width, int height, int width, int height,
int macrotile, int microtile, int macrotile, int microtile,
int clamp); int clamp);
void ib_texture__1_float32(int reloc_index,
int width, int height,
int macrotile, int microtile,
int clamp);
void ib_vap_pvs(struct shader_offset * offset); void ib_vap_pvs(struct shader_offset * offset);
void ib_ga_us(struct shader_offset * offset); void ib_ga_us(struct shader_offset * offset);
void ib_vap_pvs_const_cntl(const float * consts, int size); void ib_vap_pvs_const_cntl(const float * consts, int size);
void ib_vap_pvs_const_offset(const float * consts, int size, int offset); void ib_vap_pvs_const_offset(const float * consts, int size, int offset);
void ib_ga_consts(const float * consts, int consts_length, int index);
void ib_vap_stream_cntl__2(); void ib_vap_stream_cntl__2();
void ib_vap_stream_cntl__3(); void ib_vap_stream_cntl__3();
void ib_vap_stream_cntl__32(); void ib_vap_stream_cntl__32();

335
src/tx_rt_float.cpp Normal file
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@ -0,0 +1,335 @@
#include <assert.h>
#include <errno.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include <fcntl.h>
#include <sys/mman.h>
#include "r500/3d_registers.h"
#include "r500/3d_registers_undocumented.h"
#include "r500/3d_registers_bits.h"
#include "r500/indirect_buffer.h"
#include "r500/shader.h"
#include "r500/display_controller.h"
#include "drm/buffer.h"
#include "drm/drm.h"
#include "math/float_types.hpp"
#include "math/transform.hpp"
#include "math/constants.hpp"
#include "../model/model2.h"
#include "../model/plane.h"
#define TEXTURE_TILE_SHADER 0
const char * vertex_shader_paths[] = {
"tx_rt_float.vs.bin",
};
const int vertex_shader_paths_length = (sizeof (vertex_shader_paths)) / (sizeof (vertex_shader_paths[0]));
const char * fragment_shader_paths[] = {
"tx_rt_float.fs.bin",
};
const int fragment_shader_paths_length = (sizeof (fragment_shader_paths)) / (sizeof (fragment_shader_paths[0]));
#define PARTICLE_TEXTURE 0
const char * textures[] = {
"../texture/butterfly_1024x1024_rgba8888.data",
};
const int textures_length = (sizeof (textures)) / (sizeof (textures[0]));
struct shaders {
struct shader_offset * vertex;
struct shader_offset * fragment;
int vertex_length;
int fragment_length;
};
const int floatbuffer_width = 64;
const int floatbuffer_height = 64;
int _floatbuffer(const shaders& shaders,
int input_reloc_index,
int output_reloc_index)
{
int viewport_width = floatbuffer_width;
int viewport_height = floatbuffer_height;
int texture_width = floatbuffer_width;
int texture_height = floatbuffer_height;
float vx = ((float)viewport_width) * 0.5f;
float vy = ((float)viewport_height) * 0.5f;
float tx = 0.5f / ((float)texture_width);
float ty = 0.5f / ((float)texture_height);
ib_ix = 0;
ib_generic_initialization();
printf("vp %d %d \n", viewport_width, viewport_height);
T0V(SC_SCISSOR0
, SC_SCISSOR0__XS0(0)
| SC_SCISSOR0__YS0(0)
);
T0V(SC_SCISSOR1
, SC_SCISSOR1__XS1(viewport_width - 1)
| SC_SCISSOR1__YS1(viewport_height - 1)
);
T0Vf(VAP_VPORT_XSCALE, (float)viewport_width);
T0Vf(VAP_VPORT_YSCALE, (float)viewport_height);
ib_colorbuffer(output_reloc_index, viewport_width, 0, 0); // macrotile, microtile
T0V(RB3D_COLORPITCH0
, RB3D_COLORPITCH__COLORPITCH(viewport_width >> 1)
| RB3D_COLORPITCH__COLORTILE(0)
| RB3D_COLORPITCH__COLORMICROTILE(0)
| RB3D_COLORPITCH__COLORFORMAT__ARGB32323232
);
T0V(US_OUT_FMT_0
, US_OUT_FMT__OUT_FMT(21) // C4_32_FP
| US_OUT_FMT__C0_SEL__RED
| US_OUT_FMT__C1_SEL__GREEN
| US_OUT_FMT__C2_SEL__BLUE
| US_OUT_FMT__C3_SEL__ALPHA
| US_OUT_FMT__OUT_SIGN(0)
);
T0V(US_OUT_FMT_1
, US_OUT_FMT__OUT_FMT(15) // render target is not used
);
T0V(US_OUT_FMT_2
, US_OUT_FMT__OUT_FMT(15) // render target is not used
);
T0V(US_OUT_FMT_3
, US_OUT_FMT__OUT_FMT(15) // render target is not used
);
// shaders
load_pvs_shaders(shaders.vertex, shaders.vertex_length);
load_us_shaders(shaders.fragment, shaders.fragment_length);
// GA
T0V(GB_ENABLE
, 0
);
//////////////////////////////////////////////////////////////////////////////
// RS
//////////////////////////////////////////////////////////////////////////////
ib_rs_instructions(1);
//////////////////////////////////////////////////////////////////////////////
// VAP OUT
//////////////////////////////////////////////////////////////////////////////
T0V(VAP_OUT_VTX_FMT_0
, VAP_OUT_VTX_FMT_0__VTX_POS_PRESENT(1)
);
T0V(VAP_OUT_VTX_FMT_1
, VAP_OUT_VTX_FMT_1__TEX_0_COMP_CNT(4)
);
//
T0V(ZB_CNTL, 0);
T0V(ZB_ZSTENCILCNTL, 0);
//
int macrotile = 0;
int microtile = 0;
int clamp = 2; // clamp to [0.0, 1.0]
ib_texture__1_float32(input_reloc_index,
texture_width, texture_height,
macrotile, microtile,
clamp);
ib_vap_stream_cntl__2();
T0V(US_PIXSIZE
, US_PIXSIZE__PIX_SIZE(1)
);
ib_ga_us(&shaders.fragment[TEXTURE_TILE_SHADER]);
ib_vap_pvs(&shaders.vertex[TEXTURE_TILE_SHADER]);
const float vertex_consts[] = {
tx, ty, 0, 0,
};
const int vertex_consts_size = (sizeof (vertex_consts));
ib_vap_pvs_const_cntl(vertex_consts, vertex_consts_size);
// fragment constants
const float fragment_consts[] = {
1234.0f, 0, 0, 0,
};
int fragment_consts_length = (sizeof (fragment_consts)) / (sizeof (fragment_consts[0]));
ib_ga_consts(fragment_consts, fragment_consts_length, 0);
//////////////////////////////////////////////////////////////////////////////
// VAP
//////////////////////////////////////////////////////////////////////////////
T0V(VAP_CLIP_CNTL
, VAP_CLIP_CNTL__CLIP_DISABLE(1)
);
T0V(VAP_VTE_CNTL
, VAP_VTE_CNTL__VPORT_X_SCALE_ENA(1)
| VAP_VTE_CNTL__VPORT_Y_SCALE_ENA(1)
| VAP_VTE_CNTL__VTX_XY_FMT(1) // disable W division
| VAP_VTE_CNTL__VTX_Z_FMT(1) // disable W division
);
T0V(VAP_CNTL_STATUS
, VAP_CNTL_STATUS__PVS_BYPASS(0)
);
//////////////////////////////////////////////////////////////////////////////
// 3D_DRAW
//////////////////////////////////////////////////////////////////////////////
const int dwords_per_vtx = 2;
T0V(VAP_VTX_SIZE
, VAP_VTX_SIZE__DWORDS_PER_VTX(dwords_per_vtx)
);
const float vertices[] = {
0.0f, 0.0f,
1.0f, 0.0f,
1.0f, 1.0f,
0.0f, 1.0f,
};
const int vertex_count = 4;
T3(_3D_DRAW_IMMD_2, (1 + vertex_count * dwords_per_vtx) - 1);
TU( VAP_VF_CNTL__PRIM_TYPE(5) // triangle fan
| VAP_VF_CNTL__PRIM_WALK(3)
| VAP_VF_CNTL__INDEX_SIZE(0)
| VAP_VF_CNTL__VTX_REUSE_DIS(0)
| VAP_VF_CNTL__DUAL_INDEX_MODE(0)
| VAP_VF_CNTL__USE_ALT_NUM_VERTS(0)
| VAP_VF_CNTL__NUM_VERTICES(vertex_count)
);
for (int i = 0; i < vertex_count * 2; i++) {
TF(vertices[i]);
}
return ib_ix;
}
void floatbuffer_data(void * ptr, int size)
{
float * f32 = (float*)ptr;
int vector_length = size / (4 * 4);
int offset = 16384;
for (int i = 0; i < vector_length; i++) {
f32[i * 4 + 0] = offset--;
f32[i * 4 + 1] = offset--;
f32[i * 4 + 2] = offset--;
f32[i * 4 + 3] = offset--;
}
}
void floatbuffer_compare(void * a, void * b, int size)
{
float * a_f32 = (float*)a;
float * b_f32 = (float*)b;
int vector_length = size / (4 * 4);
int offset = 1;
for (int i = 0; i < vector_length; i++) {
if ( (a_f32[i * 4 + 0] != b_f32[i * 4 + 0])
|| (a_f32[i * 4 + 1] != b_f32[i * 4 + 1])
|| (a_f32[i * 4 + 2] != b_f32[i * 4 + 2])
|| (a_f32[i * 4 + 3] != b_f32[i * 4 + 3])) {
printf("a[%d] = [% 2.02f % 2.02f % 2.02f % 2.02f] ; ", i,
a_f32[i * 4 + 0], a_f32[i * 4 + 1], a_f32[i * 4 + 2], a_f32[i * 4 + 3]);
printf("b[%d] = [% 2.02f % 2.02f % 2.02f % 2.02f] \n", i,
b_f32[i * 4 + 0], b_f32[i * 4 + 1], b_f32[i * 4 + 2], b_f32[i * 4 + 3]);
}
}
}
int main()
{
struct shaders shaders = {
.vertex = load_shaders(vertex_shader_paths, vertex_shader_paths_length),
.fragment = load_shaders(fragment_shader_paths, fragment_shader_paths_length),
.vertex_length = vertex_shader_paths_length,
.fragment_length = fragment_shader_paths_length,
};
void * rmmio = map_pci_resource2();
int fd = open("/dev/dri/card0", O_RDWR | O_CLOEXEC);
assert(fd != -1);
const int colorbuffer_size = 1600 * 1200 * 4;
const int floatbuffer_size = floatbuffer_width * floatbuffer_height * 4 * 4;
const int floatbuffer_count = 2;
int colorbuffer_handle[2];
int zbuffer_handle;
int * texturebuffer_handle;
int flush_handle;
int floatbuffer_handle[floatbuffer_count];
void * colorbuffer_ptr[2];
void * floatbuffer_ptr[floatbuffer_count];
void * zbuffer_ptr;
// colorbuffer
colorbuffer_handle[0] = create_buffer(fd, colorbuffer_size, &colorbuffer_ptr[0]);
colorbuffer_handle[1] = create_buffer(fd, colorbuffer_size, &colorbuffer_ptr[1]);
zbuffer_handle = create_buffer(fd, colorbuffer_size, &zbuffer_ptr);
flush_handle = create_flush_buffer(fd);
texturebuffer_handle = load_textures(fd, textures, textures_length);
floatbuffer_handle[0] = create_buffer(fd, floatbuffer_size, &floatbuffer_ptr[0]);
floatbuffer_handle[1] = create_buffer(fd, floatbuffer_size, &floatbuffer_ptr[1]);
fprintf(stderr, "colorbuffer handle[0] %d\n", colorbuffer_handle[0]);
fprintf(stderr, "colorbuffer handle[1] %d\n", colorbuffer_handle[1]);
fprintf(stderr, "floatbuffer handle[0] %d\n", floatbuffer_handle[0]);
fprintf(stderr, "floatbuffer handle[1] %d\n", floatbuffer_handle[1]);
fprintf(stderr, "zbuffer handle %d\n", zbuffer_handle);
int colorbuffer_ix = 0;
floatbuffer_data(floatbuffer_ptr[0], floatbuffer_size);
while (true) {
int ib_dwords = _floatbuffer(shaders,
TEXTUREBUFFER_RELOC_INDEX + 0, // input
COLORBUFFER_RELOC_INDEX); // output
int ret = drm_radeon_cs(fd,
floatbuffer_handle[1],
zbuffer_handle,
flush_handle,
floatbuffer_handle,
floatbuffer_count,
ib_dwords);
if (ret == -1)
break;
break;
}
floatbuffer_compare(floatbuffer_ptr[0], floatbuffer_ptr[1], floatbuffer_size);
close(fd);
}

8
src/tx_rt_float.fs.asm Normal file
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@ -0,0 +1,8 @@
TEX TEX_SEM_WAIT TEX_SEM_ACQUIRE
temp[0].rgba = LD tex[0].rgba temp[0].rgaa ;
OUT TEX_SEM_WAIT
src0.a = temp[0],
src0.rgb = temp[0] :
out[0].a = MAX src0.a src0.a ,
out[0].rgb = MAX src0.rgb src0.rgb ;

BIN
src/tx_rt_float.fs.bin Normal file
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2
src/tx_rt_float.vs.asm Normal file
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@ -0,0 +1,2 @@
out[0].xyzw = VE_ADD input[0].xyzw input[0].0000 ;
out[1].xyzw = VE_ADD input[0].xy00 const[0].0000 ;

BIN
src/tx_rt_float.vs.bin Normal file
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