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comp: Move VIVE distortion properties to UBO.

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This commit is contained in:
Lubosz Sarnecki 2019-03-14 19:38:09 +01:00
parent 6f5ef7a0cb
commit 52e11ac4c5
3 changed files with 92 additions and 74 deletions
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58
src/xrt/compositor/main/comp_distortion.c
View file

@ -55,8 +55,7 @@ comp_distortion_init_pipeline_layout(struct comp_distortion *d);
static void
comp_distortion_init_pipeline(struct comp_distortion *d,
VkRenderPass render_pass,
VkPipelineCache pipeline_cache,
enum xrt_distortion_model distortion_model);
VkPipelineCache pipeline_cache);
static VkWriteDescriptorSet
comp_distortion_get_uniform_write_descriptor_set(struct comp_distortion *d,
@ -175,6 +174,8 @@ comp_distortion_init(struct comp_distortion *d,
{
d->vk = &c->vk;
d->distortion_model = distortion_model;
d->ubo_vp_data[0].flip_y = flip_y;
d->ubo_vp_data[1].flip_y = flip_y;
@ -182,8 +183,7 @@ comp_distortion_init(struct comp_distortion *d,
comp_distortion_update_uniform_buffer_warp(d, c);
comp_distortion_init_descriptor_set_layout(d);
comp_distortion_init_pipeline_layout(d);
comp_distortion_init_pipeline(d, render_pass, pipeline_cache,
distortion_model);
comp_distortion_init_pipeline(d, render_pass, pipeline_cache);
comp_distortion_init_descriptor_sets(d, descriptor_pool);
}
@ -207,8 +207,7 @@ comp_distortion_destroy(struct comp_distortion *d)
static void
comp_distortion_init_pipeline(struct comp_distortion *d,
VkRenderPass render_pass,
VkPipelineCache pipeline_cache,
enum xrt_distortion_model distortion_model)
VkPipelineCache pipeline_cache)
{
struct vk_bundle *vk = d->vk;
VkResult ret;
@ -276,12 +275,10 @@ comp_distortion_init_pipeline(struct comp_distortion *d,
.pDynamicStates = dynamic_states,
};
const uint32_t *fragment_shader_code;
size_t fragment_shader_size;
switch (distortion_model) {
switch (d->distortion_model) {
case XRT_DISTORTION_MODEL_NONE:
fragment_shader_code = shaders_none_frag;
fragment_shader_size = sizeof(shaders_none_frag);
@ -541,11 +538,34 @@ static void
comp_distortion_update_uniform_buffer_warp(struct comp_distortion *d,
struct comp_compositor *c)
{
// clang-format off
switch (d->distortion_model) {
case XRT_DISTORTION_MODEL_VIVE:
/*
* VIVE fragment shader
*/
d->ubo_vive.aspect_x_over_y = c->xdev->distortion.vive.aspect_x_over_y;
d->ubo_vive.grow_for_undistort = c->xdev->distortion.vive.grow_for_undistort;
for (uint32_t i = 0; i < 2; i++)
d->ubo_vive.undistort_r2_cutoff[i] = c->xdev->distortion.vive.undistort_r2_cutoff[i];
for (uint32_t i = 0; i < 2; i++)
for (uint32_t j = 0; j < 2; j++)
d->ubo_vive.center[i][j] = c->xdev->distortion.vive.center[i][j];
for (uint32_t i = 0; i < 2; i++)
for (uint32_t j = 0; j < 3; j++)
for (uint32_t k = 0; k < 3; k++)
d->ubo_vive.coefficients[i][j][k] = c->xdev->distortion.vive.coefficients[i][j][k];
memcpy(d->ubo_handle.mapped, &d->ubo_vive, sizeof(d->ubo_vive));
break;
case XRT_DISTORTION_MODEL_PANOTOOLS:
default:
/*
* Pano vision fragment shader
*/
// clang-format off
d->ubo_pano.hmd_warp_param[0] = c->xdev->distortion.pano.distortion_k[0];
d->ubo_pano.hmd_warp_param[1] = c->xdev->distortion.pano.distortion_k[1];
d->ubo_pano.hmd_warp_param[2] = c->xdev->distortion.pano.distortion_k[2];
@ -563,9 +583,9 @@ comp_distortion_update_uniform_buffer_warp(struct comp_distortion *d,
d->ubo_pano.warp_scale = c->xdev->distortion.pano.warp_scale;
memcpy(d->ubo_handle.mapped, &d->ubo_pano, sizeof(d->ubo_pano));
}
// clang-format on
/*
* Common vertex shader stuff.
*/
@ -683,9 +703,19 @@ comp_distortion_init_uniform_buffer(struct comp_distortion *d,
memory_property_flags |= VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
memory_property_flags |= VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
// Warp UBO in deferred fragment shader
// distortion ubo
VkDeviceSize ubo_size;
switch (d->distortion_model) {
case XRT_DISTORTION_MODEL_PANOTOOLS:
ubo_size = sizeof(d->ubo_pano);
break;
case XRT_DISTORTION_MODEL_VIVE: ubo_size = sizeof(d->ubo_vive); break;
default: ubo_size = sizeof(d->ubo_pano);
}
ret = _create_buffer(vk, usage_flags, memory_property_flags,
&d->ubo_handle, sizeof(d->ubo_pano), NULL);
&d->ubo_handle, ubo_size, NULL);
if (ret != VK_SUCCESS) {
VK_DEBUG(vk, "Failed to create warp ubo buffer!");
}

11
src/xrt/compositor/main/comp_distortion.h
View file

@ -56,6 +56,8 @@ struct comp_distortion
struct comp_uniform_buffer ubo_handle;
struct comp_uniform_buffer ubo_viewport_handles[2];
enum xrt_distortion_model distortion_model;
struct
{
float hmd_warp_param[4];
@ -65,6 +67,15 @@ struct comp_distortion
float warp_scale;
} ubo_pano;
struct
{
float coefficients[2][3][4];
float center[2][4];
float undistort_r2_cutoff[4];
float aspect_x_over_y;
float grow_for_undistort;
} ubo_vive;
struct
{
struct xrt_matrix_2x2 rot;

61
src/xrt/compositor/shaders/vive.frag
View file

@ -5,40 +5,17 @@
// Author: Lubosz Sarnecki <lubosz.sarnecki@collabora.com>
#version 450
// TODO: Don't use hard coded config
float aspect_x_over_y = 0.8999999761581421;
float grow_for_undistort = 0.6000000238418579;
vec2 undistort_r2_cutoff = vec2(1.11622154712677, 1.101870775222778);
vec2 center[2] = vec2[](
vec2(0.08946027017045266, -0.009002181016260827),
vec2(-0.08933516629552526, -0.006014565287238661)
);
vec3 coeffs[2][3] = {
// left
{
// green
vec3(-0.188236068524731, -0.221086205321053, -0.2537849057915209),
// blue
vec3(-0.07316590815739493, -0.02332400789561968, 0.02469959434698275),
// red
vec3(-0.02223805567703767, -0.04931309279533211, -0.07862881939243466),
},
// right
{
// green
vec3(-0.1906209981894497, -0.2248896677207884, -0.2721364516782803),
// blue
vec3(-0.07346071902951497, -0.02189527566250131, 0.0581378652359256),
// red
vec3(-0.01755850332081247, -0.04517245633373419, -0.0928909347763)
}
};
layout (binding = 0) uniform sampler2D texSampler;
layout (binding = 1, std140) uniform UBO
{
vec4 coeffs[2][3];
vec4 center[2];
vec4 undistort_r2_cutoff;
float aspect_x_over_y;
float grow_for_undistort;
} ubo;
layout (location = 0) in vec2 inUV;
layout (location = 1) flat in int inViewIndex;
@ -49,34 +26,34 @@ void main()
{
const int i = inViewIndex;
const vec2 factor = 0.5 / (1.0 + grow_for_undistort)
* vec2(1.0, aspect_x_over_y);
const vec2 factor = 0.5 / (1.0 + ubo.grow_for_undistort)
* vec2(1.0, ubo.aspect_x_over_y);
vec2 texCoord = 2.0 * inUV - vec2(1.0);
texCoord.y /= aspect_x_over_y;
texCoord -= center[i];
texCoord.y /= ubo.aspect_x_over_y;
texCoord -= ubo.center[i].xy;
float r2 = dot(texCoord, texCoord);
vec3 d_inv = ((r2 * coeffs[i][2] + coeffs[i][1])
* r2 + coeffs[i][0])
vec3 d_inv = ((r2 * ubo.coeffs[i][2].xyz + ubo.coeffs[i][1].xyz)
* r2 + ubo.coeffs[i][0].xyz)
* r2 + vec3(1.0);
const vec3 d = 1.0 / d_inv;
const vec2 offset = vec2(0.5);
vec2 tcR = offset + (texCoord * d.r + center[i]) * factor;
vec2 tcG = offset + (texCoord * d.g + center[i]) * factor;
vec2 tcB = offset + (texCoord * d.b + center[i]) * factor;
vec2 tcR = offset + (texCoord * d.r + ubo.center[i].xy) * factor;
vec2 tcG = offset + (texCoord * d.g + ubo.center[i].xy) * factor;
vec2 tcB = offset + (texCoord * d.b + ubo.center[i].xy) * factor;
vec3 color = vec3(
texture(texSampler, tcR).r,
texture(texSampler, tcG).g,
texture(texSampler, tcB).b);
if (r2 > undistort_r2_cutoff[i]) {
if (r2 > ubo.undistort_r2_cutoff[i]) {
color *= 0.125;
}