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glTFViewer: replace default texture with an untextured shader (#106) 

This fixes the issue where the default texture wasn't uploading
correctly (due to 3f47729, changes in row pitch validation) by just
removing the broken texture entirely.
This commit is contained in:
Kai Ninomiya 2017-08-09 11:44:48 -07:00 committed by GitHub
parent 741e33c394
commit 3d1154786f
1 changed files with 42 additions and 47 deletions
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79
examples/glTFViewer/glTFViewer.cpp
View File

@ -87,9 +87,7 @@ std::map<std::string, nxt::Buffer> buffers;
std::map<std::string, nxt::CommandBuffer> commandBuffers;
std::map<uint32_t, std::string> slotSemantics = {{0, "POSITION"}, {1, "NORMAL"}, {2, "TEXCOORD_0"}};
nxt::Sampler defaultSampler;
std::map<std::string, nxt::Sampler> samplers;
nxt::TextureView defaultTexture;
std::map<std::string, nxt::TextureView> textures;
tinygltf::Scene scene;
@ -171,6 +169,16 @@ namespace {
const auto& iMaterial = scene.materials.at(iMaterialID);
const auto& iTechnique = scene.techniques.at(iMaterial.technique);
bool hasTexture = false;
std::string iTextureID;
{
auto it = iMaterial.values.find("diffuse");
if (it != iMaterial.values.end() && !it->second.string_value.empty()) {
hasTexture = true;
iTextureID = it->second.string_value;
}
}
auto oVSModule = utils::CreateShaderModule(device, nxt::ShaderStage::Vertex, R"(
#version 450
@ -192,7 +200,7 @@ namespace {
gl_Position = u_transform.modelViewProj * a_position;
})");
auto oFSModule = utils::CreateShaderModule(device, nxt::ShaderStage::Fragment, R"(
auto oFSSourceTextured = R"(
#version 450
layout(set = 0, binding = 1) uniform sampler u_samp;
@ -210,7 +218,24 @@ namespace {
float diffamb = diffuse * 0.85 + 0.15;
vec3 albedo = texture(sampler2D(u_tex, u_samp), v_texcoord).rgb;
fragcolor = vec4(diffamb * albedo, 1);
})");
})";
auto oFSSourceUntextured = R"(
#version 450
layout(location = 0) in vec3 v_normal;
layout(location = 1) in vec2 v_texcoord;
out vec4 fragcolor;
void main() {
const vec3 lightdir = normalize(vec3(-1, -2, 3));
vec3 normal = normalize(v_normal);
float diffuse = abs(dot(lightdir, normal));
float diffamb = diffuse * 0.85 + 0.15;
fragcolor = vec4(vec3(diffamb), 1);
})";
auto oFSModule = utils::CreateShaderModule(device, nxt::ShaderStage::Fragment, hasTexture ? oFSSourceTextured : oFSSourceUntextured);
nxt::InputStateBuilder builder = device.CreateInputStateBuilder();
std::bitset<3> slotsSet;
@ -248,11 +273,15 @@ namespace {
}
auto inputState = builder.GetResult();
auto bindGroupLayout = device.CreateBindGroupLayoutBuilder()
auto bindGroupLayoutBuilder = device.CreateBindGroupLayoutBuilder()
.SetBindingsType(nxt::ShaderStageBit::Vertex, nxt::BindingType::UniformBuffer, 0, 1)
.Clone();
if (hasTexture) {
bindGroupLayoutBuilder
.SetBindingsType(nxt::ShaderStageBit::Fragment, nxt::BindingType::Sampler, 1, 1)
.SetBindingsType(nxt::ShaderStageBit::Fragment, nxt::BindingType::SampledTexture, 2, 1)
.GetResult();
.SetBindingsType(nxt::ShaderStageBit::Fragment, nxt::BindingType::SampledTexture, 2, 1);
}
auto bindGroupLayout = bindGroupLayoutBuilder.GetResult();
auto depthStencilState = device.CreateDepthStencilStateBuilder()
.SetDepthCompareFunction(nxt::CompareFunction::Less)
@ -285,18 +314,11 @@ namespace {
bindGroupBuilder.SetLayout(bindGroupLayout)
.SetUsage(nxt::BindGroupUsage::Frozen)
.SetBufferViews(0, 1, &uniformView);
{
auto it = iMaterial.values.find("diffuse");
if (it != iMaterial.values.end() && !it->second.string_value.empty()) {
const auto& iTextureID = it->second.string_value;
if (hasTexture) {
const auto& textureView = textures[iTextureID];
const auto& iSamplerID = scene.textures[iTextureID].sampler;
bindGroupBuilder.SetSamplers(1, 1, &samplers[iSamplerID]);
bindGroupBuilder.SetTextureViews(2, 1, &textureView);
} else {
bindGroupBuilder.SetSamplers(1, 1, &defaultSampler);
bindGroupBuilder.SetTextureViews(2, 1, &defaultTexture);
}
}
MaterialInfo material = {
@ -310,11 +332,6 @@ namespace {
}
void initSamplers() {
defaultSampler = device.CreateSamplerBuilder()
.SetFilterMode(nxt::FilterMode::Nearest, nxt::FilterMode::Nearest, nxt::FilterMode::Nearest)
// TODO: wrap modes
.GetResult();
for (const auto& s : scene.samplers) {
const auto& iSamplerID = s.first;
const auto& iSampler = s.second;
@ -369,28 +386,6 @@ namespace {
}
void initTextures() {
{
auto oTexture = device.CreateTextureBuilder()
.SetDimension(nxt::TextureDimension::e2D)
.SetExtent(1, 1, 1)
.SetFormat(nxt::TextureFormat::R8G8B8A8Unorm)
.SetMipLevels(1)
.SetAllowedUsage(nxt::TextureUsageBit::TransferDst | nxt::TextureUsageBit::Sampled)
.GetResult();
// TODO: release this texture
uint32_t white = 0xffffffff;
nxt::Buffer staging = utils::CreateFrozenBufferFromData(device, &white, sizeof(white), nxt::BufferUsageBit::TransferSrc);
auto cmdbuf = device.CreateCommandBufferBuilder()
.TransitionTextureUsage(oTexture, nxt::TextureUsageBit::TransferDst)
.CopyBufferToTexture(staging, 0, 0, oTexture, 0, 0, 0, 1, 1, 1, 0)
.GetResult();
queue.Submit(1, &cmdbuf);
oTexture.FreezeUsage(nxt::TextureUsageBit::Sampled);
defaultTexture = oTexture.CreateTextureViewBuilder().GetResult();
}
for (const auto& t : scene.textures) {
const auto& iTextureID = t.first;
const auto& iTexture = t.second;