Transform texture_externals used in a user-defined function
Adds functionality and tests for performing the multiplanar external texture transform on texture_external parameters in user-defined functions. Bug: dawn:1082 Change-Id: I15f23e639a6cd24ed3428055420908f05b69c0c6 Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/70840 Kokoro: Kokoro <noreply+kokoro@google.com> Reviewed-by: Ben Clayton <bclayton@google.com> Commit-Queue: Ben Clayton <bclayton@google.com>
This commit is contained in:
Brandon Jones
Tint LUCI CQ
parent
abf4f17b8e
commit
f71784fc2b
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@ -20,6 +20,7 @@
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#include "src/ast/function.h"
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#include "src/program_builder.h"
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#include "src/sem/call.h"
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#include "src/sem/function.h"
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#include "src/sem/variable.h"
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TINT_INSTANTIATE_TYPEINFO(tint::transform::MultiplanarExternalTexture);
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@ -33,15 +34,26 @@ namespace {
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/// This struct stores symbols for new bindings created as a result of
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/// transforming a texture_external instance.
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struct NewBindingSymbols {
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Symbol ext_tex_params_binding_sym;
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Symbol ext_tex_plane_1_binding_sym;
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Symbol params;
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Symbol plane_0;
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Symbol plane_1;
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};
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} // namespace
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/// State holds the current transform state
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struct MultiplanarExternalTexture::State {
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/// The clone context.
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CloneContext& ctx;
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/// ProgramBuilder for the context
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ProgramBuilder& b;
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/// Desination binding locations for the expanded texture_external provided as
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/// input into the transform.
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const NewBindingPoints* new_binding_points;
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/// Symbol for the ExternalTextureParams struct
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Symbol external_texture_params_struct_sym;
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Symbol params_struct_sym;
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/// Symbol for the textureLoadExternal function
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Symbol texture_load_external_sym;
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@ -52,6 +64,337 @@ struct MultiplanarExternalTexture::State {
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/// Storage for new bindings that have been created corresponding to an
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/// original texture_external binding.
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std::unordered_map<Symbol, NewBindingSymbols> new_binding_symbols;
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/// Constructor
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/// @param context the clone
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/// @param newBindingPoints the input destination binding locations for the
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/// expanded texture_external
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State(CloneContext& context, const NewBindingPoints* newBindingPoints)
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: ctx(context), b(*context.dst), new_binding_points(newBindingPoints) {}
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/// Processes the module
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void Process() {
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auto& sem = ctx.src->Sem();
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// For each texture_external binding, we replace it with a texture_2d<f32>
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// binding and create two additional bindings (one texture_2d<f32> to
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// represent the secondary plane and one uniform buffer for the
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// ExternalTextureParams struct).
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ctx.ReplaceAll([&](const ast::Variable* var) -> const ast::Variable* {
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if (!::tint::Is<ast::ExternalTexture>(var->type)) {
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return nullptr;
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}
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// If the decorations are empty, then this must be a texture_external
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// passed as a function parameter. These variables are transformed
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// elsewhere.
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if (var->decorations.empty()) {
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return nullptr;
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}
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// If we find a texture_external binding, we know we must emit the
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// ExternalTextureParams struct.
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if (!params_struct_sym.IsValid()) {
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createExtTexParamsStruct();
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}
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// The binding points for the newly introduced bindings must have been
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// provided to this transform. We fetch the new binding points by
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// providing the original texture_external binding points into the
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// passed map.
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BindingPoint bp = {var->BindingPoint().group->value,
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var->BindingPoint().binding->value};
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BindingsMap::const_iterator it =
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new_binding_points->bindings_map.find(bp);
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if (it == new_binding_points->bindings_map.end()) {
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b.Diagnostics().add_error(
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diag::System::Transform,
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"missing new binding points for texture_external at binding {" +
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std::to_string(bp.group) + "," + std::to_string(bp.binding) +
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"}");
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return nullptr;
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}
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BindingPoints bps = it->second;
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// Symbols for the newly created bindings must be saved so they can be
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// passed as parameters later. These are placed in a map and keyed by
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// the source symbol associated with the texture_external binding that
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// corresponds with the new destination bindings.
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// NewBindingSymbols new_binding_syms;
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auto& syms = new_binding_symbols[var->symbol];
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syms.plane_0 = ctx.Clone(var->symbol);
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syms.plane_1 = b.Symbols().New("ext_tex_plane_1");
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b.Global(syms.plane_1,
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b.ty.sampled_texture(ast::TextureDimension::k2d, b.ty.f32()),
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b.GroupAndBinding(bps.plane_1.group, bps.plane_1.binding));
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syms.params = b.Symbols().New("ext_tex_params");
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b.Global(syms.params, b.ty.type_name("ExternalTextureParams"),
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ast::StorageClass::kUniform,
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b.GroupAndBinding(bps.params.group, bps.params.binding));
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// Replace the original texture_external binding with a texture_2d<f32>
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// binding.
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ast::DecorationList cloned_decorations = ctx.Clone(var->decorations);
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const ast::Expression* cloned_constructor = ctx.Clone(var->constructor);
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return b.Var(syms.plane_0,
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b.ty.sampled_texture(ast::TextureDimension::k2d, b.ty.f32()),
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cloned_constructor, cloned_decorations);
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});
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// Transform the original textureLoad and textureSampleLevel calls into
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// textureLoadExternal and textureSampleExternal calls.
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ctx.ReplaceAll(
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[&](const ast::CallExpression* expr) -> const ast::CallExpression* {
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auto* intrinsic = sem.Get(expr)->Target()->As<sem::Intrinsic>();
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if (intrinsic && !intrinsic->Parameters().empty() &&
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intrinsic->Parameters()[0]->Type()->Is<sem::ExternalTexture>() &&
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intrinsic->Type() != sem::IntrinsicType::kTextureDimensions) {
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auto it = new_binding_symbols.find(
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expr->args[0]->As<ast::IdentifierExpression>()->symbol);
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if (it == new_binding_symbols.end()) {
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// If valid new binding locations were not provided earlier, we
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// would have been unable to create these symbols. An error
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// message was emitted earlier, so just return early to avoid
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// internal compiler errors and retain a clean error message.
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return nullptr;
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}
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auto& syms = it->second;
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if (intrinsic->Type() == sem::IntrinsicType::kTextureLoad) {
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return createTexLdExt(expr, syms);
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}
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if (intrinsic->Type() == sem::IntrinsicType::kTextureSampleLevel) {
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return createTexSmpExt(expr, syms);
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}
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} else if (sem.Get(expr)->Target()->Is<sem::Function>()) {
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// The call expression may be to a user-defined function that
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// contains a texture_external parameter. These need to be expanded
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// out to multiple plane textures and the texture parameters
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// structure.
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for (const ast::Expression* arg : expr->args) {
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if (auto* id_expr = arg->As<ast::IdentifierExpression>()) {
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// Check if a parameter is a texture_external by trying to find
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// it in the transform state.
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auto it = new_binding_symbols.find(id_expr->symbol);
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if (it != new_binding_symbols.end()) {
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auto& syms = it->second;
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// When we find a texture_external, we must unpack it into its
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// components.
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ctx.Replace(id_expr, b.Expr(syms.plane_0));
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ctx.InsertAfter(expr->args, id_expr, b.Expr(syms.plane_1));
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ctx.InsertAfter(expr->args, id_expr, b.Expr(syms.params));
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}
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}
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}
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}
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return nullptr;
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});
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// We must update all the texture_external parameters for user declared
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// functions.
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ctx.ReplaceAll([&](const ast::Function* fn) -> const ast::Function* {
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for (const ast::Variable* param : fn->params) {
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if (::tint::Is<ast::ExternalTexture>(param->type)) {
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// If we find a texture_external, we must ensure the
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// ExternalTextureParams struct exists.
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if (!params_struct_sym.IsValid()) {
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createExtTexParamsStruct();
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}
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// When a texture_external is found, we insert all components
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// the texture_external into the parameter list. We must also place
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// the new symbols into the transform state so they can be used when
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// transforming function calls.
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auto& syms = new_binding_symbols[param->symbol];
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syms.plane_0 = ctx.Clone(param->symbol);
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syms.plane_1 = b.Symbols().New("ext_tex_plane_1");
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syms.params = b.Symbols().New("ext_tex_params");
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auto tex2d_f32 = [&] {
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return b.ty.sampled_texture(ast::TextureDimension::k2d, b.ty.f32());
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};
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ctx.Replace(param, b.Param(syms.plane_0, tex2d_f32()));
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ctx.InsertAfter(fn->params, param,
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b.Param(syms.plane_1, tex2d_f32()));
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ctx.InsertAfter(
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fn->params, param,
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b.Param(syms.params, b.ty.type_name(params_struct_sym)));
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}
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}
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// Clone the function. This will use the Replace() and InsertAfter() calls
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// above.
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return nullptr;
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});
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}
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/// Creates the ExternalTextureParams struct.
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void createExtTexParamsStruct() {
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ast::StructMemberList member_list = {
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b.Member("numPlanes", b.ty.u32()), b.Member("vr", b.ty.f32()),
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b.Member("ug", b.ty.f32()), b.Member("vg", b.ty.f32()),
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b.Member("ub", b.ty.f32())};
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params_struct_sym = b.Symbols().New("ExternalTextureParams");
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b.Structure(params_struct_sym, member_list,
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ast::DecorationList{b.StructBlock()});
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}
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/// Constructs a StatementList containing all the statements making up the
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/// bodies of the textureSampleExternal and textureLoadExternal functions.
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/// @param callType determines which function body to generate
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/// @returns a statement list that makes of the body of the chosen function
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ast::StatementList createTexFnExtStatementList(sem::IntrinsicType callType) {
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using f32 = ProgramBuilder::f32;
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const ast::CallExpression* single_plane_call;
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const ast::CallExpression* plane_0_call;
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const ast::CallExpression* plane_1_call;
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if (callType == sem::IntrinsicType::kTextureSampleLevel) {
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// textureSampleLevel(plane0, smp, coord.xy, 0.0);
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single_plane_call =
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b.Call("textureSampleLevel", "plane0", "smp", "coord", 0.0f);
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// textureSampleLevel(plane0, smp, coord.xy, 0.0);
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plane_0_call =
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b.Call("textureSampleLevel", "plane0", "smp", "coord", 0.0f);
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// textureSampleLevel(plane1, smp, coord.xy, 0.0);
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plane_1_call =
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b.Call("textureSampleLevel", "plane1", "smp", "coord", 0.0f);
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} else if (callType == sem::IntrinsicType::kTextureLoad) {
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// textureLoad(plane0, coords.xy, 0);
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single_plane_call = b.Call("textureLoad", "plane0", "coord", 0);
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// textureLoad(plane0, coords.xy, 0);
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plane_0_call = b.Call("textureLoad", "plane0", "coord", 0);
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// textureLoad(plane1, coords.xy, 0);
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plane_1_call = b.Call("textureLoad", "plane1", "coord", 0);
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}
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return {
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// if (params.numPlanes == 1u) {
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// return singlePlaneCall
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// }
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b.If(b.create<ast::BinaryExpression>(
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ast::BinaryOp::kEqual, b.MemberAccessor("params", "numPlanes"),
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b.Expr(1u)),
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b.Block(b.Return(single_plane_call))),
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// let y = plane0Call.r - 0.0625;
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b.Decl(b.Const("y", nullptr,
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b.Sub(b.MemberAccessor(plane_0_call, "r"), 0.0625f))),
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// let uv = plane1Call.rg - 0.5;
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b.Decl(b.Const("uv", nullptr,
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b.Sub(b.MemberAccessor(plane_1_call, "rg"), 0.5f))),
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// let u = uv.x;
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b.Decl(b.Const("u", nullptr, b.MemberAccessor("uv", "x"))),
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// let v = uv.y;
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b.Decl(b.Const("v", nullptr, b.MemberAccessor("uv", "y"))),
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// let r = 1.164 * y + params.vr * v;
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b.Decl(b.Const("r", nullptr,
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b.Add(b.Mul(1.164f, "y"),
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b.Mul(b.MemberAccessor("params", "vr"), "v")))),
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// let g = 1.164 * y - params.ug * u - params.vg * v;
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b.Decl(
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b.Const("g", nullptr,
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b.Sub(b.Sub(b.Mul(1.164f, "y"),
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b.Mul(b.MemberAccessor("params", "ug"), "u")),
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b.Mul(b.MemberAccessor("params", "vg"), "v")))),
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// let b = 1.164 * y + params.ub * u;
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b.Decl(b.Const("b", nullptr,
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b.Add(b.Mul(1.164f, "y"),
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b.Mul(b.MemberAccessor("params", "ub"), "u")))),
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// return vec4<f32>(r, g, b, 1.0);
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b.Return(b.vec4<f32>("r", "g", "b", 1.0f)),
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};
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}
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/// Creates the textureSampleExternal function if needed and returns a call
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/// expression to it.
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/// @param expr the call expression being transformed
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/// @param syms the expanded symbols to be used in the new call
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/// @returns a call expression to textureSampleExternal
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const ast::CallExpression* createTexSmpExt(const ast::CallExpression* expr,
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NewBindingSymbols syms) {
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ast::ExpressionList params;
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const ast::Expression* plane_0_binding_param = ctx.Clone(expr->args[0]);
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if (expr->args.size() != 3) {
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TINT_ICE(Transform, b.Diagnostics())
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<< "expected textureSampleLevel call with a "
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"texture_external to have 3 parameters, found "
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<< expr->args.size() << " parameters";
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}
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if (!texture_sample_external_sym.IsValid()) {
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texture_sample_external_sym = b.Symbols().New("textureSampleExternal");
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// Emit the textureSampleExternal function.
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ast::VariableList varList = {
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b.Param("plane0",
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b.ty.sampled_texture(ast::TextureDimension::k2d, b.ty.f32())),
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b.Param("plane1",
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b.ty.sampled_texture(ast::TextureDimension::k2d, b.ty.f32())),
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b.Param("smp", b.ty.sampler(ast::SamplerKind::kSampler)),
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b.Param("coord", b.ty.vec2(b.ty.f32())),
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b.Param("params", b.ty.type_name(params_struct_sym))};
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ast::StatementList statementList =
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createTexFnExtStatementList(sem::IntrinsicType::kTextureSampleLevel);
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b.Func(texture_sample_external_sym, varList, b.ty.vec4(b.ty.f32()),
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statementList, {});
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}
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const ast::IdentifierExpression* exp = b.Expr(texture_sample_external_sym);
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params = {plane_0_binding_param, b.Expr(syms.plane_1),
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ctx.Clone(expr->args[1]), ctx.Clone(expr->args[2]),
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b.Expr(syms.params)};
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return b.Call(exp, params);
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}
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/// Creates the textureLoadExternal function if needed and returns a call
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/// expression to it.
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/// @param expr the call expression being transformed
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/// @param syms the expanded symbols to be used in the new call
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/// @returns a call expression to textureLoadExternal
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const ast::CallExpression* createTexLdExt(const ast::CallExpression* expr,
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NewBindingSymbols syms) {
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ast::ExpressionList params;
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const ast::Expression* plane_0_binding_param = ctx.Clone(expr->args[0]);
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if (expr->args.size() != 2) {
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TINT_ICE(Transform, b.Diagnostics())
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<< "expected textureLoad call with a texture_external "
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"to have 2 parameters, found "
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<< expr->args.size() << " parameters";
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}
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if (!texture_load_external_sym.IsValid()) {
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texture_load_external_sym = b.Symbols().New("textureLoadExternal");
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// Emit the textureLoadExternal function.
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ast::VariableList var_list = {
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b.Param("plane0",
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b.ty.sampled_texture(ast::TextureDimension::k2d, b.ty.f32())),
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b.Param("plane1",
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b.ty.sampled_texture(ast::TextureDimension::k2d, b.ty.f32())),
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b.Param("coord", b.ty.vec2(b.ty.i32())),
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b.Param("params", b.ty.type_name(params_struct_sym))};
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ast::StatementList statement_list =
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createTexFnExtStatementList(sem::IntrinsicType::kTextureLoad);
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b.Func(texture_load_external_sym, var_list, b.ty.vec4(b.ty.f32()),
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statement_list, {});
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}
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const ast::IdentifierExpression* exp = b.Expr(texture_load_external_sym);
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params = {plane_0_binding_param, b.Expr(syms.plane_1),
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ctx.Clone(expr->args[1]), b.Expr(syms.params)};
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return b.Call(exp, params);
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}
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};
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MultiplanarExternalTexture::NewBindingPoints::NewBindingPoints(
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@ -72,285 +415,21 @@ MultiplanarExternalTexture::~MultiplanarExternalTexture() = default;
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void MultiplanarExternalTexture::Run(CloneContext& ctx,
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const DataMap& inputs,
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DataMap&) {
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State state;
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auto& b = *ctx.dst;
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auto* new_binding_points = inputs.Get<NewBindingPoints>();
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if (!new_binding_points) {
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b.Diagnostics().add_error(
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ctx.dst->Diagnostics().add_error(
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diag::System::Transform,
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"missing new binding point data for " + std::string(TypeInfo().name));
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return;
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}
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auto& sem = ctx.src->Sem();
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State state(ctx, new_binding_points);
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// For each texture_external binding, we replace it with a texture_2d<f32>
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// binding and create two additional bindings (one texture_2d<f32> to
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// represent the secondary plane and one uniform buffer for the
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// ExternalTextureParams struct).
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ctx.ReplaceAll([&](const ast::Variable* var) -> const ast::Variable* {
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if (!::tint::Is<ast::ExternalTexture>(var->type)) {
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return nullptr;
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}
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// If the decorations are empty, then this must be a texture_external being
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// passed as a function parameter. We need to unpack this into multiple
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// parameters - but this hasn't been implemented so produce an error.
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if (var->decorations.empty()) {
|
||||
b.Diagnostics().add_error(
|
||||
diag::System::Transform,
|
||||
"transforming a texture_external passed as a user-defined function "
|
||||
"parameter has not been implemented.");
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
// If we find a texture_external binding, we know we must emit the
|
||||
// ExternalTextureParams struct.
|
||||
if (!state.external_texture_params_struct_sym.IsValid()) {
|
||||
ast::StructMemberList member_list = {
|
||||
b.Member("numPlanes", b.ty.u32()), b.Member("vr", b.ty.f32()),
|
||||
b.Member("ug", b.ty.f32()), b.Member("vg", b.ty.f32()),
|
||||
b.Member("ub", b.ty.f32())};
|
||||
|
||||
state.external_texture_params_struct_sym =
|
||||
b.Symbols().New("ExternalTextureParams");
|
||||
|
||||
b.Structure(state.external_texture_params_struct_sym, member_list,
|
||||
ast::DecorationList{b.StructBlock()});
|
||||
}
|
||||
|
||||
// The binding points for the newly introduced bindings must have been
|
||||
// provided to this transform. We fetch the new binding points by
|
||||
// providing the original texture_external binding points into the
|
||||
// passed map.
|
||||
BindingPoint bp = {var->BindingPoint().group->value,
|
||||
var->BindingPoint().binding->value};
|
||||
BindingPoints bps;
|
||||
BindingsMap::const_iterator it = new_binding_points->bindings_map.find(bp);
|
||||
if (it == new_binding_points->bindings_map.end()) {
|
||||
b.Diagnostics().add_error(
|
||||
diag::System::Transform,
|
||||
"missing new binding points for texture_external at binding {" +
|
||||
std::to_string(bp.group) + "," + std::to_string(bp.binding) +
|
||||
"}");
|
||||
return nullptr;
|
||||
} else {
|
||||
bps = it->second;
|
||||
}
|
||||
|
||||
// Symbols for the newly created bindings must be saved so they can be
|
||||
// passed as parameters later. These are placed in a map and keyed by
|
||||
// the symbol associated with the texture_external binding that
|
||||
// corresponds with the new bindings.
|
||||
NewBindingSymbols new_binding_syms;
|
||||
new_binding_syms.ext_tex_plane_1_binding_sym =
|
||||
b.Symbols().New("ext_tex_plane_1");
|
||||
b.Global(new_binding_syms.ext_tex_plane_1_binding_sym,
|
||||
b.ty.sampled_texture(ast::TextureDimension::k2d, b.ty.f32()),
|
||||
b.GroupAndBinding(bps.plane_1.group, bps.plane_1.binding));
|
||||
|
||||
new_binding_syms.ext_tex_params_binding_sym =
|
||||
b.Symbols().New("ext_tex_params");
|
||||
b.Global(new_binding_syms.ext_tex_params_binding_sym,
|
||||
b.ty.type_name("ExternalTextureParams"),
|
||||
ast::StorageClass::kUniform,
|
||||
b.GroupAndBinding(bps.params.group, bps.params.binding));
|
||||
|
||||
// Replace the original texture_external binding with a texture_2d<f32>
|
||||
// binding.
|
||||
auto cloned_sym = ctx.Clone(var->symbol);
|
||||
ast::DecorationList cloned_decorations = ctx.Clone(var->decorations);
|
||||
const ast::Expression* cloned_constructor = ctx.Clone(var->constructor);
|
||||
state.new_binding_symbols[cloned_sym] = new_binding_syms;
|
||||
|
||||
return b.Var(cloned_sym,
|
||||
b.ty.sampled_texture(ast::TextureDimension::k2d, b.ty.f32()),
|
||||
cloned_constructor, cloned_decorations);
|
||||
});
|
||||
|
||||
// Transform the original textureLoad and textureSampleLevel calls into
|
||||
// textureLoadExternal and textureSampleExternal calls.
|
||||
ctx.ReplaceAll([&](const ast::CallExpression* expr)
|
||||
-> const ast::CallExpression* {
|
||||
auto* intrinsic = sem.Get(expr)->Target()->As<sem::Intrinsic>();
|
||||
|
||||
if (!intrinsic ||
|
||||
!intrinsic->Parameters()[0]->Type()->Is<sem::ExternalTexture>() ||
|
||||
intrinsic->Parameters().empty() ||
|
||||
intrinsic->Type() == sem::IntrinsicType::kTextureDimensions) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
const ast::Expression* ext_tex_plane_0_binding_param =
|
||||
ctx.Clone(expr->args[0]);
|
||||
|
||||
// Lookup the symbols for the new bindings using the symbol from the
|
||||
// original texture_external.
|
||||
Symbol ext_tex_plane_1_binding_sym =
|
||||
state
|
||||
.new_binding_symbols[ext_tex_plane_0_binding_param
|
||||
->As<ast::IdentifierExpression>()
|
||||
->symbol]
|
||||
.ext_tex_plane_1_binding_sym;
|
||||
Symbol ext_tex_params_binding_sym =
|
||||
state
|
||||
.new_binding_symbols[ext_tex_plane_0_binding_param
|
||||
->As<ast::IdentifierExpression>()
|
||||
->symbol]
|
||||
.ext_tex_params_binding_sym;
|
||||
|
||||
// If valid new binding locations were not provided earlier, we would
|
||||
// have been unable to create these symbols. An error message was
|
||||
// emitted earlier, so just return early to avoid internal compiler
|
||||
// errors and retain a clean error message.
|
||||
if (!ext_tex_plane_1_binding_sym.IsValid() ||
|
||||
!ext_tex_params_binding_sym.IsValid()) {
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
ast::IdentifierExpression* exp;
|
||||
ast::ExpressionList params;
|
||||
|
||||
if (intrinsic->Type() == sem::IntrinsicType::kTextureLoad) {
|
||||
if (expr->args.size() != 2) {
|
||||
TINT_ICE(Transform, b.Diagnostics())
|
||||
<< "expected textureLoad call with a texture_external "
|
||||
"to "
|
||||
"have 2 parameters, found "
|
||||
<< expr->args.size() << " parameters";
|
||||
}
|
||||
|
||||
if (!state.texture_load_external_sym.IsValid()) {
|
||||
state.texture_load_external_sym =
|
||||
b.Symbols().New("textureLoadExternal");
|
||||
|
||||
// Emit the textureLoadExternal function.
|
||||
ast::VariableList var_list = {
|
||||
b.Param("plane0", b.ty.sampled_texture(ast::TextureDimension::k2d,
|
||||
b.ty.f32())),
|
||||
b.Param("plane1", b.ty.sampled_texture(ast::TextureDimension::k2d,
|
||||
b.ty.f32())),
|
||||
b.Param("coord", b.ty.vec2(b.ty.i32())),
|
||||
b.Param("params",
|
||||
b.ty.type_name(state.external_texture_params_struct_sym))};
|
||||
|
||||
ast::StatementList statement_list =
|
||||
createTexFnExtStatementList(b, sem::IntrinsicType::kTextureLoad);
|
||||
|
||||
b.Func(state.texture_load_external_sym, var_list, b.ty.vec4(b.ty.f32()),
|
||||
statement_list, {});
|
||||
}
|
||||
|
||||
exp =
|
||||
b.create<ast::IdentifierExpression>(state.texture_load_external_sym);
|
||||
params = {ext_tex_plane_0_binding_param,
|
||||
b.Expr(ext_tex_plane_1_binding_sym), ctx.Clone(expr->args[1]),
|
||||
b.Expr(ext_tex_params_binding_sym)};
|
||||
} else if (intrinsic->Type() == sem::IntrinsicType::kTextureSampleLevel) {
|
||||
if (expr->args.size() != 3) {
|
||||
TINT_ICE(Transform, b.Diagnostics())
|
||||
<< "expected textureSampleLevel call with a "
|
||||
"texture_external to have 3 parameters, found "
|
||||
<< expr->args.size() << " parameters";
|
||||
}
|
||||
|
||||
if (!state.texture_sample_external_sym.IsValid()) {
|
||||
state.texture_sample_external_sym =
|
||||
b.Symbols().New("textureSampleExternal");
|
||||
|
||||
// Emit the textureSampleExternal function.
|
||||
ast::VariableList varList = {
|
||||
b.Param("plane0", b.ty.sampled_texture(ast::TextureDimension::k2d,
|
||||
b.ty.f32())),
|
||||
b.Param("plane1", b.ty.sampled_texture(ast::TextureDimension::k2d,
|
||||
b.ty.f32())),
|
||||
b.Param("smp", b.ty.sampler(ast::SamplerKind::kSampler)),
|
||||
b.Param("coord", b.ty.vec2(b.ty.f32())),
|
||||
b.Param("params",
|
||||
b.ty.type_name(state.external_texture_params_struct_sym))};
|
||||
|
||||
ast::StatementList statementList = createTexFnExtStatementList(
|
||||
b, sem::IntrinsicType::kTextureSampleLevel);
|
||||
|
||||
b.Func(state.texture_sample_external_sym, varList,
|
||||
b.ty.vec4(b.ty.f32()), statementList, {});
|
||||
}
|
||||
exp = b.create<ast::IdentifierExpression>(
|
||||
state.texture_sample_external_sym);
|
||||
params = {ext_tex_plane_0_binding_param,
|
||||
b.Expr(ext_tex_plane_1_binding_sym), ctx.Clone(expr->args[1]),
|
||||
ctx.Clone(expr->args[2]), b.Expr(ext_tex_params_binding_sym)};
|
||||
}
|
||||
|
||||
return b.Call(exp, params);
|
||||
});
|
||||
state.Process();
|
||||
|
||||
ctx.Clone();
|
||||
}
|
||||
|
||||
// Constructs a StatementList containing all the statements making up the bodies
|
||||
// of the textureSampleExternal and textureLoadExternal functions.
|
||||
ast::StatementList MultiplanarExternalTexture::createTexFnExtStatementList(
|
||||
ProgramBuilder& b,
|
||||
sem::IntrinsicType callType) {
|
||||
using f32 = ProgramBuilder::f32;
|
||||
const ast::CallExpression* single_plane_call;
|
||||
const ast::CallExpression* plane_0_call;
|
||||
const ast::CallExpression* plane_1_call;
|
||||
if (callType == sem::IntrinsicType::kTextureSampleLevel) {
|
||||
// textureSampleLevel(plane0, smp, coord.xy, 0.0);
|
||||
single_plane_call =
|
||||
b.Call("textureSampleLevel", "plane0", "smp", "coord", 0.0f);
|
||||
// textureSampleLevel(plane0, smp, coord.xy, 0.0);
|
||||
plane_0_call = b.Call("textureSampleLevel", "plane0", "smp", "coord", 0.0f);
|
||||
// textureSampleLevel(plane1, smp, coord.xy, 0.0);
|
||||
plane_1_call = b.Call("textureSampleLevel", "plane1", "smp", "coord", 0.0f);
|
||||
} else if (callType == sem::IntrinsicType::kTextureLoad) {
|
||||
// textureLoad(plane0, coords.xy, 0);
|
||||
single_plane_call = b.Call("textureLoad", "plane0", "coord", 0);
|
||||
// textureLoad(plane0, coords.xy, 0);
|
||||
plane_0_call = b.Call("textureLoad", "plane0", "coord", 0);
|
||||
// textureLoad(plane1, coords.xy, 0);
|
||||
plane_1_call = b.Call("textureLoad", "plane1", "coord", 0);
|
||||
}
|
||||
|
||||
return {
|
||||
// if (params.numPlanes == 1u) {
|
||||
// return singlePlaneCall
|
||||
// }
|
||||
b.If(b.create<ast::BinaryExpression>(
|
||||
ast::BinaryOp::kEqual, b.MemberAccessor("params", "numPlanes"),
|
||||
b.Expr(1u)),
|
||||
b.Block(b.Return(single_plane_call))),
|
||||
// let y = plane0Call.r - 0.0625;
|
||||
b.Decl(b.Const("y", nullptr,
|
||||
b.Sub(b.MemberAccessor(plane_0_call, "r"), 0.0625f))),
|
||||
// let uv = plane1Call.rg - 0.5;
|
||||
b.Decl(b.Const("uv", nullptr,
|
||||
b.Sub(b.MemberAccessor(plane_1_call, "rg"), 0.5f))),
|
||||
// let u = uv.x;
|
||||
b.Decl(b.Const("u", nullptr, b.MemberAccessor("uv", "x"))),
|
||||
// let v = uv.y;
|
||||
b.Decl(b.Const("v", nullptr, b.MemberAccessor("uv", "y"))),
|
||||
// let r = 1.164 * y + params.vr * v;
|
||||
b.Decl(b.Const("r", nullptr,
|
||||
b.Add(b.Mul(1.164f, "y"),
|
||||
b.Mul(b.MemberAccessor("params", "vr"), "v")))),
|
||||
// let g = 1.164 * y - params.ug * u - params.vg * v;
|
||||
b.Decl(b.Const("g", nullptr,
|
||||
b.Sub(b.Sub(b.Mul(1.164f, "y"),
|
||||
b.Mul(b.MemberAccessor("params", "ug"), "u")),
|
||||
b.Mul(b.MemberAccessor("params", "vg"), "v")))),
|
||||
// let b = 1.164 * y + params.ub * u;
|
||||
b.Decl(b.Const("b", nullptr,
|
||||
b.Add(b.Mul(1.164f, "y"),
|
||||
b.Mul(b.MemberAccessor("params", "ub"), "u")))),
|
||||
// return vec4<f32>(r, g, b, 1.0);
|
||||
b.Return(b.vec4<f32>("r", "g", "b", 1.0f)),
|
||||
};
|
||||
}
|
||||
|
||||
} // namespace transform
|
||||
} // namespace tint
|
||||
|
|
|
|||
|
|
@ -86,17 +86,6 @@ class MultiplanarExternalTexture
|
|||
/// @param inputs optional extra transform-specific input data
|
||||
/// @param outputs optional extra transform-specific output data
|
||||
void Run(CloneContext& ctx, const DataMap& inputs, DataMap& outputs) override;
|
||||
|
||||
/// Creates the statement list for the TextureSampleExternal and
|
||||
/// TextureLoadExternal functions.
|
||||
/// @param b a reference to the ProgramBuilder associated with the destination
|
||||
/// context
|
||||
/// @param callType determines the kind of param list to emit (either
|
||||
/// textureLoad or textureSampleLevel)
|
||||
/// @returns a statement list that is used to create the TextureSampleExternal
|
||||
/// and TextureLoadExternal functions.
|
||||
ast::StatementList createTexFnExtStatementList(ProgramBuilder& b,
|
||||
sem::IntrinsicType callType);
|
||||
};
|
||||
|
||||
} // namespace transform
|
||||
|
|
|
|||
|
|
@ -379,21 +379,278 @@ fn main([[builtin(position)]] coord : vec4<f32>) -> [[location(0)]] vec4<f32> {
|
|||
TEST_F(MultiplanarExternalTextureTest, ExternalTexturePassedAsParam) {
|
||||
auto* src = R"(
|
||||
fn f(t : texture_external, s : sampler) {
|
||||
textureSampleLevel(t, s, vec2<f32>(1.0, 2.0));
|
||||
}
|
||||
textureSampleLevel(t, s, vec2<f32>(1.0, 2.0));
|
||||
}
|
||||
|
||||
[[group(0), binding(0)]] var ext_tex : texture_external;
|
||||
[[group(0), binding(1)]] var smp : sampler;
|
||||
[[group(0), binding(0)]] var ext_tex : texture_external;
|
||||
[[group(0), binding(1)]] var smp : sampler;
|
||||
|
||||
[[stage(fragment)]]
|
||||
fn main() {
|
||||
f(ext_tex, smp);
|
||||
}
|
||||
[[stage(fragment)]]
|
||||
fn main() {
|
||||
f(ext_tex, smp);
|
||||
}
|
||||
)";
|
||||
|
||||
auto* expect =
|
||||
"error: transforming a texture_external passed as a user-defined "
|
||||
"function parameter has not been implemented.";
|
||||
auto* expect = R"(
|
||||
[[block]]
|
||||
struct ExternalTextureParams {
|
||||
numPlanes : u32;
|
||||
vr : f32;
|
||||
ug : f32;
|
||||
vg : f32;
|
||||
ub : f32;
|
||||
};
|
||||
|
||||
fn textureSampleExternal(plane0 : texture_2d<f32>, plane1 : texture_2d<f32>, smp : sampler, coord : vec2<f32>, params : ExternalTextureParams) -> vec4<f32> {
|
||||
if ((params.numPlanes == 1u)) {
|
||||
return textureSampleLevel(plane0, smp, coord, 0.0);
|
||||
}
|
||||
let y = (textureSampleLevel(plane0, smp, coord, 0.0).r - 0.0625);
|
||||
let uv = (textureSampleLevel(plane1, smp, coord, 0.0).rg - 0.5);
|
||||
let u = uv.x;
|
||||
let v = uv.y;
|
||||
let r = ((1.164000034 * y) + (params.vr * v));
|
||||
let g = (((1.164000034 * y) - (params.ug * u)) - (params.vg * v));
|
||||
let b = ((1.164000034 * y) + (params.ub * u));
|
||||
return vec4<f32>(r, g, b, 1.0);
|
||||
}
|
||||
|
||||
fn f(t : texture_2d<f32>, ext_tex_plane_1 : texture_2d<f32>, ext_tex_params : ExternalTextureParams, s : sampler) {
|
||||
textureSampleExternal(t, ext_tex_plane_1, s, vec2<f32>(1.0, 2.0), ext_tex_params);
|
||||
}
|
||||
|
||||
[[group(0), binding(2)]] var ext_tex_plane_1_1 : texture_2d<f32>;
|
||||
|
||||
[[group(0), binding(3)]] var<uniform> ext_tex_params_1 : ExternalTextureParams;
|
||||
|
||||
[[group(0), binding(0)]] var ext_tex : texture_2d<f32>;
|
||||
|
||||
[[group(0), binding(1)]] var smp : sampler;
|
||||
|
||||
[[stage(fragment)]]
|
||||
fn main() {
|
||||
f(ext_tex, ext_tex_plane_1_1, ext_tex_params_1, smp);
|
||||
}
|
||||
)";
|
||||
DataMap data;
|
||||
data.Add<MultiplanarExternalTexture::NewBindingPoints>(
|
||||
MultiplanarExternalTexture::BindingsMap{
|
||||
{{0, 0}, {{0, 2}, {0, 3}}},
|
||||
});
|
||||
auto got = Run<MultiplanarExternalTexture>(src, data);
|
||||
EXPECT_EQ(expect, str(got));
|
||||
}
|
||||
|
||||
// Tests that the texture_external passed as a parameter not in the first
|
||||
// position produces the correct output.
|
||||
TEST_F(MultiplanarExternalTextureTest, ExternalTexturePassedAsSecondParam) {
|
||||
auto* src = R"(
|
||||
fn f(s : sampler, t : texture_external) {
|
||||
textureSampleLevel(t, s, vec2<f32>(1.0, 2.0));
|
||||
}
|
||||
|
||||
[[group(0), binding(0)]] var ext_tex : texture_external;
|
||||
[[group(0), binding(1)]] var smp : sampler;
|
||||
|
||||
[[stage(fragment)]]
|
||||
fn main() {
|
||||
f(smp, ext_tex);
|
||||
}
|
||||
)";
|
||||
|
||||
auto* expect = R"(
|
||||
[[block]]
|
||||
struct ExternalTextureParams {
|
||||
numPlanes : u32;
|
||||
vr : f32;
|
||||
ug : f32;
|
||||
vg : f32;
|
||||
ub : f32;
|
||||
};
|
||||
|
||||
fn textureSampleExternal(plane0 : texture_2d<f32>, plane1 : texture_2d<f32>, smp : sampler, coord : vec2<f32>, params : ExternalTextureParams) -> vec4<f32> {
|
||||
if ((params.numPlanes == 1u)) {
|
||||
return textureSampleLevel(plane0, smp, coord, 0.0);
|
||||
}
|
||||
let y = (textureSampleLevel(plane0, smp, coord, 0.0).r - 0.0625);
|
||||
let uv = (textureSampleLevel(plane1, smp, coord, 0.0).rg - 0.5);
|
||||
let u = uv.x;
|
||||
let v = uv.y;
|
||||
let r = ((1.164000034 * y) + (params.vr * v));
|
||||
let g = (((1.164000034 * y) - (params.ug * u)) - (params.vg * v));
|
||||
let b = ((1.164000034 * y) + (params.ub * u));
|
||||
return vec4<f32>(r, g, b, 1.0);
|
||||
}
|
||||
|
||||
fn f(s : sampler, t : texture_2d<f32>, ext_tex_plane_1 : texture_2d<f32>, ext_tex_params : ExternalTextureParams) {
|
||||
textureSampleExternal(t, ext_tex_plane_1, s, vec2<f32>(1.0, 2.0), ext_tex_params);
|
||||
}
|
||||
|
||||
[[group(0), binding(2)]] var ext_tex_plane_1_1 : texture_2d<f32>;
|
||||
|
||||
[[group(0), binding(3)]] var<uniform> ext_tex_params_1 : ExternalTextureParams;
|
||||
|
||||
[[group(0), binding(0)]] var ext_tex : texture_2d<f32>;
|
||||
|
||||
[[group(0), binding(1)]] var smp : sampler;
|
||||
|
||||
[[stage(fragment)]]
|
||||
fn main() {
|
||||
f(smp, ext_tex, ext_tex_plane_1_1, ext_tex_params_1);
|
||||
}
|
||||
)";
|
||||
DataMap data;
|
||||
data.Add<MultiplanarExternalTexture::NewBindingPoints>(
|
||||
MultiplanarExternalTexture::BindingsMap{
|
||||
{{0, 0}, {{0, 2}, {0, 3}}},
|
||||
});
|
||||
auto got = Run<MultiplanarExternalTexture>(src, data);
|
||||
EXPECT_EQ(expect, str(got));
|
||||
}
|
||||
|
||||
// Tests that multiple texture_external params passed to a function produces the
|
||||
// correct output.
|
||||
TEST_F(MultiplanarExternalTextureTest, ExternalTexturePassedAsParamMultiple) {
|
||||
auto* src = R"(
|
||||
fn f(t : texture_external, s : sampler, t2 : texture_external) {
|
||||
textureSampleLevel(t, s, vec2<f32>(1.0, 2.0));
|
||||
textureSampleLevel(t2, s, vec2<f32>(1.0, 2.0));
|
||||
}
|
||||
|
||||
[[group(0), binding(0)]] var ext_tex : texture_external;
|
||||
[[group(0), binding(1)]] var smp : sampler;
|
||||
[[group(0), binding(2)]] var ext_tex2 : texture_external;
|
||||
|
||||
[[stage(fragment)]]
|
||||
fn main() {
|
||||
f(ext_tex, smp, ext_tex2);
|
||||
}
|
||||
)";
|
||||
|
||||
auto* expect = R"(
|
||||
[[block]]
|
||||
struct ExternalTextureParams {
|
||||
numPlanes : u32;
|
||||
vr : f32;
|
||||
ug : f32;
|
||||
vg : f32;
|
||||
ub : f32;
|
||||
};
|
||||
|
||||
fn textureSampleExternal(plane0 : texture_2d<f32>, plane1 : texture_2d<f32>, smp : sampler, coord : vec2<f32>, params : ExternalTextureParams) -> vec4<f32> {
|
||||
if ((params.numPlanes == 1u)) {
|
||||
return textureSampleLevel(plane0, smp, coord, 0.0);
|
||||
}
|
||||
let y = (textureSampleLevel(plane0, smp, coord, 0.0).r - 0.0625);
|
||||
let uv = (textureSampleLevel(plane1, smp, coord, 0.0).rg - 0.5);
|
||||
let u = uv.x;
|
||||
let v = uv.y;
|
||||
let r = ((1.164000034 * y) + (params.vr * v));
|
||||
let g = (((1.164000034 * y) - (params.ug * u)) - (params.vg * v));
|
||||
let b = ((1.164000034 * y) + (params.ub * u));
|
||||
return vec4<f32>(r, g, b, 1.0);
|
||||
}
|
||||
|
||||
fn f(t : texture_2d<f32>, ext_tex_plane_1 : texture_2d<f32>, ext_tex_params : ExternalTextureParams, s : sampler, t2 : texture_2d<f32>, ext_tex_plane_1_1 : texture_2d<f32>, ext_tex_params_1 : ExternalTextureParams) {
|
||||
textureSampleExternal(t, ext_tex_plane_1, s, vec2<f32>(1.0, 2.0), ext_tex_params);
|
||||
textureSampleExternal(t2, ext_tex_plane_1_1, s, vec2<f32>(1.0, 2.0), ext_tex_params_1);
|
||||
}
|
||||
|
||||
[[group(0), binding(3)]] var ext_tex_plane_1_2 : texture_2d<f32>;
|
||||
|
||||
[[group(0), binding(4)]] var<uniform> ext_tex_params_2 : ExternalTextureParams;
|
||||
|
||||
[[group(0), binding(0)]] var ext_tex : texture_2d<f32>;
|
||||
|
||||
[[group(0), binding(1)]] var smp : sampler;
|
||||
|
||||
[[group(0), binding(5)]] var ext_tex_plane_1_3 : texture_2d<f32>;
|
||||
|
||||
[[group(0), binding(6)]] var<uniform> ext_tex_params_3 : ExternalTextureParams;
|
||||
|
||||
[[group(0), binding(2)]] var ext_tex2 : texture_2d<f32>;
|
||||
|
||||
[[stage(fragment)]]
|
||||
fn main() {
|
||||
f(ext_tex, ext_tex_plane_1_2, ext_tex_params_2, smp, ext_tex2, ext_tex_plane_1_3, ext_tex_params_3);
|
||||
}
|
||||
)";
|
||||
DataMap data;
|
||||
data.Add<MultiplanarExternalTexture::NewBindingPoints>(
|
||||
MultiplanarExternalTexture::BindingsMap{
|
||||
{{0, 0}, {{0, 3}, {0, 4}}},
|
||||
{{0, 2}, {{0, 5}, {0, 6}}},
|
||||
});
|
||||
auto got = Run<MultiplanarExternalTexture>(src, data);
|
||||
EXPECT_EQ(expect, str(got));
|
||||
}
|
||||
|
||||
// Tests that the texture_external passed to as a parameter to multiple
|
||||
// functions produces the correct output.
|
||||
TEST_F(MultiplanarExternalTextureTest, ExternalTexturePassedAsParamNested) {
|
||||
auto* src = R"(
|
||||
fn nested(t : texture_external, s : sampler) {
|
||||
textureSampleLevel(t, s, vec2<f32>(1.0, 2.0));
|
||||
}
|
||||
|
||||
fn f(t : texture_external, s : sampler) {
|
||||
nested(t, s);
|
||||
}
|
||||
|
||||
[[group(0), binding(0)]] var ext_tex : texture_external;
|
||||
[[group(0), binding(1)]] var smp : sampler;
|
||||
|
||||
[[stage(fragment)]]
|
||||
fn main() {
|
||||
f(ext_tex, smp);
|
||||
}
|
||||
)";
|
||||
|
||||
auto* expect = R"(
|
||||
[[block]]
|
||||
struct ExternalTextureParams {
|
||||
numPlanes : u32;
|
||||
vr : f32;
|
||||
ug : f32;
|
||||
vg : f32;
|
||||
ub : f32;
|
||||
};
|
||||
|
||||
fn textureSampleExternal(plane0 : texture_2d<f32>, plane1 : texture_2d<f32>, smp : sampler, coord : vec2<f32>, params : ExternalTextureParams) -> vec4<f32> {
|
||||
if ((params.numPlanes == 1u)) {
|
||||
return textureSampleLevel(plane0, smp, coord, 0.0);
|
||||
}
|
||||
let y = (textureSampleLevel(plane0, smp, coord, 0.0).r - 0.0625);
|
||||
let uv = (textureSampleLevel(plane1, smp, coord, 0.0).rg - 0.5);
|
||||
let u = uv.x;
|
||||
let v = uv.y;
|
||||
let r = ((1.164000034 * y) + (params.vr * v));
|
||||
let g = (((1.164000034 * y) - (params.ug * u)) - (params.vg * v));
|
||||
let b = ((1.164000034 * y) + (params.ub * u));
|
||||
return vec4<f32>(r, g, b, 1.0);
|
||||
}
|
||||
|
||||
fn nested(t : texture_2d<f32>, ext_tex_plane_1 : texture_2d<f32>, ext_tex_params : ExternalTextureParams, s : sampler) {
|
||||
textureSampleExternal(t, ext_tex_plane_1, s, vec2<f32>(1.0, 2.0), ext_tex_params);
|
||||
}
|
||||
|
||||
fn f(t : texture_2d<f32>, ext_tex_plane_1_1 : texture_2d<f32>, ext_tex_params_1 : ExternalTextureParams, s : sampler) {
|
||||
nested(t, ext_tex_plane_1_1, ext_tex_params_1, s);
|
||||
}
|
||||
|
||||
[[group(0), binding(2)]] var ext_tex_plane_1_2 : texture_2d<f32>;
|
||||
|
||||
[[group(0), binding(3)]] var<uniform> ext_tex_params_2 : ExternalTextureParams;
|
||||
|
||||
[[group(0), binding(0)]] var ext_tex : texture_2d<f32>;
|
||||
|
||||
[[group(0), binding(1)]] var smp : sampler;
|
||||
|
||||
[[stage(fragment)]]
|
||||
fn main() {
|
||||
f(ext_tex, ext_tex_plane_1_2, ext_tex_params_2, smp);
|
||||
}
|
||||
)";
|
||||
DataMap data;
|
||||
data.Add<MultiplanarExternalTexture::NewBindingPoints>(
|
||||
MultiplanarExternalTexture::BindingsMap{
|
||||
|
|
|
|||
Loading…
Reference in New Issue