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// Copyright 2021 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "DrawTester.hpp"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
class DrawTest : public testing::Test
{
};
// Test that a vertex shader with no gl_Position works.
// This was fixed in swiftshader-cl/51808
TEST_F(DrawTest, VertexShaderNoPositionOutput)
{
DrawTester tester;
tester.onCreateVertexBuffers([](DrawTester &tester) {
struct Vertex
{
float position[3];
};
Vertex vertexBufferData[] = {
{ { 1.0f, 1.0f, 0.5f } },
{ { -1.0f, 1.0f, 0.5f } },
{ { 0.0f, -1.0f, 0.5f } }
};
std::vector<vk::VertexInputAttributeDescription> inputAttributes;
inputAttributes.push_back(vk::VertexInputAttributeDescription(0, 0, vk::Format::eR32G32B32Sfloat, offsetof(Vertex, position)));
tester.addVertexBuffer(vertexBufferData, sizeof(vertexBufferData), std::move(inputAttributes));
});
tester.onCreateVertexShader([](DrawTester &tester) {
const char *vertexShader = R"(#version 310 es
layout(location = 0) in vec3 inPos;
void main()
{
// Remove gl_Position on purpose for the test
//gl_Position = vec4(inPos.xyz, 1.0);
})";
return tester.createShaderModule(vertexShader, EShLanguage::EShLangVertex);
});
tester.onCreateFragmentShader([](DrawTester &tester) {
const char *fragmentShader = R"(#version 310 es
precision highp float;
layout(location = 0) out vec4 outColor;
void main()
{
outColor = vec4(1.0, 1.0, 1.0, 1.0);
})";
return tester.createShaderModule(fragmentShader, EShLanguage::EShLangFragment);
});
tester.initialize();
tester.renderFrame();
}