1 //
2 // Copyright 2020 The ANGLE Project Authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file.
5 //
6 // VulkanFramebufferTest:
7 // Tests to validate our Vulkan framebuffer image allocation.
8 //
9
10 #include "test_utils/ANGLETest.h"
11 #include "test_utils/angle_test_instantiate.h"
12 // 'None' is defined as 'struct None {};' in
13 // third_party/googletest/src/googletest/include/gtest/internal/gtest-type-util.h.
14 // But 'None' is also defined as a numeric constant 0L in <X11/X.h>.
15 // So we need to include ANGLETest.h first to avoid this conflict.
16
17 #include "libANGLE/Context.h"
18 #include "libANGLE/angletypes.h"
19 #include "libANGLE/renderer/vulkan/ContextVk.h"
20 #include "libANGLE/renderer/vulkan/ProgramVk.h"
21 #include "libANGLE/renderer/vulkan/TextureVk.h"
22 #include "test_utils/gl_raii.h"
23 #include "util/EGLWindow.h"
24 #include "util/shader_utils.h"
25
26 using namespace angle;
27
28 namespace
29 {
30
31 class VulkanFramebufferTest : public ANGLETest
32 {
33 protected:
hackANGLE() const34 rx::ContextVk *hackANGLE() const
35 {
36 // Hack the angle!
37 const gl::Context *context = static_cast<gl::Context *>(getEGLWindow()->getContext());
38 return rx::GetImplAs<rx::ContextVk>(context);
39 }
40
hackTexture(GLuint handle) const41 rx::TextureVk *hackTexture(GLuint handle) const
42 {
43 // Hack the angle!
44 const gl::Context *context = static_cast<gl::Context *>(getEGLWindow()->getContext());
45 const gl::Texture *texture = context->getTexture({handle});
46 return rx::vk::GetImpl(texture);
47 }
48 };
49
50 // Test that framebuffer can be created from a mip-incomplete texture, and that its allocation only
51 // includes the framebuffer's attached mip.
TEST_P(VulkanFramebufferTest,TextureAttachmentMipIncomplete)52 TEST_P(VulkanFramebufferTest, TextureAttachmentMipIncomplete)
53 {
54 GLFramebuffer framebuffer;
55 glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
56
57 GLTexture texture;
58 glBindTexture(GL_TEXTURE_2D, texture);
59
60 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 100, 100, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
61 glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA8, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
62 glTexImage2D(GL_TEXTURE_2D, 2, GL_RGBA8, 5, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
63
64 // Set framebuffer to mip 0. Framebuffer should be complete, and make the texture allocate
65 // an image of only 1 level.
66 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
67 EXPECT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER);
68
69 glClearColor(0, 0, 0, 1.0f);
70 glClear(GL_COLOR_BUFFER_BIT);
71 EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::black);
72
73 // http://anglebug.com/4686: The Vulkan backend is allocating three mips of sizes 100x100,
74 // 50x50 and 25x25 instead of one mip of size 100x100.
75 ANGLE_SKIP_TEST_IF(IsVulkan());
76
77 rx::TextureVk *textureVk = hackTexture(texture);
78 EXPECT_EQ(textureVk->getImage().getLevelCount(), 1u);
79 }
80
81 // Test ensure that a R4G4B4A4 format sample only will actually uses R4G4B4A4 format instead of
82 // R8G8B8A8.
TEST_P(VulkanFramebufferTest,R4G4B4A4TextureSampleOnlyActuallyUses444Format)83 TEST_P(VulkanFramebufferTest, R4G4B4A4TextureSampleOnlyActuallyUses444Format)
84 {
85 rx::ContextVk *contextVk = hackANGLE();
86 rx::RendererVk *renderer = contextVk->getRenderer();
87 angle::FormatID formatID = angle::FormatID::R4G4B4A4_UNORM;
88
89 // Check if R4G4B4A4_UNORM is supported format.
90 bool isTexturable = renderer->hasImageFormatFeatureBits(
91 formatID,
92 VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT | VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT);
93 ANGLE_SKIP_TEST_IF(!isTexturable);
94
95 static constexpr GLsizei kTexWidth = 100;
96 static constexpr GLsizei kTexHeight = 100;
97 GLTexture texture;
98 glBindTexture(GL_TEXTURE_2D, texture);
99
100 const GLushort u16Color = 0xF00F; // red
101 std::vector<GLushort> pixels(kTexWidth * kTexHeight, u16Color);
102 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA4, kTexWidth, kTexHeight, 0, GL_RGBA,
103 GL_UNSIGNED_SHORT_4_4_4_4, pixels.data());
104 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
105 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
106 ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Texture2DLod(), essl3_shaders::fs::Texture2DLod());
107 glUseProgram(program);
108 GLint textureLocation = glGetUniformLocation(program, essl3_shaders::Texture2DUniform());
109 ASSERT_NE(-1, textureLocation);
110 GLint lodLocation = glGetUniformLocation(program, essl3_shaders::LodUniform());
111 ASSERT_NE(-1, lodLocation);
112 glActiveTexture(GL_TEXTURE0);
113 glBindTexture(GL_TEXTURE_2D, texture);
114 glClearColor(0, 1, 0, 1);
115 glClear(GL_COLOR_BUFFER_BIT);
116 glUniform1f(lodLocation, 0);
117 drawQuad(program, essl3_shaders::PositionAttrib(), 0.5f);
118 EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 255, 0, 0, 255);
119 ASSERT_GL_NO_ERROR();
120
121 rx::TextureVk *textureVk = hackTexture(texture);
122 EXPECT_EQ(textureVk->getImage().getActualFormatID(), formatID);
123 }
124
125 ANGLE_INSTANTIATE_TEST(VulkanFramebufferTest, ES3_VULKAN());
126
127 } // anonymous namespace
128