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/Display.h"
19 #include "libANGLE/angletypes.h"
20 #include "libANGLE/renderer/vulkan/ContextVk.h"
21 #include "libANGLE/renderer/vulkan/ProgramVk.h"
22 #include "libANGLE/renderer/vulkan/TextureVk.h"
23 #include "test_utils/gl_raii.h"
24 #include "util/EGLWindow.h"
25 #include "util/shader_utils.h"
26
27 using namespace angle;
28
29 namespace
30 {
31
32 class VulkanFramebufferTest : public ANGLETest<>
33 {
34 protected:
hackContext() const35 gl::Context *hackContext() const
36 {
37 egl::Display *display = static_cast<egl::Display *>(getEGLWindow()->getDisplay());
38 gl::ContextID contextID = {
39 static_cast<GLuint>(reinterpret_cast<uintptr_t>(getEGLWindow()->getContext()))};
40 return display->getContext(contextID);
41 }
42
hackANGLE() const43 rx::ContextVk *hackANGLE() const
44 {
45 // Hack the angle!
46 return rx::GetImplAs<rx::ContextVk>(hackContext());
47 }
48
hackTexture(GLuint handle) const49 rx::TextureVk *hackTexture(GLuint handle) const
50 {
51 // Hack the angle!
52 const gl::Context *context = hackContext();
53 const gl::Texture *texture = context->getTexture({handle});
54 return rx::vk::GetImpl(texture);
55 }
56 };
57
58 // Test that framebuffer can be created from a mip-incomplete texture, and that its allocation only
59 // includes the framebuffer's attached mip.
TEST_P(VulkanFramebufferTest,TextureAttachmentMipIncomplete)60 TEST_P(VulkanFramebufferTest, TextureAttachmentMipIncomplete)
61 {
62 GLFramebuffer framebuffer;
63 glBindFramebuffer(GL_FRAMEBUFFER, framebuffer);
64
65 GLTexture texture;
66 glBindTexture(GL_TEXTURE_2D, texture);
67
68 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 100, 100, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
69 glTexImage2D(GL_TEXTURE_2D, 1, GL_RGBA8, 2, 2, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
70 glTexImage2D(GL_TEXTURE_2D, 2, GL_RGBA8, 5, 8, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
71
72 // Set framebuffer to mip 0. Framebuffer should be complete, and make the texture allocate
73 // an image of only 1 level.
74 glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture, 0);
75 EXPECT_GL_FRAMEBUFFER_COMPLETE(GL_FRAMEBUFFER);
76
77 glClearColor(0, 0, 0, 1.0f);
78 glClear(GL_COLOR_BUFFER_BIT);
79 EXPECT_PIXEL_COLOR_EQ(0, 0, GLColor::black);
80
81 // http://anglebug.com/4686: The Vulkan backend is allocating three mips of sizes 100x100,
82 // 50x50 and 25x25 instead of one mip of size 100x100.
83 ANGLE_SKIP_TEST_IF(IsVulkan());
84
85 rx::TextureVk *textureVk = hackTexture(texture);
86 EXPECT_EQ(textureVk->getImage().getLevelCount(), 1u);
87 }
88
89 // Test ensure that a R4G4B4A4 format sample only will actually uses R4G4B4A4 format instead of
90 // R8G8B8A8.
TEST_P(VulkanFramebufferTest,R4G4B4A4TextureSampleOnlyActuallyUses444Format)91 TEST_P(VulkanFramebufferTest, R4G4B4A4TextureSampleOnlyActuallyUses444Format)
92 {
93 rx::ContextVk *contextVk = hackANGLE();
94 rx::RendererVk *renderer = contextVk->getRenderer();
95 angle::FormatID formatID = angle::FormatID::R4G4B4A4_UNORM;
96
97 // Check if R4G4B4A4_UNORM is supported format.
98 bool isTexturable = renderer->hasImageFormatFeatureBits(
99 formatID,
100 VK_FORMAT_FEATURE_SAMPLED_IMAGE_BIT | VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT);
101 ANGLE_SKIP_TEST_IF(!isTexturable);
102
103 static constexpr GLsizei kTexWidth = 100;
104 static constexpr GLsizei kTexHeight = 100;
105 GLTexture texture;
106 glBindTexture(GL_TEXTURE_2D, texture);
107
108 const GLushort u16Color = 0xF00F; // red
109 std::vector<GLushort> pixels(kTexWidth * kTexHeight, u16Color);
110 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA4, kTexWidth, kTexHeight, 0, GL_RGBA,
111 GL_UNSIGNED_SHORT_4_4_4_4, pixels.data());
112 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
113 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
114 ANGLE_GL_PROGRAM(program, essl3_shaders::vs::Texture2DLod(), essl3_shaders::fs::Texture2DLod());
115 glUseProgram(program);
116 GLint textureLocation = glGetUniformLocation(program, essl3_shaders::Texture2DUniform());
117 ASSERT_NE(-1, textureLocation);
118 GLint lodLocation = glGetUniformLocation(program, essl3_shaders::LodUniform());
119 ASSERT_NE(-1, lodLocation);
120 glActiveTexture(GL_TEXTURE0);
121 glBindTexture(GL_TEXTURE_2D, texture);
122 glClearColor(0, 1, 0, 1);
123 glClear(GL_COLOR_BUFFER_BIT);
124 glUniform1f(lodLocation, 0);
125 drawQuad(program, essl3_shaders::PositionAttrib(), 0.5f);
126 EXPECT_PIXEL_EQ(getWindowWidth() / 2, getWindowHeight() / 2, 255, 0, 0, 255);
127 ASSERT_GL_NO_ERROR();
128
129 rx::TextureVk *textureVk = hackTexture(texture);
130 EXPECT_EQ(textureVk->getImage().getActualFormatID(), formatID);
131 }
132
133 ANGLE_INSTANTIATE_TEST(VulkanFramebufferTest, ES3_VULKAN());
134
135 } // anonymous namespace
136