1 //
2 // Copyright 2018 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 // vk_utils:
7 // Helper functions for the Vulkan Caps.
8 //
9
10 #ifndef LIBANGLE_RENDERER_VULKAN_VK_CAPS_UTILS_H_
11 #define LIBANGLE_RENDERER_VULKAN_VK_CAPS_UTILS_H_
12
13 #include "common/vulkan/vk_headers.h"
14 #include "libANGLE/Config.h"
15
16 namespace gl
17 {
18 struct Limitations;
19 struct Extensions;
20 class TextureCapsMap;
21 struct Caps;
22 struct TextureCaps;
23 struct InternalFormat;
24 } // namespace gl
25
26 namespace rx
27 {
28 struct FeaturesVk;
29
30 class DisplayVk;
31
32 namespace egl_vk
33 {
34 constexpr GLenum kConfigDepthStencilFormats[] = {GL_NONE, GL_DEPTH24_STENCIL8, GL_DEPTH_COMPONENT24,
35 GL_DEPTH_COMPONENT16};
36
37 // Permutes over all combinations of color format, depth stencil format and sample count and
38 // generates a basic config which is passed to DisplayVk::checkConfigSupport.
39 egl::ConfigSet GenerateConfigs(const GLenum *colorFormats,
40 size_t colorFormatsCount,
41 const GLenum *depthStencilFormats,
42 size_t depthStencilFormatCount,
43 DisplayVk *display);
44
45 template <size_t ColorFormatCount, size_t DepthStencilFormatCount>
GenerateConfigs(const GLenum (& colorFormats)[ColorFormatCount],const GLenum (& depthStencilFormats)[DepthStencilFormatCount],DisplayVk * display)46 egl::ConfigSet GenerateConfigs(const GLenum (&colorFormats)[ColorFormatCount],
47 const GLenum (&depthStencilFormats)[DepthStencilFormatCount],
48 DisplayVk *display)
49 {
50 return GenerateConfigs(colorFormats, ColorFormatCount, depthStencilFormats,
51 DepthStencilFormatCount, display);
52 }
53
GetConfigCaveat(GLenum format)54 static ANGLE_INLINE EGLenum GetConfigCaveat(GLenum format)
55 {
56 // Default EGL config sorting rule will result in rgb10a2 having higher precedence than rgb8
57 // By marking `rgb10a2` as a slow config we switch the order. This ensures that we dont
58 // return rgb10a2 at the top of the config list
59
60 switch (format)
61 {
62 // For now we only mark rgb10a2 as a slow config
63 case GL_RGB10_A2_EXT:
64 return EGL_SLOW_CONFIG;
65 default:
66 return EGL_NONE;
67 }
68 }
69
70 } // namespace egl_vk
71
72 namespace vk
73 {
74 // Checks support for extensions required for GLES 3.2. If any of those extensions is missing, the
75 // context version should be capped to GLES 3.1 by default.
76 bool CanSupportGLES32(const gl::Extensions &nativeExtensions);
77
78 // Functions that determine support for a feature or extension, used both to advertise support for
79 // an extension, and to determine if a context version can be supported.
80 bool CanSupportTransformFeedbackExtension(
81 const VkPhysicalDeviceTransformFeedbackFeaturesEXT &xfbFeatures);
82 bool CanSupportTransformFeedbackEmulation(const VkPhysicalDeviceFeatures &features);
83 } // namespace vk
84
85 } // namespace rx
86
87 #endif
88