1 /*
2 * Copyright (c) 2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "gpu_sampler_gles.h"
17
18 #include <render/device/gpu_resource_desc.h>
19 #include <render/namespace.h>
20
21 #include "gles/device_gles.h"
22 #include "gles/gl_functions.h"
23 #include "util/log.h"
24
RENDER_BEGIN_NAMESPACE()25 RENDER_BEGIN_NAMESPACE()
26 GpuSamplerGLES::GpuSamplerGLES(Device& device, const GpuSamplerDesc& desc) : device_((DeviceGLES&)device), desc_(desc)
27 {
28 PLUGIN_ASSERT(device_.IsActive());
29 // NOTE: delay Create?
30 constexpr GLint magFilter[] = {
31 GL_NEAREST, // min is CORE_FILTER_NEAREST
32 GL_LINEAR // min is CORE_FILTER_LINEAR
33 };
34 constexpr GLint minFilter[] = {
35 GL_NEAREST_MIPMAP_NEAREST, // min = CORE_FILTER_NEAREST mip = CORE_FILTER_NEAREST
36 GL_LINEAR_MIPMAP_NEAREST, // min = CORE_FILTER_LINEAR mip = CORE_FILTER_NEAREST
37 GL_NEAREST_MIPMAP_LINEAR, // min = CORE_FILTER_NEAREST mip = CORE_FILTER_LINEAR
38 GL_LINEAR_MIPMAP_LINEAR, // min = CORE_FILTER_LINEAR mip = CORE_FILTER_LINEAR
39 };
40 constexpr GLint addressMode[] = {
41 GL_REPEAT, // CORE_SAMPLER_ADDRESS_MODE_REPEAT = 0,
42 GL_MIRRORED_REPEAT, // CORE_SAMPLER_ADDRESS_MODE_MIRRORED_REPEAT = 1,
43 GL_CLAMP_TO_EDGE, // CORE_SAMPLER_ADDRESS_MODE_CLAMP_TO_EDGE = 2,
44
45 // requires gles 3.2
46 // CORE_SAMPLER_ADDRESS_MODE_CLAMP_TO_BORDER = 3, requires GL_EXT_texture_border_clamp
47 // if GLES 3.1
48 GL_CLAMP_TO_BORDER,
49
50 // Not supported in gles
51 GL_CLAMP_TO_EDGE, // GL_MIRROR_CLAMP_TO_EDGE,//CORE_SAMPLER_ADDRESS_MODE_MIRROR_CLAMP_TO_EDGE = 4,
52 };
53 constexpr GLint compareMode[] = {
54 GL_NEVER, // CORE_COMPARE_OP_NEVER is 0,
55 GL_LESS, // CORE_COMPARE_OP_LESS is 1,
56 GL_EQUAL, // CORE_COMPARE_OP_EQUAL is 2,
57 GL_LEQUAL, // CORE_COMPARE_OP_LESS_OR_EQUAL is 3,
58 GL_GREATER, // CORE_COMPARE_OP_GREATER is 4,
59 GL_NOTEQUAL, // CORE_COMPARE_OP_NOT_EQUAL is 5,
60 GL_GEQUAL, // CORE_COMPARE_OP_GREATER_OR_EQUAL is 6,
61 GL_ALWAYS // CORE_COMPARE_OP_ALWAYS is 7,
62 // CORE_COMPARE_OP_MAX_ENUM is 0x7FFFFFFF
63 };
64
65 glGenSamplers(1, &plat_.sampler);
66 glSamplerParameteri(plat_.sampler, GL_TEXTURE_MAG_FILTER, magFilter[desc.magFilter]);
67
68 glSamplerParameteri(plat_.sampler, GL_TEXTURE_MIN_FILTER, minFilter[desc.minFilter + desc.mipMapMode * 2]);
69
70 glSamplerParameteri(plat_.sampler, GL_TEXTURE_WRAP_S, addressMode[desc.addressModeU]);
71 glSamplerParameteri(plat_.sampler, GL_TEXTURE_WRAP_T, addressMode[desc.addressModeV]);
72 glSamplerParameteri(plat_.sampler, GL_TEXTURE_WRAP_R, addressMode[desc.addressModeW]);
73
74 // "desc.mipLodBias" can not be set here on GLES, needs a shader work around if needed!
75 // "desc.enableAnisotropy" is NOT SUPPORTED! it requires EXT_texture_filter_anisotropic.
76 if (desc.enableCompareOp) {
77 glSamplerParameteri(plat_.sampler, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_REF_TO_TEXTURE);
78 glSamplerParameteri(plat_.sampler, GL_TEXTURE_COMPARE_FUNC, compareMode[desc.compareOp]);
79 } else {
80 glSamplerParameteri(plat_.sampler, GL_TEXTURE_COMPARE_MODE, GL_NONE);
81 glSamplerParameteri(plat_.sampler, GL_TEXTURE_COMPARE_FUNC, GL_ALWAYS);
82 }
83
84 glSamplerParameterf(plat_.sampler, GL_TEXTURE_MIN_LOD, desc.minLod);
85 glSamplerParameterf(plat_.sampler, GL_TEXTURE_MAX_LOD, desc.maxLod);
86
87 float color[4] = { 0.f };
88 switch (desc.borderColor) {
89 case CORE_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK:
90 case CORE_BORDER_COLOR_INT_TRANSPARENT_BLACK: {
91 color[0] = color[1] = color[2] = color[3] = 0.f;
92 break;
93 }
94 case CORE_BORDER_COLOR_FLOAT_OPAQUE_BLACK:
95 case CORE_BORDER_COLOR_INT_OPAQUE_BLACK: {
96 color[0] = color[1] = color[2] = 0.f;
97 color[3] = 1.f;
98 break;
99 }
100 case CORE_BORDER_COLOR_FLOAT_OPAQUE_WHITE:
101 case CORE_BORDER_COLOR_INT_OPAQUE_WHITE: {
102 color[0] = color[1] = color[2] = color[3] = 1.f;
103 break;
104 }
105 default:
106 color[0] = color[1] = color[2] = color[3] = 0.f;
107 break;
108 }
109 glSamplerParameterfv(plat_.sampler, GL_TEXTURE_BORDER_COLOR, color);
110
111 // "desc.enableUnnormalizedCoordinates" is NOT SUPPORTED!
112 }
113
~GpuSamplerGLES()114 GpuSamplerGLES::~GpuSamplerGLES()
115 {
116 if (plat_.sampler) {
117 PLUGIN_ASSERT(device_.IsActive());
118 device_.DeleteSampler(plat_.sampler);
119 }
120 }
121
GetDesc() const122 const GpuSamplerDesc& GpuSamplerGLES::GetDesc() const
123 {
124 return desc_;
125 }
126
GetPlatformData() const127 const GpuSamplerPlatformDataGL& GpuSamplerGLES::GetPlatformData() const
128 {
129 return plat_;
130 }
131 RENDER_END_NAMESPACE()
132