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| 1 // Copyright 2011 The Chromium Authors. All rights reserved. | 1 // Copyright 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "cc/output/shader.h" | 5 #include "cc/output/shader.h" |
| 6 | 6 |
| 7 #include <algorithm> | 7 #include <algorithm> |
| 8 | 8 |
| 9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
| 10 #include "base/logging.h" | 10 #include "base/logging.h" |
| 11 #include "cc/output/gl_renderer.h" // For the GLC() macro. | |
| 12 #include "gpu/command_buffer/client/gles2_interface.h" | 11 #include "gpu/command_buffer/client/gles2_interface.h" |
| 12 #include "ui/gfx/geometry/point.h" |
| 13 #include "ui/gfx/geometry/size.h" |
| 13 | 14 |
| 14 template <size_t size> | 15 template <size_t size> |
| 15 std::string StripLambda(const char(&shader)[size]) { | 16 std::string StripLambda(const char(&shader)[size]) { |
| 16 // Must contain at least "[]() {}" and trailing null (included in size). | 17 // Must contain at least "[]() {}" and trailing null (included in size). |
| 17 static_assert(size >= 8, | 18 static_assert(size >= 8, |
| 18 "String passed to StripLambda must be at least 8 characters"); | 19 "String passed to StripLambda must be at least 8 characters"); |
| 19 DCHECK_EQ(strncmp("[]() {", shader, 6), 0); | 20 DCHECK_EQ(strncmp("[]() {", shader, 6), 0); |
| 20 DCHECK_EQ(shader[size - 2], '}'); | 21 DCHECK_EQ(shader[size - 2], '}'); |
| 21 return std::string(shader + 6, shader + size - 2); | 22 return std::string(shader + 6, shader + size - 2); |
| 22 } | 23 } |
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| 89 int highp_threshold_min, | 90 int highp_threshold_min, |
| 90 int x, | 91 int x, |
| 91 int y) { | 92 int y) { |
| 92 if (*highp_threshold_cache == 0) { | 93 if (*highp_threshold_cache == 0) { |
| 93 // Initialize range and precision with minimum spec values for when | 94 // Initialize range and precision with minimum spec values for when |
| 94 // GetShaderPrecisionFormat is a test stub. | 95 // GetShaderPrecisionFormat is a test stub. |
| 95 // TODO(brianderson): Implement better stubs of GetShaderPrecisionFormat | 96 // TODO(brianderson): Implement better stubs of GetShaderPrecisionFormat |
| 96 // everywhere. | 97 // everywhere. |
| 97 GLint range[2] = {14, 14}; | 98 GLint range[2] = {14, 14}; |
| 98 GLint precision = 10; | 99 GLint precision = 10; |
| 99 GLC(context, | 100 context->GetShaderPrecisionFormat(GL_FRAGMENT_SHADER, GL_MEDIUM_FLOAT, |
| 100 context->GetShaderPrecisionFormat( | 101 range, &precision); |
| 101 GL_FRAGMENT_SHADER, GL_MEDIUM_FLOAT, range, &precision)); | |
| 102 *highp_threshold_cache = 1 << precision; | 102 *highp_threshold_cache = 1 << precision; |
| 103 } | 103 } |
| 104 | 104 |
| 105 int highp_threshold = std::max(*highp_threshold_cache, highp_threshold_min); | 105 int highp_threshold = std::max(*highp_threshold_cache, highp_threshold_min); |
| 106 if (x > highp_threshold || y > highp_threshold) | 106 if (x > highp_threshold || y > highp_threshold) |
| 107 return TEX_COORD_PRECISION_HIGH; | 107 return TEX_COORD_PRECISION_HIGH; |
| 108 return TEX_COORD_PRECISION_MEDIUM; | 108 return TEX_COORD_PRECISION_MEDIUM; |
| 109 } | 109 } |
| 110 | 110 |
| 111 static std::string SetFragmentSamplerType(SamplerType requested_type, | 111 static std::string SetFragmentSamplerType(SamplerType requested_type, |
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| 2295 vec2 texCoord = | 2295 vec2 texCoord = |
| 2296 clamp(v_texCoord, 0.0, 1.0) * texTransform.zw + texTransform.xy; | 2296 clamp(v_texCoord, 0.0, 1.0) * texTransform.zw + texTransform.xy; |
| 2297 vec2 coord = mod(floor(texCoord * frequency * 2.0), 2.0); | 2297 vec2 coord = mod(floor(texCoord * frequency * 2.0), 2.0); |
| 2298 float picker = abs(coord.x - coord.y); // NOLINT | 2298 float picker = abs(coord.x - coord.y); // NOLINT |
| 2299 gl_FragColor = mix(color1, color2, picker) * alpha; | 2299 gl_FragColor = mix(color1, color2, picker) * alpha; |
| 2300 } | 2300 } |
| 2301 }); | 2301 }); |
| 2302 } | 2302 } |
| 2303 | 2303 |
| 2304 } // namespace cc | 2304 } // namespace cc |
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