cc: Refactored shader locations

cc/output/shader.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/output/shader.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/logging.h"
@@ skipping 126 matching lines @@
       return shader_string;
     default:
       NOTREACHED();
       break;
   }
   return shader_string;
 }
 
 }  // namespace
 
+ShaderLocations::ShaderLocations() {
+}
+
 TexCoordPrecision TexCoordPrecisionRequired(GLES2Interface* context,
                                             int* highp_threshold_cache,
                                             int highp_threshold_min,
                                             const gfx::Point& max_coordinate) {
   return TexCoordPrecisionRequired(context,
                                    highp_threshold_cache,
                                    highp_threshold_min,
                                    max_coordinate.x(),
                                    max_coordinate.y());
 }
@@ skipping 183 matching lines @@
     void main() {
       int quad_index = int(a_index * 0.25);  // NOLINT
       gl_Position = matrix[quad_index] * a_position;
       TexCoordPrecision vec4 texTrans = texTransform[quad_index];
       v_texCoord = a_texCoord * texTrans.zw + texTrans.xy;
       v_alpha = opacity[int(a_index)];  // NOLINT
     }
   });
 }
 
+void VertexShaderPosTexTransform::FillLocations(
+    ShaderLocations* locations) const {
+  locations->matrix = matrix_location();
+  locations->tex_transform = tex_transform_location();
+}
+
 std::string VertexShaderPosTexIdentity::GetShaderString() const {
   return VERTEX_SHADER(GetShaderHead(), GetShaderBody());
 }
 
 std::string VertexShaderPosTexIdentity::GetShaderHead() {
   return SHADER0([]() {
     attribute vec4 a_position;
     varying TexCoordPrecision vec2 v_texCoord;
   });
 }
@@ skipping 193 matching lines @@
                           dot(edge[2], screen_pos), dot(edge[3], screen_pos)) *
                      gl_Position.w;
       edge_dist[1] = vec4(dot(edge[4], screen_pos), dot(edge[5], screen_pos),
                           dot(edge[6], screen_pos), dot(edge[7], screen_pos)) *
                      gl_Position.w;
       v_texCoord = (pos.xy + vec2(0.5)) * texTrans.zw + texTrans.xy;
     }
   });
 }
 
+void VertexShaderQuadTexTransformAA::FillLocations(
+    ShaderLocations* locations) const {
+  locations->quad = quad_location();
+  locations->edge = edge_location();
+  locations->viewport = viewport_location();
+  locations->matrix = matrix_location();
+  locations->tex_transform = tex_transform_location();
+}
+
+
 VertexShaderTile::VertexShaderTile()
     : matrix_location_(-1),
       quad_location_(-1),
       vertex_tex_transform_location_(-1) {
 }
 
 void VertexShaderTile::Init(GLES2Interface* context,
                             unsigned program,
                             int* base_uniform_index) {
   static const char* uniforms[] = {
@@ skipping 525 matching lines @@
 
 std::string FragmentShaderRGBATexAlpha::GetShaderBody() {
   return SHADER0([]() {
     void main() {
       vec4 texColor = TextureLookup(s_texture, v_texCoord);
       gl_FragColor = ApplyBlendMode(texColor * alpha);
     }
   });
 }
 
+void FragmentShaderRGBATexAlpha::FillLocations(
+    ShaderLocations* locations) const {
+  locations->sampler = sampler_location();
+  locations->alpha = alpha_location();
+  locations->backdrop = backdrop_location();
+  locations->backdrop_rect = backdrop_rect_location();
+}
+
 std::string FragmentShaderRGBATexColorMatrixAlpha::GetShaderString(
     TexCoordPrecision precision,
     SamplerType sampler) const {
   return FRAGMENT_SHADER(GetShaderHead(), GetShaderBody());
 }
 
 std::string FragmentShaderRGBATexColorMatrixAlpha::GetShaderHead() {
   return SHADER0([]() {
     precision mediump float;
     varying TexCoordPrecision vec2 v_texCoord;
@@ skipping 11 matching lines @@
       float nonZeroAlpha = max(texColor.a, 0.00001);
       texColor = vec4(texColor.rgb / nonZeroAlpha, nonZeroAlpha);
       texColor = colorMatrix * texColor + colorOffset;
       texColor.rgb *= texColor.a;
       texColor = clamp(texColor, 0.0, 1.0);
       gl_FragColor = ApplyBlendMode(texColor * alpha);
     }
   });
 }
 
+void FragmentShaderRGBATexColorMatrixAlpha::FillLocations(
+    ShaderLocations* locations) const {
+  locations->sampler = sampler_location();
+  locations->alpha = alpha_location();
+  locations->color_matrix = color_matrix_location();
+  locations->color_offset = color_offset_location();
+  locations->backdrop = backdrop_location();
+  locations->backdrop_rect = backdrop_rect_location();
+}
+
 std::string FragmentShaderRGBATexVaryingAlpha::GetShaderString(
     TexCoordPrecision precision,
     SamplerType sampler) const {
   return FRAGMENT_SHADER(GetShaderHead(), GetShaderBody());
 }
 
 std::string FragmentShaderRGBATexVaryingAlpha::GetShaderHead() {
   return SHADER0([]() {
     precision mediump float;
     varying TexCoordPrecision vec2 v_texCoord;
@@ skipping 249 matching lines @@
     void main() {
       vec4 texColor = TextureLookup(s_texture, v_texCoord);
       vec4 d4 = min(edge_dist[0], edge_dist[1]);
       vec2 d2 = min(d4.xz, d4.yw);
       float aa = clamp(gl_FragCoord.w * min(d2.x, d2.y), 0.0, 1.0);
       gl_FragColor = ApplyBlendMode(texColor * alpha * aa);
     }
   });
 }
 
+void FragmentShaderRGBATexAlphaAA::FillLocations(
+    ShaderLocations* locations) const {
+  locations->sampler = sampler_location();
+  locations->alpha = alpha_location();
+  locations->backdrop = backdrop_location();
+  locations->backdrop_rect = backdrop_rect_location();
+}
+
 FragmentTexClampAlphaAABinding::FragmentTexClampAlphaAABinding()
     : sampler_location_(-1),
       alpha_location_(-1),
       fragment_tex_transform_location_(-1) {
 }
 
 void FragmentTexClampAlphaAABinding::Init(GLES2Interface* context,
                                           unsigned program,
                                           int* base_uniform_index) {
   static const char* uniforms[] = {
@@ skipping 135 matching lines @@
       vec4 texColor = texture2D(s_texture, v_texCoord);
       TexCoordPrecision vec2 maskTexCoord =
           vec2(maskTexCoordOffset.x + v_texCoord.x * maskTexCoordScale.x,
                maskTexCoordOffset.y + v_texCoord.y * maskTexCoordScale.y);
       vec4 maskColor = TextureLookup(s_mask, maskTexCoord);
       gl_FragColor = ApplyBlendMode(texColor * alpha * maskColor.w);
     }
   });
 }
 
+void FragmentShaderRGBATexAlphaMask::FillLocations(
+    ShaderLocations* locations) const {
+  locations->sampler = sampler_location();
+  locations->mask_sampler = mask_sampler_location();
+  locations->mask_tex_coord_scale = mask_tex_coord_scale_location();
+  locations->mask_tex_coord_offset = mask_tex_coord_offset_location();
+  locations->alpha = alpha_location();
+  locations->backdrop = backdrop_location();
+  locations->backdrop_rect = backdrop_rect_location();
+}
+
 FragmentShaderRGBATexAlphaMaskAA::FragmentShaderRGBATexAlphaMaskAA()
     : sampler_location_(-1),
       mask_sampler_location_(-1),
       alpha_location_(-1),
       mask_tex_coord_scale_location_(-1),
       mask_tex_coord_offset_location_(-1) {
 }
 
 void FragmentShaderRGBATexAlphaMaskAA::Init(GLES2Interface* context,
                                             unsigned program,
@@ skipping 50 matching lines @@
                maskTexCoordOffset.y + v_texCoord.y * maskTexCoordScale.y);
       vec4 maskColor = TextureLookup(s_mask, maskTexCoord);
       vec4 d4 = min(edge_dist[0], edge_dist[1]);
       vec2 d2 = min(d4.xz, d4.yw);
       float aa = clamp(gl_FragCoord.w * min(d2.x, d2.y), 0.0, 1.0);
       gl_FragColor = ApplyBlendMode(texColor * alpha * maskColor.w * aa);
     }
   });
 }
 
+void FragmentShaderRGBATexAlphaMaskAA::FillLocations(
+    ShaderLocations* locations) const {
+  locations->sampler = sampler_location();
+  locations->mask_sampler = mask_sampler_location();
+  locations->mask_tex_coord_scale = mask_tex_coord_scale_location();
+  locations->mask_tex_coord_offset = mask_tex_coord_offset_location();
+  locations->alpha = alpha_location();
+  locations->backdrop = backdrop_location();
+  locations->backdrop_rect = backdrop_rect_location();
+}
+
 FragmentShaderRGBATexAlphaMaskColorMatrixAA::
     FragmentShaderRGBATexAlphaMaskColorMatrixAA()
     : sampler_location_(-1),
       mask_sampler_location_(-1),
       alpha_location_(-1),
       mask_tex_coord_scale_location_(-1),
       color_matrix_location_(-1),
       color_offset_location_(-1) {
 }
 
@@ skipping 64 matching lines @@
                maskTexCoordOffset.y + v_texCoord.y * maskTexCoordScale.y);
       vec4 maskColor = TextureLookup(s_mask, maskTexCoord);
       vec4 d4 = min(edge_dist[0], edge_dist[1]);
       vec2 d2 = min(d4.xz, d4.yw);
       float aa = clamp(gl_FragCoord.w * min(d2.x, d2.y), 0.0, 1.0);
       gl_FragColor = ApplyBlendMode(texColor * alpha * maskColor.w * aa);
     }
   });
 }
 
+void FragmentShaderRGBATexAlphaMaskColorMatrixAA::FillLocations(
+    ShaderLocations* locations) const {
+  locations->sampler = sampler_location();
+  locations->alpha = alpha_location();
+  locations->mask_sampler = mask_sampler_location();
+  locations->mask_tex_coord_scale = mask_tex_coord_scale_location();
+  locations->mask_tex_coord_offset = mask_tex_coord_offset_location();
+  locations->color_matrix = color_matrix_location();
+  locations->color_offset = color_offset_location();
+  locations->backdrop = backdrop_location();
+  locations->backdrop_rect = backdrop_rect_location();
+}
+
 FragmentShaderRGBATexAlphaColorMatrixAA::
     FragmentShaderRGBATexAlphaColorMatrixAA()
     : sampler_location_(-1),
       alpha_location_(-1),
       color_matrix_location_(-1),
       color_offset_location_(-1) {
 }
 
 void FragmentShaderRGBATexAlphaColorMatrixAA::Init(GLES2Interface* context,
                                                    unsigned program,
@@ skipping 44 matching lines @@
       texColor.rgb *= texColor.a;
       texColor = clamp(texColor, 0.0, 1.0);
       vec4 d4 = min(edge_dist[0], edge_dist[1]);
       vec2 d2 = min(d4.xz, d4.yw);
       float aa = clamp(gl_FragCoord.w * min(d2.x, d2.y), 0.0, 1.0);
       gl_FragColor = ApplyBlendMode(texColor * alpha * aa);
     }
   });
 }
 
+void FragmentShaderRGBATexAlphaColorMatrixAA::FillLocations(
+    ShaderLocations* locations) const {
+  locations->sampler = sampler_location();
+  locations->alpha = alpha_location();
+  locations->color_matrix = color_matrix_location();
+  locations->color_offset = color_offset_location();
+  locations->backdrop = backdrop_location();
+  locations->backdrop_rect = backdrop_rect_location();
+}
+
 FragmentShaderRGBATexAlphaMaskColorMatrix::
     FragmentShaderRGBATexAlphaMaskColorMatrix()
     : sampler_location_(-1),
       mask_sampler_location_(-1),
       alpha_location_(-1),
       mask_tex_coord_scale_location_(-1) {
 }
 
 void FragmentShaderRGBATexAlphaMaskColorMatrix::Init(GLES2Interface* context,
                                                      unsigned program,
@@ skipping 57 matching lines @@
       texColor = clamp(texColor, 0.0, 1.0);
       TexCoordPrecision vec2 maskTexCoord =
           vec2(maskTexCoordOffset.x + v_texCoord.x * maskTexCoordScale.x,
                maskTexCoordOffset.y + v_texCoord.y * maskTexCoordScale.y);
       vec4 maskColor = TextureLookup(s_mask, maskTexCoord);
       gl_FragColor = ApplyBlendMode(texColor * alpha * maskColor.w);
     }
   });
 }
 
+void FragmentShaderRGBATexAlphaMaskColorMatrix::FillLocations(
+    ShaderLocations* locations) const {
+  locations->sampler = sampler_location();
+  locations->mask_sampler = mask_sampler_location();
+  locations->mask_tex_coord_scale = mask_tex_coord_scale_location();
+  locations->mask_tex_coord_offset = mask_tex_coord_offset_location();
+  locations->alpha = alpha_location();
+  locations->color_matrix = color_matrix_location();
+  locations->color_offset = color_offset_location();
+  locations->backdrop = backdrop_location();
+  locations->backdrop_rect = backdrop_rect_location();
+}
+
 FragmentShaderYUVVideo::FragmentShaderYUVVideo()
     : y_texture_location_(-1),
       u_texture_location_(-1),
       v_texture_location_(-1),
       alpha_location_(-1),
       yuv_matrix_location_(-1),
       yuv_adj_location_(-1),
       clamp_rect_location_(-1) {
 }
 
@@ skipping 272 matching lines @@
       vec2 texCoord =
           clamp(v_texCoord, 0.0, 1.0) * texTransform.zw + texTransform.xy;
       vec2 coord = mod(floor(texCoord * frequency * 2.0), 2.0);
       float picker = abs(coord.x - coord.y);  // NOLINT
       gl_FragColor = mix(color1, color2, picker) * alpha;
     }
   });
 }
 
 }  // namespace cc