remove unused gaussian shader

src/mbgl/renderer/painter.cpp

@@ -26,7 +26,6 @@
 #include <mbgl/shader/raster_shader.hpp>
 #include <mbgl/shader/sdf_shader.hpp>
 #include <mbgl/shader/dot_shader.hpp>
-#include <mbgl/shader/gaussian_shader.hpp>
 #include <mbgl/shader/box_shader.hpp>
 
 #include <mbgl/util/constants.hpp>
@@ -67,7 +66,6 @@ void Painter::setup() {
     assert(sdfGlyphShader);
     assert(sdfIconShader);
     assert(dotShader);
-    assert(gaussianShader);
 
 
     // Blending
@@ -101,7 +99,6 @@ void Painter::setupShaders() {
     if (!sdfGlyphShader) sdfGlyphShader = std::make_unique<SDFGlyphShader>();
     if (!sdfIconShader) sdfIconShader = std::make_unique<SDFIconShader>();
     if (!dotShader) dotShader = std::make_unique<DotShader>();
-    if (!gaussianShader) gaussianShader = std::make_unique<GaussianShader>();
     if (!collisionBoxShader) collisionBoxShader = std::make_unique<CollisionBoxShader>();
 }
 

src/mbgl/renderer/painter.hpp

@@ -56,7 +56,6 @@ class RasterShader;
 class SDFGlyphShader;
 class SDFIconShader;
 class DotShader;
-class GaussianShader;
 class CollisionBoxShader;
 
 struct ClipID;
@@ -227,7 +226,6 @@ public:
     std::unique_ptr<SDFGlyphShader> sdfGlyphShader;
     std::unique_ptr<SDFIconShader> sdfIconShader;
     std::unique_ptr<DotShader> dotShader;
-    std::unique_ptr<GaussianShader> gaussianShader;
     std::unique_ptr<CollisionBoxShader> collisionBoxShader;
 
     StaticVertexBuffer backgroundBuffer = {
@@ -252,7 +250,6 @@ public:
 
     VertexArrayObject coveringPlainArray;
     VertexArrayObject coveringRasterArray;
-    VertexArrayObject coveringGaussianArray;
 
     // Set up the tile boundary lines we're using to draw the tile outlines.
     StaticVertexBuffer tileBorderBuffer = {

src/mbgl/shader/gaussian.fragment.glsl

@@ -1,11 +0,0 @@
-uniform sampler2D u_image;
-
-varying vec2 v_coords[3];
-
-void main() {
-    vec4 sum = vec4(0.0);
-    sum += texture2D(u_image, v_coords[0]) * 0.40261994689424746;
-    sum += texture2D(u_image, v_coords[1]) * 0.2986900265528763;
-    sum += texture2D(u_image, v_coords[2]) * 0.2986900265528763;
-    gl_FragColor = sum;
-}

src/mbgl/shader/gaussian.vertex.glsl

@@ -1,15 +0,0 @@
-attribute vec2 a_pos;
-
-uniform mat4 u_matrix;
-uniform vec2 u_offset;
-
-varying vec2 v_coords[3];
-
-void main() {
-    gl_Position = u_matrix * vec4(a_pos, 0, 1);
-
-    vec2 tex = gl_Position.xy / 2.0 + 0.5;
-    v_coords[0] = tex;
-    v_coords[1] = tex + u_offset * 1.1824255238063563;
-    v_coords[2] = tex - u_offset * 1.1824255238063563;
-}

src/mbgl/shader/gaussian_shader.cpp

@@ -1,21 +0,0 @@
-#include <mbgl/shader/gaussian_shader.hpp>
-#include <mbgl/shader/shaders.hpp>
-#include <mbgl/platform/gl.hpp>
-
-#include <cstdio>
-
-using namespace mbgl;
-
-GaussianShader::GaussianShader()
-    : Shader(
-         "gaussian",
-         shaders[GAUSSIAN_SHADER].vertex,
-         shaders[GAUSSIAN_SHADER].fragment
-         ) {
-    a_pos = MBGL_CHECK_ERROR(glGetAttribLocation(program, "a_pos"));
-}
-
-void GaussianShader::bind(char *offset) {
-    MBGL_CHECK_ERROR(glEnableVertexAttribArray(a_pos));
-    MBGL_CHECK_ERROR(glVertexAttribPointer(a_pos, 2, GL_SHORT, false, 0, offset));
-}

src/mbgl/shader/gaussian_shader.hpp

@@ -1,25 +0,0 @@
-#ifndef MBGL_RENDERER_SHADER_GAUSSIAN
-#define MBGL_RENDERER_SHADER_GAUSSIAN
-
-#include <mbgl/shader/shader.hpp>
-#include <mbgl/shader/uniform.hpp>
-
-namespace mbgl {
-
-class GaussianShader : public Shader {
-public:
-    GaussianShader();
-
-    void bind(char *offset);
-
-    UniformMatrix<4>              u_matrix = {"u_matrix", *this};
-    Uniform<std::array<float, 2>> u_offset = {"u_offset", *this};
-    Uniform<int32_t>              u_image  = {"u_image",  *this};
-
-private:
-    int32_t a_pos = -1;
-};
-
-}
-
-#endif