1 files changed, 60 insertions, 0 deletions
diff --git a/src/mbgl/shader/icon_shader.cpp b/src/mbgl/shader/icon_shader.cpp
new file mode 100644
index 0000000000..5c54177eb6
--- /dev/null
+++ b/src/mbgl/shader/icon_shader.cpp
@@ -0,0 +1,60 @@
+#include <mbgl/shader/icon_shader.hpp>
+#include <mbgl/shader/shaders.hpp>
+#include <mbgl/platform/gl.hpp>
+
+#include <cstdio>
+
+using namespace mbgl;
+
+IconShader::IconShader()
+    : Shader(
+         "icon",
+         shaders[ICON_SHADER].vertex,
+         shaders[ICON_SHADER].fragment
+         ) {
+    if (!valid) {
+        fprintf(stderr, "invalid icon shader\n");
+        return;
+    }
+
+    a_pos = glGetAttribLocation(program, "a_pos");
+    a_offset = glGetAttribLocation(program, "a_offset");
+    a_tex = glGetAttribLocation(program, "a_tex");
+    a_angle = glGetAttribLocation(program, "a_angle");
+    a_minzoom = glGetAttribLocation(program, "a_minzoom");
+    a_maxzoom = glGetAttribLocation(program, "a_maxzoom");
+    a_rangeend = glGetAttribLocation(program, "a_rangeend");
+    a_rangestart = glGetAttribLocation(program, "a_rangestart");
+    a_labelminzoom = glGetAttribLocation(program, "a_labelminzoom");
+}
+
+void IconShader::bind(char *offset) {
+    const int stride = 20;
+
+    glEnableVertexAttribArray(a_pos);
+    glVertexAttribPointer(a_pos, 2, GL_SHORT, false, stride, offset + 0);
+
+    glEnableVertexAttribArray(a_offset);
+    glVertexAttribPointer(a_offset, 2, GL_SHORT, false, stride, offset + 4);
+
+    glEnableVertexAttribArray(a_labelminzoom);
+    glVertexAttribPointer(a_labelminzoom, 1, GL_UNSIGNED_BYTE, false, stride, offset + 8);
+
+    glEnableVertexAttribArray(a_minzoom);
+    glVertexAttribPointer(a_minzoom, 1, GL_UNSIGNED_BYTE, false, stride, offset + 9);
+
+    glEnableVertexAttribArray(a_maxzoom);
+    glVertexAttribPointer(a_maxzoom, 1, GL_UNSIGNED_BYTE, false, stride, offset + 10);
+
+    glEnableVertexAttribArray(a_angle);
+    glVertexAttribPointer(a_angle, 1, GL_UNSIGNED_BYTE, false, stride, offset + 11);
+
+    glEnableVertexAttribArray(a_rangeend);
+    glVertexAttribPointer(a_rangeend, 1, GL_UNSIGNED_BYTE, false, stride, offset + 12);
+
+    glEnableVertexAttribArray(a_rangestart);
+    glVertexAttribPointer(a_rangestart, 1, GL_UNSIGNED_BYTE, false, stride, offset + 13);
+
+    glEnableVertexAttribArray(a_tex);
+    glVertexAttribPointer(a_tex, 2, GL_SHORT, false, stride, offset + 16);
+}