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#include <mbgl/shader/linepattern_shader.hpp>
#include <mbgl/shader/shaders.hpp>
#include <mbgl/platform/gl.hpp>
#include <iostream>
#include <cstdio>
using namespace mbgl;
LinepatternShader::LinepatternShader()
: Shader(
"linepattern",
shaders[LINEPATTERN_SHADER].vertex,
shaders[LINEPATTERN_SHADER].fragment
) {
if (!valid) {
fprintf(stderr, "invalid line pattern shader\n");
return;
}
a_pos = MBGL_CHECK_ERROR(glGetAttribLocation(program, "a_pos"));
a_extrude = MBGL_CHECK_ERROR(glGetAttribLocation(program, "a_extrude"));
a_linesofar = MBGL_CHECK_ERROR(glGetAttribLocation(program, "a_linesofar"));
}
void LinepatternShader::bind(char *offset) {
MBGL_CHECK_ERROR(glEnableVertexAttribArray(a_pos));
MBGL_CHECK_ERROR(glVertexAttribPointer(a_pos, 2, GL_SHORT, false, 8, offset + 0));
MBGL_CHECK_ERROR(glEnableVertexAttribArray(a_extrude));
MBGL_CHECK_ERROR(glVertexAttribPointer(a_extrude, 2, GL_BYTE, false, 8, offset + 4));
MBGL_CHECK_ERROR(glEnableVertexAttribArray(a_linesofar));
MBGL_CHECK_ERROR(glVertexAttribPointer(a_linesofar, 1, GL_SHORT, false, 8, offset + 6));
}
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