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#include <mbgl/shader/linesdf_shader.hpp>
#include <mbgl/shader/shaders.hpp>
#include <mbgl/platform/gl.hpp>
#include <cstdio>
using namespace mbgl;
LineSDFShader::LineSDFShader()
: Shader(
"line",
shaders[LINESDF_SHADER].vertex,
shaders[LINESDF_SHADER].fragment
) {
if (!valid) {
fprintf(stderr, "invalid line shader\n");
return;
}
a_pos = MBGL_CHECK_ERROR(glGetAttribLocation(program, "a_pos"));
a_data = MBGL_CHECK_ERROR(glGetAttribLocation(program, "a_data"));
}
void LineSDFShader::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_data));
MBGL_CHECK_ERROR(glVertexAttribPointer(a_data, 4, GL_BYTE, false, 8, offset + 4));
}
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