93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
#include <mbgl/shader/line_shader.hpp>
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#include <mbgl/shader/shaders.hpp>
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#include <mbgl/platform/gl.hpp>
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#include <cstdio>
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using namespace mbgl;
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LineShader::LineShader()
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: Shader(
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"line",
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shaders[LINE_SHADER].vertex,
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shaders[LINE_SHADER].fragment
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) {
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if (!valid) {
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fprintf(stderr, "invalid line shader\n");
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return;
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}
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a_pos = glGetAttribLocation(program, "a_pos");
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a_extrude = glGetAttribLocation(program, "a_extrude");
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a_linesofar = glGetAttribLocation(program, "a_linesofar");
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u_matrix = glGetUniformLocation(program, "u_matrix");
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u_exmatrix = glGetUniformLocation(program, "u_exmatrix");
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u_linewidth = glGetUniformLocation(program, "u_linewidth");
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u_color = glGetUniformLocation(program, "u_color");
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u_ratio = glGetUniformLocation(program, "u_ratio");
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u_dasharray = glGetUniformLocation(program, "u_dasharray");
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u_blur = glGetUniformLocation(program, "u_blur");
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// fprintf(stderr, "LineShader:\n");
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// fprintf(stderr, " - u_matrix: %d\n", u_matrix);
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// fprintf(stderr, " - u_exmatrix: %d\n", u_exmatrix);
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// fprintf(stderr, " - u_linewidth: %d\n", u_linewidth);
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// fprintf(stderr, " - u_color: %d\n", u_color);
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// fprintf(stderr, " - u_ratio: %d\n", u_ratio);
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// fprintf(stderr, " - u_dasharray: %d\n", u_dasharray);
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}
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void LineShader::bind(char *offset) {
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glEnableVertexAttribArray(a_pos);
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glVertexAttribPointer(a_pos, 2, GL_SHORT, false, 8, offset + 0);
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glEnableVertexAttribArray(a_extrude);
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glVertexAttribPointer(a_extrude, 2, GL_BYTE, false, 8, offset + 4);
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glEnableVertexAttribArray(a_linesofar);
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glVertexAttribPointer(a_linesofar, 1, GL_SHORT, false, 8, offset + 6);
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}
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void LineShader::setExtrudeMatrix(const std::array<float, 16>& new_exmatrix) {
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if (exmatrix != new_exmatrix) {
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glUniformMatrix4fv(u_exmatrix, 1, GL_FALSE, new_exmatrix.data());
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exmatrix = new_exmatrix;
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}
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}
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void LineShader::setColor(const std::array<float, 4>& new_color) {
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if (color != new_color) {
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glUniform4fv(u_color, 1, new_color.data());
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color = new_color;
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}
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}
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void LineShader::setLineWidth(const std::array<float, 2>& new_linewidth) {
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if (linewidth != new_linewidth) {
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glUniform2fv(u_linewidth, 1, new_linewidth.data());
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linewidth = new_linewidth;
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}
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}
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void LineShader::setRatio(float new_ratio) {
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if (ratio != new_ratio) {
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glUniform1f(u_ratio, new_ratio);
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ratio = new_ratio;
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}
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}
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void LineShader::setDashArray(const std::array<float, 2>& new_dasharray) {
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if (dasharray != new_dasharray) {
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glUniform2fv(u_dasharray, 1, new_dasharray.data());
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dasharray = new_dasharray;
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}
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}
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void LineShader::setBlur(float new_blur) {
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if (blur != new_blur) {
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glUniform1f(u_blur, new_blur);
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blur = new_blur;
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}
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}
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