linepattern in progress

1 files changed, 121 insertions, 0 deletions

diff --git a/src/shader/linepattern_shader.cpp b/src/shader/linepattern_shader.cpp
new file mode 100644
index 0000000000..ec235f648e
--- /dev/null
+++ b/src/shader/linepattern_shader.cpp
@@ -0,0 +1,121 @@
+#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 = glGetAttribLocation(program, "a_pos");
+    a_extrude = glGetAttribLocation(program, "a_extrude");
+    a_linesofar = glGetAttribLocation(program, "a_linesofar");
+
+    u_matrix = glGetUniformLocation(program, "u_matrix");
+    u_exmatrix = glGetUniformLocation(program, "u_exmatrix");
+    u_linewidth = glGetUniformLocation(program, "u_linewidth");
+    u_ratio = glGetUniformLocation(program, "u_ratio");
+    u_pattern_size = glGetUniformLocation(program, "u_pattern_size");
+
+    u_pattern_tl = glGetUniformLocation(program, "u_pattern_tl");
+    u_pattern_br = glGetUniformLocation(program, "u_pattern_br");
+    u_offset = glGetUniformLocation(program, "u_offset");
+    u_gamma = glGetUniformLocation(program, "u_gamma");
+    u_fade = glGetUniformLocation(program, "u_fade");
+
+    //fprintf(stderr, "LinepatternShader:\n");
+    //fprintf(stderr, "    - u_matrix: %d\n", u_matrix);
+    //fprintf(stderr, "    - u_exmatrix: %d\n", u_exmatrix);
+    //fprintf(stderr, "    - u_linewidth: %d\n", u_linewidth);
+    //fprintf(stderr, "    - u_ratio: %d\n", u_ratio);
+    //fprintf(stderr, "    - u_pattern_size: %d\n", u_pattern_size);
+    //fprintf(stderr, "    - u_pattern_tl: %d\n", u_pattern_tl);
+    //fprintf(stderr, "    - u_pattern_br: %d\n", u_pattern_br);
+    //fprintf(stderr, "    - u_offset: %d\n", u_offset);
+    //fprintf(stderr, "    - u_gamma: %d\n", u_gamma);
+}
+
+void LinepatternShader::bind(char *offset) {
+    glEnableVertexAttribArray(a_pos);
+    glVertexAttribPointer(a_pos, 2, GL_SHORT, false, 8, offset + 0);
+
+    glEnableVertexAttribArray(a_extrude);
+    glVertexAttribPointer(a_extrude, 2, GL_BYTE, false, 8, offset + 4);
+
+    glEnableVertexAttribArray(a_linesofar);
+    glVertexAttribPointer(a_linesofar, 1, GL_SHORT, false, 8, offset + 6);
+}
+
+void LinepatternShader::setExtrudeMatrix(const std::array<float, 16>& new_exmatrix) {
+    if (exmatrix != new_exmatrix) {
+        glUniformMatrix4fv(u_exmatrix, 1, GL_FALSE, new_exmatrix.data());
+        exmatrix = new_exmatrix;
+    }
+}
+
+void LinepatternShader::setPatternSize(const std::array<float, 2>& new_pattern_size) {
+    if (pattern_size != new_pattern_size) {
+        glUniform2fv(u_pattern_size, 1, new_pattern_size.data());
+        pattern_size = new_pattern_size;
+    }
+}
+
+void LinepatternShader::setLineWidth(const std::array<float, 2>& new_linewidth) {
+    if (linewidth != new_linewidth) {
+        glUniform2fv(u_linewidth, 1, new_linewidth.data());
+        linewidth = new_linewidth;
+    }
+}
+
+void LinepatternShader::setRatio(float new_ratio) {
+    if (ratio != new_ratio) {
+        glUniform1f(u_ratio, new_ratio);
+        ratio = new_ratio;
+    }
+}
+
+void LinepatternShader::setPatternTopLeft(const std::array<float, 2>& new_pattern_tl) {
+    if (pattern_tl != new_pattern_tl) {
+        glUniform2fv(u_pattern_tl, 1, new_pattern_tl.data());
+        pattern_tl = new_pattern_tl;
+    }
+}
+
+void LinepatternShader::setPatternBottomRight(const std::array<float, 2>& new_pattern_br) {
+    if (pattern_br != new_pattern_br) {
+        glUniform2fv(u_pattern_br, 1, new_pattern_br.data());
+        pattern_br = new_pattern_br;
+    }
+}
+
+void LinepatternShader::setOffset(const std::array<float, 2>& new_offset) {
+    if (offset != new_offset) {
+        glUniform2fv(u_offset, 1, new_offset.data());
+        offset = new_offset;
+    }
+}
+
+void LinepatternShader::setGamma(float new_gamma) {
+    if (gamma != new_gamma) {
+        glUniform1f(u_gamma, new_gamma);
+        gamma = new_gamma;
+    }
+}
+
+void LinepatternShader::setFade(float new_fade) {
+    if (fade != new_fade) {
+        glUniform1f(u_fade, new_fade);
+        fade = new_fade;
+    }
+};