155 lines
3.8 KiB
C
155 lines
3.8 KiB
C
#include "debugdraw.h"
|
|
|
|
#include "openglrender.h"
|
|
|
|
#include "shader.h"
|
|
|
|
static uint32_t circleVBO;
|
|
static uint32_t circleVAO;
|
|
static struct mShader *circleShader;
|
|
|
|
static uint32_t gridVBO;
|
|
static uint32_t gridVAO;
|
|
static struct mShader *gridShader;
|
|
|
|
static uint32_t rectVBO;
|
|
static uint32_t rectVAO;
|
|
static struct mShader *rectShader;
|
|
|
|
void debugdraw_init()
|
|
{
|
|
circleShader = MakeShader("circlevert.glsl", "circlefrag.glsl");
|
|
shader_setUBO(circleShader, "Projection", 0);
|
|
glGenBuffers(1, &circleVBO);
|
|
glGenVertexArrays(1, &circleVAO);
|
|
|
|
|
|
float gridverts[] = {
|
|
-1.f, -1.f,
|
|
1.f, -1.f,
|
|
-1.f, 1.f,
|
|
1.f, 1.f
|
|
};
|
|
|
|
gridShader = MakeShader("gridvert.glsl", "gridfrag.glsl");
|
|
shader_setUBO(gridShader, "Projection", 0);
|
|
glGenBuffers(1, &gridVBO);
|
|
glGenVertexArrays(1, &gridVAO);
|
|
glBindVertexArray(gridVAO);
|
|
glBindBuffer(GL_ARRAY_BUFFER, gridVBO);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(gridverts), &gridverts,
|
|
GL_STATIC_DRAW);
|
|
glEnableVertexAttribArray(0);
|
|
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, NULL);
|
|
|
|
rectShader = MakeShader("linevert.glsl", "linefrag.glsl");
|
|
shader_setUBO(rectShader, "Projection", 0);
|
|
glGenBuffers(1, &rectVBO);
|
|
glGenVertexArrays(1, &rectVAO);
|
|
}
|
|
|
|
void draw_line(int x1, int y1, int x2, int y2)
|
|
{
|
|
shader_use(rectShader);
|
|
float verts[] = {
|
|
x1, y1,
|
|
x2, y2
|
|
};
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, rectVBO);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(verts), &verts, GL_DYNAMIC_DRAW);
|
|
glBindVertexArray(rectVAO);
|
|
glEnableVertexAttribArray(0);
|
|
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, NULL);
|
|
glDrawArrays(GL_LINE_STRIP, 0, 2);
|
|
}
|
|
|
|
void draw_edge(float *points, int n)
|
|
{
|
|
shader_use(rectShader);
|
|
glBindBuffer(GL_ARRAY_BUFFER, rectVBO);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * n * 2, points,
|
|
GL_DYNAMIC_DRAW);
|
|
glBindVertexArray(rectVAO);
|
|
glEnableVertexAttribArray(0);
|
|
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, NULL);
|
|
glDrawArrays(GL_LINE_STRIP, 0, n);
|
|
}
|
|
|
|
void draw_circle(int x, int y, float radius, int pixels)
|
|
{
|
|
shader_use(circleShader);
|
|
|
|
float verts[] = {
|
|
x - radius, y - radius, -1.f, -1.f,
|
|
x + radius, y - radius, 1.f, -1.f,
|
|
x - radius, y + radius, -1.f, 1.f,
|
|
x + radius, y + radius, 1.f, 1.f
|
|
};
|
|
|
|
glBindBuffer(GL_ARRAY_BUFFER, circleVBO);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(verts), &verts, GL_DYNAMIC_DRAW);
|
|
|
|
shader_setfloat(circleShader, "radius", radius);
|
|
shader_setint(circleShader, "thickness", pixels);
|
|
|
|
glBindVertexArray(circleVAO);
|
|
glEnableVertexAttribArray(0);
|
|
glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, NULL);
|
|
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
|
|
}
|
|
|
|
void draw_rect(int x, int y, int w, int h)
|
|
{
|
|
float hw = w / 2.f;
|
|
float hh = h / 2.f;
|
|
|
|
float verts[] = {
|
|
x - hw, y - hh,
|
|
x + hw, y - hh,
|
|
x + hw, y + hh,
|
|
x - hw, y + hh
|
|
};
|
|
|
|
shader_use(rectShader);
|
|
glBindBuffer(GL_ARRAY_BUFFER, rectVBO);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(verts), &verts, GL_DYNAMIC_DRAW);
|
|
glBindVertexArray(rectVAO);
|
|
glEnableVertexAttribArray(0);
|
|
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, NULL);
|
|
glDrawArrays(GL_LINE_LOOP, 0, 4);
|
|
}
|
|
|
|
void draw_grid(int width, int span)
|
|
{
|
|
shader_use(gridShader);
|
|
shader_setint(gridShader, "thickness", width);
|
|
shader_setint(gridShader, "span", span);
|
|
glBindVertexArray(gridVAO);
|
|
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
|
|
|
|
|
|
}
|
|
|
|
void draw_point(int x, int y, float r)
|
|
{
|
|
draw_circle(x, y, r, r);
|
|
}
|
|
|
|
void draw_poly(float *points, int n)
|
|
{
|
|
shader_use(rectShader);
|
|
glBindBuffer(GL_ARRAY_BUFFER, rectVBO);
|
|
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * n * 2, points,
|
|
GL_DYNAMIC_DRAW);
|
|
glBindVertexArray(rectVAO);
|
|
glEnableVertexAttribArray(0);
|
|
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, NULL);
|
|
glDrawArrays(GL_LINE_LOOP, 0, n);
|
|
}
|
|
|
|
void debugdraw_flush()
|
|
{
|
|
|
|
}
|