X-Git-Url: https://harrygodden.com/git/?a=blobdiff_plain;f=src%2Fvg%2Fvg_lines.h;h=672a59e84d663b76fa407310d7ca0bc57e27c2e8;hb=3dd767bb10e6fee9cbffeb185d1a9685810c17b5;hp=b6f52bd385a685358b7ab3e429de9da1e460c058;hpb=6cfa3e0895e42f702276e97c85ad371f3512c67d;p=vg.git

diff --git a/src/vg/vg_lines.h b/src/vg/vg_lines.h
index b6f52bd..672a59e 100644
--- a/src/vg/vg_lines.h
+++ b/src/vg/vg_lines.h
@@ -1,22 +1,39 @@
-// Copyright (C) 2021 Harry Godden (hgn) - All Rights Reserved
+/* Copyright (C) 2021-2022 Harry Godden (hgn) - All Rights Reserved */
 
-SHADER_DEFINE( vg_line_shader, 
+#ifndef VG_LINES_H
+#define VG_LINES_H
 
-	// VERTEX
-	"layout (location=0) in vec2 a_co;"
+#include "vg/vg.h"
+
+typedef v3f line_co;
+
+static struct vg_shader _shader_lines = 
+{
+   .name = "[vg] lines",
+   .link = NULL,
+   .vs = 
+   {
+      .orig_file = NULL,
+      .static_src = 
+
+	"uniform mat4 uPv;"
+	"layout (location=0) in vec3 a_co;"
 	"layout (location=1) in vec4 a_colour;"
-	"uniform mat3 uPv;"
 	""
 	"out vec4 s_colour;"
 	""
 	"void main()"
 	"{"
-	"	vec4 vert_pos = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
+	"	vec4 vert_pos = uPv * vec4( a_co, 1.0 );"
 	"  s_colour = a_colour;"
 	"	gl_Position = vert_pos;"
-	"}",
-	
-	// FRAGMENT
+	"}"
+   },
+   .fs = 
+   {
+      .orig_file = NULL,
+      .static_src = 
+
 	"out vec4 FragColor;"
 	""
 	"in vec4 s_colour;"
@@ -25,109 +42,225 @@ SHADER_DEFINE( vg_line_shader,
 	"{"
 	"	FragColor = s_colour;"
 	"}"
-	,
-	UNIFORMS({ "uPv" })
-)
+   }
+};
+
 
 struct
 {
-	struct vg_lines_vert
-	{
-		v2f co;
-		u32 colour;
-	}
-	*buffer;
+   u32 draw,
+       allow_input;
 	
+   struct vg_lines_vert
+   {
+      v3f co;
+      u32 colour;
+   } 
+   *vertex_buffer;
+
 	GLuint vao, vbo;
-	u32 draw_idx, cap, buffer_size;
 }
-vg_lines;
+static vg_lines;
 
-static void vg_lines_init(void)
+VG_STATIC void vg_lines_init(void)
 {
-	SHADER_INIT( vg_line_shader );
-	
-	glGenVertexArrays( 1, &vg_lines.vao );
-	glGenBuffers( 1, &vg_lines.vbo );
-	glBindVertexArray( vg_lines.vao );
-	
-	glBindBuffer( GL_ARRAY_BUFFER, vg_lines.vbo );
-	
-	vg_lines.cap = 10000;
-	vg_lines.buffer_size = vg_lines.cap * sizeof( struct vg_lines_vert );
-	
-	glBufferData( GL_ARRAY_BUFFER, vg_lines.buffer_size, NULL, GL_DYNAMIC_DRAW );
-	glBindVertexArray( vg_lines.vao );
-	
-	glVertexAttribPointer( 
-		0, 
-		sizeof( vg_lines.buffer[0].co ) / sizeof(float), 
-		GL_FLOAT, 
-		GL_FALSE, 
-		sizeof( struct vg_lines_vert ), 
-		(void *)0 
-	);
-	glEnableVertexAttribArray( 0 );
-	
-	glVertexAttribPointer( 
-		1, 
-		4, 
-		GL_UNSIGNED_BYTE, 
-		GL_TRUE, 
-		sizeof( struct vg_lines_vert ), 
-		(void*)(offsetof( struct vg_lines_vert, colour ))
-	);
-	glEnableVertexAttribArray( 1 );
-	vg_lines.buffer = malloc( vg_lines.buffer_size );
-}
+   vg_info( "vg_lines_init\n" );
 
-static void vg_lines_free(void)
-{
-	glDeleteVertexArrays( 1, &vg_lines.vao );
-	glDeleteBuffers( 1, &vg_lines.vbo );
-	
-	free( vg_lines.buffer );
+   vg_convar_push( (struct vg_convar){
+      .name = "vg_lines",
+      .data = &vg_lines.draw,
+      .data_type = k_convar_dtype_i32,
+      .opt_i32 = { .min=0, .max=1, .clamp=1 },
+      .persistent = 1
+   });
+   
+   vg_shader_register( &_shader_lines );
+
+   vg_acquire_thread_sync();
+   {
+      glGenVertexArrays( 1, &vg_lines.vao );
+      glGenBuffers( 1, &vg_lines.vbo );
+      glBindVertexArray( vg_lines.vao );
+      glBindBuffer( GL_ARRAY_BUFFER, vg_lines.vbo );
+      
+      u32 size = 50000 * sizeof( struct vg_lines_vert );
+
+      vg_lines.vertex_buffer = 
+         vg_create_linear_allocator(vg_mem.rtmemory, size, VG_MEMORY_REALTIME);
+      
+      glBufferData( GL_ARRAY_BUFFER, size, NULL, GL_DYNAMIC_DRAW );
+      glBindVertexArray( vg_lines.vao );
+      VG_CHECK_GL_ERR();
+
+      /* Pointers */
+      glVertexAttribPointer( 
+         0, 
+         3,
+         GL_FLOAT, 
+         GL_FALSE, 
+         sizeof( struct vg_lines_vert ), 
+         (void *)0 
+      );
+      glEnableVertexAttribArray( 0 );
+      
+      glVertexAttribPointer( 
+         1, 
+         4, 
+         GL_UNSIGNED_BYTE, 
+         GL_TRUE, 
+         sizeof( struct vg_lines_vert ), 
+         (void*)(offsetof( struct vg_lines_vert, colour ))
+      );
+      glEnableVertexAttribArray( 1 );
+      
+      VG_CHECK_GL_ERR();
+      vg_success( "done\n" );
+   }
+
+   vg_release_thread_sync();
+   vg_lines.allow_input = 1;
 }
 
-static void vg_lines_drawall(float* projection)
+VG_STATIC void vg_lines_drawall( float* projection )
 {
-	SHADER_USE( vg_line_shader );
-	glUniformMatrix3fv( SHADER_UNIFORM( vg_line_shader, "uPv" ), 1, GL_FALSE, projection );
-	
+	glUseProgram( _shader_lines.id );
+
+   glUniformMatrix4fv
+   ( glGetUniformLocation( _shader_lines.id, "uPv" ), 1, GL_FALSE, projection );
+
 	glBindVertexArray( vg_lines.vao );
 	glBindBuffer( GL_ARRAY_BUFFER, vg_lines.vbo );
+
+   u32 bufusage = vg_linear_get_cur(vg_lines.vertex_buffer);
 	
-	glBufferSubData( GL_ARRAY_BUFFER, 0, vg_lines.draw_idx * sizeof(struct vg_lines_vert), vg_lines.buffer );
+	glBufferSubData( GL_ARRAY_BUFFER, 0, bufusage, vg_lines.vertex_buffer );
+
 	glEnable( GL_BLEND );
 	glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
 	glBlendEquation( GL_FUNC_ADD );
-	
-	glDrawArrays( GL_LINES, 0, vg_lines.draw_idx );
+
+   if( vg_lines.draw )
+      glDrawArrays( GL_LINES, 0, bufusage / sizeof(struct vg_lines_vert) );
 	
 	glDisable( GL_BLEND );
-	vg_lines.draw_idx = 0;
+   vg_linear_clear( vg_lines.vertex_buffer );
 }
 
-static void vg_line2( v2f from, v2f to, u32 fc, u32 tc )
+VG_STATIC void vg_line2( line_co from, line_co to, u32 fc, u32 tc )
 {
-	struct vg_lines_vert *v = vg_lines.buffer + vg_lines.draw_idx;
-	v2_copy( from, v[0].co );
-	v2_copy( to, v[1].co );
+   if( !vg_lines.allow_input )
+      return;
+
+   u32 size = 2 * sizeof(struct vg_lines_vert);
+	struct vg_lines_vert *v = vg_linear_alloc( vg_lines.vertex_buffer, size );
+
+	v3_copy( from, v[0].co );
+	v3_copy( to, v[1].co );
+
 	v[0].colour = fc;
 	v[1].colour = tc;
-	
-	vg_lines.draw_idx += 2;
 }
 
-static void vg_line( v2f from, v2f to, u32 colour )
+VG_STATIC void vg_line( line_co from, line_co to, u32 colour )
 {
 	vg_line2( from, to, colour, colour );
 }
 
-static void vg_line_box( v2f min, v2f max, u32 colour )
+VG_STATIC void vg_line_boxf( boxf box, u32 colour )
+{
+   v3f p000, p001, p010, p011, p100, p101, p110, p111;
+
+   p000[0]=box[0][0];p000[1]=box[0][1];p000[2]=box[0][2];
+   p001[0]=box[0][0];p001[1]=box[0][1];p001[2]=box[1][2];
+   p010[0]=box[0][0];p010[1]=box[1][1];p010[2]=box[0][2];
+   p011[0]=box[0][0];p011[1]=box[1][1];p011[2]=box[1][2];
+
+   p100[0]=box[1][0];p100[1]=box[0][1];p100[2]=box[0][2];
+   p101[0]=box[1][0];p101[1]=box[0][1];p101[2]=box[1][2];
+   p110[0]=box[1][0];p110[1]=box[1][1];p110[2]=box[0][2];
+   p111[0]=box[1][0];p111[1]=box[1][1];p111[2]=box[1][2];
+   
+   vg_line( p000, p001, colour );
+   vg_line( p001, p011, colour );
+   vg_line( p011, p010, colour );
+   vg_line( p010, p000, colour );
+
+   vg_line( p100, p101, colour );
+   vg_line( p101, p111, colour );
+   vg_line( p111, p110, colour );
+   vg_line( p110, p100, colour );
+
+   vg_line( p100, p000, colour );
+   vg_line( p101, p001, colour );
+   vg_line( p110, p010, colour );
+   vg_line( p111, p011, colour );
+}
+
+VG_STATIC void vg_line_boxf_transformed( m4x3f m, boxf box, u32 colour )
 {
-	vg_line( min, (v2f){min[0],max[1]}, colour );
-	vg_line( (v2f){min[0],max[1]}, max, colour );
-	vg_line( max, (v2f){max[0],min[1]}, colour );
-	vg_line( (v2f){max[0],min[1]}, min, colour );
+   v3f p000, p001, p010, p011, p100, p101, p110, p111;
+
+   p000[0]=box[0][0];p000[1]=box[0][1];p000[2]=box[0][2];
+   p001[0]=box[0][0];p001[1]=box[0][1];p001[2]=box[1][2];
+   p010[0]=box[0][0];p010[1]=box[1][1];p010[2]=box[0][2];
+   p011[0]=box[0][0];p011[1]=box[1][1];p011[2]=box[1][2];
+
+   p100[0]=box[1][0];p100[1]=box[0][1];p100[2]=box[0][2];
+   p101[0]=box[1][0];p101[1]=box[0][1];p101[2]=box[1][2];
+   p110[0]=box[1][0];p110[1]=box[1][1];p110[2]=box[0][2];
+   p111[0]=box[1][0];p111[1]=box[1][1];p111[2]=box[1][2];
+
+   m4x3_mulv( m, p000, p000 );
+   m4x3_mulv( m, p001, p001 );
+   m4x3_mulv( m, p010, p010 );
+   m4x3_mulv( m, p011, p011 );
+   m4x3_mulv( m, p100, p100 );
+   m4x3_mulv( m, p101, p101 );
+   m4x3_mulv( m, p110, p110 );
+   m4x3_mulv( m, p111, p111 );
+   
+   vg_line( p000, p001, colour );
+   vg_line( p001, p011, colour );
+   vg_line( p011, p010, colour );
+   vg_line( p010, p000, colour );
+
+   vg_line( p100, p101, colour );
+   vg_line( p101, p111, colour );
+   vg_line( p111, p110, colour );
+   vg_line( p110, p100, colour );
+
+   vg_line( p100, p000, colour );
+   vg_line( p101, p001, colour );
+   vg_line( p110, p010, colour );
+   vg_line( p111, p011, colour );
+
+   vg_line( p000, p110, colour );
+   vg_line( p100, p010, colour );
+}
+
+VG_STATIC void vg_line_cross(v3f pos,u32 colour, float scale)
+{
+   v3f p0, p1;
+   v3_add( (v3f){ scale,0.0f,0.0f}, pos, p0 );
+   v3_add( (v3f){-scale,0.0f,0.0f}, pos, p1 );
+   vg_line( p0, p1, colour );
+   v3_add( (v3f){0.0f, scale,0.0f}, pos, p0 );
+   v3_add( (v3f){0.0f,-scale,0.0f}, pos, p1 );
+   vg_line( p0, p1, colour );
+   v3_add( (v3f){0.0f,0.0f, scale}, pos, p0 );
+   v3_add( (v3f){0.0f,0.0f,-scale}, pos, p1 );
+   vg_line( p0, p1, colour );
 }
+
+VG_STATIC void vg_line_pt3( v3f pt, float size, u32 colour )
+{
+   boxf box =
+   {
+      { pt[0]-size, pt[1]-size, pt[2]-size },
+      { pt[0]+size, pt[1]+size, pt[2]+size }
+   };
+
+   vg_line_boxf( box, colour );
+}
+
+#endif /* VG_LINES_H */