perlin

[vg.git] / vg_ui.h

diff --git a/vg_ui.h b/vg_ui.h
index ba428b009b385132e1f5bbf3c6253b09e5b2ddf5..dc0cceec4288b3dbeb7365d29846e273ad72a918 100644 (file)
--- a/vg_ui.h
+++ b/vg_ui.h
@@ -74,6 +74,66 @@ static struct vg_shader _shader_ui =
    }
 };
 
+static struct vg_shader _shader_ui_image =
+{
+   .name = "[vg] ui_image",
+   .link = NULL,
+   .vs = 
+   {
+      .orig_file = NULL,
+      .static_src = 
+       "layout (location=0) in vec2 a_co;"
+       "layout (location=1) in vec2 a_uv;"
+       "layout (location=2) in vec4 a_colour;"
+       "layout (location=3) in vec4 a_clip;"
+       "uniform mat3 uPv;"
+       ""
+       "out vec2 aTexCoords;"
+       "out vec4 aColour;"
+       "out vec2 aWsp;"
+       "out vec4 aClip;"
+       ""
+       "void main()"
+       "{"
+               "gl_Position = vec4( uPv * vec3( a_co, 1.0 ), 1.0 );"
+               "aTexCoords = a_uv * 0.0078125;"
+               "aColour = a_colour;"
+               
+               "aWsp = a_co;"
+               "aClip = a_clip;"
+       "}",
+   },
+   .fs = 
+   {
+      .orig_file = NULL,
+      .static_src = 
+       "uniform sampler2D uTexImage;"
+       "out vec4 FragColor;"
+       ""
+       "in vec2 aTexCoords;"
+       "in vec4 aColour;"
+       ""
+       "in vec2 aWsp;"
+       "in vec4 aClip;"
+
+       "void main()"
+       "{"
+               "float clip_blend = step( aWsp.x, aClip.z ) *"
+                         "step( aWsp.y, aClip.w ) *"
+                         "step( aClip.x, aWsp.x ) *"
+                         "step( aClip.y, aWsp.y ); "
+
+               "vec4 colour = texture( uTexImage, aTexCoords );"
+      "float value = dot(vec4(1.0),colour)*0.25;"
+
+      "vec3 col = vec3(pow(cos(value*3.14159265*2.0)*0.5+0.5,0.5))"
+                  "* vec3(step(value,0.5),0.3,step(1.0-value,0.5));"
+
+               "FragColor = vec4( col*4.0, clip_blend );"
+       "}"
+   }
+};
+
 typedef i16                            ui_px;
 typedef u32                            ui_colour;
 typedef ui_px                          ui_rect[4];
@@ -159,7 +219,7 @@ struct
 } 
 static vg_uictx;
 
-#define UI_GLYPH_SPACING_X 9
+#define UI_GLYPH_SPACING_X 8
 
 static GLuint ui_glyph_texture = 0;
 static ui_colourset ui_default_colours = {
@@ -170,7 +230,8 @@ static ui_colourset ui_default_colours = {
 
 VG_STATIC void _vg_ui_init(void)
 {
-   if( !vg_shader_compile( &_shader_ui ) ) 
+   if( !vg_shader_compile( &_shader_ui ) ||
+       !vg_shader_compile( &_shader_ui_image ) ) 
       vg_fatal_exit_loop( "Failed to compile ui shader" );
 
    /*
@@ -239,7 +300,7 @@ VG_STATIC void _vg_ui_init(void)
    
        /* Load default font */
    u32 compressed[] = {
-      #include "vg/vg_pxfont.h"
+      #include "vg/vg_pxfont_thin.h"
    };
 
    u32 pixels = 0, total = 256*256, data = 0;
@@ -322,6 +383,15 @@ VG_STATIC void ui_draw( m3x3f view_override )
        
        glDrawElements( GL_TRIANGLES, num_indices_normal, 
          GL_UNSIGNED_SHORT, (void*)(0) );
+
+
+   /* images */
+   glUseProgram( _shader_ui_image.id );
+       glUniformMatrix3fv( glGetUniformLocation( _shader_ui_image.id, "uPv" ), 1, 
+         GL_FALSE, (float *)view_override );
+
+       glActiveTexture( GL_TEXTURE1 );
+       glUniform1i( glGetUniformLocation( _shader_ui_image.id, "uTexImage" ), 1 );
        
        /* Draw image elements */
        for( int i = 0; i < vg_uictx.image_count; i ++ )