"float clip_blend = step( aWsp.x, aClip.z ) * step( aWsp.y, aClip.w ) * step( aClip.x, aWsp.x ) * step( aClip.y, aWsp.y );"
"vec4 glyph = texture( uTexGlyphs, aTexCoords );"
- "FragColor = aColour * vec4( 1.0, 1.0, 1.0, glyph.r * clip_blend );"
+ "FragColor = vec4( aColour.rgb * glyph.rgb, aColour.a*glyph.a*clip_blend );"
"}"
,
UNIFORMS({ "uPv", "uTexGlyphs" })
ui_colourset *colours_main;
ui_colourset *colours_current;
+
+ GLuint vao;
+ GLuint vbo;
+ GLuint ebo;
+
+ struct ui_image
+ {
+ ui_rect rc;
+ GLuint image;
+ }
+ images[16];
+ int image_count;
};
-// Shortnames
-#define gui_draw(...) ui_draw( &ui_global_ctx, __VA_ARGS__)
-#define gui_current(...) ui_current( &ui_global_ctx, __VA_ARGS__)
-#define gui_new_node() ui_new_node( &ui_global_ctx )
-#define gui_hasmouse(...) ui_hasmouse( &ui_global_ctx, __VA_ARGS__)
-#define gui_end() ui_end( &ui_global_ctx )
-#define gui_end_down() ui_end_down( &ui_global_ctx )
-#define gui_end_right() ui_end_right( &ui_global_ctx )
-#define gui_fill_y() ui_fill_y( &ui_global_ctx)
-#define gui_fill_x() ui_fill_x( &ui_global_ctx)
-#define gui_align_bottom() ui_align_bottom( &ui_global_ctx )
-#define gui_align_right() ui_align_right( &ui_global_ctx )
-#define gui_align_top() ui_align_top( &ui_global_ctx )
-#define gui_align_left() ui_align_left( &ui_global_ctx )
-#define gui_clamp_rect(...) ui_clamp_rect( &ui_global_ctx, __VA_ARGS__)
-#define gui_group_id(...) ui_group_id( &ui_global_ctx, __VA_ARGS__)
-#define gui_capture_mouse(...) ui_capture_mouse( &ui_global_ctx, __VA_ARGS__)
-#define gui_set_clip(...) ui_set_clip( &ui_global_ctx, __VA_ARGS__)
-#define gui_release_clip() ui_release_clip( &ui_global_ctx )
-#define gui_fill_rect_uv(...) ui_fill_rect_uv( &ui_global_ctx, __VA_ARGS__)
-#define gui_fill_rect(...) ui_fill_rect( &ui_global_ctx, __VA_ARGS__)
-#define gui_text(...) ui_text( &ui_global_ctx, __VA_ARGS__)
-#define gui_begin(...) ui_begin( &ui_global_ctx, __VA_ARGS__)
-#define gui_resolve(...) ui_resolve( &ui_global_ctx, __VA_ARGS__)
-#define gui_set_mouse(...) ui_set_mouse( &ui_global_ctx, __VA_ARGS__)
-#define gui_button(...) ui_button( &ui_global_ctx, __VA_ARGS__)
-#define gui_window(...) ui_window( &ui_global_ctx, __VA_ARGS__)
-#define gui_want_mouse() ui_want_mouse( &ui_global_ctx )
-
-#define gui_scrollbar(...) ui_scrollbar( &ui_global_ctx, __VA_ARGS__)
-#define gui_override_colours(...) ui_override_colours( &ui_global_ctx, __VA_ARGS__)
-#define gui_reset_colours(...) ui_reset_colours( &ui_global_ctx )
-
// Globals
// ===========================================================================================================
int ui_glyph_override = 0;
ui_px ui_glyph_spacing_x = 6;
GLuint ui_glyph_texture = 0;
-GLuint ui_vao;
-GLuint ui_vbo;
-GLuint ui_ebo;
-
-#define UI_BUFFER_SIZE 30000
-#define UI_INDEX_SIZE 20000
ui_colourset ui_default_colours = {
.main = 0xff00ff00,
};
ui_ctx ui_global_ctx = {
.padding = 8,
- .colours_current = &ui_default_colours,
.colours_main = &ui_default_colours
};
// Initialization
// ===========================================================================================================
+static void ui_reset_colours( ui_ctx *ctx );
+static void ui_init_context( ui_ctx *ctx, int index_buffer_size )
+{
+ ui_reset_colours( ctx );
+
+ u32 vertex_buffer_size = (index_buffer_size+(index_buffer_size/2));
+
+ // Generate the buffer we are gonna be drawing to
+ {
+ glGenVertexArrays(1, &ctx->vao);
+ glGenBuffers( 1, &ctx->vbo );
+ glGenBuffers( 1, &ctx->ebo );
+ glBindVertexArray( ctx->vao );
+
+ glBindBuffer( GL_ARRAY_BUFFER, ctx->vbo );
+
+ glBufferData( GL_ARRAY_BUFFER, vertex_buffer_size * sizeof( struct ui_vert ), NULL, GL_DYNAMIC_DRAW );
+ glBindVertexArray( ctx->vao );
+
+ glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, ctx->ebo );
+ glBufferData( GL_ELEMENT_ARRAY_BUFFER, index_buffer_size * sizeof( u16 ), NULL, GL_DYNAMIC_DRAW );
+
+ u32 const stride = sizeof( struct ui_vert );
+
+ // XY
+ glVertexAttribPointer( 0, 2, GL_SHORT, GL_FALSE, stride, (void *)offsetof( struct ui_vert, co ) );
+ glEnableVertexAttribArray( 0 );
+
+ // UV
+ glVertexAttribPointer( 1, 2, GL_UNSIGNED_BYTE, GL_FALSE, stride, (void *)offsetof( struct ui_vert, uv ) );
+ glEnableVertexAttribArray( 1 );
+
+ // COLOUR
+ glVertexAttribPointer( 2, 4, GL_UNSIGNED_BYTE, GL_TRUE, stride, (void *)offsetof( struct ui_vert, colour ) );
+ glEnableVertexAttribArray( 2 );
+
+ // CLIPPING
+ glVertexAttribPointer( 3, 4, GL_SHORT, GL_FALSE, stride, (void *)offsetof( struct ui_vert, clip ) );
+ glEnableVertexAttribArray( 3 );
+ }
+
+ // Initialize default context
+ {
+ ctx->verts = (struct ui_vert *)malloc( vertex_buffer_size * sizeof(struct ui_vert) );
+ ctx->indices = (u16*)malloc( index_buffer_size * sizeof(u16) );
+ }
+}
+
+static void ui_context_free( ui_ctx *ctx )
+{
+ glDeleteVertexArrays( 1, &ctx->vao );
+ glDeleteBuffers( 1, &ctx->vbo );
+ glDeleteBuffers( 1, &ctx->ebo );
+
+ free( ctx->verts );
+ free( ctx->indices );
+}
+
static void ui_override_font( GLuint new_tex, ui_px space_x )
{
if( ui_glyph_texture )
}
// Setup OpenGL memory
- {
- SHADER_INIT( shader_ui );
-
- // Generate the buffer we are gonna be drawing to
- glGenVertexArrays(1, &ui_vao);
- glGenBuffers( 1, &ui_vbo );
- glGenBuffers( 1, &ui_ebo );
- glBindVertexArray( ui_vao );
-
- glBindBuffer( GL_ARRAY_BUFFER, ui_vbo );
-
- glBufferData( GL_ARRAY_BUFFER, UI_BUFFER_SIZE * sizeof( struct ui_vert ), NULL, GL_DYNAMIC_DRAW );
- glBindVertexArray( ui_vao );
-
- glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, ui_ebo );
- glBufferData( GL_ELEMENT_ARRAY_BUFFER, UI_INDEX_SIZE * sizeof( u16 ), NULL, GL_DYNAMIC_DRAW );
-
- u32 const stride = sizeof( struct ui_vert );
-
- // XY
- glVertexAttribPointer( 0, 2, GL_SHORT, GL_FALSE, stride, (void *)offsetof( struct ui_vert, co ) );
- glEnableVertexAttribArray( 0 );
-
- // UV
- glVertexAttribPointer( 1, 2, GL_UNSIGNED_BYTE, GL_FALSE, stride, (void *)offsetof( struct ui_vert, uv ) );
- glEnableVertexAttribArray( 1 );
-
- // COLOUR
- glVertexAttribPointer( 2, 4, GL_UNSIGNED_BYTE, GL_TRUE, stride, (void *)offsetof( struct ui_vert, colour ) );
- glEnableVertexAttribArray( 2 );
-
- // CLIPPING
- glVertexAttribPointer( 3, 4, GL_SHORT, GL_FALSE, stride, (void *)offsetof( struct ui_vert, clip ) );
- glEnableVertexAttribArray( 3 );
- }
-
- // Initialize default context
- {
- ui_global_ctx.verts = (struct ui_vert *)malloc( UI_BUFFER_SIZE * sizeof(struct ui_vert) );
- ui_global_ctx.indices = (u16*)malloc( UI_INDEX_SIZE * sizeof(u16) );
- }
+ SHADER_INIT( shader_ui );
+ ui_init_context( &ui_global_ctx, 20000 );
}
static void ui_default_free(void)
if( !ui_glyph_override )
glDeleteTextures( 1, &ui_glyph_texture );
- glDeleteVertexArrays( 1, &ui_vao );
- glDeleteBuffers( 1, &ui_vbo );
- glDeleteBuffers( 1, &ui_ebo );
-
- free( ui_global_ctx.verts );
- free( ui_global_ctx.indices );
+ ui_context_free( &ui_global_ctx );
}
+static struct ui_vert *ui_fill_rect_uv( ui_ctx *ctx, ui_rect rect, u32 colour, ui_px uv[4] );
static void ui_draw( ui_ctx *ctx, m3x3f view_override )
{
- glBindVertexArray( ui_vao );
+ u32 num_indices_normal = ctx->num_indices;
- glBindBuffer( GL_ARRAY_BUFFER, ui_vbo );
+ // Append images to back of buffer
+ for( int i = 0; i < ctx->image_count; i ++ )
+ ui_fill_rect_uv( ctx, ctx->images[i].rc, 0xffffffff, (ui_px[4]){0,0,128,128} );
+
+ glBindVertexArray( ctx->vao );
+
+ glBindBuffer( GL_ARRAY_BUFFER, ctx->vbo );
glBufferSubData( GL_ARRAY_BUFFER, 0, ctx->num_verts * sizeof( struct ui_vert ), ctx->verts );
- glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, ui_ebo );
+ glBindBuffer( GL_ELEMENT_ARRAY_BUFFER, ctx->ebo );
glBufferSubData( GL_ELEMENT_ARRAY_BUFFER, 0, ctx->num_indices * sizeof( u16 ), ctx->indices );
glEnable(GL_BLEND);
glBindTexture( GL_TEXTURE_2D, ui_glyph_texture );
glUniform1i( SHADER_UNIFORM( shader_ui, "uTexGlyphs" ), 0 );
- glDrawElements( GL_TRIANGLES, ctx->num_indices, GL_UNSIGNED_SHORT, (void*)(0) );
+ glDrawElements( GL_TRIANGLES, num_indices_normal, GL_UNSIGNED_SHORT, (void*)(0) );
- //vg_info( "Verts: %u, Indices: %u\n", ctx->num_verts, ctx->num_indices );
+ // Draw image elements
+ for( int i = 0; i < ctx->image_count; i ++ )
+ {
+ struct ui_image *img = &ctx->images[i];
+
+ glBindTexture( GL_TEXTURE_2D, img->image );
+ glDrawElements( GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, (void*)( (num_indices_normal + 6*i)*sizeof(u16) ) );
+ }
glDisable(GL_BLEND);
}
if( ctx->click_state == 0 )
ctx->capture_mouse_id = 0;
+
+ ctx->image_count = 0;
}
static void ui_resolve( ui_ctx *ctx )
ctx->colours_current = ctx->colours_main;
ctx->override_colour = 0xffffffff;
}
+
+static void ui_push_image( ui_ctx *ctx, ui_rect rc, GLuint image )
+{
+ struct ui_image *img = &ctx->images[ ctx->image_count ++ ];
+ ui_rect_copy( rc, img->rc );
+ img->image = image;
+}
+
+// Shortnames
+#define gui_draw(...) ui_draw( &ui_global_ctx, __VA_ARGS__)
+#define gui_current(...) ui_current( &ui_global_ctx, __VA_ARGS__)
+#define gui_new_node() ui_new_node( &ui_global_ctx )
+#define gui_hasmouse(...) ui_hasmouse( &ui_global_ctx, __VA_ARGS__)
+#define gui_end() ui_end( &ui_global_ctx )
+#define gui_end_down() ui_end_down( &ui_global_ctx )
+#define gui_end_right() ui_end_right( &ui_global_ctx )
+#define gui_fill_y() ui_fill_y( &ui_global_ctx)
+#define gui_fill_x() ui_fill_x( &ui_global_ctx)
+#define gui_align_bottom() ui_align_bottom( &ui_global_ctx )
+#define gui_align_right() ui_align_right( &ui_global_ctx )
+#define gui_align_top() ui_align_top( &ui_global_ctx )
+#define gui_align_left() ui_align_left( &ui_global_ctx )
+#define gui_clamp_rect(...) ui_clamp_rect( &ui_global_ctx, __VA_ARGS__)
+#define gui_group_id(...) ui_group_id( &ui_global_ctx, __VA_ARGS__)
+#define gui_capture_mouse(...) ui_capture_mouse( &ui_global_ctx, __VA_ARGS__)
+#define gui_set_clip(...) ui_set_clip( &ui_global_ctx, __VA_ARGS__)
+#define gui_release_clip() ui_release_clip( &ui_global_ctx )
+#define gui_fill_rect_uv(...) ui_fill_rect_uv( &ui_global_ctx, __VA_ARGS__)
+#define gui_fill_rect(...) ui_fill_rect( &ui_global_ctx, __VA_ARGS__)
+#define gui_text(...) ui_text( &ui_global_ctx, __VA_ARGS__)
+#define gui_begin(...) ui_begin( &ui_global_ctx, __VA_ARGS__)
+#define gui_resolve(...) ui_resolve( &ui_global_ctx, __VA_ARGS__)
+#define gui_set_mouse(...) ui_set_mouse( &ui_global_ctx, __VA_ARGS__)
+#define gui_button(...) ui_button( &ui_global_ctx, __VA_ARGS__)
+#define gui_window(...) ui_window( &ui_global_ctx, __VA_ARGS__)
+#define gui_want_mouse() ui_want_mouse( &ui_global_ctx )
+#define gui_push_image(...) ui_push_image( &ui_global_ctx, __VA_ARGS__ )
+#define gui_scrollbar(...) ui_scrollbar( &ui_global_ctx, __VA_ARGS__)
+#define gui_override_colours(...) ui_override_colours( &ui_global_ctx, __VA_ARGS__)
+#define gui_reset_colours(...) ui_reset_colours( &ui_global_ctx )
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