more microui
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+114
-7
@@ -1346,6 +1346,7 @@ Draw :: struct
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solid_circles : SolidCircle,
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solid_capsules : SolidCapsules,
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polygons : SolidPolygon,
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textures : Texture,
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drawCounters : bool,
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//regular_font : im.Font,
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frame_buffer : u32,
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@@ -1435,11 +1436,33 @@ draw_flush :: proc(draw : ^Draw) {
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lines_flush(&draw.lines, &draw.cam)
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points_flush(&draw.points, &draw.cam)
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circle_flush(&draw.circles, &draw.cam)
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textures_flush(draw)
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text_flush(draw)
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check_opengl()
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}
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Rect :: struct {
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x, y, w, h : f32,
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}
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TextureData :: struct
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{
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texture_id : u32, //opengl texture id
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width, height : i32,
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src_rect : Rect, // in pixel format
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dst_rect : Rect, // in pixel format
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}
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//Contains multiple textures
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Texture :: struct
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{
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textures : [dynamic]TextureData,
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vao, vbo, ebo: u32,
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uniforms : gl.Uniforms,
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program_id : u32,
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}
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/*
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Create texture and render texture
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@@ -1449,7 +1472,51 @@ draw_flush :: proc(draw : ^Draw) {
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render_texture :: gets a texture_id and rect and displays the texture (generic but convinent for micorui)
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*/
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create_texutre :: proc(data: []u8, width, height: i32) -> u32
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textures_create :: proc(texture: ^Texture)
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{
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texture.program_id, _ = gl.load_shaders_source(#load("shaders/texture.vs"), #load("shaders/texture.fs"))
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gl.UseProgram(texture.program_id)
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gl.Enable(gl.BLEND)
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gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
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texture.uniforms = gl.get_uniforms_from_program(texture.program_id)
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vertices : []f32 = {
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0.0, 1.0, 0.0, 1.0,
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0.0, 0.0, 0.0, 0.0,
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1.0, 0.0, 1.0, 0.0,
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1.0, 1.0, 1.0, 1.0,
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}
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indices := []u32 {
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0, 1, 2,
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0, 2, 3,
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}
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gl.GenVertexArrays(1, &texture.vao)
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gl.GenBuffers(1, &texture.vbo)
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gl.GenBuffers(1, &texture.ebo)
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gl.BindVertexArray(texture.vao)
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gl.BindBuffer(gl.ARRAY_BUFFER, texture.vbo)
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gl.BufferData(gl.ARRAY_BUFFER, len(vertices) * size_of(f32), raw_data(vertices), gl.DYNAMIC_DRAW)
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gl.BindBuffer(gl.ELEMENT_ARRAY_BUFFER, texture.ebo)
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gl.BufferData(gl.ELEMENT_ARRAY_BUFFER, len(indices) * size_of(u32), raw_data(indices), gl.DYNAMIC_DRAW)
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gl.VertexAttribPointer(0, 2, gl.FLOAT, false, 4 * size_of(f32), 0)
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gl.EnableVertexAttribArray(0)
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gl.VertexAttribPointer(1, 2, gl.FLOAT, false, 4 * size_of(f32), 2 * size_of(f32))
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gl.EnableVertexAttribArray(1)
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//gl.BindBuffer(gl.ARRAY_BUFFER, 0)
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//gl.BindBuffer(gl.ELEMENT_ARRAY_BUFFER, 0)
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gl.UseProgram(0)
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}
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create_texture :: proc(data: []u8, width, height: i32) -> u32
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{
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texture : u32
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@@ -1457,16 +1524,55 @@ create_texutre :: proc(data: []u8, width, height: i32) -> u32
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gl.BindTexture(gl.TEXTURE_2D, texture)
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gl.TexImage2D( gl.TEXTURE_2D, 0, gl.RGBA8, width, height, 0, gl.RGBA, gl.UNSIGNED_BYTE, raw_data(data))
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE)
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gl.BindTexture(gl.TEXTURE_2D, 0)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
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gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
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gl.BindTexture( gl.TEXTURE_2D, 0)
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return texture
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}
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textures_flush :: proc(d: ^Draw)
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{
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texture := &d.textures
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gl.UseProgram(texture.program_id)
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gl.Uniform2f(texture.uniforms["u_resolution"].location, f32(d.cam.width), f32(d.cam.height))
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gl.Enable(gl.BLEND)
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gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
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gl.ActiveTexture(gl.TEXTURE0)
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for &t in &texture.textures
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{
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vertices := []f32{
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0.0, 1.0, t.src_rect.x , (t.src_rect.y+ f32(t.src_rect.h)),
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0.0, 0.0, t.src_rect.x , (t.src_rect.y ),
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1.0, 0.0, (t.src_rect.x + f32(t.src_rect.w)), (t.src_rect.y ),
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1.0, 1.0, (t.src_rect.x + f32(t.src_rect.w)), (t.src_rect.y+ f32(t.src_rect.h))
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}
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gl.BindBuffer(gl.ARRAY_BUFFER, texture.vbo)
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gl.BufferData(gl.ARRAY_BUFFER, len(vertices) * size_of(f32), raw_data(vertices), gl.DYNAMIC_DRAW)
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gl.Uniform2f(texture.uniforms["u_position"].location, t.dst_rect.x, t.dst_rect.y)
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gl.Uniform2f(texture.uniforms["u_size"].location, t.dst_rect.w, t.dst_rect.h)
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gl.BindTexture(gl.TEXTURE_2D, t.texture_id)
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gl.Uniform1i(texture.uniforms["ourTexture"].location, 0)
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gl.BindVertexArray(texture.vao)
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gl.DrawElements(gl.TRIANGLES, 6, gl.UNSIGNED_INT, nil)
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}
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gl.Disable(gl.BLEND)
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gl.UseProgram(0)
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check_opengl()
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clear(&texture.textures)
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}
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@@ -1481,6 +1587,7 @@ draw_create :: proc(draw : ^Draw, camera : ^Camera, font_path : string = "")
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circle_create(&draw.circles)
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solid_circle_create(&draw.solid_circles)
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solid_polygon_create(&draw.polygons)
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textures_create(&draw.textures)
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{
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draw.glyph.atlas_width = draw.cam.width
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@@ -18,7 +18,7 @@ void main(){
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vec2 ndc;
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ndc.x = (screen_pos.x / u_resolution.x) * 2.0 - 1.0;
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ndc.y = 1.0 - (screen_pos.y / u_resolution.x) * 2.0;
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ndc.y = 1.0 - (screen_pos.y / u_resolution.y) * 2.0;
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gl_Position = vec4(ndc, 0.0, 1.0);
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TexCoord = aTexCoord;
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