improving rendering structure a little bit and started with chat impl.

font/Font.h

@@ -4,16 +4,17 @@
 #include "../stdlib/Types.h"
 #include "../memory/BufferMemory.h"
 
-enum TextAlignH {
-    TEXT_ALIGN_H_LEFT,
-    TEXT_ALIGN_H_CENTER,
-    TEXT_ALIGN_H_RIGHT,
+// @todo Move this somewhere else, it doesn't belong here
+enum UIAlignH {
+    UI_ALIGN_H_LEFT,
+    UI_ALIGN_H_CENTER,
+    UI_ALIGN_H_RIGHT,
 };
 
-enum TextAlignV {
-    TEXT_ALIGN_V_BOTTOM,
-    TEXT_ALIGN_V_CENTER,
-    TEXT_ALIGN_V_TOP,
+enum UIAlignV {
+    UI_ALIGN_V_BOTTOM,
+    UI_ALIGN_V_CENTER,
+    UI_ALIGN_V_TOP,
 };
 
 struct GlyphMetrics {

gpuapi/RenderUtils.h

@@ -12,64 +12,187 @@
 #include <stdio.h>
 #include <string.h>
 #include "../math/matrix/MatrixFloat32.h"
+#include "../font/Font.h"
 
-void make_character(
-    f32 *data,
-    f32 x, f32 y, f32 n, f32 m, char c)
-{
-    f32 *d = data;
+inline
+void vertex_rect_create(
+    Vertex3DTextureColorIndex* __restrict vertices, uint32* __restrict index, f32 zindex,
+    f32 x, f32 y, f32 width, f32 height, int32 align_h, int32 align_v,
+    uint32 color_index = 0, f32 tex_x1 = 0.0f, f32 tex_y1 = 0.0f, f32 tex_x2 = 0.0f, f32 tex_y2 = 0.0f
+) {
+    if (align_h == UI_ALIGN_H_RIGHT) {
+        x -= width;
+    } else if (align_h == UI_ALIGN_H_CENTER) {
+        x -= width / 2;
+    }
 
-    // Texture atlas is 16 characters
-    // 1 / 16 = 0.0625
-    f32 a = 0.0625;
-    f32 b = 0.0625 * 2;
+    if (align_v == UI_ALIGN_V_TOP) {
+        y -= height;
+    } else if (align_v == UI_ALIGN_V_CENTER) {
+        y -= height / 2;
+    }
 
-    // ascii offset
-    int32 w = c - 32;
+    // Degenerate triangles
+    // They are alternating every loop BUT since we use references they look the same in code
+    // WARNING: Before using we must make sure that the 0 index is defined
+    //          The easiest way is to just define a "degenerate" starting point
+    vertices[*index].position.x = vertices[*index - 1].position.x;
+    vertices[*index].position.y = vertices[*index - 1].position.y;
+    vertices[*index].position.z = zindex;
+    vertices[*index].tex_coord.x = 0;
+    vertices[*index].tex_coord.y = 0;
+    vertices[*index].color = 0;
+    ++(*index);
 
-    f32 du = (w % 16) * a;
-    f32 dv = 1 - (w / 16) * b - b;
+    vertices[*index].position.x = x;
+    vertices[*index].position.y = y;
+    vertices[*index].position.z = zindex;
+    vertices[*index].tex_coord.x = 0;
+    vertices[*index].tex_coord.y = 0;
+    vertices[*index].color = 0;
+    ++(*index);
 
-    // Quad data (2 triangles)
-    *(d++) = x - n; *(d++) = y - m;
-    *(d++) = du + 0; *(d++) = dv;
-    *(d++) = x + n; *(d++) = y - m;
-    *(d++) = du + a; *(d++) = dv;
-    *(d++) = x + n; *(d++) = y + m;
-    *(d++) = du + a; *(d++) = dv + b;
-    *(d++) = x - n; *(d++) = y - m;
-    *(d++) = du + 0; *(d++) = dv;
-    *(d++) = x + n; *(d++) = y + m;
-    *(d++) = du + a; *(d++) = dv + b;
-    *(d++) = x - n; *(d++) = y + m;
-    *(d++) = du + 0; *(d++) = dv + b;
+    // Rectangle
+    vertices[*index].position.x = x;
+    vertices[*index].position.y = y;
+    vertices[*index].position.z = zindex;
+    vertices[*index].tex_coord.x = tex_x1;
+    vertices[*index].tex_coord.y = tex_y1;
+    vertices[*index].color = color_index;
+    ++(*index);
+
+    // Depending on the orientation we either need to add or subtract height -> we use branchless code for that
+    vertices[*index].position.x = x;
+    vertices[*index].position.y = y + height;
+    vertices[*index].position.z = zindex;
+    vertices[*index].tex_coord.x = tex_x1;
+    vertices[*index].tex_coord.y = tex_y2;
+    vertices[*index].color = color_index;
+    ++(*index);
+
+    vertices[*index].position.x = x + width;
+    vertices[*index].position.y = y;
+    vertices[*index].position.z = zindex;
+    vertices[*index].tex_coord.x = tex_x2;
+    vertices[*index].tex_coord.y = tex_y1;
+    vertices[*index].color = color_index;
+    ++(*index);
+
+    vertices[*index].position.x = x + width;
+    vertices[*index].position.y = y + height;
+    vertices[*index].position.z = zindex;
+    vertices[*index].tex_coord.x = tex_x2;
+    vertices[*index].tex_coord.y = tex_y2;
+    vertices[*index].color = color_index;
+    ++(*index);
 }
 
-void font_string_dimension(const char *str, v2_int32* dim, const int* width_lookup)
-{
-    size_t length = strlen(str);
-    int32 width  = 0;
+void text_calculate_dimensions(
+    f32* __restrict width, f32* __restrict height,
+    const Font* __restrict font, const char* text, f32 scale, int32 length
+) {
+    f32 x = 0;
+    f32 y = font->line_height * scale;
 
-    for (int32 i = 0; i < length; ++i) {
-        if (str[i] == '\n') {
-            if (width > dim->x) {
-                dim->x = width;
-            }
+    f32 offset_x = 0;
 
-            width = 0;
-            ++dim->y;
+    // @todo remember to restrict to width/height if value > 0 -> force width to remain below certain value
+
+    for (int i = 0; i < length; ++i) {
+        int32 character = utf8_get_char_at(text, i);
+
+        if (character == '\n') {
+            x = OMS_MAX(x, offset_x);
+            y += font->line_height * scale;
+
+            offset_x = 0;
+
+            continue;
         }
 
-        width += width_lookup[str[i]];
+        Glyph* glyph = NULL;
+        for (int j = 0; j < font->glyph_count; ++j) {
+            if (font->glyphs[j].codepoint == character) {
+                glyph = &font->glyphs[j];
+
+                break;
+            }
+        }
+
+        if (!glyph) {
+            continue;
+        }
+
+        offset_x += (glyph->metrics.width + glyph->metrics.offset_x) * scale;
     }
 
-     if (width > dim->x) {
-        dim->x = width;
+    *width = OMS_MAX(x, offset_x);
+    *height = y;
+}
+
+void vertex_text_create(
+    Vertex3DTextureColorIndex* __restrict vertices, uint32* __restrict index, f32 zindex,
+    f32 x, f32 y, f32 width, f32 height, int32 align_h, int32 align_v,
+    const Font* __restrict font, const char* __restrict text, f32 size, uint32 color_index = 0
+) {
+    int32 length = utf8_strlen(text);
+    float scale = size / font->size;
+
+    // If we do a different alignment we need to pre-calculate the width and height
+    if (align_h != 0 || align_v != 0) {
+        text_calculate_dimensions(&width, &height, font, text, scale, length);
+
+        if (align_h == UI_ALIGN_H_RIGHT) {
+            x -= width;
+        } else if (align_h == UI_ALIGN_H_CENTER) {
+            x -= width / 2;
+        }
+
+        if (align_v == UI_ALIGN_V_TOP) {
+            y -= height;
+        } else if (align_v == UI_ALIGN_V_CENTER) {
+            y -= height / 2;
+        }
     }
 
-    if (width > 0) {
-        ++dim->y;
+    f32 offset_x = x;
+    for (int i = 0; i < length; ++i) {
+        int32 character = utf8_get_char_at(text, i);
+
+        if (character == '\n') {
+            y += font->line_height * scale;
+            offset_x = x;
+
+            continue;
+        }
+
+        Glyph* glyph = NULL;
+        for (int j = 0; j < font->glyph_count; ++j) {
+            if (font->glyphs[j].codepoint == character) {
+                glyph = &font->glyphs[j];
+
+                break;
+            }
+        }
+
+        if (!glyph) {
+            continue;
+        }
+
+        vertex_rect_create(
+            vertices, index, zindex,
+            offset_x, y, glyph->metrics.width * scale, glyph->metrics.height * scale, UI_ALIGN_H_LEFT, UI_ALIGN_V_BOTTOM,
+            color_index, glyph->coords.x1, glyph->coords.y1, glyph->coords.x2, glyph->coords.y2
+        );
+
+        offset_x += (glyph->metrics.width + glyph->metrics.offset_x) * scale;
     }
+
+    // @question How and where to cut off text out of view (here or somewhere else)
+    //      We could just prepare the entire text here but then decide what to render later?
+    // @todo If width or height (usually just width) > 0 we use those values for automatic wrapping
+    //      This way we can ensure no overflow easily
+    // @todo implement line alignment, currently only total alignment is considered
 }
 
 inline

gpuapi/opengl/OpenglUtils.h

@@ -559,77 +559,6 @@ int get_gpu_free_memory()
     return available;
 }
 
-struct TextRender {
-    uint32 align;
-    uint32 x;
-    uint32 y;
-    f32 scale;
-    VertexRef vertices;
-    char* text;
-
-    uint32 sampler_id;
-
-    TextShader shader_data;
-};
-
-#define TEXT_ALIGN_LEFT 0
-#define TEXT_ALIGN_CENTER 1
-#define TEXT_ALIGN_RIGHT 2
-
-// @performance This needs to handle batched randering, isolated rendering is WAY to inefficient
-inline
-void render_text_batched(
-    RingMemory* ring,
-    int32 width, int32 height,
-    TextRender* text_data
-) {
-    glUseProgram(text_data->shader_data.program_id);
-    glUniform1i(text_data->shader_data.sampler_addr, text_data->vertices.sampler_id);
-
-    // @performance Instead of re-creating the matrix every render call just use the id to activate it
-    // 2d projection
-    if (text_data->shader_data.matrix_id == 0) {
-        f32 matrix[16] = {};
-        mat4_ortho_sparse_rh(matrix, 0.0f, (f32) width, 0.0f, (f32) height, -1.0f, 1.0f);
-        glUniformMatrix4fv(text_data->shader_data.matrix_addr, 1, GL_FALSE, matrix);
-        text_data->shader_data.matrix_id = 1;
-        // @bug this is wrong, we need to make buffer instead. We don't want to upload the matrix every time
-        //      Isn't this buffer the same for every text?
-        //      If yes, consider to save the orth projection matrix globally and change it whenever we change the resolution/window dimensions
-    } else {
-        // @question Do we even need to bind it if we never change it?
-        // We also never bind our projection matrix apart from the first time and it works. This should be the same no?
-        //glBindVertexArray(text_data->shader_data.matrix_id);
-    }
-
-    int32 length = (int32) strlen(text_data->text);
-    f32 x = text_data->x - text_data->scale * text_data->align * (length - 1) / 2;
-
-    // @performance Only create when the text got removed from memory
-    if (text_data->vertices.data_id == 0) {
-        GLfloat *data = (GLfloat *) ring_get_memory(ring, sizeof(GLfloat) * 6 * 4 * length);
-
-        for (int32 i = 0; i < length; i++) {
-            make_character(data + i * 24, x, (f32) text_data->y, text_data->scale / 2, text_data->scale, text_data->text[i]);
-            x += text_data->scale;
-        }
-
-        text_data->vertices.data_id = gpuapi_buffer_generate(sizeof(GLfloat) * 6 * 4 * length, data);
-    } else {
-        glBindBuffer(GL_ARRAY_BUFFER, text_data->vertices.data_id);
-        //glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW); Is this required?
-    }
-
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-    draw_triangles_2d(&text_data->vertices, text_data->vertices.data_id, length * 6);
-    glDisable(GL_BLEND);
-
-    // @performance We should only delete the buffer, when the text becomes invisible
-    // @todo remember to implement a remove logic for all the buffers
-    //glDeleteBuffers(1, &text_data->vertices.data_id);
-}
-
 /*
 void render_9_patch(GLuint texture,
     int32 imgWidth, int32 imgHeight,

input/Input.h

@@ -11,6 +11,7 @@
 
 #include "../stdlib/Types.h"
 #include "../utils/BitUtils.h"
+#include "../memory/BufferMemory.h"
 #include "ControllerInput.h"
 
 // How many concurrent mouse/secondary input device presses to we recognize
@@ -526,6 +527,9 @@ void input_set_controller_state(Input* input, ControllerInput* controller, uint6
 void
 input_hotkey_state(Input* input)
 {
+    uint8 old_hotkeys[MAX_KEY_PRESSES];
+    memcpy(old_hotkeys, input->state.state_hotkeys, sizeof(uint8) * MAX_KEY_PRESSES);
+
     memset(input->state.state_hotkeys, 0, sizeof(uint8) * MAX_KEY_PRESSES);
 
     int32 active_hotkeys = 0;
@@ -576,15 +580,27 @@ input_hotkey_state(Input* input)
                     return;
                 }
 
+                // Hotkey already active
+                // @question Do we even need this? This shouldn't happen anyway?!
+                if (hotkey_is_active(&input->state, hotkeys_for_key[possible_hotkey_idx])) {
+                    continue;
+                }
+
                 bool is_pressed = hotkey_keys_are_active(&input->state, mapping, hotkeys_for_key[possible_hotkey_idx]);
 
                 // store active hotkey, if it is not already active
-                if (is_pressed && !hotkey_is_active(&input->state, hotkeys_for_key[possible_hotkey_idx])) {
+                if (is_pressed) {
                     input->state.state_hotkeys[active_hotkeys] = hotkeys_for_key[possible_hotkey_idx];
                     ++active_hotkeys;
 
                     // Run callback if defined
-                    if (input->input_mapping1.callbacks[hotkeys_for_key[possible_hotkey_idx]] != 0) {
+                    if (input->input_mapping1.callbacks[hotkeys_for_key[possible_hotkey_idx]] != 0
+                        && old_hotkeys[0] != hotkeys_for_key[possible_hotkey_idx]
+                        && old_hotkeys[1] != hotkeys_for_key[possible_hotkey_idx]
+                        && old_hotkeys[2] != hotkeys_for_key[possible_hotkey_idx]
+                        && old_hotkeys[3] != hotkeys_for_key[possible_hotkey_idx]
+                        && old_hotkeys[4] != hotkeys_for_key[possible_hotkey_idx]
+                    ) {
                         input->input_mapping1.callbacks[hotkeys_for_key[possible_hotkey_idx]](input->callback_data);
                     }
                 }

models/settings/Settings.h

@@ -289,6 +289,10 @@ struct CSettings {
     byte game_chat_size = 128;
     int32 game_chat_pos[2] = { -1, -1 };
 
+    // @todo replace settings below with bit flag
+    // UI
+    uint64 ui_visibility_flags = 0;
+
     // HUD
     bool game_show_health_bar_self = false;
     bool game_show_health_bar_player = false;

models/settings/setting_types.h

@@ -74,4 +74,6 @@
 #define SETTING_TYPE_DISABLED 0x00
 #define SETTING_TYPE_UNLIMITED 0x00
 
+#define SETTING_UI_VISIBILITY_FPS 1
+
 #endif

object/Vertex.h

@@ -18,6 +18,12 @@ struct Vertex3D {
     v4_f32 color;
 };
 
+struct Vertex3DTextureColor {
+    v3_f32 position;
+    v2_f32 tex_coord;
+    v4_f32 color;
+};
+
 struct Vertex3DTextureColorIndex {
     v3_f32 position;
     v2_f32 tex_coord;