wip records

include/glez/CMakeLists.txt

@@ -3,6 +3,7 @@ target_sources(glez PRIVATE
         "${CMAKE_CURRENT_LIST_DIR}/glez.hpp"
         "${CMAKE_CURRENT_LIST_DIR}/font.hpp"
         "${CMAKE_CURRENT_LIST_DIR}/texture.hpp"
-        "${CMAKE_CURRENT_LIST_DIR}/draw.hpp")
+        "${CMAKE_CURRENT_LIST_DIR}/draw.hpp"
+        "${CMAKE_CURRENT_LIST_DIR}/record.hpp")
 
 add_subdirectory(detail)

include/glez/detail/CMakeLists.txt

@@ -2,4 +2,5 @@ target_sources(glez PRIVATE
         "${CMAKE_CURRENT_LIST_DIR}/font.hpp"
         "${CMAKE_CURRENT_LIST_DIR}/texture.hpp"
         "${CMAKE_CURRENT_LIST_DIR}/render.hpp"
-        "${CMAKE_CURRENT_LIST_DIR}/program.hpp")
+        "${CMAKE_CURRENT_LIST_DIR}/program.hpp"
+        "${CMAKE_CURRENT_LIST_DIR}/record.hpp")

include/glez/detail/record.hpp

@@ -0,0 +1,43 @@
+/*
+  Created on 19.06.18.
+*/
+
+#pragma once
+
+#include <vector>
+#include <cstdint>
+#include "render.hpp"
+#include "../../../ftgl/vertex-buffer.h"
+
+namespace glez::detail::record
+{
+
+class RecordedCommands
+{
+public:
+    struct segment
+    {
+        std::size_t start{};
+        std::size_t size{};
+        uint32_t texture{};
+    };
+
+    RecordedCommands();
+    ~RecordedCommands();
+
+    void reset();
+    void store(glez::detail::render::vertex *vertices, size_t vcount, uint32_t *indices, size_t icount);
+    void bind(uint32_t texture);
+    void render();
+protected:
+    void drawSegment(std::size_t index);
+
+    uint32_t currentTexture{ 0 };
+    size_t nextStart{ 0 };
+    ftgl::vertex_buffer_t *vertex_buffer{};
+    std::vector<segment> segments{};
+};
+
+extern RecordedCommands *currentRecord;
+
+}

include/glez/glez.hpp

@@ -15,5 +15,8 @@ void shutdown();
 void resize(int width, int height);
 
 void begin();
+void recordBegin();
+void recordEnd();
+void recordReplay();
 void end();
 };

include/glez/record.hpp

@@ -0,0 +1,24 @@
+/*
+  Created on 19.06.18.
+*/
+
+#pragma once
+
+namespace glez::detail::record
+{
+class RecordedCommands;
+}
+
+namespace glez::record
+{
+
+class Record
+{
+public:
+    Record();
+    ~Record();
+
+    detail::record::RecordedCommands *commands{ nullptr };
+};
+
+}

src/detail/CMakeLists.txt

@@ -2,4 +2,5 @@ target_sources(glez PRIVATE
         "${CMAKE_CURRENT_LIST_DIR}/program.cpp"
         "${CMAKE_CURRENT_LIST_DIR}/render.cpp"
         "${CMAKE_CURRENT_LIST_DIR}/texture.cpp"
-        "${CMAKE_CURRENT_LIST_DIR}/font.cpp")
+        "${CMAKE_CURRENT_LIST_DIR}/font.cpp"
+        "${CMAKE_CURRENT_LIST_DIR}/record.cpp")

src/detail/record.cpp

@@ -0,0 +1,67 @@
+/*
+  Created on 19.06.18.
+*/
+
+#include <cstddef>
+#include <glez/detail/record.hpp>
+#include <glez/record.hpp>
+
+namespace glez::detail::record
+{
+
+void RecordedCommands::drawSegment(std::size_t index)
+{
+    glDrawElements(GL_TRIANGLES, segments[index].size, GL_UNSIGNED_INT, (void *)(segments[index].start * sizeof(glez::detail::render::vertex)));
+}
+
+void RecordedCommands::render()
+{
+    vertex_buffer_render_setup(vertex_buffer, GL_TRIANGLES);
+    vertex_buffer_render_finish(vertex_buffer);
+}
+
+void RecordedCommands::bind(uint32_t texture)
+{
+    if (currentTexture != texture)
+    {
+        segments.push_back(segment{ nextStart, vertex_buffer->indices->size - nextStart, texture });
+        currentTexture = texture;
+    }
+}
+
+void
+RecordedCommands::store(glez::detail::render::vertex *vertices, size_t vcount,
+                        uint32_t *indices, size_t icount)
+{
+    vertex_buffer_push_back(vertex_buffer, vertices, vcount, indices, icount);
+}
+
+RecordedCommands::RecordedCommands()
+{
+    vertex_buffer = vertex_buffer_new("vertex:2f,tex_coord:2f,color:4f,drawmode:1i");
+}
+
+RecordedCommands::~RecordedCommands()
+{
+    vertex_buffer_delete(vertex_buffer);
+}
+
+void RecordedCommands::reset()
+{
+    vertex_buffer_clear(vertex_buffer);
+    segments.clear();
+}
+
+RecordedCommands *currentRecord{ nullptr };
+
+}
+
+glez::record::Record::Record()
+{
+    commands = new glez::detail::record::RecordedCommands{};
+}
+
+glez::record::Record::~Record()
+{
+    delete commands;
+}

src/draw.cpp

@@ -12,6 +12,7 @@
 #include <cstring>
 #include <glez/detail/texture.hpp>
 #include <cmath>
+#include <glez/detail/record.hpp>
 
 namespace indices
 {
@@ -95,7 +96,10 @@ void internal_draw_string(float x, float y, const std::string &string,
         if (glyph->height > size_y)
             size_y = glyph->height;
 
-        vertex_buffer_push_back(glez::detail::program::buffer, vertices, 4,
+        if (glez::detail::record::currentRecord)
+            glez::detail::record::currentRecord->store(vertices, 4, indices::rectangle, 6);
+        else
+            vertex_buffer_push_back(glez::detail::program::buffer, vertices, 4,
                                 indices::rectangle, 6);
     }
 
@@ -151,7 +155,10 @@ void line(float x, float y, float dx, float dy, rgba color, float thickness)
     vertices[3].position = { ex + nx + px, ey + ny + py };
     vertices[0].position = { ex + nx - px, ey + ny - py };
 
-    ftgl::vertex_buffer_push_back(detail::program::buffer, vertices, 4,
+    if (detail::record::currentRecord)
+        detail::record::currentRecord->store(vertices, 4, indices::rectangle, 6);
+    else
+        ftgl::vertex_buffer_push_back(detail::program::buffer, vertices, 4,
                                   indices::rectangle, 6);
 }
 
@@ -170,7 +177,10 @@ void rect(float x, float y, float w, float h, rgba color)
     vertices[2].position = { x + w, y + h };
     vertices[3].position = { x + w, y };
 
-    ftgl::vertex_buffer_push_back(detail::program::buffer, vertices, 4,
+    if (detail::record::currentRecord)
+        detail::record::currentRecord->store(vertices, 4, indices::rectangle, 6);
+    else
+        ftgl::vertex_buffer_push_back(detail::program::buffer, vertices, 4,
                                   indices::rectangle, 6);
 }
 
@@ -275,7 +285,10 @@ void rect_textured(float x, float y, float w, float h, rgba color, texture &text
     vertices[2].uv = { s1, t1 };
     vertices[3].uv = { s1, t0 };
 
-    ftgl::vertex_buffer_push_back(detail::program::buffer, vertices, 4,
+    if (detail::record::currentRecord)
+        detail::record::currentRecord->store(vertices, 4, indices::rectangle, 6);
+    else
+        ftgl::vertex_buffer_push_back(detail::program::buffer, vertices, 4,
                                   indices::rectangle, 6);
 }
 }

src/glez.cpp

@@ -7,6 +7,8 @@
 #include <glez/detail/program.hpp>
 #include <glez/detail/render.hpp>
 #include <glez/detail/texture.hpp>
+#include <glez/record.hpp>
+#include <glez/detail/record.hpp>
 
 namespace glez
 {
@@ -43,4 +45,19 @@ void preInit()
 {
     detail::font::init();
 }
+
+void glez::recordBegin(record::Record& rc)
+{
+    detail::record::currentRecord = rc.commands;
+}
+
+void glez::recordEnd()
+{
+
+}
+
+void glez::recordReplay()
+{
+
+}
 }