Builds on knulli

cmake/targets/knulli.cmake

@@ -1,5 +1,8 @@
 # Find link platform-specific libraries
+set(OpenGL_GL_PREFERENCE LEGACY)
 find_package(SDL2 REQUIRED)
+find_library(EGL_LIB EGL REQUIRED)
+find_library(GL_LIB GL REQUIRED)
 find_package(OpenGL REQUIRED)
 
 # Setup endianess at compile time to optimize.
@@ -16,11 +19,12 @@ else()
 endif()
 
 # Link required libraries.
-target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PUBLIC 
+target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PRIVATE 
   SDL2
   pthread
-  OpenGL::GL
-  GL
+  OpenGL::GLES2
+  ${GL_LIB}
+  ${EGL_LIB}
   m
 )
 
@@ -28,6 +32,7 @@ target_link_libraries(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
 target_compile_definitions(${DUSK_LIBRARY_TARGET_NAME} PUBLIC
   DUSK_SDL2
   DUSK_OPENGL
+  DUSK_OPENGL_ES
   DUSK_LINUX
   DUSK_DISPLAY_SIZE_DYNAMIC
   DUSK_DISPLAY_WIDTH_DEFAULT=640

docker/knulli/Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:bookworm
+FROM debian:trixie
 ENV DEBIAN_FRONTEND=noninteractive
 WORKDIR /workdir
 RUN dpkg --add-architecture arm64 && \
@@ -19,13 +19,17 @@ RUN dpkg --add-architecture arm64 && \
         python3-dotenv \
         python3-pyqt5 \
         python3-opengl \
-        liblua5.3-dev:arm64 \
+        liblua5.4-dev:arm64 \
         xz-utils:arm64 \
         libbz2-dev:arm64 \
         zlib1g-dev:arm64 \
         libzip-dev:arm64 \
-        libbz2-dev:arm64 \
         libssl-dev:arm64 \
         libsdl2-dev:arm64 \
+        liblzma-dev:arm64 \
+        libopengl0:arm64 \
+        libgl1:arm64 \
+        libegl1:arm64 \
+        libgles2:arm64 \
         libgl1-mesa-dev:arm64 && \
     rm -rf /var/lib/apt/lists/*

scripts/build-rg35xxh.sh

@@ -4,4 +4,21 @@ cmake -S . -B build-rg35xxh -G Ninja \
   -DDUSK_TARGET_SYSTEM=rg35xxh \
   -DCMAKE_TOOLCHAIN_FILE=./cmake/toolchains/aarch64-linux-gnu.cmake \
   -DCMAKE_BUILD_TYPE=Release
-cmake --build build-rg35xxh -- -j$(nproc)
+cmake --build build-rg35xxh -- -j$(nproc)
+
+# Copy necessary libs out
+mkdir -p ./build-rg35xxh/dusk
+cp ./build-rg35xxh/Dusk ./build-rg35xxh/dusk/Dusk
+cp ./build-rg35xxh/dusk.dsk ./build-rg35xxh/dusk/dusk.dsk
+echo '#!/bin/bash' > build-rg35xxh/dusk/Dusk.sh
+echo 'cd "$(dirname "$(readlink -f "$0")")"' >> build-rg35xxh/dusk/Dusk.sh
+echo 'export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$(dirname "$(readlink -f "$0")")' >> build-rg35xxh/dusk/Dusk.sh
+echo 'export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/gl4es' >> build-rg35xxh/dusk/Dusk.sh
+echo 'export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib' >> build-rg35xxh/dusk/Dusk.sh
+echo '$(dirname "$(readlink -f "$0")")/Dusk' >> build-rg35xxh/dusk/Dusk.sh
+chmod +x build-rg35xxh/dusk/Dusk.sh
+cp /usr/lib/aarch64-linux-gnu/liblua5.4.so.0 build-rg35xxh/dusk/
+# cp /usr/lib/aarch64-linux-gnu/libSDL2-2.0.so.0 build-rg35xxh/dusk/
+# cp /usr/lib/aarch64-linux-gnu/libGL.so.1 build-rg35xxh/dusk/
+# cp /usr/lib/aarch64-linux-gnu/libEGL.so.1 build-rg35xxh/dusk/
+# cp /usr/lib/aarch64-linux-gnu/libGLESv2.so.2 build-rg35xxh/dusk/

src/duskgl/display/shader/shaderunlitgl.c

@@ -9,6 +9,45 @@
 
 #ifdef DUSK_OPENGL_LEGACY
   shaderdefinition_t SHADER_UNLIT_DEFINITION = { 0 };
+#elifdef DUSK_OPENGL_ES
+  shaderdefinition_t SHADER_UNLIT_DEFINITION = {
+    .vert =
+      "#version 300 es\n"
+      "layout(location = 0) in vec3 a_Pos;\n"
+      "layout(location = 1) in vec2 a_TexCoord;\n"
+      "layout(location = 2) in vec4 a_Color;\n"
+      "uniform mat4 u_Proj;\n"
+      "uniform mat4 u_View;\n"
+      "uniform mat4 u_Model;\n"
+      "out vec4 v_Color;\n"
+      "out vec2 v_TexCoord;\n"
+      "void main() {\n"
+      "  gl_Position = u_Proj * u_View * u_Model * vec4(a_Pos, 1.0);\n"
+      "  v_Color = a_Color;\n"
+      "  v_TexCoord = a_TexCoord;\n"
+      "}\n",
+
+    .frag =
+      "#version 300 es\n"
+      "precision mediump float;\n"
+      "uniform sampler2D u_Texture;\n"
+      "uniform uint u_Colors[256];\n"
+      "uniform int u_ColorCount;\n"
+      "in vec4 v_Color;\n"
+      "in vec2 v_TexCoord;\n"
+      "out vec4 FragColor;\n"
+      "void main() {\n"
+      "  vec4 texColor = texture(u_Texture, v_TexCoord);\n"
+      "  uint index = uint(floor(texColor.r * 255.0));\n"
+      "  uint palColor = u_Colors[index];\n"
+      "  float r = float((palColor >> 24) & 0xFFu) / 255.0;\n"
+      "  float g = float((palColor >> 16) & 0xFFu) / 255.0;\n"
+      "  float b = float((palColor >> 8)  & 0xFFu) / 255.0;\n"
+      "  float a = float((palColor >> 0)  & 0xFFu) / 255.0;\n"
+      "  vec4 paletteColor = vec4(r, g, b, a);\n"
+      "  FragColor = paletteColor;\n"
+      "}\n"
+  };
 #else
   shaderdefinition_t SHADER_UNLIT_DEFINITION = {
     .vert =

src/duskgl/duskgl.h

@@ -6,6 +6,20 @@
  */
 
 #pragma once
-#define GL_GLEXT_PROTOTYPES
-#include <GL/gl.h>
-#include <GL/glext.h>
+#ifdef DUSK_OPENGL_ES
+  #include <GLES3/gl3.h>
+  #define GL_COLOR_INDEX8_EXT 0x80E5
+  #define GL_FRAMEBUFFER_EXT GL_FRAMEBUFFER
+  #define GL_FRAMEBUFFER_COMPLETE_EXT GL_FRAMEBUFFER_COMPLETE
+  #define glCheckFramebufferStatusEXT glCheckFramebufferStatus
+  #define glDeleteFramebuffersEXT glDeleteFramebuffers
+  #define glGenFramebuffersEXT glGenFramebuffers
+  #define glBindFramebufferEXT glBindFramebuffer
+  #define glFramebufferTexture2DEXT glFramebufferTexture2D
+  #define GL_COLOR_ATTACHMENT0_EXT GL_COLOR_ATTACHMENT0
+  #define glClearDepth(depth) glClearDepthf(depth)
+#else
+  #define GL_GLEXT_PROTOTYPES
+  #include <GL/gl.h>
+  #include <GL/glext.h>
+#endif

src/dusklinux/log/log.c

@@ -19,4 +19,5 @@ void logError(const char_t *message, ...) {
   va_start(args, message);
   vprintf(message, args);
   va_end(args);
+  fflush(stdout);
 }