treballant en sdl3gpu

CMakeLists.txt

@@ -24,6 +24,9 @@ set(APP_SOURCES
     source/core/rendering/screen.cpp
     source/core/rendering/text.cpp
 
+    # Core - SDL3 GPU shader backend
+    source/core/rendering/sdl3gpu/sdl3gpu_shader.cpp
+
     # Core - Input global (nueva)
     source/core/input/global_inputs.cpp
 
@@ -48,9 +51,66 @@ set(APP_SOURCES
 find_package(SDL3 REQUIRED CONFIG REQUIRED COMPONENTS SDL3)
 message(STATUS "SDL3 encontrado: ${SDL3_INCLUDE_DIRS}")
 
+# --- COMPILACIÓ SHADERS SPIR-V (Linux/Windows — macOS usa Metal) ---
+if(NOT APPLE)
+    find_program(GLSLC_EXE NAMES glslc)
+
+    set(SHADERS_DIR "${CMAKE_SOURCE_DIR}/data/shaders")
+    set(HEADERS_DIR "${CMAKE_SOURCE_DIR}/source/core/rendering/sdl3gpu")
+
+    set(ALL_SHADER_HEADERS
+        "${HEADERS_DIR}/postfx_vert_spv.h"
+        "${HEADERS_DIR}/postfx_frag_spv.h"
+        "${HEADERS_DIR}/upscale_frag_spv.h"
+        "${HEADERS_DIR}/downscale_frag_spv.h"
+        "${HEADERS_DIR}/crtpi_frag_spv.h"
+    )
+    set(ALL_SHADER_SOURCES
+        "${SHADERS_DIR}/postfx.vert"
+        "${SHADERS_DIR}/postfx.frag"
+        "${SHADERS_DIR}/upscale.frag"
+        "${SHADERS_DIR}/downscale.frag"
+        "${SHADERS_DIR}/crtpi_frag.glsl"
+    )
+
+    if(GLSLC_EXE)
+        add_custom_command(
+            OUTPUT  ${ALL_SHADER_HEADERS}
+            COMMAND ${CMAKE_COMMAND}
+                    -D GLSLC=${GLSLC_EXE}
+                    -D SHADERS_DIR=${SHADERS_DIR}
+                    -D HEADERS_DIR=${HEADERS_DIR}
+                    -P ${CMAKE_SOURCE_DIR}/tools/shaders/compile_spirv.cmake
+            DEPENDS ${ALL_SHADER_SOURCES}
+            WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
+            COMMENT "Compilant shaders SPIR-V..."
+        )
+        add_custom_target(shaders DEPENDS ${ALL_SHADER_HEADERS})
+        message(STATUS "glslc trobat: shaders es compilaran automàticament")
+    else()
+        foreach(HDR ${ALL_SHADER_HEADERS})
+            if(NOT EXISTS "${HDR}")
+                message(FATAL_ERROR
+                    "glslc no trobat i header SPIR-V no existeix: ${HDR}\n"
+                    "  Instal·la glslc: sudo apt install glslang-tools  (Linux)\n"
+                    "                   choco install vulkan-sdk         (Windows)"
+                )
+            endif()
+        endforeach()
+        message(STATUS "glslc no trobat — usant headers SPIR-V precompilats")
+    endif()
+else()
+    message(STATUS "macOS: shaders SPIR-V omesos (usa Metal)")
+endif()
+
 # --- EJECUTABLE ---
 add_executable(${PROJECT_NAME} ${APP_SOURCES})
 
+# Shaders han de compilar-se abans que l'executable (Linux/Windows amb glslc)
+if(NOT APPLE AND GLSLC_EXE)
+    add_dependencies(${PROJECT_NAME} shaders)
+endif()
+
 # --- DIRECTORIOS DE INCLUSIÓN ---
 target_include_directories(${PROJECT_NAME} PUBLIC
     "${CMAKE_SOURCE_DIR}/source"