treballant en postfx
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JailDesigner committed
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#pragma once
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#include <cstdint>
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#include <cstddef>
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static const uint8_t kpostfx_frag_spv[] = { 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truncated
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static const size_t kpostfx_frag_spv_size = 3024;
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#pragma once
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#include <cstdint>
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#include <cstddef>
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||||
static const uint8_t kpostfx_vert_spv[] = { 0x03,0x02,0x23,0x07,0x00,0x00,0x01,0x00,0x0b,0x00,0x0d,0x00,0x33,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x11,0x00,0x02,0x00,0x01,0x00,0x00,0x00,0x0b,0x00,0x06,0x00,0x01,0x00,0x00,0x00,0x47,0x4c,0x53,0x4c,0x2e,0x73,0x74,0x64,0x2e,0x34,0x35,0x30,0x00,0x00,0x00,0x00,0x0e,0x00,0x03,0x00,0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x0f,0x00,0x08,0x00,0x00,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x6d,0x61,0x69,0x6e,0x00,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x24,0x00,0x00,0x00,0x2f,0x00,0x00,0x00,0x03,0x00,0x03,0x00,0x02,0x00,0x00,0x00,0xc2,0x01,0x00,0x00,0x04,0x00,0x0a,0x00,0x47,0x4c,0x5f,0x47,0x4f,0x4f,0x47,0x4c,0x45,0x5f,0x63,0x70,0x70,0x5f,0x73,0x74,0x79,0x6c,0x65,0x5f,0x6c,0x69,0x6e,0x65,0x5f,0x64,0x69,0x72,0x65,0x63,0x74,0x69,0x76,0x65,0x00,0x00,0x04,0x00,0x08,0x00,0x47,0x4c,0x5f,0x47,0x4f,0x4f,0x47,0x4c,0x45,0x5f,0x69,0x6e,0x63,0x6c,0x75,0x64,0x65,0x5f,0x64,0x69,0x72,0x65,0x63,0x74,0x69,0x76,0x65,0x00,0x05,0x00,0x04,0x00,0x04,0x00,0x00,0x00,0x6d,0x61,0x69,0x6e,0x00,0x00,0x00,0x00,0x05,0x00,0x05,0x00,0x0c,0x00,0x00,0x00,0x70,0x6f,0x73,0x69,0x74,0x69,0x6f,0x6e,0x73,0x00,0x00,0x00,0x05,0x00,0x03,0x00,0x13,0x00,0x00,0x00,0x75,0x76,0x73,0x00,0x05,0x00,0x06,0x00,0x1e,0x00,0x00,0x00,0x67,0x6c,0x5f,0x50,0x65,0x72,0x56,0x65,0x72,0x74,0x65,0x78,0x00,0x00,0x00,0x00,0x06,0x00,0x06,0x00,0x1e,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x67,0x6c,0x5f,0x50,0x6f,0x73,0x69,0x74,0x69,0x6f,0x6e,0x00,0x06,0x00,0x07,0x00,0x1e,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x67,0x6c,0x5f,0x50,0x6f,0x69,0x6e,0x74,0x53,0x69,0x7a,0x65,0x00,0x00,0x00,0x00,0x06,0x00,0x07,0x00,0x1e,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x67,0x6c,0x5f,0x43,0x6c,0x69,0x70,0x44,0x69,0x73,0x74,0x61,0x6e,0x63,0x65,0x00,0x06,0x00,0x07,0x00,0x1e,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x67,0x6c,0x5f,0x43,0x75,0x6c,0x6c,0x44,0x69,0x73,0x74,0x61,0x6e,0x63,0x65,0x00,0x05,0x00,0x03,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x05,0x00,0x06,0x00,0x24,0x00,0x00,0x00,0x67,0x6c,0x5f,0x56,0x65,0x72,0x74,0x65,0x78,0x49,0x6e,0x64,0x65,0x78,0x00,0x00,0x05,0x00,0x04,0x00,0x2f,0x00,0x00,0x00,0x76,0x5f,0x75,0x76,0x00,0x00,0x00,0x00,0x47,0x00,0x03,0x00,0x1e,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x48,0x00,0x05,0x00,0x1e,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0b,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x48,0x00,0x05,0x00,0x1e,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x0b,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x48,0x00,0x05,0x00,0x1e,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x0b,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x48,0x00,0x05,0x00,0x1e,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x0b,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x47,0x00,0x04,0x00,0x24,0x00,0x00,0x00,0x0b,0x00,0x00,0x00,0x2a,0x00,0x00,0x00,0x47,0x00,0x04,0x00,0x2f,0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x13,0x00,0x02,0x00,0x02,0x00,0x00,0x00,0x21,0x00,0x03,0x00,0x03,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x16,0x00,0x03,0x00,0x06,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x17,0x00,0x04,0x00,0x07,0x00,0x00,0x00,0x06,0x00,0x00,0x00,0x02,0x00,0x00,0x00,0x15,0x00,0x04,0x00,0x08,0x00,0x00,0x00,0x20,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x2b,0x00,0x04,0x00,0x08,0x00,0x00,0x00,0x09,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x1c,0x00,0x04,0x00,0x0a,0x00,0x00,0x00,0x07,0x00,0x00,0x00,0x09,0x00,0x00,0x00,0x20,0x00,0x04,0x00,0x0b,0x00,0x00,0x00,0x07,0x00,0x00,0x00,0x0a,0x00,0x00,0x00,0x2b,0x00,0x04,0x00,0x06,0x00,0x00,0x00,0x0d,0x00,0x00,0x00,0x00,0x00,0x80,0xbf,0x2c,0x00,0x05,0x00,0x07,0x00,0x00,0x00,0x0e,0x00,0x00,0x00,0x0d,0x00,0x00,0x00,0x0d,0x00,0x00,0x00,0x2b,0x00,0x04,0x00,0x06,0x00,0x00,0x00,0x0f,0x00,0x00,0x00,0x00,0x00,0x40,0x40,0x2c,0x00,0x05,0x00,0x07,0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x0f,0x00,0x00,0x00,0x0d,0x00,0x00,0x00,0x2c,0x00,0x05,0x00,0x07,0x00,0x00,0x00,0x11,0x00,0x00,0x00,0x0d,0x00,0x00,0x00,0x0f,0x00,0x00,0x00,0x2c,0x00,0x06,0x00,0x0a,0x00,0x00,0x00,0x12,0x00,0x00,0x00,0x0e,0x00,0x00,0x00,0x10,0x00,0x00,0x00,0x11,0x00,0x00,0x00,0x2b,0x00,0x04,0x00,0x06,0x00,0x00,0x00,0x14,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x2b,0x00,0x04,0x00,0x06,0x00,0x00,0x00,0x15,0x00,0x00,0x00,0x00,0x00,0x80,0x3f,0x2c,0x00,0x05,0x00,0x07,0x00,0x00,0x00,0x16,0x00,0x00,0x00,0x14,0x00,0x00,0x00,0x15,0x00,0x00,0x00,0x2b,0x00,0x04,0x00,0x06,0x00,0x00,0x00,0x17,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x2c,0x00,0x05,0x00,0x07,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x17,0x00,0x00,0x00,0x15,0x00,0x00,0x00,0x2c,0x00,0x05,0x00,0x07,0x00,0x00,0x00,0x19,0x00,0x00,0x00,0x14,0x00,0x00,0x00,0x0d,0x00,0x00,0x00,0x2c,0x00,0x06,0x00,0x0a,0x00,0x00,0x00,0x1a,0x00,0x00,0x00,0x16,0x00,0x00,0x00,0x18,0x00,0x00,0x00,0x19,0x00,0x00,0x00,0x17,0x00,0x04,0x00,0x1b,0x00,0x00,0x00,0x06,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x2b,0x00,0x04,0x00,0x08,0x00,0x00,0x00,0x1c,0x00,0x00,0x00,0x01,0x00,0x00,0x00,0x1c,0x00,0x04,0x00,0x1d,0x00,0x00,0x00,0x06,0x00,0x00,0x00,0x1c,0x00,0x00,0x00,0x1e,0x00,0x06,0x00,0x1e,0x00,0x00,0x00,0x1b,0x00,0x00,0x00,0x06,0x00,0x00,0x00,0x1d,0x00,0x00,0x00,0x1d,0x00,0x00,0x00,0x20,0x00,0x04,0x00,0x1f,0x00,0x00,0x00,0x03,0x00,0x00,0x00,0x1e,0x00,0x00,0x00,0x3b,0x00,0x04,0x00,0x1f,0x00,0x00,Line truncated
|
||||
static const size_t kpostfx_vert_spv_size = 1436;
|
||||
@@ -0,0 +1,419 @@
|
||||
#include "core/rendering/sdl3gpu/sdl3gpu_shader.hpp"
|
||||
|
||||
#include <SDL3/SDL_log.h>
|
||||
|
||||
#include <cstring> // memcpy, strlen
|
||||
|
||||
#ifndef __APPLE__
|
||||
#include "core/rendering/sdl3gpu/postfx_frag_spv.h"
|
||||
#include "core/rendering/sdl3gpu/postfx_vert_spv.h"
|
||||
#endif
|
||||
|
||||
#ifdef __APPLE__
|
||||
// ============================================================================
|
||||
// MSL shaders (Metal Shading Language) — macOS
|
||||
// ============================================================================
|
||||
|
||||
// NOLINTBEGIN(readability-identifier-naming)
|
||||
static const char* POSTFX_VERT_MSL = R"(
|
||||
#include <metal_stdlib>
|
||||
using namespace metal;
|
||||
|
||||
struct PostVOut {
|
||||
float4 pos [[position]];
|
||||
float2 uv;
|
||||
};
|
||||
|
||||
vertex PostVOut postfx_vs(uint vid [[vertex_id]]) {
|
||||
const float2 positions[3] = { {-1.0, -1.0}, {3.0, -1.0}, {-1.0, 3.0} };
|
||||
const float2 uvs[3] = { { 0.0, 1.0}, {2.0, 1.0}, { 0.0,-1.0} };
|
||||
PostVOut out;
|
||||
out.pos = float4(positions[vid], 0.0, 1.0);
|
||||
out.uv = uvs[vid];
|
||||
return out;
|
||||
}
|
||||
)";
|
||||
|
||||
static const char* POSTFX_FRAG_MSL = R"(
|
||||
#include <metal_stdlib>
|
||||
using namespace metal;
|
||||
|
||||
struct PostVOut {
|
||||
float4 pos [[position]];
|
||||
float2 uv;
|
||||
};
|
||||
|
||||
struct PostFXUniforms {
|
||||
float vignette_strength;
|
||||
float chroma_strength;
|
||||
float scanline_strength;
|
||||
float screen_height;
|
||||
};
|
||||
|
||||
fragment float4 postfx_fs(PostVOut in [[stage_in]],
|
||||
texture2d<float> scene [[texture(0)]],
|
||||
sampler samp [[sampler(0)]],
|
||||
constant PostFXUniforms& u [[buffer(0)]]) {
|
||||
float ca = u.chroma_strength * 0.005;
|
||||
float4 color;
|
||||
color.r = scene.sample(samp, in.uv + float2( ca, 0.0)).r;
|
||||
color.g = scene.sample(samp, in.uv).g;
|
||||
color.b = scene.sample(samp, in.uv - float2( ca, 0.0)).b;
|
||||
color.a = scene.sample(samp, in.uv).a;
|
||||
|
||||
float scan = 0.85 + 0.15 * sin(in.uv.y * 3.14159265 * u.screen_height);
|
||||
color.rgb *= mix(1.0, scan, u.scanline_strength);
|
||||
|
||||
float2 d = in.uv - float2(0.5, 0.5);
|
||||
float vignette = 1.0 - dot(d, d) * u.vignette_strength;
|
||||
color.rgb *= clamp(vignette, 0.0, 1.0);
|
||||
|
||||
return color;
|
||||
}
|
||||
)";
|
||||
// NOLINTEND(readability-identifier-naming)
|
||||
|
||||
#endif // __APPLE__
|
||||
|
||||
namespace Rendering {
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Destructor
|
||||
// ---------------------------------------------------------------------------
|
||||
SDL3GPUShader::~SDL3GPUShader() {
|
||||
cleanup();
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// init
|
||||
// ---------------------------------------------------------------------------
|
||||
auto SDL3GPUShader::init(SDL_Window* window,
|
||||
SDL_Texture* texture,
|
||||
const std::string& /*vertex_source*/,
|
||||
const std::string& /*fragment_source*/) -> bool {
|
||||
// Si ya estaba inicializado, limpiar antes de reinicializar (p.ej. al cambiar borde)
|
||||
if (is_initialized_) {
|
||||
cleanup();
|
||||
}
|
||||
|
||||
window_ = window;
|
||||
|
||||
// Dimensions from the SDL_Texture placeholder
|
||||
float fw = 0.0F;
|
||||
float fh = 0.0F;
|
||||
SDL_GetTextureSize(texture, &fw, &fh);
|
||||
tex_width_ = static_cast<int>(fw);
|
||||
tex_height_ = static_cast<int>(fh);
|
||||
uniforms_.screen_height = fh;
|
||||
|
||||
// ----------------------------------------------------------------
|
||||
// 1. Create GPU device
|
||||
// ----------------------------------------------------------------
|
||||
#ifdef __APPLE__
|
||||
const SDL_GPUShaderFormat PREFERRED = SDL_GPU_SHADERFORMAT_MSL | SDL_GPU_SHADERFORMAT_METALLIB;
|
||||
#else
|
||||
const SDL_GPUShaderFormat PREFERRED = SDL_GPU_SHADERFORMAT_SPIRV;
|
||||
#endif
|
||||
device_ = SDL_CreateGPUDevice(PREFERRED, false, nullptr);
|
||||
if (device_ == nullptr) {
|
||||
SDL_Log("SDL3GPUShader: SDL_CreateGPUDevice failed: %s", SDL_GetError());
|
||||
return false;
|
||||
}
|
||||
SDL_Log("SDL3GPUShader: driver = %s", SDL_GetGPUDeviceDriver(device_));
|
||||
|
||||
// ----------------------------------------------------------------
|
||||
// 2. Claim window (GPU device owns the swapchain from now on)
|
||||
// ----------------------------------------------------------------
|
||||
if (!SDL_ClaimWindowForGPUDevice(device_, window_)) {
|
||||
SDL_Log("SDL3GPUShader: SDL_ClaimWindowForGPUDevice failed: %s", SDL_GetError());
|
||||
SDL_DestroyGPUDevice(device_);
|
||||
device_ = nullptr;
|
||||
return false;
|
||||
}
|
||||
SDL_SetGPUSwapchainParameters(device_, window_,
|
||||
SDL_GPU_SWAPCHAINCOMPOSITION_SDR,
|
||||
SDL_GPU_PRESENTMODE_VSYNC);
|
||||
|
||||
// ----------------------------------------------------------------
|
||||
// 3. Create scene texture (upload target + sampler source)
|
||||
// Format: B8G8R8A8_UNORM matches SDL ARGB8888 byte layout on LE
|
||||
// ----------------------------------------------------------------
|
||||
SDL_GPUTextureCreateInfo tex_info = {};
|
||||
tex_info.type = SDL_GPU_TEXTURETYPE_2D;
|
||||
tex_info.format = SDL_GPU_TEXTUREFORMAT_B8G8R8A8_UNORM;
|
||||
tex_info.usage = SDL_GPU_TEXTUREUSAGE_SAMPLER;
|
||||
tex_info.width = static_cast<Uint32>(tex_width_);
|
||||
tex_info.height = static_cast<Uint32>(tex_height_);
|
||||
tex_info.layer_count_or_depth = 1;
|
||||
tex_info.num_levels = 1;
|
||||
scene_texture_ = SDL_CreateGPUTexture(device_, &tex_info);
|
||||
if (scene_texture_ == nullptr) {
|
||||
SDL_Log("SDL3GPUShader: failed to create scene texture: %s", SDL_GetError());
|
||||
cleanup();
|
||||
return false;
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------
|
||||
// 4. Create upload transfer buffer (CPU → GPU, size = w*h*4 bytes)
|
||||
// ----------------------------------------------------------------
|
||||
SDL_GPUTransferBufferCreateInfo tb_info = {};
|
||||
tb_info.usage = SDL_GPU_TRANSFERBUFFERUSAGE_UPLOAD;
|
||||
tb_info.size = static_cast<Uint32>(tex_width_ * tex_height_ * 4);
|
||||
upload_buffer_ = SDL_CreateGPUTransferBuffer(device_, &tb_info);
|
||||
if (upload_buffer_ == nullptr) {
|
||||
SDL_Log("SDL3GPUShader: failed to create upload buffer: %s", SDL_GetError());
|
||||
cleanup();
|
||||
return false;
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------
|
||||
// 5. Create nearest-neighbour sampler (retro pixel art)
|
||||
// ----------------------------------------------------------------
|
||||
SDL_GPUSamplerCreateInfo samp_info = {};
|
||||
samp_info.min_filter = SDL_GPU_FILTER_NEAREST;
|
||||
samp_info.mag_filter = SDL_GPU_FILTER_NEAREST;
|
||||
samp_info.mipmap_mode = SDL_GPU_SAMPLERMIPMAPMODE_NEAREST;
|
||||
samp_info.address_mode_u = SDL_GPU_SAMPLERADDRESSMODE_CLAMP_TO_EDGE;
|
||||
samp_info.address_mode_v = SDL_GPU_SAMPLERADDRESSMODE_CLAMP_TO_EDGE;
|
||||
samp_info.address_mode_w = SDL_GPU_SAMPLERADDRESSMODE_CLAMP_TO_EDGE;
|
||||
sampler_ = SDL_CreateGPUSampler(device_, &samp_info);
|
||||
if (sampler_ == nullptr) {
|
||||
SDL_Log("SDL3GPUShader: failed to create sampler: %s", SDL_GetError());
|
||||
cleanup();
|
||||
return false;
|
||||
}
|
||||
|
||||
// ----------------------------------------------------------------
|
||||
// 6. Create PostFX graphics pipeline
|
||||
// ----------------------------------------------------------------
|
||||
if (!createPipeline()) {
|
||||
cleanup();
|
||||
return false;
|
||||
}
|
||||
|
||||
is_initialized_ = true;
|
||||
SDL_Log("SDL3GPUShader: initialized OK (%dx%d)", tex_width_, tex_height_);
|
||||
return true;
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// createPipeline
|
||||
// ---------------------------------------------------------------------------
|
||||
auto SDL3GPUShader::createPipeline() -> bool {
|
||||
const SDL_GPUTextureFormat SWAPCHAIN_FMT = SDL_GetGPUSwapchainTextureFormat(device_, window_);
|
||||
|
||||
#ifdef __APPLE__
|
||||
SDL_GPUShader* vert = createShaderMSL(device_, POSTFX_VERT_MSL, "postfx_vs",
|
||||
SDL_GPU_SHADERSTAGE_VERTEX, 0, 0);
|
||||
SDL_GPUShader* frag = createShaderMSL(device_, POSTFX_FRAG_MSL, "postfx_fs",
|
||||
SDL_GPU_SHADERSTAGE_FRAGMENT, 1, 1);
|
||||
#else
|
||||
SDL_GPUShader* vert = createShaderSPIRV(device_, kpostfx_vert_spv, kpostfx_vert_spv_size,
|
||||
"main", SDL_GPU_SHADERSTAGE_VERTEX, 0, 0);
|
||||
SDL_GPUShader* frag = createShaderSPIRV(device_, kpostfx_frag_spv, kpostfx_frag_spv_size,
|
||||
"main", SDL_GPU_SHADERSTAGE_FRAGMENT, 1, 1);
|
||||
#endif
|
||||
|
||||
if ((vert == nullptr) || (frag == nullptr)) {
|
||||
SDL_Log("SDL3GPUShader: failed to compile PostFX shaders");
|
||||
if (vert != nullptr) { SDL_ReleaseGPUShader(device_, vert); }
|
||||
if (frag != nullptr) { SDL_ReleaseGPUShader(device_, frag); }
|
||||
return false;
|
||||
}
|
||||
|
||||
SDL_GPUColorTargetBlendState no_blend = {};
|
||||
no_blend.enable_blend = false;
|
||||
no_blend.enable_color_write_mask = false;
|
||||
|
||||
SDL_GPUColorTargetDescription color_target = {};
|
||||
color_target.format = SWAPCHAIN_FMT;
|
||||
color_target.blend_state = no_blend;
|
||||
|
||||
SDL_GPUVertexInputState no_input = {};
|
||||
|
||||
SDL_GPUGraphicsPipelineCreateInfo pipe_info = {};
|
||||
pipe_info.vertex_shader = vert;
|
||||
pipe_info.fragment_shader = frag;
|
||||
pipe_info.vertex_input_state = no_input;
|
||||
pipe_info.primitive_type = SDL_GPU_PRIMITIVETYPE_TRIANGLELIST;
|
||||
pipe_info.target_info.num_color_targets = 1;
|
||||
pipe_info.target_info.color_target_descriptions = &color_target;
|
||||
|
||||
pipeline_ = SDL_CreateGPUGraphicsPipeline(device_, &pipe_info);
|
||||
|
||||
SDL_ReleaseGPUShader(device_, vert);
|
||||
SDL_ReleaseGPUShader(device_, frag);
|
||||
|
||||
if (pipeline_ == nullptr) {
|
||||
SDL_Log("SDL3GPUShader: pipeline creation failed: %s", SDL_GetError());
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// uploadPixels — copies ARGB8888 CPU pixels into the GPU transfer buffer
|
||||
// ---------------------------------------------------------------------------
|
||||
void SDL3GPUShader::uploadPixels(const Uint32* pixels, int width, int height) {
|
||||
if (!is_initialized_ || (upload_buffer_ == nullptr)) { return; }
|
||||
|
||||
void* mapped = SDL_MapGPUTransferBuffer(device_, upload_buffer_, false);
|
||||
if (mapped == nullptr) {
|
||||
SDL_Log("SDL3GPUShader: SDL_MapGPUTransferBuffer failed: %s", SDL_GetError());
|
||||
return;
|
||||
}
|
||||
std::memcpy(mapped, pixels, static_cast<size_t>(width * height * 4));
|
||||
SDL_UnmapGPUTransferBuffer(device_, upload_buffer_);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// render — upload scene texture + PostFX pass → swapchain
|
||||
// ---------------------------------------------------------------------------
|
||||
void SDL3GPUShader::render() {
|
||||
if (!is_initialized_) { return; }
|
||||
|
||||
SDL_GPUCommandBuffer* cmd = SDL_AcquireGPUCommandBuffer(device_);
|
||||
if (cmd == nullptr) {
|
||||
SDL_Log("SDL3GPUShader: SDL_AcquireGPUCommandBuffer failed: %s", SDL_GetError());
|
||||
return;
|
||||
}
|
||||
|
||||
// ---- Copy pass: transfer buffer → scene texture ----
|
||||
SDL_GPUCopyPass* copy = SDL_BeginGPUCopyPass(cmd);
|
||||
if (copy != nullptr) {
|
||||
SDL_GPUTextureTransferInfo src = {};
|
||||
src.transfer_buffer = upload_buffer_;
|
||||
src.offset = 0;
|
||||
src.pixels_per_row = static_cast<Uint32>(tex_width_);
|
||||
src.rows_per_layer = static_cast<Uint32>(tex_height_);
|
||||
|
||||
SDL_GPUTextureRegion dst = {};
|
||||
dst.texture = scene_texture_;
|
||||
dst.w = static_cast<Uint32>(tex_width_);
|
||||
dst.h = static_cast<Uint32>(tex_height_);
|
||||
dst.d = 1;
|
||||
|
||||
SDL_UploadToGPUTexture(copy, &src, &dst, false);
|
||||
SDL_EndGPUCopyPass(copy);
|
||||
}
|
||||
|
||||
// ---- Acquire swapchain texture ----
|
||||
SDL_GPUTexture* swapchain = nullptr;
|
||||
Uint32 sw = 0;
|
||||
Uint32 sh = 0;
|
||||
if (!SDL_AcquireGPUSwapchainTexture(cmd, window_, &swapchain, &sw, &sh)) {
|
||||
SDL_Log("SDL3GPUShader: SDL_AcquireGPUSwapchainTexture failed: %s", SDL_GetError());
|
||||
SDL_SubmitGPUCommandBuffer(cmd);
|
||||
return;
|
||||
}
|
||||
if (swapchain == nullptr) {
|
||||
// Window minimized — skip frame
|
||||
SDL_SubmitGPUCommandBuffer(cmd);
|
||||
return;
|
||||
}
|
||||
|
||||
// ---- Render pass: PostFX → swapchain ----
|
||||
SDL_GPUColorTargetInfo color_target = {};
|
||||
color_target.texture = swapchain;
|
||||
color_target.load_op = SDL_GPU_LOADOP_CLEAR;
|
||||
color_target.store_op = SDL_GPU_STOREOP_STORE;
|
||||
color_target.clear_color = {.r = 0.0F, .g = 0.0F, .b = 0.0F, .a = 1.0F};
|
||||
|
||||
SDL_GPURenderPass* pass = SDL_BeginGPURenderPass(cmd, &color_target, 1, nullptr);
|
||||
if (pass != nullptr) {
|
||||
SDL_BindGPUGraphicsPipeline(pass, pipeline_);
|
||||
|
||||
SDL_GPUTextureSamplerBinding binding = {};
|
||||
binding.texture = scene_texture_;
|
||||
binding.sampler = sampler_;
|
||||
SDL_BindGPUFragmentSamplers(pass, 0, &binding, 1);
|
||||
|
||||
SDL_PushGPUFragmentUniformData(cmd, 0, &uniforms_, sizeof(PostFXUniforms));
|
||||
|
||||
SDL_DrawGPUPrimitives(pass, 3, 1, 0, 0);
|
||||
SDL_EndGPURenderPass(pass);
|
||||
}
|
||||
|
||||
SDL_SubmitGPUCommandBuffer(cmd);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// cleanup
|
||||
// ---------------------------------------------------------------------------
|
||||
void SDL3GPUShader::cleanup() {
|
||||
is_initialized_ = false;
|
||||
|
||||
if (device_ != nullptr) {
|
||||
SDL_WaitForGPUIdle(device_);
|
||||
|
||||
if (pipeline_ != nullptr) {
|
||||
SDL_ReleaseGPUGraphicsPipeline(device_, pipeline_);
|
||||
pipeline_ = nullptr;
|
||||
}
|
||||
if (scene_texture_ != nullptr) {
|
||||
SDL_ReleaseGPUTexture(device_, scene_texture_);
|
||||
scene_texture_ = nullptr;
|
||||
}
|
||||
if (upload_buffer_ != nullptr) {
|
||||
SDL_ReleaseGPUTransferBuffer(device_, upload_buffer_);
|
||||
upload_buffer_ = nullptr;
|
||||
}
|
||||
if (sampler_ != nullptr) {
|
||||
SDL_ReleaseGPUSampler(device_, sampler_);
|
||||
sampler_ = nullptr;
|
||||
}
|
||||
|
||||
SDL_ReleaseWindowFromGPUDevice(device_, window_);
|
||||
SDL_DestroyGPUDevice(device_);
|
||||
device_ = nullptr;
|
||||
}
|
||||
window_ = nullptr;
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Shader creation helpers
|
||||
// ---------------------------------------------------------------------------
|
||||
auto SDL3GPUShader::createShaderMSL(SDL_GPUDevice* device,
|
||||
const char* msl_source,
|
||||
const char* entrypoint,
|
||||
SDL_GPUShaderStage stage,
|
||||
Uint32 num_samplers,
|
||||
Uint32 num_uniform_buffers) -> SDL_GPUShader* {
|
||||
SDL_GPUShaderCreateInfo info = {};
|
||||
info.code = reinterpret_cast<const Uint8*>(msl_source);
|
||||
info.code_size = std::strlen(msl_source) + 1;
|
||||
info.entrypoint = entrypoint;
|
||||
info.format = SDL_GPU_SHADERFORMAT_MSL;
|
||||
info.stage = stage;
|
||||
info.num_samplers = num_samplers;
|
||||
info.num_uniform_buffers = num_uniform_buffers;
|
||||
SDL_GPUShader* shader = SDL_CreateGPUShader(device, &info);
|
||||
if (shader == nullptr) {
|
||||
SDL_Log("SDL3GPUShader: MSL shader '%s' failed: %s", entrypoint, SDL_GetError());
|
||||
}
|
||||
return shader;
|
||||
}
|
||||
|
||||
auto SDL3GPUShader::createShaderSPIRV(SDL_GPUDevice* device,
|
||||
const uint8_t* spv_code,
|
||||
size_t spv_size,
|
||||
const char* entrypoint,
|
||||
SDL_GPUShaderStage stage,
|
||||
Uint32 num_samplers,
|
||||
Uint32 num_uniform_buffers) -> SDL_GPUShader* {
|
||||
SDL_GPUShaderCreateInfo info = {};
|
||||
info.code = spv_code;
|
||||
info.code_size = spv_size;
|
||||
info.entrypoint = entrypoint;
|
||||
info.format = SDL_GPU_SHADERFORMAT_SPIRV;
|
||||
info.stage = stage;
|
||||
info.num_samplers = num_samplers;
|
||||
info.num_uniform_buffers = num_uniform_buffers;
|
||||
SDL_GPUShader* shader = SDL_CreateGPUShader(device, &info);
|
||||
if (shader == nullptr) {
|
||||
SDL_Log("SDL3GPUShader: SPIRV shader '%s' failed: %s", entrypoint, SDL_GetError());
|
||||
}
|
||||
return shader;
|
||||
}
|
||||
|
||||
} // namespace Rendering
|
||||
@@ -0,0 +1,76 @@
|
||||
#pragma once
|
||||
|
||||
#include <SDL3/SDL.h>
|
||||
#include <SDL3/SDL_gpu.h>
|
||||
|
||||
#include "core/rendering/shader_backend.hpp"
|
||||
|
||||
// PostFX uniforms pushed to fragment stage each frame.
|
||||
// Must match the MSL struct and GLSL uniform block layout.
|
||||
struct PostFXUniforms {
|
||||
float vignette_strength; // 0 = none, ~0.8 = subtle
|
||||
float chroma_strength; // 0 = off, ~0.2 = subtle chromatic aberration
|
||||
float scanline_strength; // 0 = off, 1 = full
|
||||
float screen_height; // logical height in pixels (for resolution-independent scanlines)
|
||||
};
|
||||
|
||||
namespace Rendering {
|
||||
|
||||
/**
|
||||
* @brief Backend de shaders usando SDL3 GPU API (Metal en macOS, Vulkan/SPIR-V en Win/Linux)
|
||||
*
|
||||
* Reemplaza el backend OpenGL para que los shaders PostFX funcionen en macOS.
|
||||
* Pipeline: Surface pixels (CPU) → SDL_GPUTransferBuffer → SDL_GPUTexture (scene)
|
||||
* → PostFX render pass → swapchain → present
|
||||
*/
|
||||
class SDL3GPUShader : public ShaderBackend {
|
||||
public:
|
||||
SDL3GPUShader() = default;
|
||||
~SDL3GPUShader() override;
|
||||
|
||||
auto init(SDL_Window* window,
|
||||
SDL_Texture* texture,
|
||||
const std::string& vertex_source,
|
||||
const std::string& fragment_source) -> bool override;
|
||||
|
||||
void render() override;
|
||||
void setTextureSize(float width, float height) override {}
|
||||
void cleanup() override;
|
||||
[[nodiscard]] auto isHardwareAccelerated() const -> bool override { return is_initialized_; }
|
||||
|
||||
// Sube píxeles ARGB8888 desde CPU; llamado antes de render()
|
||||
void uploadPixels(const Uint32* pixels, int width, int height) override;
|
||||
|
||||
private:
|
||||
static auto createShaderMSL(SDL_GPUDevice* device,
|
||||
const char* msl_source,
|
||||
const char* entrypoint,
|
||||
SDL_GPUShaderStage stage,
|
||||
Uint32 num_samplers,
|
||||
Uint32 num_uniform_buffers) -> SDL_GPUShader*;
|
||||
|
||||
static auto createShaderSPIRV(SDL_GPUDevice* device,
|
||||
const uint8_t* spv_code,
|
||||
size_t spv_size,
|
||||
const char* entrypoint,
|
||||
SDL_GPUShaderStage stage,
|
||||
Uint32 num_samplers,
|
||||
Uint32 num_uniform_buffers) -> SDL_GPUShader*;
|
||||
|
||||
auto createPipeline() -> bool;
|
||||
|
||||
SDL_Window* window_ = nullptr;
|
||||
SDL_GPUDevice* device_ = nullptr;
|
||||
SDL_GPUGraphicsPipeline* pipeline_ = nullptr;
|
||||
SDL_GPUTexture* scene_texture_ = nullptr;
|
||||
SDL_GPUTransferBuffer* upload_buffer_ = nullptr;
|
||||
SDL_GPUSampler* sampler_ = nullptr;
|
||||
|
||||
PostFXUniforms uniforms_{.vignette_strength = 0.6F, .chroma_strength = 0.15F, .scanline_strength = 0.7F, .screen_height = 192.0F};
|
||||
|
||||
int tex_width_ = 0;
|
||||
int tex_height_ = 0;
|
||||
bool is_initialized_ = false;
|
||||
};
|
||||
|
||||
} // namespace Rendering
|
||||
Reference in new issue
Block a user