mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 18:25:35 -04:00
Matthew Stanley
0ac63b655c
Vulkan backend alongside software + OpenGL: geometry/textured-prim pipelines, GPU-authoritative VRAM image, deferred-submit + drain-at-present perf model, GPU-direct present (vk_renderer_present_vram), and a full-VRAM-pack readback path (ensure_cpu rect_adds the whole VRAM rect before pack_flush so screenshots/guest VRAM reads reflect live content, not just the incremental pack-dirty rect — readback-only, no per-frame cost). Runtime plumbing: --debug-port / --renderer / --window-title CLI overrides (multi-instance fleet), latency_ring, SPIR-V shaders + embed_spirv.py, config_loader renderer selection, debug_server screenshot wiring. All on feat/vulkan-renderer; snapshot in backup/vulkan-wip-20260617. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
26 lines
1.2 KiB
Plaintext
26 lines
1.2 KiB
Plaintext
#version 450
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/* PACK: re-encode the RGBA8 supersampled VRAM image into the native R16_UINT
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* raw mirror (the texture-sampling source). Each native pixel takes the
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* top-left sample of its SxS block (the sample at the exact native coord), so
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* the raw mirror is the bit-exact 1555 value the PS1 would have written.
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* Dispatched over the dirty rect: global id + (off_x,off_y) = native coord.
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* Ported from the GL backend's PACK_FS (fragment) to a compute pass. */
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layout(local_size_x = 8, local_size_y = 8) in;
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layout(set = 0, binding = 0) uniform sampler2D u_hr; /* RGBA8 VRAM image */
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layout(set = 0, binding = 1, r16ui) uniform writeonly uimage2D u_raw;
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layout(push_constant) uniform PC {
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int u_scale;
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int off_x;
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int off_y;
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} pc;
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void main() {
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ivec2 p = ivec2(gl_GlobalInvocationID.xy) + ivec2(pc.off_x, pc.off_y);
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if (p.x >= 1024 || p.y >= 512) return;
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vec4 c = texelFetch(u_hr, p * pc.u_scale, 0);
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uint r = uint(c.r * 255.0 + 0.5) >> 3;
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uint g = uint(c.g * 255.0 + 0.5) >> 3;
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uint b = uint(c.b * 255.0 + 0.5) >> 3;
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uint o = r | (g << 5) | (b << 10) | (c.a >= 0.5 ? 0x8000u : 0u);
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imageStore(u_raw, p, uvec4(o, 0, 0, 0));
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}
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