mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-26 10:19:47 -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>
25 lines
1.1 KiB
GLSL
25 lines
1.1 KiB
GLSL
#version 450
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/* Untextured geometry (flat / gouraud triangles, lines, flat rects).
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* Position is in PSX VRAM pixel space (0..1024, 0..512); map to NDC for the
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* 1024x512 VRAM image (resolution-independent, so the SxS supersample is just
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* a larger framebuffer). VRAM y increases downward; Vulkan clip y also points
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* down, so VRAM y=0 lands at image row 0 (top) with no flip.
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*
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* u_shift = half an HR pixel (0.5/S in native units): the rasterizer samples
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* coverage at pixel centers, the PS1 DDA at integer coords. The shift aligns
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* the two grids (matches the GL backend's GEO_VS). u_xoff/u_xhalf carry the
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* native-wide x translation / clip half-extent (0 / 512 canonical; Phase 4). */
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layout(location = 0) in vec2 in_pos;
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layout(location = 1) in vec4 in_col;
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layout(push_constant) uniform PC {
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float u_shift;
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float u_xoff;
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float u_xhalf;
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} pc;
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layout(location = 0) noperspective out vec4 v_col;
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void main() {
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gl_Position = vec4((in_pos.x + pc.u_shift + pc.u_xoff) / pc.u_xhalf - 1.0,
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(in_pos.y + pc.u_shift) / 256.0 - 1.0, 0.0, 1.0);
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v_col = in_col;
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}
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