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499 Commits

Author SHA1 Message Date
Erik Abair 86c85023e6 nv2a: Handle SET_FOG_COORD and SET_WEIGHT* commands 2025-04-16 14:09:13 -07:00
Matt Borgerson 2cc926588b nv2a/gl: Fix COLOR_LE_G8B8 GL surface format type 2025-04-11 04:18:28 -07:00
Erik Abair ebec5e3028 nv2a: Fix assert when setting fog gen mode to fog_x 2025-04-08 16:24:50 -07:00
Erik Abair 672e9cd553 nv2a: Handle SET_SPECULAR_ENABLE 2025-03-28 02:18:42 -07:00
Matt Borgerson 2d73e8aafe nv2a: Use root-relative paths to reference parent dir headers 2025-03-27 23:33:40 -07:00
Matt Borgerson 0e18d11d90 nv2a: Rename methods.h -> methods.h.inc 2025-03-27 23:33:40 -07:00
Matt Borgerson a830cc4526 xbox: Disable clang-format for deliberately aligned reg defs 2025-03-27 23:33:40 -07:00
Matt Borgerson 1893b56c38 nv2a/vk: Fix vertex ram buffer dirty bit check 2025-03-19 02:25:33 -07:00
Matt Borgerson b929d4eced nv2a: Drop surface compat clip constraint 2025-03-17 14:48:47 -07:00
Matt Borgerson c3a8b9569f nv2a: Simplify surface clip to scissor size calculation 2025-03-17 14:48:47 -07:00
Logan Stromberg 860bccb722
nv2a: Fix surface clip to scissor origin 2025-03-17 14:32:40 -07:00
coldhex 02659dd3cc nv2a: Fix cubemap fourth texture coordinate component handling 
Xbox hardware ignores fourth texture coordinate component for cubemaps.
 2025-03-17 11:37:41 -07:00
wilkovatch a00820746f
nv2a: Handle texture dimensions not divisible by 4 in S3TC decoder 2025-03-14 18:44:25 -07:00
Matt Borgerson a143f66ce4 nv2a/psh: Handle 3D textures in PROJECT2D mode 2025-03-10 16:13:09 -07:00
Matt Borgerson 6e3dfb36d8 nv2a/vk: Don't set compressed, swizzled when attribute is uniform 2025-03-10 14:23:43 -07:00
Matt Borgerson 4665515d80 nv2a: Group attributes in pgraph_get_glsl_vtx_header 2025-03-10 12:30:16 -07:00
coldhex 3eb22b6b81 nv2a: Explicit float representation for RCC and vertex shader W range 2025-03-08 14:54:18 -07:00
coldhex 63cb75ce84 nv2a: Fix -0.0 clamping of RCC instruction and vertex shader W-output 
Xbox rounds -0.0 to the negative range and 0.0 to the positive range. This
commit also restores RCC instruction clamping to be done on the output of
reciprocal calculation (which current Xemu release does) with fix for the
input=Infinity case.
 2025-03-08 14:54:18 -07:00
coldhex 8dc6c90e11 nv2a/vk: Drop unnecessary dirty check for NV_PGRAPH_ZCOMPRESSOCCLUDE 
This was used to enable/disable Vulkan depth clamping, but that was
removed in previous commit.
 2025-03-08 14:54:18 -07:00
coldhex 854a001063 nv2a: Fix zero-vector input in fixed function vertex shader 
If tPosition is a zero-vector, then invViewport matrix had no effect.
Bounding w-coordinate away from zero and infinity must be done before
applying invViewport (which is needed for OpenGL/Vulkan) to emulate
Xbox hardware behaviour properly.
 2025-03-08 14:54:18 -07:00
coldhex 798ad30819 nv2a: Perspective-correct interpolation for w-buffering 
z_perspective is true implies w-buffering and then the w-coordinate stored
in the depth buffer should also be interpolated in a perspective-correct
way. We do this by calculating w and setting gl_FragDepth in the fragment
shader.

Since enabling polygon offset and setting values using glPolygonOffset
won't have any effect when manually setting gl_FragDepth for w-buffering,
we introduce the depthOffset variable to obtain similar behaviour (but the
glPolygonOffset factor-argument is currently not emulated.) (Note that
glPolygonOffset is OpenGL implementation-dependent and it might be good to
use depthOffset for z-buffering as well, but this is not done here and we
still use OpenGL/Vulkan zbias functionality.)

This also implements depth clipping and clamping in the fragment shader.
If triangles are clipped, the shadows of the small rocks in Halo 2 Beaver
Creek map can have flickering horizontal lines. The shadows are drawn on
the ground in another pass with the same models as for the ground, but for
some reason with depth clamping enabled. The flickering happens if Xemu
clips the ground triangles, but the exact same shadow triangles are depth
clamped, so there are small differences in the coordinates. The shadows
are drawn with depth function GL_EQUAL so there is no tolerance for any
differences. Clipping in the fragment shader solves the problem because
the ground and shadow triangles remain exactly the same regardless of
depth clipping/clamping. For some performance gain, it might be a good
idea to cull triangles by depth in the geometry shader, but this is not
implemented here.

In the programmable vertex shader we always multiply position output by w
because this improves numerical stability in subsequent floating point
computations by modern GPUs. This usually means that the perspective
divide done by the vertex program gets undone.

The magic bounding constants 5.42101e-020 and 1.884467e+019 are replaced
by 5.421011e-20 and 1.8446744e19, i.e. more decimals added. This makes the
32-bit floating point numbers represent exactly 2^(-64) and 2^64 (raw bits
0x1f800000 and 0x5f800000) which seem more likely the correct values
although testing with hardware was not done to this precision.

Testing indicates that the same RCC instruction magic constants are also
applied to both fixed function and programmable vertex shader w-coordinate
output. This bounding replaces the special test for w==0.0 and abs(w)==inf
which used to set vtx_inv_w=1.0 (which did not match Xbox hardware
behaviour.)
 2025-03-08 14:54:18 -07:00
Erik Abair f701573d44 nv2a: Use rounded values for alpha testing 2025-03-05 17:12:14 -07:00
Matt Borgerson 7cb7bb68a9 nv2a: Multiversion [un]swizzle to optimize for common bpp 2025-01-26 18:47:46 -07:00
Matt Borgerson eae328dc19 nv2a: Move [un]swizzle_rect to swizzle.h 2025-01-26 18:47:46 -07:00
Matt Borgerson bb5ee6865b nv2a: Drop osdep.h, add stdbool.h to swizzle.c 2025-01-26 18:47:46 -07:00
NZJenkins ae4b5c0695
nv2a: Speed up software swizzling 2025-01-26 14:00:35 -07:00
Matt Borgerson 7eba0d3124 nv2a/gl: Update copyright on recently modified files 2025-01-07 17:37:06 -07:00
Matt Borgerson 510c280b05 nv2a/gl: Unify ShaderBinding and ShaderLruNode 2025-01-07 17:35:06 -07:00
Matt Borgerson 6c389194b6 nv2a/psh: Remove unused arguments in string format 2025-01-07 00:52:51 -07:00
Matt Borgerson d76898f63b nv2a: Fix variable shadowing complaints 2025-01-07 00:52:51 -07:00
Matt Borgerson 57c6d82fa3 nv2a/vk: Simplify debug indent loop to a variable field width format 2025-01-07 00:52:51 -07:00
Matt Borgerson 6ac52147a4 nv2a/psh: Remove function scope variable i, which was being shadowed 2025-01-07 00:52:51 -07:00
Matt Borgerson 3070d6422c mstring: Remove mstring_append_{int,char} 2025-01-07 00:52:51 -07:00
Matt Borgerson 0e50741c28 ui,xbox: Copyright updates on changed files 2025-01-06 23:06:21 -07:00
Matt Borgerson 75ce25c9b5 nv2a: Define DEBUG_NV2A_*=0 ifndef 2025-01-06 23:05:53 -07:00
Matt Borgerson 9560677f0a nv2a: Include hw/pci/pci_device.h header 2025-01-06 23:05:53 -07:00
Matt Borgerson 9327159f7c nv2a: Use Resettable interface 2025-01-06 23:05:53 -07:00
Matt Borgerson 3106ea97e5 mcpx: Use new bql_[un]lock functions 2025-01-06 23:05:53 -07:00
Matt Borgerson 5cb65d1791 nv2a: Migrate nv2a_get_offsets to new _get_params model 2025-01-06 23:05:53 -07:00
Matt Borgerson 824af3978f meson: Migrate nv2a_vsh_cpu submodule to a subproject 2025-01-02 19:07:25 -07:00
Matt Borgerson 8f478e017a nv2a/psh: Handle 3D textures in BUMPENVMAP[_LUM] modes 2024-12-31 03:17:52 -07:00
Matt Borgerson b6d6a4709d nv2a/gl: Use snake case for line width ranges 2024-12-31 01:37:05 -07:00
Matt Borgerson e67f19d03b nv2a/vk,gl: Fix a couple 64b shift/printing bugs 2024-12-31 01:37:05 -07:00
Matt Borgerson ae3fe91223 nv2a/gl: Rebase line width feature 2024-12-31 01:37:05 -07:00
Matt Borgerson fb7feb7b1f nv2a/vk: Fix missing display surface addr in debug marker 2024-12-31 01:37:05 -07:00
Matt Borgerson 4a09eeb121 nv2a/vk: Use unsigned types for clear scissor calculation for now 2024-12-31 01:37:05 -07:00
Matt Borgerson 1e5cae068a nv2a/vk: Drop unused vertex_buffer_inline field 2024-12-31 01:37:05 -07:00
Matt Borgerson 477d5489ac nv2a/vk: Copy remapped vert data after pre-draw 2024-12-31 01:37:05 -07:00
Matt Borgerson 28c9f5f6ef nv2a/vk: Load 16b float depth textures as unorm to match surface w/a 2024-12-31 01:37:05 -07:00
Matt Borgerson c098b82108 nv2a/vk: VK_CHECK call to vkBindImageMemory 2024-12-31 01:37:05 -07:00