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PS3: WIP on writing GPU commands directly

This commit is contained in:
UnknownShadow200 2025-09-07 12:15:57 +10:00
parent 8c4d2db9d1
commit f68f7ffaf0
3 changed files with 70 additions and 8 deletions
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11
src/ps3/Graphics_PS3.c
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@ -6,6 +6,7 @@
#include <malloc.h>
#include <rsx/rsx.h>
#include <sysutil/video.h>
#include "rsx_gpu.h"
static gcmContextData* context;
static u32 cur_fb;
@ -335,13 +336,7 @@ static void SetAlphaTest(cc_bool enabled) {
}
static void SetColorWrite(cc_bool r, cc_bool g, cc_bool b, cc_bool a) {
unsigned mask = 0;
if (r) mask |= GCM_COLOR_MASK_R;
if (g) mask |= GCM_COLOR_MASK_G;
if (b) mask |= GCM_COLOR_MASK_B;
if (a) mask |= GCM_COLOR_MASK_A;
rsxSetColorMask(context, mask);
RSX_set_color_write_mask(context, r, g, b, a);
}
void Gfx_DepthOnlyRendering(cc_bool depthOnly) {
@ -487,7 +482,7 @@ void Gfx_SetViewport(int x, int y, int w, int h) {
}
void Gfx_SetScissor(int x, int y, int w, int h) {
rsxSetScissor(context, x, y, w, h);
RSX_set_scissor_rect(context, x, y, w, h);
}

58
src/ps3/rsx_gpu.h Normal file
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@ -0,0 +1,58 @@
/*########################################################################################################################*
*-----------------------------------------------------GPU commands--------------------------------------------------------*
*#########################################################################################################################*/
// NOTE: shared with nv2a (Xbox) GPU
// disables the default increment behaviour when writing multiple registers
// E.g. with RSX_3D_COMMAND(cmd, 4):
// - default: REG+0 = v1, REG+4 = v2, REG+8 = v3, REG+12= v4
// - disable: REG = v1, REG = v2, REG = v3, REG = v4
#define RSX_WRITE_SAME_REGISTER 0x40000000
#define RSX_COMMAND(subchan, cmd, num_params) (((num_params) << 18) | ((subchan) << 13) | (cmd))
#define RSX_3D_COMMAND(cmd, num_params) RSX_COMMAND(0, cmd, num_params)
#include <rsx/nv40.h>
/*########################################################################################################################*
*---------------------------------------------------GPU command buffer----------------------------------------------------*
*#########################################################################################################################*/
static CC_INLINE uint32_t* RSX_reserve(gcmContextData* ctx, int count) {
if (ctx->current + count > ctx->end) {
// TODO handle command buffer overflow properly
Process_Abort("Command buffer overflow");
}
uint32_t* p = ctx->current;
ctx->current += count;
return p;
}
static CC_INLINE uint32_t* RSX_reserve_command(gcmContextData* context, uint32_t cmd, int num_params) {
uint32_t* p = RSX_reserve(context, num_params + 1);
*p++ = RSX_3D_COMMAND(cmd, num_params);
return p;
}
/*########################################################################################################################*
*-----------------------------------------------------Raster control------------------------------------------------------*
*#########################################################################################################################*/
static CC_INLINE void RSX_set_scissor_rect(gcmContextData* ctx, int x, int y, int w, int h) {
// NV40TCL_SCISSOR_HORIZ, then NV40TCL_SCISSOR_VERTI
uint32_t* p = RSX_reserve_command(ctx, NV40TCL_SCISSOR_HORIZ, 2);
*p++ = x | (w << 16);
*p++ = y | (h << 16);
}
static CC_INLINE void RSX_set_color_write_mask(gcmContextData* ctx, int r, int g, int b, int a) {
uint32_t mask = 0;
if (r) mask |= GCM_COLOR_MASK_R;
if (g) mask |= GCM_COLOR_MASK_G;
if (b) mask |= GCM_COLOR_MASK_B;
if (a) mask |= GCM_COLOR_MASK_A;
uint32_t* p = RSX_reserve_command(ctx, NV40TCL_COLOR_MASK, 1);
*p++ = mask;
}

9
src/xbox/nv2a_gpu.h
View File

@ -1,3 +1,8 @@
/*########################################################################################################################*
*-----------------------------------------------------GPU commands--------------------------------------------------------*
*#########################################################################################################################*/
// NOTE: shared with RSX (PS3) GPU
// disables the default increment behaviour when writing multiple registers
// E.g. with NV2A_3D_COMMAND(cmd, 4):
// - default: REG+0 = v1, REG+4 = v2, REG+8 = v3, REG+12= v4
@ -9,6 +14,10 @@
#define _NV_ALPHAKILL_EN (1 << 2)
/*########################################################################################################################*
*-----------------------------------------------------GPU pushbuffer------------------------------------------------------*
*#########################################################################################################################*/
static CC_INLINE uint32_t* NV2A_push1(uint32_t* p, int cmd, uint32_t value) {
*p++ = NV2A_3D_COMMAND(cmd, 1);
*p++ = value;