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Saturn: Further optimise T&L

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UnknownShadow200 2025-04-07 20:39:44 +10:00
parent dc108719e9
commit 16eb611825
1 changed files with 28 additions and 31 deletions
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59
src/Graphics_Saturn.c
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@ -518,7 +518,7 @@ static void DrawColouredQuads2D(int verticesCount, int startVertex) {
static void DrawTexturedQuads2D(int verticesCount, int startVertex) {
uint16_t char_size = cur_char_size;
uint16_t char_base = cur_char_base;
uint16_t gour_base = ((vdp1_vram_t)gourad_base >> 3);
uint16_t gour_base = ((vdp1_vram_t)gourad_base >> 3);
struct SATVertexTextured* v = (struct SATVertexTextured*)gfx_vertices + startVertex;
for (int i = 0; i < verticesCount; i += 4, v += 4)
@ -540,10 +540,12 @@ static void DrawTexturedQuads2D(int verticesCount, int startVertex) {
}
static int TransformColoured(struct SATVertexColoured* a, IVec3* dst) {
int aveZ = 0;
for (int i = 0; i < 4; i++, a++, dst++)
{
int w = TransformVector(a, &mvp_.w);
if (w <= 0) return 1;
if (w <= 0) return -1;
int x = TransformVector(a, &mvp_.x);
cpu_divu_32_32_set(x * (SCREEN_WIDTH/2), w);
@ -552,16 +554,16 @@ static int TransformColoured(struct SATVertexColoured* a, IVec3* dst) {
dst->x = cpu_divu_quotient_get();
cpu_divu_32_32_set(y * -(SCREEN_HEIGHT/2), w);
int z = TransformVector(a, &mvp_.z);
if (dst->x < -2048 || dst->x > 2048) return -1;
int z = w >> 6;
if (z < 0 || z > 50000) return -1;
aveZ += z;
dst->y = cpu_divu_quotient_get();
cpu_divu_32_32_set(z * 512, w);
if (dst->x < -2048 || dst->x > 2048 || dst->y < -2048 || dst->y > 2048) return 1;
dst->z = cpu_divu_quotient_get();
if (dst->z < 0 || dst->z > 512) return 1;
if (dst->y < -2048 || dst->y > 2048) return -1;
}
return 0;
return aveZ >> 2;
}
static void DrawColouredQuads3D(int verticesCount, int startVertex) {
@ -570,10 +572,8 @@ static void DrawColouredQuads3D(int verticesCount, int startVertex) {
for (int i = 0; i < verticesCount; i += 4, v += 4)
{
IVec3 coords[4];
int clipped = TransformColoured(v, coords);
if (clipped) continue;
int z = (coords[0].z + coords[1].z + coords[2].z + coords[3].z) >> 2;
int z = TransformColoured(v, coords);
if (z < 0) continue;
if (cmds_cur >= &cmds.extra) return;
vdp1_cmdt_t* cmd = cmds_cur++;
@ -591,10 +591,12 @@ static void DrawColouredQuads3D(int verticesCount, int startVertex) {
}
static int TransformTextured(struct SATVertexTextured* a, IVec3* dst) {
int aveZ = 0;
for (int i = 0; i < 4; i++, a++, dst++)
{
int w = TransformVector(a, &mvp_.w);
if (w <= 0) return 1;
if (w <= 0) return -1;
int x = TransformVector(a, &mvp_.x);
cpu_divu_32_32_set(x * (SCREEN_WIDTH/2), w);
@ -603,16 +605,16 @@ static int TransformTextured(struct SATVertexTextured* a, IVec3* dst) {
dst->x = cpu_divu_quotient_get();
cpu_divu_32_32_set(y * -(SCREEN_HEIGHT/2), w);
int z = TransformVector(a, &mvp_.z);
if (dst->x < -2048 || dst->x > 2048) return -1;
int z = w >> 6;
if (z < 0 || z > 50000) return -1;
aveZ += z;
dst->y = cpu_divu_quotient_get();
cpu_divu_32_32_set(z * 512, w);
if (dst->x < -2048 || dst->x > 2048 || dst->y < -2048 || dst->y > 2048) return 1;
dst->z = cpu_divu_quotient_get();
if (dst->z < 0 || dst->z > 512) return 1;
if (dst->y < -2048 || dst->y > 2048) return -1;
}
return 0;
return aveZ >> 2;
}
@ -625,10 +627,8 @@ static void DrawTexturedQuads3D(int verticesCount, int startVertex) {
for (int i = 0; i < verticesCount; i += 4, v += 4)
{
IVec3 coords[4];
int clipped = TransformTextured(v, coords);
if (clipped) continue;
int z = (coords[0].z + coords[1].z + coords[2].z + coords[3].z) >> 2;
int z = TransformTextured(v, coords);
if (z < 0) continue;
if (cmds_cur >= &cmds.extra) return;
vdp1_cmdt_t* cmd = cmds_cur++;
@ -723,10 +723,7 @@ void Gfx_EndFrame(void) {
int poly_cmds = (int)(cmds_cur - cmds.list);
int cmds_count = HDR_CMDS + poly_cmds + 1; // +1 for end command
vdp1_cmdt_list_t cmdt_list;
cmdt_list.cmdts = cmds.hdrs;
cmdt_list.count = cmds_count;
vdp1_sync_cmdt_list_put(&cmdt_list, 0);
vdp1_sync_cmdt_put(cmds.hdrs, cmds_count, 0);
vdp1_sync_render();
vdp1_sync();