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Test mipmap handling with sprites #193

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Nov 15, 2017
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Test mipmap handling with sprites #193

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2 changes: 1 addition & 1 deletion tests/gpu/textures/Makefile
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
TARGETS = rotate
TARGETS = mipmap rotate
EXTRA_OBJS = ../../dmac/dmac-imports.o

COMMON_DIR = ../../../common
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322 changes: 322 additions & 0 deletions tests/gpu/textures/mipmap.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1,322 @@
#include <common.h>
#include <malloc.h>
#include <pspdisplay.h>
#include <pspgu.h>
#include <pspkernel.h>

extern "C" int sceDmacMemcpy(void *dest, const void *source, unsigned int size);
extern "C" void sendCommandi(int cmd, int argument);

extern int HAS_DISPLAY;

// Test reversed and equal mip level behavior.
const bool TEST_UNEVEN_MIPS = false;
// Test linear behavior, or show rounding?
const bool TEST_LINEAR_MIPS = true;
// Through mode or transform?
const bool TEST_TRANSFORM = false;

u8 *fbp0 = 0;
u8 *dbp0 = fbp0 + 512 * 272 * sizeof(u32);

static u32 copybuf[512 * 272];
u32 *drawbuf;

unsigned int __attribute__((aligned(16))) list[262144];

enum {
IMG_HALVES,
IMG_EQUAL,
IMG_REVERSE,
};

u32 *imageData[3] = {};
u32 imageColors[] = {
0xFF000000,
0xFF101010,
0xFF202020,
0xFF303030,
0xFF404040,
0xFF505050,
0xFF606060,
0xFF707070,
};

typedef struct {
u16 u, v;
s16 x, y, z;
} Vertex;

enum {
VERTS_EXACT,
VERTS_MAGNIFY,
VERTS_2X,
VERTS_4X_W,
VERTS_4X_H,
VERTS_64X,
VERTS_256X,
};
inline s16 norm16x(int x) { return x * 65536 / 480 - 32768; }
inline s16 norm16y(int x) { return 32767 - x * 65536 / 272; }

Vertex verticesThrough[][2] = {
{ {0, 0, 0, 0, 0}, {2, 2, 2, 2, 0} },
{ {0, 0, 0, 0, 0}, {2, 2, 8, 8, 0} },
{ {0, 0, 0, 0, 0}, {4, 4, 2, 2, 0} },
{ {0, 0, 0, 0, 0}, {8, 1, 2, 2, 0} },
{ {0, 0, 0, 0, 0}, {1, 8, 2, 2, 0} },
{ {0, 0, 0, 0, 0}, {64, 64, 1, 1, 0} },
{ {0, 0, 0, 0, 0}, {256, 256, 1, 1, 0} },
};
Vertex verticesTransform[][2] = {
{ {0, 0, norm16x(0), norm16y(0), 65500}, {256, 256, norm16x(2), norm16y(2), 65535} },
{ {0, 0, norm16x(0), norm16y(0), 65500}, {256, 256, norm16x(8), norm16y(8), 65535} },
{ {0, 0, norm16x(0), norm16y(0), 65500}, {512, 512, norm16x(2), norm16y(2), 65535} },
{ {0, 0, norm16x(0), norm16y(0), 65500}, {1024, 128, norm16x(2), norm16y(2), 65535} },
{ {0, 0, norm16x(0), norm16y(0), 65500}, {128, 1024, norm16x(2), norm16y(2), 65535} },
{ {0, 0, norm16x(0), norm16y(0), 65500}, {8192, 8192, norm16x(1), norm16y(1), 65535} },
{ {0, 0, norm16x(0), norm16y(0), 65500}, {32768, 32768, norm16x(1), norm16y(1), 65535} },
};

void displayBuffer(const char *reason) {
sceKernelDcacheWritebackInvalidateAll();
sceDmacMemcpy(copybuf, drawbuf, sizeof(copybuf));
sceKernelDcacheWritebackInvalidateAll();
const u32 *buf = copybuf;
int c = buf[0] & 0x00FFFFFF;

checkpoint("%s: %06x", reason, c);

// Reset.
memset(copybuf, 0, sizeof(copybuf));
sceKernelDcacheWritebackInvalidateAll();
sceDmacMemcpy(drawbuf, copybuf, sizeof(copybuf));
sceKernelDcacheWritebackInvalidateAll();
}

u32 *getTexturePtr(int img, int l) {
int p = 0;
int w;
if (img == IMG_HALVES) {
w = 256;
} else if (img == IMG_EQUAL) {
w = 16;
} else if (img == IMG_REVERSE) {
w = 4;
}

while (l-- > 0) {
p += w * w;
if ((p % 4) != 0) {
p += 4 - (p % 4);
}

if (img == IMG_HALVES) {
w >>= 1;
} else if (img == IMG_EQUAL) {
w = 16;
} else if (img == IMG_REVERSE) {
w <<= 1;
}
}

return imageData[img] + p;
}

void drawTexFlush(int img, unsigned int mode, const void *verts, u8 bias) {
sceGuStart(GU_DIRECT, list);

sceGuEnable(GU_TEXTURE_2D);
sceGuTexSync();
sceGuTexFlush();
sendCommandi(200, (bias << 16) | mode);
sceGuTexMode(GU_PSM_8888, 7, 0, GU_FALSE);
sceGuTexWrap(GU_CLAMP, GU_CLAMP);
sceGuTexFunc(GU_TFX_DECAL, GU_TCC_RGB);
sceGuTexSlope(2.0f);
for (int l = 0; l < 8; ++l) {
int w;
if (img == IMG_HALVES) {
w = 256 >> l;
} else if (img == IMG_EQUAL) {
w = 16;
} else if (img == IMG_REVERSE) {
w = 4 << l;
}

sceGuTexImage(l, w, w, w < 4 ? 4 : w, getTexturePtr(img, l));
}

if (TEST_TRANSFORM) {
sceGuDrawArray(GU_SPRITES, GU_TEXTURE_16BIT | GU_VERTEX_16BIT | GU_TRANSFORM_3D, 2, NULL, verts);
} else {
sceGuDrawArray(GU_SPRITES, GU_TEXTURE_16BIT | GU_VERTEX_16BIT | GU_TRANSFORM_2D, 2, NULL, verts);
}

sceGuFinish();
sceGuSync(0, 0);
}

void init() {
void *fbp0 = 0;

drawbuf = (u32 *)sceGeEdramGetAddr();

sceGuInit();
sceGuStart(GU_DIRECT, list);
sceGuDrawBuffer(GU_PSM_8888, fbp0, 512);
sceGuDispBuffer(480, 272, fbp0, 512);
sceGuDepthBuffer(dbp0, 512);
sceGuOffset(2048 - (480 / 2), 2048 - (272 / 2));
sceGuViewport(2048, 2048, 480, 272);
sceGuDepthRange(65535, 65500);
sceGuDepthMask(0);
sceGuScissor(0, 0, 480, 272);
sceGuEnable(GU_SCISSOR_TEST);
sceGuFrontFace(GU_CW);
sceGuShadeModel(GU_SMOOTH);

ScePspFMatrix4 ones = {
{1, 0, 0, 0},
{0, 1, 0, 0},
{0, 0, 1, 0},
{0, 0, 0, 1},
};

sceGuSetMatrix(GU_MODEL, &ones);
sceGuSetMatrix(GU_VIEW, &ones);
sceGuSetMatrix(GU_PROJECTION, &ones);

sceGuFinish();
sceGuSync(0, 0);

sceDisplayWaitVblankStart();
sceGuDisplay(1);

memset(copybuf, 0, sizeof(copybuf));
sceKernelDcacheWritebackInvalidateAll();
sceDmacMemcpy(drawbuf, copybuf, sizeof(copybuf));
sceKernelDcacheWritebackInvalidateAll();

// To avoid text writes.
HAS_DISPLAY = 0;
}

void setupTexture() {
imageData[IMG_HALVES] = (u32 *)memalign(16, 4 * 256 * 344);

int w = 256;
for (int l = 0; l < 8; ++l) {
u32 *p = getTexturePtr(IMG_HALVES, l);
int bufw = w < 4 ? 4 : w;
for (int i = 0; i < bufw * w; ++i) {
p[i] = imageColors[l];
}
w >>= 1;
}

imageData[IMG_EQUAL] = (u32 *)memalign(16, 4 * 16 * 16 * 8);

w = 16;
for (int l = 0; l < 8; ++l) {
u32 *p = getTexturePtr(IMG_EQUAL, l);
int bufw = w < 4 ? 4 : w;
for (int i = 0; i < bufw * w; ++i) {
p[i] = imageColors[l];
}
}

imageData[IMG_REVERSE] = (u32 *)memalign(16, 4 * 512 * 1024);

w = 4;
for (int l = 0; l < 8; ++l) {
u32 *p = getTexturePtr(IMG_REVERSE, l);
int bufw = w < 4 ? 4 : w;
for (int i = 0; i < bufw * w; ++i) {
p[i] = imageColors[l];
}
w <<= 1;
}

sceKernelDcacheWritebackInvalidateAll();
}

void testMipDrawingBox(const char *title, int img, unsigned int mode, int vindex, u8 bias) {
const void *verts = TEST_TRANSFORM ? verticesTransform[vindex] : verticesThrough[vindex];

drawTexFlush(img, mode, verts, bias);
sceDisplayWaitVblankStart();
displayBuffer(title);
}

void testMipDrawing(const char *title, int img, unsigned int mode, u8 bias) {
char full[1024] = {0};
snprintf(full, sizeof(full) - 1, "%s +%02x:", title, bias);

checkpointNext(full);
testMipDrawingBox(" 1:1", img, mode, VERTS_EXACT, bias);
testMipDrawingBox(" Magnify", img, mode, VERTS_MAGNIFY, bias);
testMipDrawingBox(" Minify 2x WH", img, mode, VERTS_2X, bias);
testMipDrawingBox(" Minify 4x W", img, mode, VERTS_4X_W, bias);
testMipDrawingBox(" Minify 4x H", img, mode, VERTS_4X_H, bias);
testMipDrawingBox(" Minify 64x", img, mode, VERTS_64X, bias);
testMipDrawingBox(" Minify 256x", img, mode, VERTS_256X, bias);
}

extern "C" int main(int argc, char *argv[]) {
init();
setupTexture();

sceDisplaySetFrameBuf(sceGeEdramGetAddr(), 512, GU_PSM_8888, PSP_DISPLAY_SETBUF_IMMEDIATE);
sceDisplaySetMode(0, 480, 272);

sceGuStart(GU_DIRECT, list);
if (TEST_LINEAR_MIPS) {
sceGuTexFilter(GU_NEAREST_MIPMAP_LINEAR, GU_NEAREST_MIPMAP_LINEAR);
} else {
sceGuTexFilter(GU_NEAREST_MIPMAP_NEAREST, GU_NEAREST_MIPMAP_NEAREST);
}
sceGuFinish();
sceGuSync(0, 0);

u8 biases[] = {0x00, 0x07, 0x08, 0x10, 0x70, 0x77, 0x78, 0x80, 0x87, 0x88, 0xF0};
for (size_t i = 0; i < ARRAY_SIZE(biases); ++i) {
testMipDrawing("Typical mips (AUTO)", IMG_HALVES, GU_TEXTURE_AUTO, biases[i]);
if (TEST_UNEVEN_MIPS) {
testMipDrawing("Equal mips (AUTO)", IMG_EQUAL, GU_TEXTURE_AUTO, biases[i]);
testMipDrawing("Reversed mips (AUTO)", IMG_REVERSE, GU_TEXTURE_AUTO, biases[i]);
}
}

for (size_t i = 0; i < ARRAY_SIZE(biases); ++i) {
testMipDrawing("Typical mips (CONST)", IMG_HALVES, GU_TEXTURE_CONST, biases[i]);
if (TEST_UNEVEN_MIPS) {
testMipDrawing("Equal mips (CONST)", IMG_EQUAL, GU_TEXTURE_CONST, biases[i]);
testMipDrawing("Reversed mips (CONST)", IMG_REVERSE, GU_TEXTURE_CONST, biases[i]);
}
}

for (size_t i = 0; i < ARRAY_SIZE(biases); ++i) {
testMipDrawing("Typical mips (SLOPE)", IMG_HALVES, GU_TEXTURE_SLOPE, biases[i]);
if (TEST_UNEVEN_MIPS) {
testMipDrawing("Equal mips (SLOPE)", IMG_EQUAL, GU_TEXTURE_SLOPE, biases[i]);
testMipDrawing("Reversed mips (SLOPE)", IMG_REVERSE, GU_TEXTURE_SLOPE, biases[i]);
}
}

for (size_t i = 0; i < ARRAY_SIZE(biases); ++i) {
testMipDrawing("Typical mips (3)", IMG_HALVES, 3, biases[i]);
if (TEST_UNEVEN_MIPS) {
testMipDrawing("Equal mips (3)", IMG_EQUAL, 3, biases[i]);
testMipDrawing("Reversed mips (3)", IMG_REVERSE, 3, biases[i]);
}
}

sceGuTerm();

free(imageData[IMG_HALVES]);
free(imageData[IMG_EQUAL]);
free(imageData[IMG_REVERSE]);

return 0;
}
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