void TransformAndDrawPrim(void *verts, void *inds, int prim, int vertexCount, LinkedShader *program, float *customUV, int forceIndexType)
{
// First, decode the verts and apply morphing
VertexDecoder dec;
dec.SetVertexType(gstate.vertType);
dec.DecodeVerts(decoded, verts, inds, prim, vertexCount);
bool useTexCoord = false;
// Check if anything needs updating
if (gstate.textureChanged)
{
if (gstate.textureMapEnable && !(gstate.clearmode & 1))
{
PSPSetTexture();
useTexCoord = true;
}
}
// Then, transform and draw in one big swoop (urgh!)
// need to move this to the shader.
// We're gonna have to keep software transforming RECTANGLES, unless we use a geom shader which we can't on OpenGL ES 2.0.
// Usually, though, these primitives don't use lighting etc so it's no biggie performance wise, but it would be nice to get rid of
// this code.
// Actually, if we find the camera-relative right and down vectors, it might even be possible to add the extra points in pre-transformed
// space and thus make decent use of hardware transform.
// Actually again, single quads could be drawn more efficiently using GL_TRIANGLE_STRIP, no need to duplicate verts as for
// GL_TRIANGLES. Still need to sw transform to compute the extra two corners though.
// Temporary storage for RECTANGLES emulation
float v2[3] = {0};
float uv2[2] = {0};
int numTrans = 0;
TransformedVertex *trans = &transformed[0];
// TODO: Could use glDrawElements in some cases, see below.
// TODO: Split up into multiple draw calls for Android where you can't guarantee support for more than 0x10000 verts.
int i = 0;
#ifdef ANDROID
if (vertexCount > 0x10000/3)
vertexCount = 0x10000/3;
#endif
for (int i = 0; i < vertexCount; i++)
{
int indexType = (gstate.vertType & GE_VTYPE_IDX_MASK);
if (forceIndexType != -1) {
indexType = forceIndexType;
}
int index;
if (indexType == GE_VTYPE_IDX_8BIT)
{
index = ((u8*)inds)[i];
}
else if (indexType == GE_VTYPE_IDX_16BIT)
{
index = ((u16*)inds)[i];
}
else
{
index = i;
}
float v[3] = {0,0,0};
float c[4] = {1,1,1,1};
float uv[2] = {0,0};
if (gstate.vertType & GE_VTYPE_THROUGH_MASK)
{
// Do not touch the coordinates or the colors. No lighting.
for (int j=0; j<3; j++)
v[j] = decoded[index].pos[j];
// TODO : check if has color
for (int j=0; j<4; j++)
c[j] = decoded[index].color[j];
// TODO : check if has uv
for (int j=0; j<2; j++)
uv[j] = decoded[index].uv[j];
//Rescale UV?
}
else
{
//We do software T&L for now
float out[3], norm[3];
if ((gstate.vertType & GE_VTYPE_WEIGHT_MASK) == GE_VTYPE_WEIGHT_NONE)
{
Vec3ByMatrix43(out, decoded[index].pos, gstate.worldMatrix);
Norm3ByMatrix43(norm, decoded[index].normal, gstate.worldMatrix);
}
else
{
Vec3 psum(0,0,0);
Vec3 nsum(0,0,0);
int nweights = (gstate.vertType & GE_VTYPE_WEIGHT_MASK) >> GE_VTYPE_WEIGHT_SHIFT;
for (int i = 0; i < nweights; i++)
{
Vec3ByMatrix43(out, decoded[index].pos, gstate.boneMatrix+i*12);
Norm3ByMatrix43(norm, decoded[index].normal, gstate.boneMatrix+i*12);
Vec3 tpos(out), tnorm(norm);
psum += tpos*decoded[index].weights[i];
nsum += tnorm*decoded[index].weights[i];
}
nsum.Normalize();
psum.Write(out);
nsum.Write(norm);
}
// Perform lighting here if enabled. don't need to check through, it's checked above.
float dots[4] = {0,0,0,0};
if (program->a_color0 != -1)
{
//c[1] = norm[1];
float litColor[4] = {0,0,0,0};
Light(litColor, decoded[index].color, out, norm, dots);
if (gstate.lightingEnable & 1)
{
memcpy(c, litColor, sizeof(litColor));
}
else
{
// no lighting? copy the color.
for (int j=0; j<4; j++)
c[j] = decoded[index].color[j];
}
}
else
{
// no color in the fragment program???
for (int j=0; j<4; j++)
c[j] = decoded[index].color[j];
}
if (customUV) {
uv[0] = customUV[index * 2 + 0]*gstate.uScale + gstate.uOff;
uv[1] = customUV[index * 2 + 1]*gstate.vScale + gstate.vOff;
} else {
// Perform texture coordinate generation after the transform and lighting - one style of UV depends on lights.
switch (gstate.texmapmode & 0x3)
{
case 0: // UV mapping
// Texture scale/offset is only performed in this mode.
uv[0] = decoded[index].uv[0]*gstate.uScale + gstate.uOff;
uv[1] = decoded[index].uv[1]*gstate.vScale + gstate.vOff;
break;
case 1:
{
// Projection mapping
Vec3 source;
switch ((gstate.texmapmode >> 8) & 0x3)
{
case 0: // Use model space XYZ as source
source = decoded[index].pos;
break;
case 1: // Use unscaled UV as source
source = Vec3(decoded[index].uv[0], decoded[index].uv[1], 0.0f);
break;
case 2: // Use normalized normal as source
source = Vec3(norm).Normalized();
break;
case 3: // Use non-normalized normal as source!
source = Vec3(norm);
break;
}
float uvw[3];
Vec3ByMatrix43(uvw, &source.x, gstate.tgenMatrix);
uv[0] = uvw[0];
uv[1] = uvw[1];
}
break;
case 2:
// Shade mapping
{
int lightsource1 = gstate.texshade & 0x3;
int lightsource2 = (gstate.texshade >> 8) & 0x3;
uv[0] = dots[lightsource1];
uv[1] = dots[lightsource2];
}
break;
case 3:
// Illegal
break;
}
}
// Transform the coord by the view matrix. Should this be done before or after texcoord generation?
Vec3ByMatrix43(v, out, gstate.viewMatrix);
}
// We need to tesselate axis-aligned rectangles, as they're only specified by two coordinates.
if (prim == GE_PRIM_RECTANGLES)
{
if ((i & 1) == 0)
{
// Save this vertex so we can generate when we get the next one. Color is taken from the last vertex.
memcpy(v2, v, sizeof(float)*3);
memcpy(uv2,uv,sizeof(float)*2);
}
else
{
// We have to turn the rectangle into two triangles, so 6 points. Sigh.
// top left
trans->x = v[0]; trans->y = v[1];
trans->z = v[2];
trans->uv[0] = uv[0]; trans->uv[1] = uv[1];
memcpy(trans->color, c, 4*sizeof(float));
trans++;
// top right
trans->x = v2[0]; trans->y = v[1];
trans->z = v[2];
trans->uv[0] = uv2[0]; trans->uv[1] = uv[1];
memcpy(trans->color, c, 4*sizeof(float));
trans++;
// bottom right
trans->x = v2[0]; trans->y = v2[1];
trans->z = v[2];
trans->uv[0] = uv2[0]; trans->uv[1] = uv2[1];
memcpy(trans->color, c, 4*sizeof(float));
trans++;
// bottom left
trans->x = v[0]; trans->y = v2[1];
trans->z = v[2];
trans->uv[0] = uv[0]; trans->uv[1] = uv2[1];
memcpy(trans->color, c, 4*sizeof(float));
trans++;
// top left
trans->x = v[0]; trans->y = v[1];
trans->z = v[2];
trans->uv[0] = uv[0]; trans->uv[1] = uv[1];
memcpy(trans->color, c, 4*sizeof(float));
trans++;
// bottom right
trans->x = v2[0]; trans->y = v2[1];
trans->z = v[2];
trans->uv[0] = uv2[0]; trans->uv[1] = uv2[1];
memcpy(trans->color, c, 4*sizeof(float));
trans++;
numTrans += 6;
}
}
else
{
memcpy(&trans->x, v, 3*sizeof(float));
memcpy(trans->color, c, 4*sizeof(float));
memcpy(trans->uv, uv, 2*sizeof(float));
trans++;
numTrans++;
}
}
glEnableVertexAttribArray(program->a_position);
if (useTexCoord && program->a_texcoord != -1) glEnableVertexAttribArray(program->a_texcoord);
if (program->a_color0 != -1) glEnableVertexAttribArray(program->a_color0);
const int vertexSize = sizeof(*trans);
glVertexAttribPointer(program->a_position, 3, GL_FLOAT, GL_FALSE, vertexSize, transformed);
if (useTexCoord && program->a_texcoord != -1) glVertexAttribPointer(program->a_texcoord, 2, GL_FLOAT, GL_FALSE, vertexSize, ((uint8_t*)transformed) + 3 * 4);
if (program->a_color0 != -1) glVertexAttribPointer(program->a_color0, 4, GL_FLOAT, GL_FALSE, vertexSize, ((uint8_t*)transformed) + 5 * 4);
// NOTICE_LOG(G3D,"DrawPrimitive: %i", numTrans);
glDrawArrays(glprim[prim], 0, numTrans);
glDisableVertexAttribArray(program->a_position);
if (useTexCoord && program->a_texcoord != -1) glDisableVertexAttribArray(program->a_texcoord);
if (program->a_color0 != -1) glDisableVertexAttribArray(program->a_color0);
/*
if (((gstate.vertType ) & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_8BIT)
{
glDrawElements(glprim, vertexCount, GL_UNSIGNED_BYTE, inds);
}
else if (((gstate.vertType ) & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_16BIT)
{
glDrawElements(glprim, vertexCount, GL_UNSIGNED_SHORT, inds);
}
else
{*/
}
void TransformUnit::SubmitPrimitive(void* vertices, void* indices, u32 prim_type, int vertex_count, u32 vertex_type)
{
// TODO: Cache VertexDecoder objects
VertexDecoder vdecoder;
vdecoder.SetVertexType(vertex_type);
const DecVtxFormat& vtxfmt = vdecoder.GetDecVtxFmt();
static u8 buf[65536 * 48]; // yolo
u16 index_lower_bound = 0;
u16 index_upper_bound = vertex_count - 1;
bool indices_16bit = (vertex_type & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_16BIT;
u8* indices8 = (u8*)indices;
u16* indices16 = (u16*)indices;
if (indices)
GetIndexBounds(indices, vertex_count, vertex_type, &index_lower_bound, &index_upper_bound);
vdecoder.DecodeVerts(buf, vertices, index_lower_bound, index_upper_bound);
VertexReader vreader(buf, vtxfmt, vertex_type);
const int max_vtcs_per_prim = 3;
int vtcs_per_prim = 0;
if (prim_type == GE_PRIM_POINTS) vtcs_per_prim = 1;
else if (prim_type == GE_PRIM_LINES) vtcs_per_prim = 2;
else if (prim_type == GE_PRIM_TRIANGLES) vtcs_per_prim = 3;
else if (prim_type == GE_PRIM_RECTANGLES) vtcs_per_prim = 2;
else {
// TODO: Unsupported
}
if (prim_type == GE_PRIM_POINTS || prim_type == GE_PRIM_LINES || prim_type == GE_PRIM_TRIANGLES || prim_type == GE_PRIM_RECTANGLES) {
for (int vtx = 0; vtx < vertex_count; vtx += vtcs_per_prim) {
VertexData data[max_vtcs_per_prim];
for (int i = 0; i < vtcs_per_prim; ++i) {
if (indices)
vreader.Goto(indices_16bit ? indices16[vtx+i] : indices8[vtx+i]);
else
vreader.Goto(vtx+i);
data[i] = ReadVertex(vreader);
if (outside_range_flag)
break;
}
if (outside_range_flag) {
outside_range_flag = false;
continue;
}
switch (prim_type) {
case GE_PRIM_TRIANGLES:
{
if (!gstate.isCullEnabled() || gstate.isModeClear()) {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else if (!gstate.getCullMode())
Clipper::ProcessTriangle(data[2], data[1], data[0]);
else
Clipper::ProcessTriangle(data[0], data[1], data[2]);
break;
}
case GE_PRIM_RECTANGLES:
Clipper::ProcessQuad(data[0], data[1]);
break;
}
}
} else if (prim_type == GE_PRIM_TRIANGLE_STRIP) {
VertexData data[3];
unsigned int skip_count = 2; // Don't draw a triangle when loading the first two vertices
for (int vtx = 0; vtx < vertex_count; ++vtx) {
if (indices)
vreader.Goto(indices_16bit ? indices16[vtx] : indices8[vtx]);
else
vreader.Goto(vtx);
data[vtx % 3] = ReadVertex(vreader);
if (outside_range_flag) {
// Drop all primitives containing the current vertex
skip_count = 2;
outside_range_flag = false;
continue;
}
if (skip_count) {
--skip_count;
continue;
}
if (!gstate.isCullEnabled() || gstate.isModeClear()) {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else if ((!gstate.getCullMode()) ^ (vtx % 2)) {
// We need to reverse the vertex order for each second primitive,
// but we additionally need to do that for every primitive if CCW cullmode is used.
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
}
}
} else if (prim_type == GE_PRIM_TRIANGLE_FAN) {
VertexData data[3];
unsigned int skip_count = 1; // Don't draw a triangle when loading the first two vertices
if (indices)
vreader.Goto(indices_16bit ? indices16[0] : indices8[0]);
else
vreader.Goto(0);
data[0] = ReadVertex(vreader);
for (int vtx = 1; vtx < vertex_count; ++vtx) {
if (indices)
vreader.Goto(indices_16bit ? indices16[vtx] : indices8[vtx]);
else
vreader.Goto(vtx);
data[2 - (vtx % 2)] = ReadVertex(vreader);
if (outside_range_flag) {
// Drop all primitives containing the current vertex
skip_count = 2;
outside_range_flag = false;
continue;
}
if (skip_count) {
--skip_count;
continue;
}
if (!gstate.isCullEnabled() || gstate.isModeClear()) {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else if ((!gstate.getCullMode()) ^ (vtx % 2)) {
// We need to reverse the vertex order for each second primitive,
// but we additionally need to do that for every primitive if CCW cullmode is used.
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
}
}
}
}
void TransformUnit::SubmitSpline(void* control_points, void* indices, int count_u, int count_v, int type_u, int type_v, GEPatchPrimType prim_type, u32 vertex_type)
{
VertexDecoder vdecoder;
vdecoder.SetVertexType(vertex_type);
const DecVtxFormat& vtxfmt = vdecoder.GetDecVtxFmt();
static u8 buf[65536 * 48]; // yolo
u16 index_lower_bound = 0;
u16 index_upper_bound = count_u * count_v - 1;
bool indices_16bit = (vertex_type & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_16BIT;
u8* indices8 = (u8*)indices;
u16* indices16 = (u16*)indices;
if (indices)
GetIndexBounds(indices, count_u*count_v, vertex_type, &index_lower_bound, &index_upper_bound);
vdecoder.DecodeVerts(buf, control_points, index_lower_bound, index_upper_bound);
VertexReader vreader(buf, vtxfmt, vertex_type);
int num_patches_u = count_u - 3;
int num_patches_v = count_v - 3;
// TODO: Do something less idiotic to manage this buffer
SplinePatch* patches = new SplinePatch[num_patches_u * num_patches_v];
for (int patch_u = 0; patch_u < num_patches_u; ++patch_u) {
for (int patch_v = 0; patch_v < num_patches_v; ++patch_v) {
SplinePatch& patch = patches[patch_u + patch_v * num_patches_u];
for (int point = 0; point < 16; ++point) {
int idx = (patch_u + point%4) + (patch_v + point/4) * count_u;
if (indices)
vreader.Goto(indices_16bit ? indices16[idx] : indices8[idx]);
else
vreader.Goto(idx);
patch.points[point] = ReadVertex(vreader);
}
patch.type = (type_u | (type_v<<2));
if (patch_u != 0) patch.type &= ~START_OPEN_U;
if (patch_v != 0) patch.type &= ~START_OPEN_V;
if (patch_u != num_patches_u-1) patch.type &= ~END_OPEN_U;
if (patch_v != num_patches_v-1) patch.type &= ~END_OPEN_V;
}
}
for (int patch_idx = 0; patch_idx < num_patches_u*num_patches_v; ++patch_idx) {
SplinePatch& patch = patches[patch_idx];
// TODO: Should do actual patch subdivision instead of just drawing the control points!
const int tile_min_u = (patch.type & START_OPEN_U) ? 0 : 1;
const int tile_min_v = (patch.type & START_OPEN_V) ? 0 : 1;
const int tile_max_u = (patch.type & END_OPEN_U) ? 3 : 2;
const int tile_max_v = (patch.type & END_OPEN_V) ? 3 : 2;
for (int tile_u = tile_min_u; tile_u < tile_max_u; ++tile_u) {
for (int tile_v = tile_min_v; tile_v < tile_max_v; ++tile_v) {
int point_index = tile_u + tile_v*4;
VertexData v0 = patch.points[point_index];
VertexData v1 = patch.points[point_index+1];
VertexData v2 = patch.points[point_index+4];
VertexData v3 = patch.points[point_index+5];
// TODO: Backface culling etc
Clipper::ProcessTriangle(v0, v1, v2);
Clipper::ProcessTriangle(v2, v1, v0);
Clipper::ProcessTriangle(v2, v1, v3);
Clipper::ProcessTriangle(v3, v1, v2);
}
}
}
delete[] patches;
}
void TransformUnit::SubmitPrimitive(void* vertices, void* indices, u32 prim_type, int vertex_count, u32 vertex_type, int *bytesRead)
{
// TODO: Cache VertexDecoder objects
VertexDecoder vdecoder;
VertexDecoderOptions options;
memset(&options, 0, sizeof(options));
options.expandAllUVtoFloat = false;
vdecoder.SetVertexType(vertex_type, options);
const DecVtxFormat& vtxfmt = vdecoder.GetDecVtxFmt();
if (bytesRead)
*bytesRead = vertex_count * vdecoder.VertexSize();
// Frame skipping.
if (gstate_c.skipDrawReason & SKIPDRAW_SKIPFRAME) {
return;
}
u16 index_lower_bound = 0;
u16 index_upper_bound = vertex_count - 1;
bool indices_16bit = (vertex_type & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_16BIT;
bool indices_32bit = (vertex_type & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_32BIT;
u8 *indices8 = (u8 *)indices;
u16 *indices16 = (u16 *)indices;
u32 *indices32 = (u32 *)indices;
if (indices)
GetIndexBounds(indices, vertex_count, vertex_type, &index_lower_bound, &index_upper_bound);
vdecoder.DecodeVerts(buf, vertices, index_lower_bound, index_upper_bound);
VertexReader vreader(buf, vtxfmt, vertex_type);
const int max_vtcs_per_prim = 3;
int vtcs_per_prim = 0;
switch (prim_type) {
case GE_PRIM_POINTS: vtcs_per_prim = 1; break;
case GE_PRIM_LINES: vtcs_per_prim = 2; break;
case GE_PRIM_TRIANGLES: vtcs_per_prim = 3; break;
case GE_PRIM_RECTANGLES: vtcs_per_prim = 2; break;
}
VertexData data[max_vtcs_per_prim];
// TODO: Do this in two passes - first process the vertices (before indexing/stripping),
// then resolve the indices. This lets us avoid transforming shared vertices twice.
switch (prim_type) {
case GE_PRIM_POINTS:
case GE_PRIM_LINES:
case GE_PRIM_TRIANGLES:
case GE_PRIM_RECTANGLES:
{
for (int vtx = 0; vtx < vertex_count; vtx += vtcs_per_prim) {
for (int i = 0; i < vtcs_per_prim; ++i) {
if (indices) {
if (indices_32bit) {
vreader.Goto(indices32[vtx + i]);
} else if (indices_16bit) {
vreader.Goto(indices16[vtx + i]);
} else {
vreader.Goto(indices8[vtx + i]);
}
} else {
vreader.Goto(vtx+i);
}
data[i] = ReadVertex(vreader);
if (outside_range_flag)
break;
}
if (outside_range_flag) {
outside_range_flag = false;
continue;
}
switch (prim_type) {
case GE_PRIM_TRIANGLES:
{
if (!gstate.isCullEnabled() || gstate.isModeClear()) {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else if (!gstate.getCullMode())
Clipper::ProcessTriangle(data[2], data[1], data[0]);
else
Clipper::ProcessTriangle(data[0], data[1], data[2]);
break;
}
case GE_PRIM_RECTANGLES:
Clipper::ProcessRect(data[0], data[1]);
break;
case GE_PRIM_LINES:
Clipper::ProcessLine(data[0], data[1]);
break;
case GE_PRIM_POINTS:
Clipper::ProcessPoint(data[0]);
break;
}
}
break;
}
case GE_PRIM_LINE_STRIP:
{
int skip_count = 1; // Don't draw a line when loading the first vertex
for (int vtx = 0; vtx < vertex_count; ++vtx) {
if (indices)
vreader.Goto(indices_16bit ? indices16[vtx] : indices8[vtx]);
else
vreader.Goto(vtx);
data[vtx & 1] = ReadVertex(vreader);
if (outside_range_flag) {
// Drop all primitives containing the current vertex
skip_count = 2;
outside_range_flag = false;
continue;
}
if (skip_count) {
--skip_count;
} else {
Clipper::ProcessLine(data[(vtx & 1) ^ 1], data[vtx & 1]);
}
}
break;
}
case GE_PRIM_TRIANGLE_STRIP:
{
int skip_count = 2; // Don't draw a triangle when loading the first two vertices
for (int vtx = 0; vtx < vertex_count; ++vtx) {
if (indices)
vreader.Goto(indices_16bit ? indices16[vtx] : indices8[vtx]);
else
vreader.Goto(vtx);
data[vtx % 3] = ReadVertex(vreader);
if (outside_range_flag) {
// Drop all primitives containing the current vertex
skip_count = 2;
outside_range_flag = false;
continue;
}
if (skip_count) {
--skip_count;
continue;
}
if (!gstate.isCullEnabled() || gstate.isModeClear()) {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else if ((!gstate.getCullMode()) ^ (vtx % 2)) {
// We need to reverse the vertex order for each second primitive,
// but we additionally need to do that for every primitive if CCW cullmode is used.
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
}
}
break;
}
case GE_PRIM_TRIANGLE_FAN:
{
unsigned int skip_count = 1; // Don't draw a triangle when loading the first two vertices
if (indices)
vreader.Goto(indices_16bit ? indices16[0] : indices8[0]);
else
vreader.Goto(0);
data[0] = ReadVertex(vreader);
for (int vtx = 1; vtx < vertex_count; ++vtx) {
if (indices)
vreader.Goto(indices_16bit ? indices16[vtx] : indices8[vtx]);
else
vreader.Goto(vtx);
data[2 - (vtx % 2)] = ReadVertex(vreader);
if (outside_range_flag) {
// Drop all primitives containing the current vertex
skip_count = 2;
outside_range_flag = false;
continue;
}
if (skip_count) {
--skip_count;
continue;
}
if (!gstate.isCullEnabled() || gstate.isModeClear()) {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else if ((!gstate.getCullMode()) ^ (vtx % 2)) {
// We need to reverse the vertex order for each second primitive,
// but we additionally need to do that for every primitive if CCW cullmode is used.
Clipper::ProcessTriangle(data[2], data[1], data[0]);
} else {
Clipper::ProcessTriangle(data[0], data[1], data[2]);
}
}
break;
}
}
host->GPUNotifyDraw();
}
void TransformUnit::SubmitSpline(void* control_points, void* indices, int count_u, int count_v, int type_u, int type_v, GEPatchPrimType prim_type, u32 vertex_type) {
VertexDecoder vdecoder;
VertexDecoderOptions options;
memset(&options, 0, sizeof(options));
options.expandAllUVtoFloat = false;
vdecoder.SetVertexType(vertex_type, options);
const DecVtxFormat& vtxfmt = vdecoder.GetDecVtxFmt();
static u8 buf[65536 * 48]; // yolo
u16 index_lower_bound = 0;
u16 index_upper_bound = count_u * count_v - 1;
bool indices_16bit = (vertex_type & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_16BIT;
bool indices_32bit = (vertex_type & GE_VTYPE_IDX_MASK) == GE_VTYPE_IDX_32BIT;
u8 *indices8 = (u8 *)indices;
u16 *indices16 = (u16 *)indices;
u32 *indices32 = (u32 *)indices;
if (indices)
GetIndexBounds(indices, count_u*count_v, vertex_type, &index_lower_bound, &index_upper_bound);
vdecoder.DecodeVerts(buf, control_points, index_lower_bound, index_upper_bound);
VertexReader vreader(buf, vtxfmt, vertex_type);
int num_patches_u = count_u - 3;
int num_patches_v = count_v - 3;
if (patchBufferSize_ < num_patches_u * num_patches_v) {
if (patchBuffer_) {
FreeAlignedMemory(patchBuffer_);
}
patchBuffer_ = (SplinePatch *)AllocateAlignedMemory(num_patches_u * num_patches_v, 16);
patchBufferSize_ = num_patches_u * num_patches_v;
}
SplinePatch *patches = patchBuffer_;
for (int patch_u = 0; patch_u < num_patches_u; ++patch_u) {
for (int patch_v = 0; patch_v < num_patches_v; ++patch_v) {
SplinePatch& patch = patches[patch_u + patch_v * num_patches_u];
for (int point = 0; point < 16; ++point) {
int idx = (patch_u + point%4) + (patch_v + point/4) * count_u;
if (indices) {
if (indices_32bit) {
vreader.Goto(indices32[idx]);
} else if (indices_16bit) {
vreader.Goto(indices16[idx]);
} else {
vreader.Goto(indices8[idx]);
}
} else {
vreader.Goto(idx);
}
patch.points[point] = ReadVertex(vreader);
}
patch.type = (type_u | (type_v<<2));
if (patch_u != 0) patch.type &= ~START_OPEN_U;
if (patch_v != 0) patch.type &= ~START_OPEN_V;
if (patch_u != num_patches_u-1) patch.type &= ~END_OPEN_U;
if (patch_v != num_patches_v-1) patch.type &= ~END_OPEN_V;
}
}
for (int patch_idx = 0; patch_idx < num_patches_u*num_patches_v; ++patch_idx) {
SplinePatch& patch = patches[patch_idx];
// TODO: Should do actual patch subdivision instead of just drawing the control points!
const int tile_min_u = (patch.type & START_OPEN_U) ? 0 : 1;
const int tile_min_v = (patch.type & START_OPEN_V) ? 0 : 1;
const int tile_max_u = (patch.type & END_OPEN_U) ? 3 : 2;
const int tile_max_v = (patch.type & END_OPEN_V) ? 3 : 2;
for (int tile_u = tile_min_u; tile_u < tile_max_u; ++tile_u) {
for (int tile_v = tile_min_v; tile_v < tile_max_v; ++tile_v) {
int point_index = tile_u + tile_v*4;
VertexData v0 = patch.points[point_index];
VertexData v1 = patch.points[point_index+1];
VertexData v2 = patch.points[point_index+4];
VertexData v3 = patch.points[point_index+5];
// TODO: Backface culling etc
Clipper::ProcessTriangle(v0, v1, v2);
Clipper::ProcessTriangle(v2, v1, v0);
Clipper::ProcessTriangle(v2, v1, v3);
Clipper::ProcessTriangle(v3, v1, v2);
}
}
}
host->GPUNotifyDraw();
}
// This normalizes a set of vertices in any format to SimpleVertex format, by processing away morphing AND skinning.
// The rest of the transform pipeline like lighting will go as normal, either hardware or software.
// The implementation is initially a bit inefficient but shouldn't be a big deal.
// An intermediate buffer of not-easy-to-predict size is stored at bufPtr.
u32 TransformDrawEngine::NormalizeVertices(u8 *outPtr, u8 *bufPtr, const u8 *inPtr, int lowerBound, int upperBound, u32 vertType) {
// First, decode the vertices into a GPU compatible format. This step can be eliminated but will need a separate
// implementation of the vertex decoder.
VertexDecoder *dec = GetVertexDecoder(vertType);
dec->DecodeVerts(bufPtr, inPtr, lowerBound, upperBound);
// OK, morphing eliminated but bones still remain to be taken care of.
// Let's do a partial software transform where we only do skinning.
VertexReader reader(bufPtr, dec->GetDecVtxFmt(), vertType);
SimpleVertex *sverts = (SimpleVertex *)outPtr;
const u8 defaultColor[4] = {
(u8)gstate.getMaterialAmbientR(),
(u8)gstate.getMaterialAmbientG(),
(u8)gstate.getMaterialAmbientB(),
(u8)gstate.getMaterialAmbientA(),
};
// Let's have two separate loops, one for non skinning and one for skinning.
if ((vertType & GE_VTYPE_WEIGHT_MASK) != GE_VTYPE_WEIGHT_NONE) {
int numBoneWeights = vertTypeGetNumBoneWeights(vertType);
for (int i = lowerBound; i <= upperBound; i++) {
reader.Goto(i);
SimpleVertex &sv = sverts[i];
if (vertType & GE_VTYPE_TC_MASK) {
reader.ReadUV(sv.uv);
}
if (vertType & GE_VTYPE_COL_MASK) {
reader.ReadColor0_8888(sv.color);
} else {
memcpy(sv.color, defaultColor, 4);
}
float nrm[3], pos[3];
float bnrm[3], bpos[3];
if (vertType & GE_VTYPE_NRM_MASK) {
// Normals are generated during tesselation anyway, not sure if any need to supply
reader.ReadNrm(nrm);
} else {
nrm[0] = 0;
nrm[1] = 0;
nrm[2] = 1.0f;
}
reader.ReadPos(pos);
// Apply skinning transform directly
float weights[8];
reader.ReadWeights(weights);
// Skinning
Vec3f psum(0,0,0);
Vec3f nsum(0,0,0);
for (int i = 0; i < numBoneWeights; i++) {
if (weights[i] != 0.0f) {
Vec3ByMatrix43(bpos, pos, gstate.boneMatrix+i*12);
Vec3f tpos(bpos);
psum += tpos * weights[i];
Norm3ByMatrix43(bnrm, nrm, gstate.boneMatrix+i*12);
Vec3f tnorm(bnrm);
nsum += tnorm * weights[i];
}
}
sv.pos = psum;
sv.nrm = nsum;
}
} else {
for (int i = lowerBound; i <= upperBound; i++) {
reader.Goto(i);
SimpleVertex &sv = sverts[i];
if (vertType & GE_VTYPE_TC_MASK) {
reader.ReadUV(sv.uv);
} else {
sv.uv[0] = 0; // This will get filled in during tesselation
sv.uv[1] = 0;
}
if (vertType & GE_VTYPE_COL_MASK) {
reader.ReadColor0_8888(sv.color);
} else {
memcpy(sv.color, defaultColor, 4);
}
if (vertType & GE_VTYPE_NRM_MASK) {
// Normals are generated during tesselation anyway, not sure if any need to supply
reader.ReadNrm((float *)&sv.nrm);
} else {
sv.nrm.x = 0;
sv.nrm.y = 0;
sv.nrm.z = 1.0f;
}
reader.ReadPos((float *)&sv.pos);
}
}
// Okay, there we are! Return the new type (but keep the index bits)
return GE_VTYPE_TC_FLOAT | GE_VTYPE_COL_8888 | GE_VTYPE_NRM_FLOAT | GE_VTYPE_POS_FLOAT | (vertType & GE_VTYPE_IDX_MASK);
}