bool bsm_read_normals(uint8_t *data, size_t n, bsm_header_v1_t *header, bsm_normal_t *normals) {
size_t bytes = bsm_normals_bytes(header);
size_t offs = header->offs_normals;
if (offs + bytes > n) return false;
reordercpy32(normals, data + offs, bytes);
for (int i = 0; i < header->num_verts; i++) {
normalize_normal(&normals[i]);
}
return true;
}
hwgm_vertices_t* read_vertices(context_t* context, const reader_mesh_t* mesh)
{
hwgm_vertices_t* out = NULL;
hws16* vertices = NULL;
hwu16* texcoords = NULL;
hws16* normals = NULL;
hwu32 offset = 0;
hwu32 i;
hwsint index;
out = (hwgm_vertices_t*)(context->vertices + context->vertices_pos);
hwgm_vertices_initialize(out);
/* 頂点格納位置を計算、格納
* 頂点情報は必須 */
offset = context->vertices_pos + sizeof(hwgm_vertices_t);
vertices = (hws16*)((hwu8*)context->vertices + offset);
for(i = 0; i < mesh->vertex_count; ++i) {
const hwm_vector3_t* v = NULL;
hws16 x = 0;
hws16 y = 0;
hws16 z = 0;
v = mesh->vertices + i;
x = normalize_position(v->x, context);
y = normalize_position(v->y, context);
z = normalize_position(v->z, context);
index = i * 3;
vertices[index + 0] = x;
vertices[index + 1] = y;
vertices[index + 2] = z;
}
offset += sizeof(hws16) * 3 * mesh->vertex_count;
/* テクスチャ座標格納位置を計算、格納 */
if(mesh->texcoords != NULL && mesh->texcoord_layer_count > 0) {
texcoords = (hwu16*)((hwu8*)context->vertices + offset);
for(i = 0; i < mesh->vertex_count; ++i) {
const hwm_vector3_t* texcoord = NULL;
hwu16 u = 0;
hwu16 v = 0;
texcoord = &mesh->texcoords[0][i];
u = normalize_texcoord(texcoord->x);
v = normalize_texcoord(texcoord->y);
index = i * 2;
texcoords[index + 0] = u;
texcoords[index + 1] = v;
}
offset += sizeof(hwu16) * 2 * mesh->vertex_count;
}
/* 法線位置格納位置を計算、格納 */
if(mesh->normals != NULL) {
normals = (hws16*)((hwu8*)context->vertices_pos + offset);
for(i = 0; i < mesh->vertex_count; ++i) {
const hwm_vector3_t* normal = NULL;
hws16 x = 0;
hws16 y = 0;
hws16 z = 0;
normal = mesh->normals + i;
x = normalize_normal(normal->x);
y = normalize_normal(normal->y);
z = normalize_normal(normal->z);
index = i * 3;
normals[index + 0] = x;
normals[index + 1] = y;
normals[index + 2] = z;
}
offset += sizeof(hws16) * 3 * mesh->vertex_count;
}
out->vertices = vertices;
out->texcoords = texcoords;
out->normals = normals;
context->vertices_pos = offset;
return out;
}
/* Tesselates a high order rectangular patch into single triangles using gl evaluators
*
* The problem is that OpenGL does not offer a direct way to return the tesselated primitives,
* and they can't be sent off for rendering directly either. Tesselating is slow, so we want
* to cache the patches in a vertex buffer. But more importantly, gl can't bind generated
* attributes to numbered shader attributes, so we have to store them and rebind them as needed
* in drawprim.
*
* To read back, the opengl feedback mode is used. This creates a problem because we want
* untransformed, unlit vertices, but feedback runs everything through transform and lighting.
* Thus disable lighting and set identity matrices to get unmodified colors and positions.
* To overcome clipping find the biggest x, y and z values of the vertices in the patch and scale
* them to [-1.0;+1.0] and set the viewport up to scale them back.
*
* Normals are more tricky: Draw white vertices with 3 directional lights, and calculate the
* resulting colors back to the normals.
*
* NOTE: This function activates a context for blitting, modifies matrices & viewport, but
* does not restore it because normally a draw follows immediately afterwards. The caller is
* responsible of taking care that either the gl states are restored, or the context activated
* for drawing to reset the lastWasBlit flag.
*/
HRESULT tesselate_rectpatch(IWineD3DDeviceImpl *This,
struct WineD3DRectPatch *patch) {
unsigned int i, j, num_quads, out_vertex_size, buffer_size, d3d_out_vertex_size;
float max_x = 0.0f, max_y = 0.0f, max_z = 0.0f, neg_z = 0.0f;
struct wined3d_stream_info stream_info;
struct wined3d_stream_info_element *e;
struct wined3d_context *context;
const BYTE *data;
const WINED3DRECTPATCH_INFO *info = &patch->RectPatchInfo;
DWORD vtxStride;
GLenum feedback_type;
GLfloat *feedbuffer;
/* Simply activate the context for blitting. This disables all the things we don't want and
* takes care of dirtifying. Dirtifying is preferred over pushing / popping, since drawing the
* patch (as opposed to normal draws) will most likely need different changes anyway. */
context = context_acquire(This, NULL, CTXUSAGE_BLIT);
/* First, locate the position data. This is provided in a vertex buffer in the stateblock.
* Beware of vbos
*/
device_stream_info_from_declaration(This, FALSE, &stream_info, NULL);
e = &stream_info.elements[WINED3D_FFP_POSITION];
if (e->buffer_object)
{
struct wined3d_buffer *vb;
vb = (struct wined3d_buffer *)This->stateBlock->streamSource[e->stream_idx];
e->data = (BYTE *)((unsigned long)e->data + (unsigned long)buffer_get_sysmem(vb));
}
vtxStride = e->stride;
data = e->data +
vtxStride * info->Stride * info->StartVertexOffsetHeight +
vtxStride * info->StartVertexOffsetWidth;
/* Not entirely sure about what happens with transformed vertices */
if (stream_info.position_transformed) FIXME("Transformed position in rectpatch generation\n");
if(vtxStride % sizeof(GLfloat)) {
/* glMap2f reads vertex sizes in GLfloats, the d3d stride is in bytes.
* I don't see how the stride could not be a multiple of 4, but make sure
* to check it
*/
ERR("Vertex stride is not a multiple of sizeof(GLfloat)\n");
}
if(info->Basis != WINED3DBASIS_BEZIER) {
FIXME("Basis is %s, how to handle this?\n", debug_d3dbasis(info->Basis));
}
if(info->Degree != WINED3DDEGREE_CUBIC) {
FIXME("Degree is %s, how to handle this?\n", debug_d3ddegree(info->Degree));
}
/* First, get the boundary cube of the input data */
for(j = 0; j < info->Height; j++) {
for(i = 0; i < info->Width; i++) {
const float *v = (const float *)(data + vtxStride * i + vtxStride * info->Stride * j);
if(fabs(v[0]) > max_x) max_x = fabs(v[0]);
if(fabs(v[1]) > max_y) max_y = fabs(v[1]);
if(fabs(v[2]) > max_z) max_z = fabs(v[2]);
if(v[2] < neg_z) neg_z = v[2];
}
}
/* This needs some improvements in the vertex decl code */
FIXME("Cannot find data to generate. Only generating position and normals\n");
patch->has_normals = TRUE;
patch->has_texcoords = FALSE;
ENTER_GL();
glMatrixMode(GL_PROJECTION);
checkGLcall("glMatrixMode(GL_PROJECTION)");
glLoadIdentity();
checkGLcall("glLoadIndentity()");
glScalef(1.0f / (max_x), 1.0f / (max_y), max_z == 0.0f ? 1.0f : 1.0f / (2.0f * max_z));
glTranslatef(0.0f, 0.0f, 0.5f);
checkGLcall("glScalef");
glViewport(-max_x, -max_y, 2 * (max_x), 2 * (max_y));
checkGLcall("glViewport");
/* Some states to take care of. If we're in wireframe opengl will produce lines, and confuse
* our feedback buffer parser
*/
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
checkGLcall("glPolygonMode(GL_FRONT_AND_BACK, GL_FILL)");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_FILLMODE));
if(patch->has_normals) {
static const GLfloat black[] = {0.0f, 0.0f, 0.0f, 0.0f};
static const GLfloat red[] = {1.0f, 0.0f, 0.0f, 0.0f};
static const GLfloat green[] = {0.0f, 1.0f, 0.0f, 0.0f};
static const GLfloat blue[] = {0.0f, 0.0f, 1.0f, 0.0f};
static const GLfloat white[] = {1.0f, 1.0f, 1.0f, 1.0f};
glEnable(GL_LIGHTING);
checkGLcall("glEnable(GL_LIGHTING)");
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, black);
checkGLcall("glLightModel for MODEL_AMBIENT");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_AMBIENT));
for (i = 3; i < context->gl_info->limits.lights; ++i)
{
glDisable(GL_LIGHT0 + i);
checkGLcall("glDisable(GL_LIGHT0 + i)");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(i));
}
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(0));
glLightfv(GL_LIGHT0, GL_DIFFUSE, red);
glLightfv(GL_LIGHT0, GL_SPECULAR, black);
glLightfv(GL_LIGHT0, GL_AMBIENT, black);
glLightfv(GL_LIGHT0, GL_POSITION, red);
glEnable(GL_LIGHT0);
checkGLcall("Setting up light 1");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(1));
glLightfv(GL_LIGHT1, GL_DIFFUSE, green);
glLightfv(GL_LIGHT1, GL_SPECULAR, black);
glLightfv(GL_LIGHT1, GL_AMBIENT, black);
glLightfv(GL_LIGHT1, GL_POSITION, green);
glEnable(GL_LIGHT1);
checkGLcall("Setting up light 2");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_ACTIVELIGHT(2));
glLightfv(GL_LIGHT2, GL_DIFFUSE, blue);
glLightfv(GL_LIGHT2, GL_SPECULAR, black);
glLightfv(GL_LIGHT2, GL_AMBIENT, black);
glLightfv(GL_LIGHT2, GL_POSITION, blue);
glEnable(GL_LIGHT2);
checkGLcall("Setting up light 3");
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_MATERIAL);
IWineD3DDeviceImpl_MarkStateDirty(This, STATE_RENDER(WINED3DRS_COLORVERTEX));
glDisable(GL_COLOR_MATERIAL);
glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, black);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, black);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, white);
checkGLcall("Setting up materials");
}
/* Enable the needed maps.
* GL_MAP2_VERTEX_3 is needed for positional data.
* GL_AUTO_NORMAL to generate normals from the position. Do not use GL_MAP2_NORMAL.
* GL_MAP2_TEXTURE_COORD_4 for texture coords
*/
num_quads = ceilf(patch->numSegs[0]) * ceilf(patch->numSegs[1]);
out_vertex_size = 3 /* position */;
d3d_out_vertex_size = 3;
glEnable(GL_MAP2_VERTEX_3);
if(patch->has_normals && patch->has_texcoords) {
FIXME("Texcoords not handled yet\n");
feedback_type = GL_3D_COLOR_TEXTURE;
out_vertex_size += 8;
d3d_out_vertex_size += 7;
glEnable(GL_AUTO_NORMAL);
glEnable(GL_MAP2_TEXTURE_COORD_4);
} else if(patch->has_texcoords) {
FIXME("Texcoords not handled yet\n");
feedback_type = GL_3D_COLOR_TEXTURE;
out_vertex_size += 7;
d3d_out_vertex_size += 4;
glEnable(GL_MAP2_TEXTURE_COORD_4);
} else if(patch->has_normals) {
feedback_type = GL_3D_COLOR;
out_vertex_size += 4;
d3d_out_vertex_size += 3;
glEnable(GL_AUTO_NORMAL);
} else {
feedback_type = GL_3D;
}
checkGLcall("glEnable vertex attrib generation");
buffer_size = num_quads * out_vertex_size * 2 /* triangle list */ * 3 /* verts per tri */
+ 4 * num_quads /* 2 triangle markers per quad + num verts in tri */;
feedbuffer = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, buffer_size * sizeof(float) * 8);
glMap2f(GL_MAP2_VERTEX_3,
0.0f, 1.0f, vtxStride / sizeof(float), info->Width,
0.0f, 1.0f, info->Stride * vtxStride / sizeof(float), info->Height,
(const GLfloat *)data);
checkGLcall("glMap2f");
if(patch->has_texcoords) {
glMap2f(GL_MAP2_TEXTURE_COORD_4,
0.0f, 1.0f, vtxStride / sizeof(float), info->Width,
0.0f, 1.0f, info->Stride * vtxStride / sizeof(float), info->Height,
(const GLfloat *)data);
checkGLcall("glMap2f");
}
glMapGrid2f(ceilf(patch->numSegs[0]), 0.0f, 1.0f, ceilf(patch->numSegs[1]), 0.0f, 1.0f);
checkGLcall("glMapGrid2f");
glFeedbackBuffer(buffer_size * 2, feedback_type, feedbuffer);
checkGLcall("glFeedbackBuffer");
glRenderMode(GL_FEEDBACK);
glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
checkGLcall("glEvalMesh2");
i = glRenderMode(GL_RENDER);
if(i == -1) {
LEAVE_GL();
ERR("Feedback failed. Expected %d elements back\n", buffer_size);
HeapFree(GetProcessHeap(), 0, feedbuffer);
context_release(context);
return WINED3DERR_DRIVERINTERNALERROR;
} else if(i != buffer_size) {
LEAVE_GL();
ERR("Unexpected amount of elements returned. Expected %d, got %d\n", buffer_size, i);
HeapFree(GetProcessHeap(), 0, feedbuffer);
context_release(context);
return WINED3DERR_DRIVERINTERNALERROR;
} else {
TRACE("Got %d elements as expected\n", i);
}
HeapFree(GetProcessHeap(), 0, patch->mem);
patch->mem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, num_quads * 6 * d3d_out_vertex_size * sizeof(float) * 8);
i = 0;
for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
if(feedbuffer[j] != GL_POLYGON_TOKEN) {
ERR("Unexpected token: %f\n", feedbuffer[j]);
continue;
}
if(feedbuffer[j + 1] != 3) {
ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
continue;
}
/* Somehow there are different ideas about back / front facing, so fix up the
* vertex order
*/
patch->mem[i + 0] = feedbuffer[j + out_vertex_size * 2 + 2]; /* x, triangle 2 */
patch->mem[i + 1] = feedbuffer[j + out_vertex_size * 2 + 3]; /* y, triangle 2 */
patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 2 + 4] - 0.5f) * 4.0f * max_z; /* z, triangle 3 */
if(patch->has_normals) {
patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 2 + 5];
patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 2 + 6];
patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 2 + 7];
}
i += d3d_out_vertex_size;
patch->mem[i + 0] = feedbuffer[j + out_vertex_size * 1 + 2]; /* x, triangle 2 */
patch->mem[i + 1] = feedbuffer[j + out_vertex_size * 1 + 3]; /* y, triangle 2 */
patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 1 + 4] - 0.5f) * 4.0f * max_z; /* z, triangle 2 */
if(patch->has_normals) {
patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 1 + 5];
patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 1 + 6];
patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 1 + 7];
}
i += d3d_out_vertex_size;
patch->mem[i + 0] = feedbuffer[j + out_vertex_size * 0 + 2]; /* x, triangle 1 */
patch->mem[i + 1] = feedbuffer[j + out_vertex_size * 0 + 3]; /* y, triangle 1 */
patch->mem[i + 2] = (feedbuffer[j + out_vertex_size * 0 + 4] - 0.5f) * 4.0f * max_z; /* z, triangle 1 */
if(patch->has_normals) {
patch->mem[i + 3] = feedbuffer[j + out_vertex_size * 0 + 5];
patch->mem[i + 4] = feedbuffer[j + out_vertex_size * 0 + 6];
patch->mem[i + 5] = feedbuffer[j + out_vertex_size * 0 + 7];
}
i += d3d_out_vertex_size;
}
if(patch->has_normals) {
/* Now do the same with reverse light directions */
static const GLfloat x[] = {-1.0f, 0.0f, 0.0f, 0.0f};
static const GLfloat y[] = { 0.0f, -1.0f, 0.0f, 0.0f};
static const GLfloat z[] = { 0.0f, 0.0f, -1.0f, 0.0f};
glLightfv(GL_LIGHT0, GL_POSITION, x);
glLightfv(GL_LIGHT1, GL_POSITION, y);
glLightfv(GL_LIGHT2, GL_POSITION, z);
checkGLcall("Setting up reverse light directions");
glRenderMode(GL_FEEDBACK);
checkGLcall("glRenderMode(GL_FEEDBACK)");
glEvalMesh2(GL_FILL, 0, ceilf(patch->numSegs[0]), 0, ceilf(patch->numSegs[1]));
checkGLcall("glEvalMesh2");
i = glRenderMode(GL_RENDER);
checkGLcall("glRenderMode(GL_RENDER)");
i = 0;
for(j = 0; j < buffer_size; j += (3 /* num verts */ * out_vertex_size + 2 /* tri marker */)) {
if(feedbuffer[j] != GL_POLYGON_TOKEN) {
ERR("Unexpected token: %f\n", feedbuffer[j]);
continue;
}
if(feedbuffer[j + 1] != 3) {
ERR("Unexpected polygon: %f corners\n", feedbuffer[j + 1]);
continue;
}
if(patch->mem[i + 3] == 0.0f)
patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 2 + 5];
if(patch->mem[i + 4] == 0.0f)
patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 2 + 6];
if(patch->mem[i + 5] == 0.0f)
patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 2 + 7];
normalize_normal(patch->mem + i + 3);
i += d3d_out_vertex_size;
if(patch->mem[i + 3] == 0.0f)
patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 1 + 5];
if(patch->mem[i + 4] == 0.0f)
patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 1 + 6];
if(patch->mem[i + 5] == 0.0f)
patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 1 + 7];
normalize_normal(patch->mem + i + 3);
i += d3d_out_vertex_size;
if(patch->mem[i + 3] == 0.0f)
patch->mem[i + 3] = -feedbuffer[j + out_vertex_size * 0 + 5];
if(patch->mem[i + 4] == 0.0f)
patch->mem[i + 4] = -feedbuffer[j + out_vertex_size * 0 + 6];
if(patch->mem[i + 5] == 0.0f)
patch->mem[i + 5] = -feedbuffer[j + out_vertex_size * 0 + 7];
normalize_normal(patch->mem + i + 3);
i += d3d_out_vertex_size;
}
}
glDisable(GL_MAP2_VERTEX_3);
glDisable(GL_AUTO_NORMAL);
glDisable(GL_MAP2_NORMAL);
glDisable(GL_MAP2_TEXTURE_COORD_4);
checkGLcall("glDisable vertex attrib generation");
LEAVE_GL();
context_release(context);
HeapFree(GetProcessHeap(), 0, feedbuffer);
vtxStride = 3 * sizeof(float);
if(patch->has_normals) {
vtxStride += 3 * sizeof(float);
}
if(patch->has_texcoords) {
vtxStride += 4 * sizeof(float);
}
memset(&patch->strided, 0, sizeof(patch->strided));
patch->strided.position.format = WINED3DFMT_R32G32B32_FLOAT;
patch->strided.position.lpData = (BYTE *) patch->mem;
patch->strided.position.dwStride = vtxStride;
if(patch->has_normals) {
patch->strided.normal.format = WINED3DFMT_R32G32B32_FLOAT;
patch->strided.normal.lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
patch->strided.normal.dwStride = vtxStride;
}
if(patch->has_texcoords) {
patch->strided.texCoords[0].format = WINED3DFMT_R32G32B32A32_FLOAT;
patch->strided.texCoords[0].lpData = (BYTE *) patch->mem + 3 * sizeof(float) /* pos */;
if(patch->has_normals) {
patch->strided.texCoords[0].lpData += 3 * sizeof(float);
}
patch->strided.texCoords[0].dwStride = vtxStride;
}
return WINED3D_OK;
}