nuclear@0: #include <map>
nuclear@0: #include <vector>
nuclear@0: #include "unistate.h"
nuclear@0: #include "shader.h"
nuclear@0: #include "logger.h"
nuclear@0: 
nuclear@15: using namespace goatgfx;
nuclear@15: 
nuclear@0: struct StateItem {
nuclear@0: 	StType type;
nuclear@0: 
nuclear@0: 	union {
nuclear@0: 		int ival[4];
nuclear@0: 		float fval[16];
nuclear@0: 	};
nuclear@0: 	int transpose;	// for matrices
nuclear@0: };
nuclear@0: 
nuclear@0: static const char *typestr(StType type);
nuclear@0: static int type_nelem(StType type);
nuclear@0: static StType float_type(int elem);
nuclear@0: static StType int_type(int elem);
nuclear@0: 
nuclear@15: namespace goatgfx {
nuclear@15: 
nuclear@0: std::vector<StateItem> state;
nuclear@0: std::map<std::string, int> stateidx;
nuclear@0: 
nuclear@0: 
nuclear@0: int add_unistate(const char *name, StType type)
nuclear@0: {
nuclear@0: 	static const float ident3[] = {1, 0, 0, 0, 1, 0, 0, 0, 1};
nuclear@0: 	static const float ident4[] = {1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1};
nuclear@0: 
nuclear@0: 	if(stateidx.find(name) != stateidx.end()) {
nuclear@0: 		return stateidx[name];
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	StateItem sitem;
nuclear@0: 	memset(&sitem, 0, sizeof sitem);
nuclear@0: 	sitem.type = type;
nuclear@0: 
nuclear@0: 	// initialize to a reasonable default value
nuclear@0: 	switch(type) {
nuclear@0: 	case ST_MATRIX3:
nuclear@0: 		memcpy(sitem.fval, ident3, sizeof ident3);
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case ST_MATRIX4:
nuclear@0: 		memcpy(sitem.fval, ident4, sizeof ident4);
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	default:
nuclear@0: 		break;	// in all other cases leave it zero (see memset above)
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	int sidx = state.size();
nuclear@0: 	state.push_back(sitem);
nuclear@0: 	stateidx[name] = sidx;
nuclear@0: 
nuclear@0: 	debug_log("adding uniform state [%d]: %s %s\n", sidx, typestr(sitem.type), name);
nuclear@0: 
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: int get_unistate_index(const char *name)
nuclear@0: {
nuclear@0: 	std::map<std::string, int>::const_iterator it = stateidx.find(name);
nuclear@0: 	if(it != stateidx.end()) {
nuclear@0: 		return it->second;
nuclear@0: 	}
nuclear@0: 	return -1;
nuclear@0: }
nuclear@0: 
nuclear@0: #define CHECK_INDEX(i)	\
nuclear@0: 	if(i < 0 || i >= (int)state.size()) return
nuclear@0: 
nuclear@0: #define CHECK_COUNT(count, type) \
nuclear@0: 	do { \
nuclear@0: 		int max_elem = type_nelem(type); \
nuclear@0: 		if(!(count) || (count) > max_elem) { \
nuclear@0: 			count = max_elem; \
nuclear@0: 		} \
nuclear@0: 	} while(0)
nuclear@0: 
nuclear@0: void set_unistate(int sidx, const int *val, int count)
nuclear@0: {
nuclear@0: 	CHECK_INDEX(sidx);
nuclear@0: 	CHECK_COUNT(count, state[sidx].type);
nuclear@0: 
nuclear@0: 	memcpy(state[sidx].ival, val, count * sizeof *state[sidx].ival);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_unistate(int sidx, const float *val, int count)
nuclear@0: {
nuclear@0: 	CHECK_INDEX(sidx);
nuclear@0: 	CHECK_COUNT(count, state[sidx].type);
nuclear@0: 
nuclear@0: 	memcpy(state[sidx].fval, val, count * sizeof *state[sidx].fval);
nuclear@0: 	state[sidx].transpose = 0;
nuclear@0: }
nuclear@0: 
nuclear@0: void get_unistate(int sidx, int *val, int count)
nuclear@0: {
nuclear@0: 	CHECK_INDEX(sidx);
nuclear@0: 	CHECK_COUNT(count, state[sidx].type);
nuclear@0: 
nuclear@0: 	memcpy(val, state[sidx].ival, count * sizeof *val);
nuclear@0: }
nuclear@0: 
nuclear@0: void get_unistate(int sidx, float *val, int count)
nuclear@0: {
nuclear@0: 	CHECK_INDEX(sidx);
nuclear@0: 	CHECK_COUNT(count, state[sidx].type);
nuclear@0: 
nuclear@0: 	memcpy(val, state[sidx].fval, count * sizeof *val);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_unistate(int sidx, int val)
nuclear@0: {
nuclear@0: 	set_unistate(sidx, &val, 1);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_unistate(int sidx, float val)
nuclear@0: {
nuclear@0: 	set_unistate(sidx, &val, 1);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_unistate(int sidx, const Vector2 &vec)
nuclear@0: {
nuclear@0: 	set_unistate(sidx, &vec.x, 2);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_unistate(int sidx, const Vector3 &vec)
nuclear@0: {
nuclear@0: 	set_unistate(sidx, &vec.x, 3);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_unistate(int sidx, const Vector4 &vec)
nuclear@0: {
nuclear@0: 	set_unistate(sidx, &vec.x, 4);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_unistate(int sidx, const Matrix3x3 &mat)
nuclear@0: {
nuclear@0: 	set_unistate(sidx, mat[0], 9);
nuclear@0: 	state[sidx].transpose = 1;
nuclear@0: }
nuclear@0: 
nuclear@0: void set_unistate(int sidx, const Matrix4x4 &mat)
nuclear@0: {
nuclear@0: 	set_unistate(sidx, mat[0], 16);
nuclear@0: 	state[sidx].transpose = 1;
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: int set_unistate(const char *name, int *val, int count)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx < 0) {
nuclear@0: 		StType type = int_type(count);
nuclear@0: 		if(type == ST_UNKNOWN) {
nuclear@0: 			error_log("invalid element count (%d) while setting previously unknown unistate item \"%s\"\n",
nuclear@0: 					count, name);
nuclear@0: 			return -1;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		sidx = add_unistate(name, type);
nuclear@0: 	}
nuclear@0: 	set_unistate(sidx, val);
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: int set_unistate(const char *name, float *val, int count)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx < 0) {
nuclear@0: 		StType type = float_type(count);
nuclear@0: 		if(type == ST_UNKNOWN) {
nuclear@0: 			error_log("invalid element count (%d) while setting previously unknown unistate item \"%s\"\n",
nuclear@0: 					count, name);
nuclear@0: 			return -1;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		sidx = add_unistate(name, type);
nuclear@0: 	}
nuclear@0: 	set_unistate(sidx, val);
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: int set_unistate(const char *name, int val)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx < 0) {
nuclear@0: 		sidx = add_unistate(name, ST_INT);
nuclear@0: 	}
nuclear@0: 	set_unistate(sidx, val);
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: int set_unistate(const char *name, float val)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx < 0) {
nuclear@0: 		sidx = add_unistate(name, ST_FLOAT);
nuclear@0: 	}
nuclear@0: 	set_unistate(sidx, val);
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: int set_unistate(const char *name, const Vector2 &vec)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx < 0) {
nuclear@0: 		sidx = add_unistate(name, ST_FLOAT2);
nuclear@0: 	}
nuclear@0: 	set_unistate(sidx, vec);
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: int set_unistate(const char *name, const Vector3 &vec)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx < 0) {
nuclear@0: 		sidx = add_unistate(name, ST_FLOAT3);
nuclear@0: 	}
nuclear@0: 	set_unistate(sidx, vec);
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: int set_unistate(const char *name, const Vector4 &vec)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx < 0) {
nuclear@0: 		sidx = add_unistate(name, ST_FLOAT4);
nuclear@0: 	}
nuclear@0: 	set_unistate(sidx, vec);
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: int set_unistate(const char *name, const Matrix3x3 &mat)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx < 0) {
nuclear@0: 		sidx = add_unistate(name, ST_MATRIX3);
nuclear@0: 	}
nuclear@0: 	set_unistate(sidx, mat);
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: int set_unistate(const char *name, const Matrix4x4 &mat)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx < 0) {
nuclear@0: 		sidx = add_unistate(name, ST_MATRIX4);
nuclear@0: 	}
nuclear@0: 	set_unistate(sidx, mat);
nuclear@0: 	return sidx;
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: int get_unistate_int(int sidx)
nuclear@0: {
nuclear@0: 	int val = 0;
nuclear@0: 	get_unistate(sidx, &val, 1);
nuclear@0: 	return val;
nuclear@0: }
nuclear@0: 
nuclear@0: float get_unistate_float(int sidx)
nuclear@0: {
nuclear@0: 	float val = 0.0f;
nuclear@0: 	get_unistate(sidx, &val, 1);
nuclear@0: 	return val;
nuclear@0: }
nuclear@0: 
nuclear@0: Vector2 get_unistate_vec2(int sidx)
nuclear@0: {
nuclear@0: 	float val[2] = {0.0f, 0.0f};
nuclear@0: 	get_unistate(sidx, val, 2);
nuclear@0: 	return Vector2(val[0], val[1]);
nuclear@0: }
nuclear@0: 
nuclear@0: Vector3 get_unistate_vec3(int sidx)
nuclear@0: {
nuclear@0: 	float val[3] = {0.0f, 0.0f, 0.0f};
nuclear@0: 	get_unistate(sidx, val, 3);
nuclear@0: 	return Vector3(val[0], val[1], val[2]);
nuclear@0: }
nuclear@0: 
nuclear@0: Vector4 get_unistate_vec4(int sidx)
nuclear@0: {
nuclear@0: 	float val[4] = {0.0f, 0.0f, 0.0f};
nuclear@0: 	get_unistate(sidx, val, 4);
nuclear@0: 	return Vector4(val[0], val[1], val[2], val[3]);
nuclear@0: }
nuclear@0: 
nuclear@0: Matrix3x3 get_unistate_mat3(int sidx)
nuclear@0: {
nuclear@0: 	Matrix3x3 res;
nuclear@0: 	get_unistate(sidx, res.m[0], 9);
nuclear@0: 	return res;
nuclear@0: }
nuclear@0: 
nuclear@0: Matrix4x4 get_unistate_mat4(int sidx)
nuclear@0: {
nuclear@0: 	Matrix4x4 res;
nuclear@0: 	get_unistate(sidx, res.m[0], 16);
nuclear@0: 	return res;
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: int get_unistate_int(const char *name)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		return 0;
nuclear@0: 	}
nuclear@0: 	return get_unistate_int(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: float get_unistate_float(const char *name)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		return 0.0f;
nuclear@0: 	}
nuclear@0: 	return get_unistate_float(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: Vector2 get_unistate_vec2(const char *name)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		return Vector2();
nuclear@0: 	}
nuclear@0: 	return get_unistate_vec2(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: Vector3 get_unistate_vec3(const char *name)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		return Vector3();
nuclear@0: 	}
nuclear@0: 	return get_unistate_vec3(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: Vector4 get_unistate_vec4(const char *name)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		return Vector4();
nuclear@0: 	}
nuclear@0: 	return get_unistate_vec4(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: Matrix3x3 get_unistate_mat3(const char *name)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		return Matrix3x3();
nuclear@0: 	}
nuclear@0: 	return get_unistate_mat3(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: Matrix4x4 get_unistate_mat4(const char *name)
nuclear@0: {
nuclear@0: 	int sidx = get_unistate_index(name);
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		return Matrix4x4();
nuclear@0: 	}
nuclear@0: 	return get_unistate_mat4(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: void setup_unistate(const ShaderProg *sdr)
nuclear@0: {
nuclear@0: 	if(!sdr) {
nuclear@0: 		if(!(sdr = ShaderProg::current)) {
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	sdr->setup_state_uniforms();
nuclear@0: }
nuclear@0: 
nuclear@0: bool setup_unistate(int sidx, const ShaderProg *sdr, int loc)
nuclear@0: {
nuclear@0: 	if(loc < 0 || sidx < 0 || sidx >= (int)state.size()) {
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	CHECKGLERR;
nuclear@0: 	glUseProgram(sdr->get_id());
nuclear@0: 	CHECKGLERR;
nuclear@0: 
nuclear@0: 	switch(state[sidx].type) {
nuclear@0: 	case ST_INT:
nuclear@0: 		glUniform1iv(loc, 1, state[sidx].ival);
nuclear@0: 		break;
nuclear@0: 	case ST_INT2:
nuclear@0: 		glUniform2iv(loc, 1, state[sidx].ival);
nuclear@0: 		break;
nuclear@0: 	case ST_INT3:
nuclear@0: 		glUniform3iv(loc, 1, state[sidx].ival);
nuclear@0: 		break;
nuclear@0: 	case ST_INT4:
nuclear@0: 		glUniform4iv(loc, 1, state[sidx].ival);
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case ST_FLOAT:
nuclear@0: 		glUniform1fv(loc, 1, state[sidx].fval);
nuclear@0: 		break;
nuclear@0: 	case ST_FLOAT2:
nuclear@0: 		glUniform2fv(loc, 1, state[sidx].fval);
nuclear@0: 		break;
nuclear@0: 	case ST_FLOAT3:
nuclear@0: 		glUniform3fv(loc, 1, state[sidx].fval);
nuclear@0: 		break;
nuclear@0: 	case ST_FLOAT4:
nuclear@0: 		glUniform4fv(loc, 1, state[sidx].fval);
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case ST_MATRIX3:
nuclear@0: #ifdef GL_ES_VERSION_2_0
nuclear@0: 		{
nuclear@0: 			float tmat[9], *ptr = tmat;
nuclear@0: 			for(int i=0; i<3; i++) {
nuclear@0: 				for(int j=0; j<3; j++) {
nuclear@0: 					*ptr++ = state[sidx].fval[j * 3 + i];
nuclear@0: 				}
nuclear@0: 			}
nuclear@0: 			glUniformMatrix3fv(loc, 1, GL_FALSE, tmat);
nuclear@0: 		}
nuclear@0: #else
nuclear@0: 		glUniformMatrix3fv(loc, 1, state[sidx].transpose, state[sidx].fval);
nuclear@0: #endif
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case ST_MATRIX4:
nuclear@0: #ifdef GL_ES_VERSION_2_0
nuclear@0: 		{
nuclear@0: 			float tmat[16], *ptr = tmat;
nuclear@0: 			for(int i=0; i<4; i++) {
nuclear@0: 				for(int j=0; j<4; j++) {
nuclear@0: 					*ptr++ = state[sidx].fval[j * 4 + i];
nuclear@0: 				}
nuclear@0: 			}
nuclear@0: 			glUniformMatrix4fv(loc, 1, GL_FALSE, tmat);
nuclear@0: 		}
nuclear@0: #else
nuclear@0: 		glUniformMatrix4fv(loc, 1, state[sidx].transpose, state[sidx].fval);
nuclear@0: #endif
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	default:
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	CHECKGLERR;
nuclear@0: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: bool setup_unistate(const char *name, const ShaderProg *sdr)
nuclear@0: {
nuclear@0: 	int loc = sdr->get_uniform_location(name);
nuclear@0: 	if(loc == -1) {
nuclear@0: 		return false;
nuclear@0: 	}
nuclear@0: 	return setup_unistate(get_unistate_index(name), sdr, loc);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_world_matrix(const Matrix4x4 &mat)
nuclear@0: {
nuclear@0: 	static int sidx = -1, sidx_transp, sidx_mat3;
nuclear@0: 
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		sidx = add_unistate("st_world_matrix", ST_MATRIX4);
nuclear@0: 		sidx_mat3 = add_unistate("st_world_matrix3", ST_MATRIX3);
nuclear@0: 		sidx_transp = add_unistate("st_world_matrix_transpose", ST_MATRIX4);
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	set_unistate(sidx, mat);
nuclear@0: 	set_unistate(sidx_mat3, Matrix3x3(mat));
nuclear@0: 	set_unistate(sidx_transp, mat[0]);	// by using the float* variant, we unset the transpose flag
nuclear@0: }
nuclear@0: 
nuclear@0: void set_view_matrix(const Matrix4x4 &mat)
nuclear@0: {
nuclear@0: 	static int sidx = -1, sidx_transp, sidx_mat3;
nuclear@0: 
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		sidx = add_unistate("st_view_matrix", ST_MATRIX4);
nuclear@0: 		sidx_mat3 = add_unistate("st_view_matrix3", ST_MATRIX3);
nuclear@0: 		sidx_transp = add_unistate("st_view_matrix_transpose", ST_MATRIX4);
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	set_unistate(sidx, mat);
nuclear@0: 	set_unistate(sidx_mat3, Matrix3x3(mat));
nuclear@0: 	set_unistate(sidx_transp, mat[0]);	// by using the float* variant, we unset the transpose flag
nuclear@0: }
nuclear@0: 
nuclear@0: void set_projection_matrix(const Matrix4x4 &mat)
nuclear@0: {
nuclear@0: 	static int sidx = -1;
nuclear@0: 
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		sidx = add_unistate("st_proj_matrix", ST_MATRIX4);
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	set_unistate(sidx, mat);
nuclear@0: }
nuclear@0: 
nuclear@0: void set_texture_matrix(const Matrix4x4 &mat)
nuclear@0: {
nuclear@0: 	static int sidx = -1;
nuclear@0: 
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		sidx = add_unistate("st_tex_matrix", ST_MATRIX4);
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	set_unistate(sidx, mat);
nuclear@0: }
nuclear@0: 
nuclear@0: Matrix4x4 get_world_matrix()
nuclear@0: {
nuclear@0: 	static int sidx = -1;
nuclear@0: 
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		if((sidx = get_unistate_index("st_world_matrix")) == -1) {
nuclear@0: 			return Matrix4x4();
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	return get_unistate_mat4(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: Matrix4x4 get_view_matrix()
nuclear@0: {
nuclear@0: 	static int sidx = -1;
nuclear@0: 
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		if((sidx = get_unistate_index("st_view_matrix")) == -1) {
nuclear@0: 			return Matrix4x4();
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	return get_unistate_mat4(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: Matrix4x4 get_projection_matrix()
nuclear@0: {
nuclear@0: 	static int sidx = -1;
nuclear@0: 
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		if((sidx = get_unistate_index("st_proj_matrix")) == -1) {
nuclear@0: 			return Matrix4x4();
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	return get_unistate_mat4(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: Matrix4x4 get_texture_matrix()
nuclear@0: {
nuclear@0: 	static int sidx = -1;
nuclear@0: 
nuclear@0: 	if(sidx == -1) {
nuclear@0: 		if((sidx = get_unistate_index("st_tex_matrix")) == -1) {
nuclear@0: 			return Matrix4x4();
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	return get_unistate_mat4(sidx);
nuclear@0: }
nuclear@0: 
nuclear@0: void setup_gl_matrices()
nuclear@0: {
nuclear@0: #ifdef USE_OLDGL
nuclear@0: 	Matrix4x4 modelview = get_world_matrix() * get_view_matrix();
nuclear@0: 	Matrix4x4 proj = get_projection_matrix();
nuclear@0: 	Matrix4x4 tex = get_texture_matrix();
nuclear@0: 
nuclear@0: 	glMatrixMode(GL_TEXTURE);
nuclear@0: 	glLoadTransposeMatrixf(tex[0]);
nuclear@0: 	glMatrixMode(GL_PROJECTION);
nuclear@0: 	glLoadTransposeMatrixf(proj[0]);
nuclear@0: 	glMatrixMode(GL_MODELVIEW);
nuclear@0: 	glLoadTransposeMatrixf(modelview[0]);
nuclear@0: #endif
nuclear@0: }
nuclear@0: 
nuclear@15: }	// namespace goatgfx
nuclear@15: 
nuclear@0: static const char *typestr(StType type)
nuclear@0: {
nuclear@0: 	switch(type) {
nuclear@0: 	case ST_INT:
nuclear@0: 		return "int";
nuclear@0: 	case ST_INT2:
nuclear@0: 		return "ivec2";
nuclear@0: 	case ST_INT3:
nuclear@0: 		return "ivec3";
nuclear@0: 	case ST_INT4:
nuclear@0: 		return "ivec4";
nuclear@0: 	case ST_FLOAT:
nuclear@0: 		return "float";
nuclear@0: 	case ST_FLOAT2:
nuclear@0: 		return "vec2";
nuclear@0: 	case ST_FLOAT3:
nuclear@0: 		return "vec3";
nuclear@0: 	case ST_FLOAT4:
nuclear@0: 		return "vec4";
nuclear@0: 	case ST_MATRIX3:
nuclear@0: 		return "mat3";
nuclear@0: 	case ST_MATRIX4:
nuclear@0: 		return "mat4";
nuclear@0: 
nuclear@0: 	default:
nuclear@0: 		break;
nuclear@0: 	}
nuclear@0: 	return "<unknown>";
nuclear@0: }
nuclear@0: 
nuclear@0: static int type_nelem(StType type)
nuclear@0: {
nuclear@0: 	switch(type) {
nuclear@0: 	case ST_INT:
nuclear@0: 	case ST_FLOAT:
nuclear@0: 		return 1;
nuclear@0: 	case ST_INT2:
nuclear@0: 	case ST_FLOAT2:
nuclear@0: 		return 2;
nuclear@0: 	case ST_INT3:
nuclear@0: 	case ST_FLOAT3:
nuclear@0: 		return 3;
nuclear@0: 	case ST_INT4:
nuclear@0: 	case ST_FLOAT4:
nuclear@0: 		return 4;
nuclear@0: 	case ST_MATRIX3:
nuclear@0: 		return 9;
nuclear@0: 	case ST_MATRIX4:
nuclear@0: 		return 16;
nuclear@0: 
nuclear@0: 	default:
nuclear@0: 		break;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: static StType float_type(int elem)
nuclear@0: {
nuclear@0: 	switch(elem) {
nuclear@0: 	case 1:
nuclear@0: 		return ST_FLOAT;
nuclear@0: 	case 2:
nuclear@0: 		return ST_FLOAT2;
nuclear@0: 	case 3:
nuclear@0: 		return ST_FLOAT3;
nuclear@0: 	case 4:
nuclear@0: 		return ST_FLOAT4;
nuclear@0: 	case 9:
nuclear@0: 		return ST_MATRIX3;
nuclear@0: 	case 16:
nuclear@0: 		return ST_MATRIX4;
nuclear@0: 	default:
nuclear@0: 		break;
nuclear@0: 	}
nuclear@0: 	return ST_UNKNOWN;
nuclear@0: }
nuclear@0: 
nuclear@0: static StType int_type(int elem)
nuclear@0: {
nuclear@0: 	switch(elem) {
nuclear@0: 	case 1:
nuclear@0: 		return ST_INT;
nuclear@0: 	case 2:
nuclear@0: 		return ST_INT2;
nuclear@0: 	case 3:
nuclear@0: 		return ST_INT3;
nuclear@0: 	case 4:
nuclear@0: 		return ST_INT4;
nuclear@0: 	default:
nuclear@0: 		break;
nuclear@0: 	}
nuclear@0: 	return ST_UNKNOWN;
nuclear@0: }