/* glsl_iqm.c GLSL IQM rendering Copyright (C) 2012 Bill Currie Author: Bill Currie Date: 2012/5/11 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #define NH_DEFINE #include "namehack.h" #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #include #include "QF/cvar.h" #include "QF/render.h" #include "QF/skin.h" #include "QF/sys.h" #include "QF/GLSL/defines.h" #include "QF/GLSL/funcs.h" #include "QF/GLSL/qf_iqm.h" #include "QF/GLSL/qf_textures.h" #include "QF/GLSL/qf_vid.h" #include "r_internal.h" static const char *iqm_vert_effects[] = { "QuakeForge.Math.quaternion", "QuakeForge.Vertex.iqm", 0 }; static const char *iqm_frag_effects[] = { "QuakeForge.Fragment.fog", "QuakeForge.Fragment.iqm", 0 }; typedef struct { shaderparam_t position; shaderparam_t color; } lightpar_t; #define MAX_IQM_LIGHTS 8 #define MAX_IQM_BONES 80 static struct { int program; shaderparam_t mvp_matrix; shaderparam_t norm_matrix; shaderparam_t bonemats; shaderparam_t vcolor; shaderparam_t vweights; shaderparam_t vbones; shaderparam_t texcoord; shaderparam_t vtangent; shaderparam_t vnormal; shaderparam_t vposition; shaderparam_t ambient; lightpar_t lights[MAX_IQM_LIGHTS]; shaderparam_t texture; shaderparam_t normalmap; shaderparam_t fog; } iqm_shader = { 0, {"mvp_mat", 1}, {"norm_mat", 1}, {"bonemats", 1}, {"vcolor", 0}, {"vweights", 0}, {"vbones", 0}, {"texcoord", 0}, {"vtangent", 0}, {"vnormal", 0}, {"vposition", 0}, {"ambient", 1}, { {{"lights[0].position", 1}, {"lights[0].color", 1}}, {{"lights[1].position", 1}, {"lights[1].color", 1}}, {{"lights[2].position", 1}, {"lights[2].color", 1}}, {{"lights[3].position", 1}, {"lights[3].color", 1}}, {{"lights[4].position", 1}, {"lights[4].color", 1}}, {{"lights[5].position", 1}, {"lights[5].color", 1}}, {{"lights[6].position", 1}, {"lights[6].color", 1}}, {{"lights[7].position", 1}, {"lights[7].color", 1}}, }, {"texture", 1}, {"normalmap", 1}, {"fog", 1}, }; static struct va_attr_s { shaderparam_t *attr; GLint size; GLenum type; GLboolean normalized; } vertex_attribs[] = { {&iqm_shader.vposition, 3, GL_FLOAT, 0}, {&iqm_shader.texcoord, 2, GL_FLOAT, 0}, {&iqm_shader.vnormal, 3, GL_FLOAT, 0}, {&iqm_shader.vtangent, 4, GL_FLOAT, 0}, {&iqm_shader.vbones, 4, GL_UNSIGNED_BYTE, 0}, {&iqm_shader.vweights, 4, GL_UNSIGNED_BYTE, 1}, {&iqm_shader.vcolor, 4, GL_UNSIGNED_BYTE, 1}, }; static mat4_t iqm_vp; void glsl_R_InitIQM (void) { shader_t *vert_shader, *frag_shader; int vert; int frag; int i; vert_shader = GLSL_BuildShader (iqm_vert_effects); frag_shader = GLSL_BuildShader (iqm_frag_effects); vert = GLSL_CompileShader ("iqm.vert", vert_shader, GL_VERTEX_SHADER); frag = GLSL_CompileShader ("iqm.frag", frag_shader, GL_FRAGMENT_SHADER); iqm_shader.program = GLSL_LinkProgram ("iqm", vert, frag); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.mvp_matrix); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.norm_matrix); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.bonemats); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.vcolor); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.vweights); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.vbones); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.texcoord); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.vtangent); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.vnormal); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.vposition); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.ambient); for (i = 0; i < MAX_IQM_LIGHTS; i++) { GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.lights[i].position); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.lights[i].color); } GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.texture); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.normalmap); GLSL_ResolveShaderParam (iqm_shader.program, &iqm_shader.fog); GLSL_FreeShader (vert_shader); GLSL_FreeShader (frag_shader); } static void set_arrays (iqm_t *iqm) { int i; uint32_t j; struct va_attr_s *attr; iqmvertexarray *va; for (i = 0, j = 0; i < iqm->num_arrays; i++) { va = &iqm->vertexarrays[i]; if (va->type > IQM_COLOR) Sys_Error ("iqm: unknown array type"); if (j > va->type) Sys_Error ("iqm: array order bogus"); while (j < va->type) qfeglDisableVertexAttribArray (vertex_attribs[j++].attr->location); attr = &vertex_attribs[j++]; qfeglEnableVertexAttribArray (attr->attr->location); qfeglVertexAttribPointer (attr->attr->location, attr->size, attr->type, attr->normalized, iqm->stride, iqm->vertices + va->offset); //(byte *) 0 + va->offset); } while (j <= IQM_COLOR) qfeglDisableVertexAttribArray (vertex_attribs[j++].attr->location); } void glsl_R_DrawIQM (void) { static quat_t color = { 1, 1, 1, 1}; entity_t *ent = currententity; model_t *model = ent->model; iqm_t *iqm = (iqm_t *) model->aliashdr; glsliqm_t *glsl = (glsliqm_t *) iqm->extra_data; dlight_t *lights[MAX_IQM_LIGHTS]; int i; vec_t norm_mat[9]; mat4_t mvp_mat; float blend; iqmframe_t *frame; R_LightPoint (ent->origin); //FIXME min_light? VectorScale (ambientcolor, 1/255.0, ambientcolor); R_FindNearLights (ent->origin, MAX_IQM_LIGHTS, lights); // we need only the rotation for normals. VectorCopy (ent->transform + 0, norm_mat + 0); VectorCopy (ent->transform + 4, norm_mat + 3); VectorCopy (ent->transform + 8, norm_mat + 6); Mat4Mult (iqm_vp, ent->transform, mvp_mat); blend = R_IQMGetLerpedFrames (ent, iqm); frame = R_IQMBlendFrames (iqm, ent->pose1, ent->pose2, blend, 0); qfeglUniform3fv (iqm_shader.ambient.location, 1, ambientcolor); for (i = 0; i < MAX_IQM_LIGHTS; i++) { quat_t val; lightpar_t *l = &iqm_shader.lights[i]; if (!lights[i]) break; VectorSubtract (lights[i]->origin, ent->origin, val); val[3] = lights[i]->radius; qfeglUniform4fv (l->position.location, 1, val); qfeglUniform4fv (l->color.location, 1, lights[i]->color); } for (; i < MAX_IQM_LIGHTS; i++) { lightpar_t *l = &iqm_shader.lights[i]; qfeglUniform4fv (l->position.location, 1, quat_origin); qfeglUniform4fv (l->color.location, 1, quat_origin); } qfeglBindBuffer (GL_ARRAY_BUFFER, glsl->vertex_array); qfeglBindBuffer (GL_ELEMENT_ARRAY_BUFFER, glsl->element_array); qfeglUniformMatrix4fv (iqm_shader.mvp_matrix.location, 1, false, mvp_mat); qfeglUniformMatrix3fv (iqm_shader.norm_matrix.location, 1, false, norm_mat); qfeglUniformMatrix4fv (iqm_shader.bonemats.location, iqm->num_joints, false, (float *) frame); qfeglVertexAttrib4fv (iqm_shader.vcolor.location, color); set_arrays (iqm); for (i = 0; i < iqm->num_meshes; i++) { qfeglActiveTexture (GL_TEXTURE0 + 0); qfeglBindTexture (GL_TEXTURE_2D, glsl->textures[i]); qfeglActiveTexture (GL_TEXTURE0 + 1); qfeglBindTexture (GL_TEXTURE_2D, glsl->normmaps[i]); qfeglDrawElements (GL_TRIANGLES, 3 * iqm->meshes[i].num_triangles, GL_UNSIGNED_SHORT, iqm->elements + 3 * iqm->meshes[i].first_triangle); } } // All iqm models are drawn in a batch, so avoid thrashing the gl state void glsl_R_IQMBegin (void) { quat_t fog; // pre-multiply the view and projection matricies Mat4Mult (glsl_projection, glsl_view, iqm_vp); qfeglUseProgram (iqm_shader.program); VectorCopy (glsl_Fog_GetColor (), fog); fog[3] = glsl_Fog_GetDensity () / 64.0; qfeglUniform4fv (iqm_shader.fog.location, 1, fog); qfeglUniform1i (iqm_shader.texture.location, 0); qfeglActiveTexture (GL_TEXTURE0 + 0); qfeglEnable (GL_TEXTURE_2D); qfeglUniform1i (iqm_shader.normalmap.location, 1); qfeglActiveTexture (GL_TEXTURE0 + 1); qfeglEnable (GL_TEXTURE_2D); } void glsl_R_IQMEnd (void) { int i; qfeglBindBuffer (GL_ARRAY_BUFFER, 0); qfeglBindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0); for (i = 0; i <= IQM_COLOR; i++) qfeglDisableVertexAttribArray (vertex_attribs[i].attr->location); }