Welcome to mirror list, hosted at ThFree Co, Russian Federation.

git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
path: root/source/blender/gpu/intern/gpu_lamp.c
diff options
context:
space:
mode:
Diffstat (limited to 'source/blender/gpu/intern/gpu_lamp.c')
-rw-r--r--source/blender/gpu/intern/gpu_lamp.c483
1 files changed, 483 insertions, 0 deletions
diff --git a/source/blender/gpu/intern/gpu_lamp.c b/source/blender/gpu/intern/gpu_lamp.c
new file mode 100644
index 00000000000..3c49c057b49
--- /dev/null
+++ b/source/blender/gpu/intern/gpu_lamp.c
@@ -0,0 +1,483 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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 the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2006 Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): Brecht Van Lommel, Clément Foucault.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file blender/gpu/intern/gpu_lamp.c
+ * \ingroup gpu
+ *
+ * Manages Opengl lights.
+ */
+
+#include "MEM_guardedalloc.h"
+
+#include "DNA_lamp_types.h"
+#include "DNA_object_types.h"
+#include "DNA_scene_types.h"
+
+#include "BLI_listbase.h"
+#include "BLI_math.h"
+#include "BLI_utildefines.h"
+
+#include "BKE_group.h"
+
+#include "GPU_framebuffer.h"
+#include "GPU_glew.h"
+#include "GPU_lamp.h"
+#include "GPU_material.h"
+#include "GPU_shader.h"
+#include "GPU_texture.h"
+
+#include "gpu_lamp_private.h"
+
+bool GPU_lamp_visible(GPULamp *lamp, Material *ma)
+{
+ if (lamp->hide)
+ return false;
+ else if (ma && ma->group)
+ return BKE_group_object_exists(ma->group, lamp->ob);
+ else
+ return true;
+}
+
+static void gpu_lamp_calc_winmat(GPULamp *lamp)
+{
+ float temp, angle, pixsize, wsize;
+
+ if (lamp->type == LA_SUN) {
+ wsize = lamp->la->shadow_frustum_size;
+ orthographic_m4(lamp->winmat, -wsize, wsize, -wsize, wsize, lamp->d, lamp->clipend);
+ }
+ else if (lamp->type == LA_SPOT) {
+ angle = saacos(lamp->spotsi);
+ temp = 0.5f * lamp->size * cosf(angle) / sinf(angle);
+ pixsize = lamp->d / temp;
+ wsize = pixsize * 0.5f * lamp->size;
+ /* compute shadows according to X and Y scaling factors */
+ perspective_m4(
+ lamp->winmat,
+ -wsize * lamp->spotvec[0], wsize * lamp->spotvec[0],
+ -wsize * lamp->spotvec[1], wsize * lamp->spotvec[1],
+ lamp->d, lamp->clipend);
+ }
+}
+
+void GPU_lamp_update(GPULamp *lamp, int lay, int hide, float obmat[4][4])
+{
+ float mat[4][4];
+ float obmat_scale[3];
+
+ lamp->lay = lay;
+ lamp->hide = hide;
+
+ normalize_m4_m4_ex(mat, obmat, obmat_scale);
+
+ copy_v3_v3(lamp->vec, mat[2]);
+ copy_v3_v3(lamp->co, mat[3]);
+ copy_m4_m4(lamp->obmat, mat);
+ invert_m4_m4(lamp->imat, mat);
+
+ if (lamp->type == LA_SPOT) {
+ /* update spotlamp scale on X and Y axis */
+ lamp->spotvec[0] = obmat_scale[0] / obmat_scale[2];
+ lamp->spotvec[1] = obmat_scale[1] / obmat_scale[2];
+ }
+
+ if (GPU_lamp_has_shadow_buffer(lamp)) {
+ /* makeshadowbuf */
+ gpu_lamp_calc_winmat(lamp);
+ }
+}
+
+void GPU_lamp_update_colors(GPULamp *lamp, float r, float g, float b, float energy)
+{
+ lamp->energy = energy;
+ if (lamp->mode & LA_NEG) lamp->energy = -lamp->energy;
+
+ lamp->col[0] = r;
+ lamp->col[1] = g;
+ lamp->col[2] = b;
+}
+
+void GPU_lamp_update_distance(GPULamp *lamp, float distance, float att1, float att2,
+ float coeff_const, float coeff_lin, float coeff_quad)
+{
+ lamp->dist = distance;
+ lamp->att1 = att1;
+ lamp->att2 = att2;
+ lamp->coeff_const = coeff_const;
+ lamp->coeff_lin = coeff_lin;
+ lamp->coeff_quad = coeff_quad;
+}
+
+void GPU_lamp_update_spot(GPULamp *lamp, float spotsize, float spotblend)
+{
+ lamp->spotsi = cosf(spotsize * 0.5f);
+ lamp->spotbl = (1.0f - lamp->spotsi) * spotblend;
+}
+
+static void gpu_lamp_from_blender(Scene *scene, Object *ob, Object *par, Lamp *la, GPULamp *lamp)
+{
+ lamp->scene = scene;
+ lamp->ob = ob;
+ lamp->par = par;
+ lamp->la = la;
+
+ /* add_render_lamp */
+ lamp->mode = la->mode;
+ lamp->type = la->type;
+
+ lamp->energy = la->energy;
+ if (lamp->mode & LA_NEG) lamp->energy = -lamp->energy;
+
+ lamp->col[0] = la->r;
+ lamp->col[1] = la->g;
+ lamp->col[2] = la->b;
+
+ GPU_lamp_update(lamp, ob->lay, (ob->restrictflag & OB_RESTRICT_RENDER), ob->obmat);
+
+ lamp->spotsi = la->spotsize;
+ if (lamp->mode & LA_HALO)
+ if (lamp->spotsi > DEG2RADF(170.0f))
+ lamp->spotsi = DEG2RADF(170.0f);
+ lamp->spotsi = cosf(lamp->spotsi * 0.5f);
+ lamp->spotbl = (1.0f - lamp->spotsi) * la->spotblend;
+ lamp->k = la->k;
+
+ lamp->dist = la->dist;
+ lamp->falloff_type = la->falloff_type;
+ lamp->att1 = la->att1;
+ lamp->att2 = la->att2;
+ lamp->coeff_const = la->coeff_const;
+ lamp->coeff_lin = la->coeff_lin;
+ lamp->coeff_quad = la->coeff_quad;
+ lamp->curfalloff = la->curfalloff;
+
+ /* initshadowbuf */
+ lamp->bias = 0.02f * la->bias;
+ lamp->size = la->bufsize;
+ lamp->d = la->clipsta;
+ lamp->clipend = la->clipend;
+
+ /* arbitrary correction for the fact we do no soft transition */
+ lamp->bias *= 0.25f;
+}
+
+static void gpu_lamp_shadow_free(GPULamp *lamp)
+{
+ if (lamp->tex) {
+ GPU_texture_free(lamp->tex);
+ lamp->tex = NULL;
+ }
+ if (lamp->depthtex) {
+ GPU_texture_free(lamp->depthtex);
+ lamp->depthtex = NULL;
+ }
+ if (lamp->fb) {
+ GPU_framebuffer_free(lamp->fb);
+ lamp->fb = NULL;
+ }
+ if (lamp->blurtex) {
+ GPU_texture_free(lamp->blurtex);
+ lamp->blurtex = NULL;
+ }
+ if (lamp->blurfb) {
+ GPU_framebuffer_free(lamp->blurfb);
+ lamp->blurfb = NULL;
+ }
+}
+
+static GPUTexture *gpu_lamp_create_vsm_shadow_map(int size)
+{
+ return GPU_texture_create_2D_custom(size, size, 2, GPU_RG32F, NULL, NULL);
+}
+
+LampEngineData *GPU_lamp_engine_data_get(Scene *scene, Object *ob, Object *par, struct RenderEngineType *re)
+{
+ GPULamp *lamp;
+ LinkData *link;
+
+ for (link = ob->gpulamp.first; link; link = link->next) {
+ lamp = (GPULamp *)link->data;
+
+ if ((lamp->par == par) && (lamp->scene == scene) && (lamp->re == re))
+ return &lamp->data;
+ }
+
+ lamp = MEM_callocN(sizeof(GPULamp), "GPULamp");
+
+ link = MEM_callocN(sizeof(LinkData), "GPULampLink");
+ link->data = lamp;
+ BLI_addtail(&ob->gpulamp, link);
+
+ lamp->scene = scene;
+ lamp->ob = ob;
+ lamp->par = par;
+ lamp->la = ob->data;
+ lamp->re = re;
+
+ return &lamp->data;
+}
+
+GPULamp *GPU_lamp_from_blender(Scene *scene, Object *ob, Object *par)
+{
+ Lamp *la;
+ GPULamp *lamp;
+ LinkData *link;
+
+ for (link = ob->gpulamp.first; link; link = link->next) {
+ lamp = (GPULamp *)link->data;
+
+ if (lamp->par == par && lamp->scene == scene)
+ return link->data;
+ }
+
+ lamp = MEM_callocN(sizeof(GPULamp), "GPULamp");
+
+ link = MEM_callocN(sizeof(LinkData), "GPULampLink");
+ link->data = lamp;
+ BLI_addtail(&ob->gpulamp, link);
+
+ la = ob->data;
+ gpu_lamp_from_blender(scene, ob, par, la, lamp);
+
+ if ((la->type == LA_SPOT && (la->mode & (LA_SHAD_BUF | LA_SHAD_RAY))) ||
+ (la->type == LA_SUN && (la->mode & LA_SHAD_RAY)))
+ {
+ /* opengl */
+ lamp->fb = GPU_framebuffer_create();
+ if (!lamp->fb) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ if (lamp->la->shadowmap_type == LA_SHADMAP_VARIANCE) {
+ /* Shadow depth map */
+ lamp->depthtex = GPU_texture_create_depth(lamp->size, lamp->size, NULL);
+ if (!lamp->depthtex) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ GPU_texture_bind(lamp->depthtex, 0);
+ GPU_texture_compare_mode(lamp->depthtex, true);
+ GPU_texture_unbind(lamp->depthtex);
+
+ if (!GPU_framebuffer_texture_attach(lamp->fb, lamp->depthtex, 0, 0)) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ /* Shadow color map */
+ lamp->tex = gpu_lamp_create_vsm_shadow_map(lamp->size);
+ if (!lamp->tex) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ if (!GPU_framebuffer_texture_attach(lamp->fb, lamp->tex, 0, 0)) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ if (!GPU_framebuffer_check_valid(lamp->fb, NULL)) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ /* FBO and texture for blurring */
+ lamp->blurfb = GPU_framebuffer_create();
+ if (!lamp->blurfb) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ lamp->blurtex = gpu_lamp_create_vsm_shadow_map(lamp->size * 0.5);
+ if (!lamp->blurtex) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ if (!GPU_framebuffer_texture_attach(lamp->blurfb, lamp->blurtex, 0, 0)) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ /* we need to properly bind to test for completeness */
+ GPU_texture_bind_as_framebuffer(lamp->blurtex);
+
+ if (!GPU_framebuffer_check_valid(lamp->blurfb, NULL)) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ GPU_framebuffer_texture_unbind(lamp->blurfb, lamp->blurtex);
+ }
+ else {
+ lamp->tex = GPU_texture_create_depth(lamp->size, lamp->size, NULL);
+ if (!lamp->tex) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ GPU_texture_bind(lamp->tex, 0);
+ GPU_texture_compare_mode(lamp->tex, true);
+ GPU_texture_unbind(lamp->tex);
+
+ if (!GPU_framebuffer_texture_attach(lamp->fb, lamp->tex, 0, 0)) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+
+ if (!GPU_framebuffer_check_valid(lamp->fb, NULL)) {
+ gpu_lamp_shadow_free(lamp);
+ return lamp;
+ }
+ }
+
+ GPU_framebuffer_restore();
+
+ lamp->shadow_color[0] = la->shdwr;
+ lamp->shadow_color[1] = la->shdwg;
+ lamp->shadow_color[2] = la->shdwb;
+ }
+ else {
+ lamp->shadow_color[0] = 1.0;
+ lamp->shadow_color[1] = 1.0;
+ lamp->shadow_color[2] = 1.0;
+ }
+
+ return lamp;
+}
+
+void GPU_lamp_engine_data_free(LampEngineData *led)
+{
+ for (int i = 0; i < MAX_LAMP_DATA; ++i) {
+ if (led->storage[i]) {
+ MEM_freeN(led->storage[i]);
+ led->storage[i] = NULL;
+ }
+ }
+}
+
+void GPU_lamp_free(Object *ob)
+{
+ GPULamp *lamp;
+ LinkData *link;
+
+ for (link = ob->gpulamp.first; link; link = link->next) {
+ lamp = link->data;
+
+ gpu_lamp_shadow_free(lamp);
+ GPU_lamp_engine_data_free(&lamp->data);
+
+ MEM_freeN(lamp);
+ }
+
+ BLI_freelistN(&ob->gpulamp);
+}
+
+bool GPU_lamp_has_shadow_buffer(GPULamp *lamp)
+{
+ return (!(lamp->scene->gm.flag & GAME_GLSL_NO_SHADOWS) &&
+ !(lamp->scene->gm.flag & GAME_GLSL_NO_LIGHTS) &&
+ lamp->tex && lamp->fb);
+}
+
+void GPU_lamp_update_buffer_mats(GPULamp *lamp)
+{
+ float rangemat[4][4], persmat[4][4];
+
+ /* initshadowbuf */
+ invert_m4_m4(lamp->viewmat, lamp->obmat);
+ normalize_v3(lamp->viewmat[0]);
+ normalize_v3(lamp->viewmat[1]);
+ normalize_v3(lamp->viewmat[2]);
+
+ /* makeshadowbuf */
+ mul_m4_m4m4(persmat, lamp->winmat, lamp->viewmat);
+
+ /* opengl depth buffer is range 0.0..1.0 instead of -1.0..1.0 in blender */
+ unit_m4(rangemat);
+ rangemat[0][0] = 0.5f;
+ rangemat[1][1] = 0.5f;
+ rangemat[2][2] = 0.5f;
+ rangemat[3][0] = 0.5f;
+ rangemat[3][1] = 0.5f;
+ rangemat[3][2] = 0.5f;
+
+ mul_m4_m4m4(lamp->persmat, rangemat, persmat);
+}
+
+void GPU_lamp_shadow_buffer_bind(GPULamp *lamp, float viewmat[4][4], int *winsize, float winmat[4][4])
+{
+ GPU_lamp_update_buffer_mats(lamp);
+
+ /* opengl */
+ glDisable(GL_SCISSOR_TEST);
+ GPU_texture_bind_as_framebuffer(lamp->tex);
+ if (lamp->la->shadowmap_type == LA_SHADMAP_VARIANCE)
+ GPU_shader_bind(GPU_shader_get_builtin_shader(GPU_SHADER_VSM_STORE));
+
+ /* set matrices */
+ copy_m4_m4(viewmat, lamp->viewmat);
+ copy_m4_m4(winmat, lamp->winmat);
+ *winsize = lamp->size;
+}
+
+void GPU_lamp_shadow_buffer_unbind(GPULamp *lamp)
+{
+ if (lamp->la->shadowmap_type == LA_SHADMAP_VARIANCE) {
+ GPU_shader_unbind();
+ GPU_framebuffer_blur(lamp->fb, lamp->tex, lamp->blurfb, lamp->blurtex);
+ }
+
+ GPU_framebuffer_texture_unbind(lamp->fb, lamp->tex);
+ GPU_framebuffer_restore();
+ glEnable(GL_SCISSOR_TEST);
+}
+
+int GPU_lamp_shadow_buffer_type(GPULamp *lamp)
+{
+ return lamp->la->shadowmap_type;
+}
+
+int GPU_lamp_shadow_bind_code(GPULamp *lamp)
+{
+ return lamp->tex ? GPU_texture_opengl_bindcode(lamp->tex) : -1;
+}
+
+float *GPU_lamp_dynpersmat(GPULamp *lamp)
+{
+ return &lamp->dynpersmat[0][0];
+}
+
+int GPU_lamp_shadow_layer(GPULamp *lamp)
+{
+ if (lamp->fb && lamp->tex && (lamp->mode & (LA_LAYER | LA_LAYER_SHADOW)))
+ return lamp->lay;
+ else
+ return -1;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 19:54:30 +0300