void GPU_framebuffer_blur(GPUFrameBuffer *fb, GPUTexture *tex, GPUFrameBuffer *blurfb, GPUTexture *blurtex)
{
float scaleh[2] = {1.0f/GPU_texture_opengl_width(blurtex), 0.0f};
float scalev[2] = {0.0f, 1.0f/GPU_texture_opengl_height(tex)};
GPUShader *blur_shader = GPU_shader_get_builtin_shader(GPU_SHADER_SEP_GAUSSIAN_BLUR);
int scale_uniform, texture_source_uniform;
if (!blur_shader)
return;
scale_uniform = GPU_shader_get_uniform(blur_shader, "ScaleU");
texture_source_uniform = GPU_shader_get_uniform(blur_shader, "textureSource");
/* Blurring horizontally */
/* We do the bind ourselves rather than using GPU_framebuffer_texture_bind() to avoid
* pushing unnecessary matrices onto the OpenGL stack. */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, blurfb->object);
GPU_shader_bind(blur_shader);
GPU_shader_uniform_vector(blur_shader, scale_uniform, 2, 1, (float *)scaleh);
GPU_shader_uniform_texture(blur_shader, texture_source_uniform, tex);
glViewport(0, 0, GPU_texture_opengl_width(blurtex), GPU_texture_opengl_height(blurtex));
/* Peparing to draw quad */
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
GPU_texture_bind(tex, 0);
/* Drawing quad */
glBegin(GL_QUADS);
glTexCoord2d(0, 0); glVertex2f(1, 1);
glTexCoord2d(1, 0); glVertex2f(-1, 1);
glTexCoord2d(1, 1); glVertex2f(-1, -1);
glTexCoord2d(0, 1); glVertex2f(1, -1);
glEnd();
/* Blurring vertically */
glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb->object);
glViewport(0, 0, GPU_texture_opengl_width(tex), GPU_texture_opengl_height(tex));
GPU_shader_uniform_vector(blur_shader, scale_uniform, 2, 1, (float *)scalev);
GPU_shader_uniform_texture(blur_shader, texture_source_uniform, blurtex);
GPU_texture_bind(blurtex, 0);
glBegin(GL_QUADS);
glTexCoord2d(0, 0); glVertex2f(1, 1);
glTexCoord2d(1, 0); glVertex2f(-1, 1);
glTexCoord2d(1, 1); glVertex2f(-1, -1);
glTexCoord2d(0, 1); glVertex2f(1, -1);
glEnd();
GPU_shader_unbind();
}
static void bind_shader(SmokeDomainSettings *sds, GPUShader *shader, GPUTexture *tex_spec,
bool use_fire, const float min[3],
const float ob_sizei[3], const float invsize[3])
{
int invsize_location = GPU_shader_get_uniform(shader, "invsize");
int ob_sizei_location = GPU_shader_get_uniform(shader, "ob_sizei");
int min_location = GPU_shader_get_uniform(shader, "min_location");
int soot_location;
int stepsize_location;
int densityscale_location;
int spec_location, flame_location;
int shadow_location, actcol_location;
if (use_fire) {
spec_location = GPU_shader_get_uniform(shader, "spectrum_texture");
flame_location = GPU_shader_get_uniform(shader, "flame_texture");
}
else {
shadow_location = GPU_shader_get_uniform(shader, "shadow_texture");
actcol_location = GPU_shader_get_uniform(shader, "active_color");
soot_location = GPU_shader_get_uniform(shader, "soot_texture");
stepsize_location = GPU_shader_get_uniform(shader, "step_size");
densityscale_location = GPU_shader_get_uniform(shader, "density_scale");
}
GPU_shader_bind(shader);
if (use_fire) {
GPU_texture_bind(sds->tex_flame, 2);
GPU_shader_uniform_texture(shader, flame_location, sds->tex_flame);
GPU_texture_bind(tex_spec, 3);
GPU_shader_uniform_texture(shader, spec_location, tex_spec);
}
else {
float density_scale = 10.0f;
GPU_shader_uniform_vector(shader, stepsize_location, 1, 1, &sds->dx);
GPU_shader_uniform_vector(shader, densityscale_location, 1, 1, &density_scale);
GPU_texture_bind(sds->tex, 0);
GPU_shader_uniform_texture(shader, soot_location, sds->tex);
GPU_texture_bind(sds->tex_shadow, 1);
GPU_shader_uniform_texture(shader, shadow_location, sds->tex_shadow);
float active_color[3] = { 0.9, 0.9, 0.9 };
if ((sds->active_fields & SM_ACTIVE_COLORS) == 0)
mul_v3_v3(active_color, sds->active_color);
GPU_shader_uniform_vector(shader, actcol_location, 3, 1, active_color);
}
GPU_shader_uniform_vector(shader, min_location, 3, 1, min);
GPU_shader_uniform_vector(shader, ob_sizei_location, 3, 1, ob_sizei);
GPU_shader_uniform_vector(shader, invsize_location, 3, 1, invsize);
}
void GPU_pass_bind(GPUPass *pass, double time, int mipmap)
{
GPUInput *input;
GPUShader *shader = pass->shader;
ListBase *inputs = &pass->inputs;
if (!shader)
return;
GPU_shader_bind(shader);
/* now bind the textures */
for (input=inputs->first; input; input=input->next) {
if (input->ima)
input->tex = GPU_texture_from_blender(input->ima, input->iuser, input->image_isdata, time, mipmap);
else if (input->prv)
input->tex = GPU_texture_from_preview(input->prv, mipmap);
if (input->tex && input->bindtex) {
GPU_texture_bind(input->tex, input->texid);
GPU_shader_uniform_texture(shader, input->shaderloc, input->tex);
}
}
}
void GPU_fx_compositor_XRay_resolve(GPUFX *fx)
{
GPUShader *depth_resolve_shader;
GPU_framebuffer_texture_detach(fx->depth_buffer_xray);
/* attach regular framebuffer */
GPU_framebuffer_texture_attach(fx->gbuffer, fx->depth_buffer, 0, NULL);
/* full screen quad where we will always write to depth buffer */
glPushAttrib(GL_DEPTH_BUFFER_BIT | GL_SCISSOR_BIT);
glDepthFunc(GL_ALWAYS);
/* disable scissor from sculpt if any */
glDisable(GL_SCISSOR_TEST);
/* disable writing to color buffer, it's depth only pass */
glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE);
/* set up quad buffer */
glBindBuffer(GL_ARRAY_BUFFER, fx->vbuffer);
glVertexPointer(2, GL_FLOAT, 0, NULL);
glTexCoordPointer(2, GL_FLOAT, 0, ((GLubyte *)NULL + 8 * sizeof(float)));
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
depth_resolve_shader = GPU_shader_get_builtin_fx_shader(GPU_SHADER_FX_DEPTH_RESOLVE, false);
if (depth_resolve_shader) {
int depth_uniform;
depth_uniform = GPU_shader_get_uniform(depth_resolve_shader, "depthbuffer");
GPU_shader_bind(depth_resolve_shader);
GPU_texture_bind(fx->depth_buffer_xray, 0);
GPU_texture_filter_mode(fx->depth_buffer_xray, false, true);
GPU_shader_uniform_texture(depth_resolve_shader, depth_uniform, fx->depth_buffer_xray);
/* draw */
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/* disable bindings */
GPU_texture_filter_mode(fx->depth_buffer_xray, true, false);
GPU_texture_unbind(fx->depth_buffer_xray);
GPU_shader_unbind();
}
glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
glPopAttrib();
}
void draw_smoke_volume(SmokeDomainSettings *sds, Object *ob,
const float min[3], const float max[3],
const float viewnormal[3])
{
if (!sds->tex || !sds->tex_shadow) {
fprintf(stderr, "Could not allocate 3D texture for volume rendering!\n");
return;
}
const bool use_fire = (sds->active_fields & SM_ACTIVE_FIRE) && sds->tex_flame;
GPUShader *shader = GPU_shader_get_builtin_shader(
(use_fire) ? GPU_SHADER_SMOKE_FIRE : GPU_SHADER_SMOKE);
if (!shader) {
fprintf(stderr, "Unable to create GLSL smoke shader.\n");
return;
}
const float ob_sizei[3] = {
1.0f / fabsf(ob->size[0]),
1.0f / fabsf(ob->size[1]),
1.0f / fabsf(ob->size[2])
};
const float size[3] = { max[0] - min[0], max[1] - min[1], max[2] - min[2] };
const float invsize[3] = { 1.0f / size[0], 1.0f / size[1], 1.0f / size[2] };
#ifdef DEBUG_DRAW_TIME
TIMEIT_START(draw);
#endif
/* setup smoke shader */
int soot_location = GPU_shader_get_uniform(shader, "soot_texture");
int spec_location = GPU_shader_get_uniform(shader, "spectrum_texture");
int shadow_location = GPU_shader_get_uniform(shader, "shadow_texture");
int flame_location = GPU_shader_get_uniform(shader, "flame_texture");
int actcol_location = GPU_shader_get_uniform(shader, "active_color");
int stepsize_location = GPU_shader_get_uniform(shader, "step_size");
int densityscale_location = GPU_shader_get_uniform(shader, "density_scale");
int invsize_location = GPU_shader_get_uniform(shader, "invsize");
int ob_sizei_location = GPU_shader_get_uniform(shader, "ob_sizei");
int min_location = GPU_shader_get_uniform(shader, "min");
GPU_shader_bind(shader);
GPU_texture_bind(sds->tex, 0);
GPU_shader_uniform_texture(shader, soot_location, sds->tex);
GPU_texture_bind(sds->tex_shadow, 1);
GPU_shader_uniform_texture(shader, shadow_location, sds->tex_shadow);
GPUTexture *tex_spec = NULL;
if (use_fire) {
GPU_texture_bind(sds->tex_flame, 2);
GPU_shader_uniform_texture(shader, flame_location, sds->tex_flame);
tex_spec = create_flame_spectrum_texture();
GPU_texture_bind(tex_spec, 3);
GPU_shader_uniform_texture(shader, spec_location, tex_spec);
}
float active_color[3] = { 0.9, 0.9, 0.9 };
float density_scale = 10.0f;
if ((sds->active_fields & SM_ACTIVE_COLORS) == 0)
mul_v3_v3(active_color, sds->active_color);
GPU_shader_uniform_vector(shader, actcol_location, 3, 1, active_color);
GPU_shader_uniform_vector(shader, stepsize_location, 1, 1, &sds->dx);
GPU_shader_uniform_vector(shader, densityscale_location, 1, 1, &density_scale);
GPU_shader_uniform_vector(shader, min_location, 3, 1, min);
GPU_shader_uniform_vector(shader, ob_sizei_location, 3, 1, ob_sizei);
GPU_shader_uniform_vector(shader, invsize_location, 3, 1, invsize);
/* setup slicing information */
const int max_slices = 256;
const int max_points = max_slices * 12;
VolumeSlicer slicer;
copy_v3_v3(slicer.min, min);
copy_v3_v3(slicer.max, max);
copy_v3_v3(slicer.size, size);
slicer.verts = MEM_mallocN(sizeof(float) * 3 * max_points, "smoke_slice_vertices");
const int num_points = create_view_aligned_slices(&slicer, max_slices, viewnormal);
/* setup buffer and draw */
int gl_depth = 0, gl_blend = 0;
glGetBooleanv(GL_BLEND, (GLboolean *)&gl_blend);
glGetBooleanv(GL_DEPTH_TEST, (GLboolean *)&gl_depth);
glEnable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
GLuint vertex_buffer;
glGenBuffers(1, &vertex_buffer);
glBindBuffer(GL_ARRAY_BUFFER, vertex_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 3 * num_points, &slicer.verts[0][0], GL_STATIC_DRAW);
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, NULL);
glDrawArrays(GL_TRIANGLES, 0, num_points);
glDisableClientState(GL_VERTEX_ARRAY);
#ifdef DEBUG_DRAW_TIME
printf("Draw Time: %f\n", (float)TIMEIT_VALUE(draw));
TIMEIT_END(draw);
#endif
/* cleanup */
glBindBuffer(GL_ARRAY_BUFFER, 0);
glDeleteBuffers(1, &vertex_buffer);
GPU_texture_unbind(sds->tex);
GPU_texture_unbind(sds->tex_shadow);
if (use_fire) {
GPU_texture_unbind(sds->tex_flame);
GPU_texture_unbind(tex_spec);
GPU_texture_free(tex_spec);
}
MEM_freeN(slicer.verts);
GPU_shader_unbind();
if (!gl_blend) {
glDisable(GL_BLEND);
}
if (gl_depth) {
glEnable(GL_DEPTH_TEST);
}
}
bool GPU_fx_do_composite_pass(GPUFX *fx, float projmat[4][4], bool is_persp, struct Scene *scene, struct GPUOffScreen *ofs)
{
GPUTexture *src, *target;
int numslots = 0;
float invproj[4][4];
int i;
/* number of passes left. when there are no more passes, the result is passed to the frambuffer */
int passes_left = fx->num_passes;
/* view vectors for the corners of the view frustum. Can be used to recreate the world space position easily */
float viewvecs[3][4] = {
{-1.0f, -1.0f, -1.0f, 1.0f},
{1.0f, -1.0f, -1.0f, 1.0f},
{-1.0f, 1.0f, -1.0f, 1.0f}
};
if (fx->effects == 0)
return false;
/* first, unbind the render-to-texture framebuffer */
GPU_framebuffer_texture_detach(fx->color_buffer);
GPU_framebuffer_texture_detach(fx->depth_buffer);
if (fx->restore_stencil)
glPopAttrib();
src = fx->color_buffer;
target = fx->color_buffer_sec;
/* set up quad buffer */
glVertexPointer(2, GL_FLOAT, 0, fullscreencos);
glTexCoordPointer(2, GL_FLOAT, 0, fullscreenuvs);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
/* full screen FX pass */
/* invert the view matrix */
invert_m4_m4(invproj, projmat);
/* convert the view vectors to view space */
for (i = 0; i < 3; i++) {
mul_m4_v4(invproj, viewvecs[i]);
/* normalized trick see http://www.derschmale.com/2014/01/26/reconstructing-positions-from-the-depth-buffer */
mul_v3_fl(viewvecs[i], 1.0f / viewvecs[i][3]);
if (is_persp)
mul_v3_fl(viewvecs[i], 1.0f / viewvecs[i][2]);
viewvecs[i][3] = 1.0;
}
/* we need to store the differences */
viewvecs[1][0] -= viewvecs[0][0];
viewvecs[1][1] = viewvecs[2][1] - viewvecs[0][1];
/* calculate a depth offset as well */
if (!is_persp) {
float vec_far[] = {-1.0f, -1.0f, 1.0f, 1.0f};
mul_m4_v4(invproj, vec_far);
mul_v3_fl(vec_far, 1.0f / vec_far[3]);
viewvecs[1][2] = vec_far[2] - viewvecs[0][2];
}
/* set invalid color in case shader fails */
glColor3f(1.0, 0.0, 1.0);
glDisable(GL_DEPTH_TEST);
/* ssao pass */
if (fx->effects & GPU_FX_FLAG_SSAO) {
GPUShader *ssao_shader;
ssao_shader = GPU_shader_get_builtin_fx_shader(GPU_SHADER_FX_SSAO, is_persp);
if (ssao_shader) {
const GPUSSAOSettings *fx_ssao = fx->settings.ssao;
int color_uniform, depth_uniform;
int ssao_uniform, ssao_color_uniform, viewvecs_uniform, ssao_sample_params_uniform;
int ssao_jitter_uniform, ssao_concentric_tex;
float ssao_params[4] = {fx_ssao->distance_max, fx_ssao->factor, fx_ssao->attenuation, 0.0f};
float sample_params[4];
sample_params[0] = fx->ssao_sample_count;
/* multiplier so we tile the random texture on screen */
sample_params[2] = fx->gbuffer_dim[0] / 64.0;
sample_params[3] = fx->gbuffer_dim[1] / 64.0;
ssao_uniform = GPU_shader_get_uniform(ssao_shader, "ssao_params");
ssao_color_uniform = GPU_shader_get_uniform(ssao_shader, "ssao_color");
color_uniform = GPU_shader_get_uniform(ssao_shader, "colorbuffer");
depth_uniform = GPU_shader_get_uniform(ssao_shader, "depthbuffer");
viewvecs_uniform = GPU_shader_get_uniform(ssao_shader, "viewvecs");
ssao_sample_params_uniform = GPU_shader_get_uniform(ssao_shader, "ssao_sample_params");
ssao_concentric_tex = GPU_shader_get_uniform(ssao_shader, "ssao_concentric_tex");
ssao_jitter_uniform = GPU_shader_get_uniform(ssao_shader, "jitter_tex");
GPU_shader_bind(ssao_shader);
GPU_shader_uniform_vector(ssao_shader, ssao_uniform, 4, 1, ssao_params);
GPU_shader_uniform_vector(ssao_shader, ssao_color_uniform, 4, 1, fx_ssao->color);
GPU_shader_uniform_vector(ssao_shader, viewvecs_uniform, 4, 3, viewvecs[0]);
GPU_shader_uniform_vector(ssao_shader, ssao_sample_params_uniform, 4, 1, sample_params);
GPU_texture_bind(src, numslots++);
GPU_shader_uniform_texture(ssao_shader, color_uniform, src);
GPU_texture_bind(fx->depth_buffer, numslots++);
GPU_depth_texture_mode(fx->depth_buffer, false, true);
GPU_shader_uniform_texture(ssao_shader, depth_uniform, fx->depth_buffer);
GPU_texture_bind(fx->jitter_buffer, numslots++);
GPU_shader_uniform_texture(ssao_shader, ssao_jitter_uniform, fx->jitter_buffer);
GPU_texture_bind(fx->ssao_concentric_samples_tex, numslots++);
GPU_shader_uniform_texture(ssao_shader, ssao_concentric_tex, fx->ssao_concentric_samples_tex);
/* draw */
gpu_fx_bind_render_target(&passes_left, fx, ofs, target);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/* disable bindings */
GPU_texture_unbind(src);
GPU_depth_texture_mode(fx->depth_buffer, true, false);
GPU_texture_unbind(fx->depth_buffer);
GPU_texture_unbind(fx->jitter_buffer);
GPU_texture_unbind(fx->ssao_concentric_samples_tex);
/* may not be attached, in that case this just returns */
if (target) {
GPU_framebuffer_texture_detach(target);
if (ofs) {
GPU_offscreen_bind(ofs, false);
}
else {
GPU_framebuffer_restore();
}
}
/* swap here, after src/target have been unbound */
SWAP(GPUTexture *, target, src);
numslots = 0;
}
}
/* second pass, dof */
if (fx->effects & GPU_FX_FLAG_DOF) {
const GPUDOFSettings *fx_dof = fx->settings.dof;
GPUShader *dof_shader_pass1, *dof_shader_pass2, *dof_shader_pass3, *dof_shader_pass4, *dof_shader_pass5;
float dof_params[4];
float scale = scene->unit.system ? scene->unit.scale_length : 1.0f;
/* this is factor that converts to the scene scale. focal length and sensor are expressed in mm
* unit.scale_length is how many meters per blender unit we have. We want to convert to blender units though
* because the shader reads coordinates in world space, which is in blender units. */
float scale_camera = 0.001f / scale;
/* we want radius here for the aperture number */
float aperture = 0.5f * scale_camera * fx_dof->focal_length / fx_dof->fstop;
dof_params[0] = aperture * fabsf(scale_camera * fx_dof->focal_length / ((fx_dof->focus_distance / scale) - scale_camera * fx_dof->focal_length));
dof_params[1] = fx_dof->focus_distance / scale;
dof_params[2] = fx->gbuffer_dim[0] / (scale_camera * fx_dof->sensor);
dof_params[3] = 0.0f;
/* DOF effect has many passes but most of them are performed on a texture whose dimensions are 4 times less than the original
* (16 times lower than original screen resolution). Technique used is not very exact but should be fast enough and is based
* on "Practical Post-Process Depth of Field" see http://http.developer.nvidia.com/GPUGems3/gpugems3_ch28.html */
dof_shader_pass1 = GPU_shader_get_builtin_fx_shader(GPU_SHADER_FX_DEPTH_OF_FIELD_PASS_ONE, is_persp);
dof_shader_pass2 = GPU_shader_get_builtin_fx_shader(GPU_SHADER_FX_DEPTH_OF_FIELD_PASS_TWO, is_persp);
dof_shader_pass3 = GPU_shader_get_builtin_fx_shader(GPU_SHADER_FX_DEPTH_OF_FIELD_PASS_THREE, is_persp);
dof_shader_pass4 = GPU_shader_get_builtin_fx_shader(GPU_SHADER_FX_DEPTH_OF_FIELD_PASS_FOUR, is_persp);
dof_shader_pass5 = GPU_shader_get_builtin_fx_shader(GPU_SHADER_FX_DEPTH_OF_FIELD_PASS_FIVE, is_persp);
/* error occured, restore framebuffers and return */
if (!(dof_shader_pass1 && dof_shader_pass2 && dof_shader_pass3 && dof_shader_pass4 && dof_shader_pass5)) {
GPU_framebuffer_texture_unbind(fx->gbuffer, NULL);
GPU_framebuffer_restore();
return false;
}
/* pass first, first level of blur in low res buffer */
{
int invrendertargetdim_uniform, color_uniform, depth_uniform, dof_uniform;
int viewvecs_uniform;
float invrendertargetdim[2] = {1.0f / fx->gbuffer_dim[0], 1.0f / fx->gbuffer_dim[1]};
dof_uniform = GPU_shader_get_uniform(dof_shader_pass1, "dof_params");
invrendertargetdim_uniform = GPU_shader_get_uniform(dof_shader_pass1, "invrendertargetdim");
color_uniform = GPU_shader_get_uniform(dof_shader_pass1, "colorbuffer");
depth_uniform = GPU_shader_get_uniform(dof_shader_pass1, "depthbuffer");
viewvecs_uniform = GPU_shader_get_uniform(dof_shader_pass1, "viewvecs");
GPU_shader_bind(dof_shader_pass1);
GPU_shader_uniform_vector(dof_shader_pass1, dof_uniform, 4, 1, dof_params);
GPU_shader_uniform_vector(dof_shader_pass1, invrendertargetdim_uniform, 2, 1, invrendertargetdim);
GPU_shader_uniform_vector(dof_shader_pass1, viewvecs_uniform, 4, 3, viewvecs[0]);
GPU_texture_bind(src, numslots++);
GPU_shader_uniform_texture(dof_shader_pass1, color_uniform, src);
GPU_texture_bind(fx->depth_buffer, numslots++);
GPU_depth_texture_mode(fx->depth_buffer, false, true);
GPU_shader_uniform_texture(dof_shader_pass1, depth_uniform, fx->depth_buffer);
/* target is the downsampled coc buffer */
GPU_framebuffer_texture_attach(fx->gbuffer, fx->dof_near_coc_buffer, 0, NULL);
/* binding takes care of setting the viewport to the downsampled size */
GPU_texture_bind_as_framebuffer(fx->dof_near_coc_buffer);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/* disable bindings */
GPU_texture_unbind(src);
GPU_depth_texture_mode(fx->depth_buffer, true, false);
GPU_texture_unbind(fx->depth_buffer);
GPU_framebuffer_texture_detach(fx->dof_near_coc_buffer);
numslots = 0;
}
/* second pass, gaussian blur the downsampled image */
{
int invrendertargetdim_uniform, color_uniform, depth_uniform, dof_uniform;
int viewvecs_uniform;
float invrendertargetdim[2] = {1.0f / GPU_texture_opengl_width(fx->dof_near_coc_blurred_buffer),
1.0f / GPU_texture_opengl_height(fx->dof_near_coc_blurred_buffer)};
float tmp = invrendertargetdim[0];
invrendertargetdim[0] = 0.0f;
dof_params[2] = GPU_texture_opengl_width(fx->dof_near_coc_blurred_buffer) / (scale_camera * fx_dof->sensor);
dof_uniform = GPU_shader_get_uniform(dof_shader_pass2, "dof_params");
invrendertargetdim_uniform = GPU_shader_get_uniform(dof_shader_pass2, "invrendertargetdim");
color_uniform = GPU_shader_get_uniform(dof_shader_pass2, "colorbuffer");
depth_uniform = GPU_shader_get_uniform(dof_shader_pass2, "depthbuffer");
viewvecs_uniform = GPU_shader_get_uniform(dof_shader_pass2, "viewvecs");
/* Blurring vertically */
GPU_shader_bind(dof_shader_pass2);
GPU_shader_uniform_vector(dof_shader_pass2, dof_uniform, 4, 1, dof_params);
GPU_shader_uniform_vector(dof_shader_pass2, invrendertargetdim_uniform, 2, 1, invrendertargetdim);
GPU_shader_uniform_vector(dof_shader_pass2, viewvecs_uniform, 4, 3, viewvecs[0]);
GPU_texture_bind(fx->depth_buffer, numslots++);
GPU_depth_texture_mode(fx->depth_buffer, false, true);
GPU_shader_uniform_texture(dof_shader_pass2, depth_uniform, fx->depth_buffer);
GPU_texture_bind(fx->dof_near_coc_buffer, numslots++);
GPU_shader_uniform_texture(dof_shader_pass2, color_uniform, fx->dof_near_coc_buffer);
/* use final buffer as a temp here */
GPU_framebuffer_texture_attach(fx->gbuffer, fx->dof_near_coc_final_buffer, 0, NULL);
/* Drawing quad */
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/* *unbind/detach */
GPU_texture_unbind(fx->dof_near_coc_buffer);
GPU_framebuffer_texture_detach(fx->dof_near_coc_final_buffer);
/* Blurring horizontally */
invrendertargetdim[0] = tmp;
invrendertargetdim[1] = 0.0f;
GPU_shader_uniform_vector(dof_shader_pass2, invrendertargetdim_uniform, 2, 1, invrendertargetdim);
GPU_texture_bind(fx->dof_near_coc_final_buffer, numslots++);
GPU_shader_uniform_texture(dof_shader_pass2, color_uniform, fx->dof_near_coc_final_buffer);
GPU_framebuffer_texture_attach(fx->gbuffer, fx->dof_near_coc_blurred_buffer, 0, NULL);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/* *unbind/detach */
GPU_depth_texture_mode(fx->depth_buffer, true, false);
GPU_texture_unbind(fx->depth_buffer);
GPU_texture_unbind(fx->dof_near_coc_final_buffer);
GPU_framebuffer_texture_detach(fx->dof_near_coc_blurred_buffer);
dof_params[2] = fx->gbuffer_dim[0] / (scale_camera * fx_dof->sensor);
numslots = 0;
}
/* third pass, calculate near coc */
{
int near_coc_downsampled, near_coc_blurred;
near_coc_downsampled = GPU_shader_get_uniform(dof_shader_pass3, "colorbuffer");
near_coc_blurred = GPU_shader_get_uniform(dof_shader_pass3, "blurredcolorbuffer");
GPU_shader_bind(dof_shader_pass3);
GPU_texture_bind(fx->dof_near_coc_buffer, numslots++);
GPU_shader_uniform_texture(dof_shader_pass3, near_coc_downsampled, fx->dof_near_coc_buffer);
GPU_texture_bind(fx->dof_near_coc_blurred_buffer, numslots++);
GPU_shader_uniform_texture(dof_shader_pass3, near_coc_blurred, fx->dof_near_coc_blurred_buffer);
GPU_framebuffer_texture_attach(fx->gbuffer, fx->dof_near_coc_final_buffer, 0, NULL);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/* disable bindings */
GPU_texture_unbind(fx->dof_near_coc_buffer);
GPU_texture_unbind(fx->dof_near_coc_blurred_buffer);
/* unbinding here restores the size to the original */
GPU_framebuffer_texture_detach(fx->dof_near_coc_final_buffer);
numslots = 0;
}
/* fourth pass blur final coc once to eliminate discontinuities */
{
int near_coc_downsampled;
int invrendertargetdim_uniform;
float invrendertargetdim[2] = {1.0f / GPU_texture_opengl_width(fx->dof_near_coc_blurred_buffer),
1.0f / GPU_texture_opengl_height(fx->dof_near_coc_blurred_buffer)};
near_coc_downsampled = GPU_shader_get_uniform(dof_shader_pass4, "colorbuffer");
invrendertargetdim_uniform = GPU_shader_get_uniform(dof_shader_pass4, "invrendertargetdim");
GPU_shader_bind(dof_shader_pass4);
GPU_texture_bind(fx->dof_near_coc_final_buffer, numslots++);
GPU_shader_uniform_texture(dof_shader_pass4, near_coc_downsampled, fx->dof_near_coc_final_buffer);
GPU_shader_uniform_vector(dof_shader_pass4, invrendertargetdim_uniform, 2, 1, invrendertargetdim);
GPU_framebuffer_texture_attach(fx->gbuffer, fx->dof_near_coc_buffer, 0, NULL);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/* disable bindings */
GPU_texture_unbind(fx->dof_near_coc_final_buffer);
/* unbinding here restores the size to the original */
GPU_framebuffer_texture_unbind(fx->gbuffer, fx->dof_near_coc_buffer);
GPU_framebuffer_texture_detach(fx->dof_near_coc_buffer);
numslots = 0;
}
/* final pass, merge blurred layers according to final calculated coc */
{
int medium_blurred_uniform, high_blurred_uniform, original_uniform, depth_uniform, dof_uniform;
int invrendertargetdim_uniform, viewvecs_uniform;
float invrendertargetdim[2] = {1.0f / fx->gbuffer_dim[0], 1.0f / fx->gbuffer_dim[1]};
medium_blurred_uniform = GPU_shader_get_uniform(dof_shader_pass5, "mblurredcolorbuffer");
high_blurred_uniform = GPU_shader_get_uniform(dof_shader_pass5, "blurredcolorbuffer");
dof_uniform = GPU_shader_get_uniform(dof_shader_pass5, "dof_params");
invrendertargetdim_uniform = GPU_shader_get_uniform(dof_shader_pass5, "invrendertargetdim");
original_uniform = GPU_shader_get_uniform(dof_shader_pass5, "colorbuffer");
depth_uniform = GPU_shader_get_uniform(dof_shader_pass5, "depthbuffer");
viewvecs_uniform = GPU_shader_get_uniform(dof_shader_pass5, "viewvecs");
GPU_shader_bind(dof_shader_pass5);
GPU_shader_uniform_vector(dof_shader_pass5, dof_uniform, 4, 1, dof_params);
GPU_shader_uniform_vector(dof_shader_pass5, invrendertargetdim_uniform, 2, 1, invrendertargetdim);
GPU_shader_uniform_vector(dof_shader_pass5, viewvecs_uniform, 4, 3, viewvecs[0]);
GPU_texture_bind(src, numslots++);
GPU_shader_uniform_texture(dof_shader_pass5, original_uniform, src);
GPU_texture_bind(fx->dof_near_coc_blurred_buffer, numslots++);
GPU_shader_uniform_texture(dof_shader_pass5, high_blurred_uniform, fx->dof_near_coc_blurred_buffer);
GPU_texture_bind(fx->dof_near_coc_buffer, numslots++);
GPU_shader_uniform_texture(dof_shader_pass5, medium_blurred_uniform, fx->dof_near_coc_buffer);
GPU_texture_bind(fx->depth_buffer, numslots++);
GPU_depth_texture_mode(fx->depth_buffer, false, true);
GPU_shader_uniform_texture(dof_shader_pass5, depth_uniform, fx->depth_buffer);
/* if this is the last pass, prepare for rendering on the frambuffer */
gpu_fx_bind_render_target(&passes_left, fx, ofs, target);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
/* disable bindings */
GPU_texture_unbind(fx->dof_near_coc_buffer);
GPU_texture_unbind(fx->dof_near_coc_blurred_buffer);
GPU_texture_unbind(src);
GPU_depth_texture_mode(fx->depth_buffer, true, false);
GPU_texture_unbind(fx->depth_buffer);
/* may not be attached, in that case this just returns */
if (target) {
GPU_framebuffer_texture_detach(target);
if (ofs) {
GPU_offscreen_bind(ofs, false);
}
else {
GPU_framebuffer_restore();
}
}
SWAP(GPUTexture *, target, src);
numslots = 0;
}
}
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
GPU_shader_unbind();
return true;
}