diff options
Diffstat (limited to 'source/blender/draw/intern/draw_curves.cc')
| -rw-r--r-- | source/blender/draw/intern/draw_curves.cc | 236 |
1 files changed, 134 insertions, 102 deletions
diff --git a/source/blender/draw/intern/draw_curves.cc b/source/blender/draw/intern/draw_curves.cc index 233af08c363..a61769e7a63 100644 --- a/source/blender/draw/intern/draw_curves.cc +++ b/source/blender/draw/intern/draw_curves.cc @@ -33,25 +33,17 @@ #include "draw_manager.h" #include "draw_shader.h" -#ifndef __APPLE__ -# define USE_TRANSFORM_FEEDBACK -# define USE_COMPUTE_SHADERS -#endif - BLI_INLINE eParticleRefineShaderType drw_curves_shader_type_get() { -#ifdef USE_COMPUTE_SHADERS if (GPU_compute_shader_support() && GPU_shader_storage_buffer_objects_support()) { return PART_REFINE_SHADER_COMPUTE; } -#endif -#ifdef USE_TRANSFORM_FEEDBACK - return PART_REFINE_SHADER_TRANSFORM_FEEDBACK; -#endif + if (GPU_transform_feedback_support()) { + return PART_REFINE_SHADER_TRANSFORM_FEEDBACK; + } return PART_REFINE_SHADER_TRANSFORM_FEEDBACK_WORKAROUND; } -#ifndef USE_TRANSFORM_FEEDBACK struct CurvesEvalCall { struct CurvesEvalCall *next; GPUVertBuf *vbo; @@ -63,7 +55,6 @@ static CurvesEvalCall *g_tf_calls = nullptr; static int g_tf_id_offset; static int g_tf_target_width; static int g_tf_target_height; -#endif static GPUVertBuf *g_dummy_vbo = nullptr; static GPUTexture *g_dummy_texture = nullptr; @@ -106,18 +97,20 @@ void DRW_curves_init(DRWData *drw_data) CurvesUniformBufPool *pool = drw_data->curves_ubos; pool->reset(); -#if defined(USE_TRANSFORM_FEEDBACK) || defined(USE_COMPUTE_SHADERS) - g_tf_pass = DRW_pass_create("Update Curves Pass", (DRWState)0); -#else - g_tf_pass = DRW_pass_create("Update Curves Pass", DRW_STATE_WRITE_COLOR); -#endif + if (GPU_transform_feedback_support() || GPU_compute_shader_support()) { + g_tf_pass = DRW_pass_create("Update Curves Pass", (DRWState)0); + } + else { + g_tf_pass = DRW_pass_create("Update Curves Pass", DRW_STATE_WRITE_COLOR); + } if (g_dummy_vbo == nullptr) { /* initialize vertex format */ GPUVertFormat format = {0}; uint dummy_id = GPU_vertformat_attr_add(&format, "dummy", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); - g_dummy_vbo = GPU_vertbuf_create_with_format(&format); + g_dummy_vbo = GPU_vertbuf_create_with_format_ex( + &format, GPU_USAGE_STATIC | GPU_USAGE_FLAG_BUFFER_TEXTURE_ONLY); const float vert[4] = {0.0f, 0.0f, 0.0f, 0.0f}; GPU_vertbuf_data_alloc(g_dummy_vbo, 1); @@ -201,21 +194,24 @@ static void drw_curves_cache_update_transform_feedback(CurvesEvalCache *cache, { GPUShader *tf_shader = curves_eval_shader_get(CURVES_EVAL_CATMULL_ROM); -#ifdef USE_TRANSFORM_FEEDBACK - DRWShadingGroup *tf_shgrp = DRW_shgroup_transform_feedback_create(tf_shader, g_tf_pass, vbo); -#else - DRWShadingGroup *tf_shgrp = DRW_shgroup_create(tf_shader, g_tf_pass); - - CurvesEvalCall *pr_call = MEM_new<CurvesEvalCall>(__func__); - pr_call->next = g_tf_calls; - pr_call->vbo = vbo; - pr_call->shgrp = tf_shgrp; - pr_call->vert_len = final_points_len; - g_tf_calls = pr_call; - DRW_shgroup_uniform_int(tf_shgrp, "targetHeight", &g_tf_target_height, 1); - DRW_shgroup_uniform_int(tf_shgrp, "targetWidth", &g_tf_target_width, 1); - DRW_shgroup_uniform_int(tf_shgrp, "idOffset", &g_tf_id_offset, 1); -#endif + DRWShadingGroup *tf_shgrp = nullptr; + if (GPU_transform_feedback_support()) { + tf_shgrp = DRW_shgroup_transform_feedback_create(tf_shader, g_tf_pass, vbo); + } + else { + tf_shgrp = DRW_shgroup_create(tf_shader, g_tf_pass); + + CurvesEvalCall *pr_call = MEM_new<CurvesEvalCall>(__func__); + pr_call->next = g_tf_calls; + pr_call->vbo = vbo; + pr_call->shgrp = tf_shgrp; + pr_call->vert_len = final_points_len; + g_tf_calls = pr_call; + DRW_shgroup_uniform_int(tf_shgrp, "targetHeight", &g_tf_target_height, 1); + DRW_shgroup_uniform_int(tf_shgrp, "targetWidth", &g_tf_target_width, 1); + DRW_shgroup_uniform_int(tf_shgrp, "idOffset", &g_tf_id_offset, 1); + } + BLI_assert(tf_shgrp != nullptr); drw_curves_cache_shgrp_attach_resources(tf_shgrp, cache, tex, subdiv); DRW_shgroup_call_procedural_points(tf_shgrp, nullptr, final_points_len); @@ -411,82 +407,118 @@ void DRW_curves_update() /* Update legacy hair too, to avoid verbosity in callers. */ DRW_hair_update(); -#ifndef USE_TRANSFORM_FEEDBACK - /** - * Workaround to transform feedback not working on mac. - * On some system it crashes (see T58489) and on some other it renders garbage (see T60171). - * - * So instead of using transform feedback we render to a texture, - * read back the result to system memory and re-upload as VBO data. - * It is really not ideal performance wise, but it is the simplest - * and the most local workaround that still uses the power of the GPU. - */ - - if (g_tf_calls == nullptr) { - return; - } + if (!GPU_transform_feedback_support()) { + /** + * Workaround to transform feedback not working on mac. + * On some system it crashes (see T58489) and on some other it renders garbage (see T60171). + * + * So instead of using transform feedback we render to a texture, + * read back the result to system memory and re-upload as VBO data. + * It is really not ideal performance wise, but it is the simplest + * and the most local workaround that still uses the power of the GPU. + */ + + if (g_tf_calls == nullptr) { + return; + } - /* Search ideal buffer size. */ - uint max_size = 0; - for (CurvesEvalCall *pr_call = g_tf_calls; pr_call; pr_call = pr_call->next) { - max_size = max_ii(max_size, pr_call->vert_len); - } + /* Search ideal buffer size. */ + uint max_size = 0; + for (CurvesEvalCall *pr_call = g_tf_calls; pr_call; pr_call = pr_call->next) { + max_size = max_ii(max_size, pr_call->vert_len); + } + + /* Create target Texture / Frame-buffer */ + /* Don't use max size as it can be really heavy and fail. + * Do chunks of maximum 2048 * 2048 hair points. */ + int width = 2048; + int height = min_ii(width, 1 + max_size / width); + GPUTexture *tex = DRW_texture_pool_query_2d( + width, height, GPU_RGBA32F, (DrawEngineType *)DRW_curves_update); + g_tf_target_height = height; + g_tf_target_width = width; + + GPUFrameBuffer *fb = nullptr; + GPU_framebuffer_ensure_config(&fb, + { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(tex), + }); + + float *data = static_cast<float *>( + MEM_mallocN(sizeof(float[4]) * width * height, "tf fallback buffer")); + + GPU_framebuffer_bind(fb); + while (g_tf_calls != nullptr) { + CurvesEvalCall *pr_call = g_tf_calls; + g_tf_calls = g_tf_calls->next; + + g_tf_id_offset = 0; + while (pr_call->vert_len > 0) { + int max_read_px_len = min_ii(width * height, pr_call->vert_len); + + DRW_draw_pass_subset(g_tf_pass, pr_call->shgrp, pr_call->shgrp); + /* Read back result to main memory. */ + GPU_framebuffer_read_color(fb, 0, 0, width, height, 4, 0, GPU_DATA_FLOAT, data); + /* Upload back to VBO. */ + GPU_vertbuf_use(pr_call->vbo); + GPU_vertbuf_update_sub(pr_call->vbo, + sizeof(float[4]) * g_tf_id_offset, + sizeof(float[4]) * max_read_px_len, + data); + + g_tf_id_offset += max_read_px_len; + pr_call->vert_len -= max_read_px_len; + } - /* Create target Texture / Frame-buffer */ - /* Don't use max size as it can be really heavy and fail. - * Do chunks of maximum 2048 * 2048 hair points. */ - int width = 2048; - int height = min_ii(width, 1 + max_size / width); - GPUTexture *tex = DRW_texture_pool_query_2d( - width, height, GPU_RGBA32F, (DrawEngineType *)DRW_curves_update); - g_tf_target_height = height; - g_tf_target_width = width; - - GPUFrameBuffer *fb = nullptr; - GPU_framebuffer_ensure_config(&fb, - { - GPU_ATTACHMENT_NONE, - GPU_ATTACHMENT_TEXTURE(tex), - }); - - float *data = static_cast<float *>( - MEM_mallocN(sizeof(float[4]) * width * height, "tf fallback buffer")); - - GPU_framebuffer_bind(fb); - while (g_tf_calls != nullptr) { - CurvesEvalCall *pr_call = g_tf_calls; - g_tf_calls = g_tf_calls->next; - - g_tf_id_offset = 0; - while (pr_call->vert_len > 0) { - int max_read_px_len = min_ii(width * height, pr_call->vert_len); - - DRW_draw_pass_subset(g_tf_pass, pr_call->shgrp, pr_call->shgrp); - /* Read back result to main memory. */ - GPU_framebuffer_read_color(fb, 0, 0, width, height, 4, 0, GPU_DATA_FLOAT, data); - /* Upload back to VBO. */ - GPU_vertbuf_use(pr_call->vbo); - GPU_vertbuf_update_sub(pr_call->vbo, - sizeof(float[4]) * g_tf_id_offset, - sizeof(float[4]) * max_read_px_len, - data); - - g_tf_id_offset += max_read_px_len; - pr_call->vert_len -= max_read_px_len; + MEM_freeN(pr_call); } - MEM_freeN(pr_call); + MEM_freeN(data); + GPU_framebuffer_free(fb); } + else { + /* NOTE(Metal): If compute is not supported, bind a temporary frame-buffer to avoid + * side-effects from rendering in the active buffer. + * We also need to guarantee that a Frame-buffer is active to perform any rendering work, + * even if there is no output */ + GPUFrameBuffer *temp_fb = nullptr; + GPUFrameBuffer *prev_fb = nullptr; + if (GPU_type_matches_ex(GPU_DEVICE_ANY, GPU_OS_MAC, GPU_DRIVER_ANY, GPU_BACKEND_METAL)) { + if (!GPU_compute_shader_support()) { + prev_fb = GPU_framebuffer_active_get(); + char errorOut[256]; + /* if the frame-buffer is invalid we need a dummy frame-buffer to be bound. */ + if (!GPU_framebuffer_check_valid(prev_fb, errorOut)) { + int width = 64; + int height = 64; + GPUTexture *tex = DRW_texture_pool_query_2d( + width, height, GPU_DEPTH_COMPONENT32F, (DrawEngineType *)DRW_hair_update); + g_tf_target_height = height; + g_tf_target_width = width; + + GPU_framebuffer_ensure_config(&temp_fb, {GPU_ATTACHMENT_TEXTURE(tex)}); + + GPU_framebuffer_bind(temp_fb); + } + } + } - MEM_freeN(data); - GPU_framebuffer_free(fb); -#else - /* Just render the pass when using compute shaders or transform feedback. */ - DRW_draw_pass(g_tf_pass); - if (drw_curves_shader_type_get() == PART_REFINE_SHADER_COMPUTE) { - GPU_memory_barrier(GPU_BARRIER_SHADER_STORAGE); + /* Just render the pass when using compute shaders or transform feedback. */ + DRW_draw_pass(g_tf_pass); + if (drw_curves_shader_type_get() == PART_REFINE_SHADER_COMPUTE) { + GPU_memory_barrier(GPU_BARRIER_SHADER_STORAGE); + } + + /* Release temporary frame-buffer. */ + if (temp_fb != nullptr) { + GPU_framebuffer_free(temp_fb); + } + /* Rebind existing frame-buffer */ + if (prev_fb != nullptr) { + GPU_framebuffer_bind(prev_fb); + } } -#endif } void DRW_curves_free() |