1 files changed, 127 insertions, 25 deletions

diff --git a/drivers/gles2/rasterizer_scene_gles2.cpp b/drivers/gles2/rasterizer_scene_gles2.cpp
index 268b0f1c90..ea29af7d9e 100644
--- a/drivers/gles2/rasterizer_scene_gles2.cpp
+++ b/drivers/gles2/rasterizer_scene_gles2.cpp
@@ -36,6 +36,7 @@
 #include "core/project_settings.h"
 #include "core/vmap.h"
 #include "rasterizer_canvas_gles2.h"
+#include "servers/camera/camera_feed.h"
 #include "servers/visual/visual_server_raster.h"
 
 #ifndef GLES_OVER_GL
@@ -769,6 +770,13 @@ void RasterizerSceneGLES2::environment_set_ambient_light(RID p_env, const Color
 	env->ambient_sky_contribution = p_sky_contribution;
 }
 
+void RasterizerSceneGLES2::environment_set_camera_feed_id(RID p_env, int p_camera_feed_id) {
+	Environment *env = environment_owner.getornull(p_env);
+	ERR_FAIL_COND(!env);
+
+	env->camera_feed_id = p_camera_feed_id;
+}
+
 void RasterizerSceneGLES2::environment_set_dof_blur_far(RID p_env, bool p_enable, float p_distance, float p_transition, float p_amount, VS::EnvironmentDOFBlurQuality p_quality) {
 	Environment *env = environment_owner.getornull(p_env);
 	ERR_FAIL_COND(!env);
@@ -1027,6 +1035,7 @@ void RasterizerSceneGLES2::_add_geometry_with_material(RasterizerStorageGLES2::G
 	e->light_index = RenderList::MAX_LIGHTS;
 	e->use_accum_ptr = &e->use_accum;
 	e->instancing = (e->instance->base_type == VS::INSTANCE_MULTIMESH) ? 1 : 0;
+	e->front_facing = false;
 
 	if (e->geometry->last_pass != render_pass) {
 		e->geometry->last_pass = render_pass;
@@ -1046,6 +1055,10 @@ void RasterizerSceneGLES2::_add_geometry_with_material(RasterizerStorageGLES2::G
 
 	e->material_index = e->material->index;
 
+	if (mirror) {
+		e->front_facing = true;
+	}
+
 	e->refprobe_0_index = RenderList::MAX_REFLECTION_PROBES; //refprobe disabled by default
 	e->refprobe_1_index = RenderList::MAX_REFLECTION_PROBES; //refprobe disabled by default
 
@@ -1257,7 +1270,29 @@ static const GLenum gl_primitive[] = {
 	GL_TRIANGLE_FAN
 };
 
-bool RasterizerSceneGLES2::_setup_material(RasterizerStorageGLES2::Material *p_material, bool p_reverse_cull, bool p_alpha_pass, Size2i p_skeleton_tex_size) {
+void RasterizerSceneGLES2::_set_cull(bool p_front, bool p_disabled, bool p_reverse_cull) {
+
+	bool front = p_front;
+	if (p_reverse_cull)
+		front = !front;
+
+	if (p_disabled != state.cull_disabled) {
+		if (p_disabled)
+			glDisable(GL_CULL_FACE);
+		else
+			glEnable(GL_CULL_FACE);
+
+		state.cull_disabled = p_disabled;
+	}
+
+	if (front != state.cull_front) {
+
+		glCullFace(front ? GL_FRONT : GL_BACK);
+		state.cull_front = front;
+	}
+}
+
+bool RasterizerSceneGLES2::_setup_material(RasterizerStorageGLES2::Material *p_material, bool p_alpha_pass, Size2i p_skeleton_tex_size) {
 
 	// material parameters
 
@@ -1295,21 +1330,6 @@ bool RasterizerSceneGLES2::_setup_material(RasterizerStorageGLES2::Material *p_m
 		} break;
 	}
 
-	switch (p_material->shader->spatial.cull_mode) {
-		case RasterizerStorageGLES2::Shader::Spatial::CULL_MODE_DISABLED: {
-			glDisable(GL_CULL_FACE);
-		} break;
-
-		case RasterizerStorageGLES2::Shader::Spatial::CULL_MODE_BACK: {
-			glEnable(GL_CULL_FACE);
-			glCullFace(p_reverse_cull ? GL_FRONT : GL_BACK);
-		} break;
-		case RasterizerStorageGLES2::Shader::Spatial::CULL_MODE_FRONT: {
-			glEnable(GL_CULL_FACE);
-			glCullFace(p_reverse_cull ? GL_BACK : GL_FRONT);
-		} break;
-	}
-
 	int tc = p_material->textures.size();
 	const Pair<StringName, RID> *textures = p_material->textures.ptr();
 
@@ -2202,6 +2222,11 @@ void RasterizerSceneGLES2::_render_render_list(RenderList::Element **p_elements,
 
 	int prev_blend_mode = -2; //will always catch the first go
 
+	state.cull_front = false;
+	state.cull_disabled = false;
+	glCullFace(GL_BACK);
+	glEnable(GL_CULL_FACE);
+
 	if (p_alpha_pass) {
 		glEnable(GL_BLEND);
 	} else {
@@ -2244,7 +2269,7 @@ void RasterizerSceneGLES2::_render_render_list(RenderList::Element **p_elements,
 		bool rebind_reflection = false;
 		bool rebind_lightmap = false;
 
-		if (!p_shadow) {
+		if (!p_shadow && material->shader) {
 
 			bool unshaded = material->shader->spatial.unshaded;
 
@@ -2264,7 +2289,7 @@ void RasterizerSceneGLES2::_render_render_list(RenderList::Element **p_elements,
 
 			bool depth_prepass = false;
 
-			if (!p_alpha_pass && material->shader && material->shader->spatial.depth_draw_mode == RasterizerStorageGLES2::Shader::Spatial::DEPTH_DRAW_ALPHA_PREPASS) {
+			if (!p_alpha_pass && material->shader->spatial.depth_draw_mode == RasterizerStorageGLES2::Shader::Spatial::DEPTH_DRAW_ALPHA_PREPASS) {
 				depth_prepass = true;
 			}
 
@@ -2441,12 +2466,14 @@ void RasterizerSceneGLES2::_render_render_list(RenderList::Element **p_elements,
 		if (rebind || material != prev_material) {
 
 			storage->info.render.material_switch_count++;
-			shader_rebind = _setup_material(material, p_reverse_cull, p_alpha_pass, Size2i(skeleton ? skeleton->size * 3 : 0, 0));
+			shader_rebind = _setup_material(material, p_alpha_pass, Size2i(skeleton ? skeleton->size * 3 : 0, 0));
 			if (shader_rebind) {
 				storage->info.render.shader_rebind_count++;
 			}
 		}
 
+		_set_cull(e->front_facing, material->shader->spatial.cull_mode == RasterizerStorageGLES2::Shader::Spatial::CULL_MODE_DISABLED, p_reverse_cull);
+
 		if (i == 0 || shader_rebind) { //first time must rebind
 
 			if (p_shadow) {
@@ -2695,7 +2722,8 @@ void RasterizerSceneGLES2::render_scene(const Transform &p_cam_transform, const
 	Environment *env = NULL;
 
 	int viewport_width, viewport_height;
-	int viewport_x, viewport_y;
+	int viewport_x = 0;
+	int viewport_y = 0;
 	bool probe_interior = false;
 	bool reverse_cull = false;
 
@@ -2823,6 +2851,7 @@ void RasterizerSceneGLES2::render_scene(const Transform &p_cam_transform, const
 	// clear color
 
 	Color clear_color(0, 0, 0, 1);
+	Ref<CameraFeed> feed;
 
 	if (storage->frame.current_rt && storage->frame.current_rt->flags[RasterizerStorage::RENDER_TARGET_TRANSPARENT]) {
 		clear_color = Color(0, 0, 0, 0);
@@ -2835,6 +2864,9 @@ void RasterizerSceneGLES2::render_scene(const Transform &p_cam_transform, const
 	} else if (env->bg_mode == VS::ENV_BG_CANVAS || env->bg_mode == VS::ENV_BG_COLOR || env->bg_mode == VS::ENV_BG_COLOR_SKY) {
 		clear_color = env->bg_color;
 		storage->frame.clear_request = false;
+	} else if (env->bg_mode == VS::ENV_BG_CAMERA_FEED) {
+		feed = CameraServer::get_singleton()->get_feed_by_id(env->camera_feed_id);
+		storage->frame.clear_request = false;
 	} else {
 		storage->frame.clear_request = false;
 	}
@@ -2871,7 +2903,66 @@ void RasterizerSceneGLES2::render_scene(const Transform &p_cam_transform, const
 					env_radiance_tex = sky->radiance;
 				}
 			} break;
+			case VS::ENV_BG_CAMERA_FEED: {
+				if (feed.is_valid() && (feed->get_base_width() > 0) && (feed->get_base_height() > 0)) {
+					// copy our camera feed to our background
+
+					glDisable(GL_BLEND);
+					glDepthMask(GL_FALSE);
+					glDisable(GL_DEPTH_TEST);
+					glDisable(GL_CULL_FACE);
+
+					storage->shaders.copy.set_conditional(CopyShaderGLES2::USE_NO_ALPHA, true);
+					storage->shaders.copy.set_conditional(CopyShaderGLES2::USE_DISPLAY_TRANSFORM, true);
+
+					if (feed->get_datatype() == CameraFeed::FEED_RGB) {
+						RID camera_RGBA = feed->get_texture(CameraServer::FEED_RGBA_IMAGE);
+
+						VS::get_singleton()->texture_bind(camera_RGBA, 0);
+
+					} else if (feed->get_datatype() == CameraFeed::FEED_YCBCR) {
+						RID camera_YCbCr = feed->get_texture(CameraServer::FEED_YCBCR_IMAGE);
+
+						VS::get_singleton()->texture_bind(camera_YCbCr, 0);
+
+						storage->shaders.copy.set_conditional(CopyShaderGLES2::YCBCR_TO_RGB, true);
+
+					} else if (feed->get_datatype() == CameraFeed::FEED_YCBCR_SEP) {
+						RID camera_Y = feed->get_texture(CameraServer::FEED_Y_IMAGE);
+						RID camera_CbCr = feed->get_texture(CameraServer::FEED_CBCR_IMAGE);
 
+						VS::get_singleton()->texture_bind(camera_Y, 0);
+						VS::get_singleton()->texture_bind(camera_CbCr, 1);
+
+						storage->shaders.copy.set_conditional(CopyShaderGLES2::SEP_CBCR_TEXTURE, true);
+						storage->shaders.copy.set_conditional(CopyShaderGLES2::YCBCR_TO_RGB, true);
+					};
+
+					storage->shaders.copy.bind();
+					storage->shaders.copy.set_uniform(CopyShaderGLES2::DISPLAY_TRANSFORM, feed->get_transform());
+
+					storage->bind_quad_array();
+					glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+					glDisableVertexAttribArray(VS::ARRAY_VERTEX);
+					glDisableVertexAttribArray(VS::ARRAY_TEX_UV);
+					glBindBuffer(GL_ARRAY_BUFFER, 0);
+
+					// turn off everything used
+					storage->shaders.copy.set_conditional(CopyShaderGLES2::SEP_CBCR_TEXTURE, false);
+					storage->shaders.copy.set_conditional(CopyShaderGLES2::YCBCR_TO_RGB, false);
+					storage->shaders.copy.set_conditional(CopyShaderGLES2::USE_NO_ALPHA, false);
+					storage->shaders.copy.set_conditional(CopyShaderGLES2::USE_DISPLAY_TRANSFORM, false);
+
+					//restore
+					glEnable(GL_BLEND);
+					glDepthMask(GL_TRUE);
+					glEnable(GL_DEPTH_TEST);
+					glEnable(GL_CULL_FACE);
+				} else {
+					// don't have a feed, just show greenscreen :)
+					clear_color = Color(0.0, 1.0, 0.0, 1.0);
+				}
+			} break;
 			default: {
 				// FIXME: implement other background modes
 			} break;
@@ -2899,7 +2990,7 @@ void RasterizerSceneGLES2::render_scene(const Transform &p_cam_transform, const
 	if (storage->frame.current_rt && state.used_screen_texture) {
 		//copy screen texture
 
-		if (storage->frame.current_rt && storage->frame.current_rt->multisample_active) {
+		if (storage->frame.current_rt->multisample_active) {
 			// Resolve framebuffer to front buffer before copying
 #ifdef GLES_OVER_GL
 
@@ -2911,14 +3002,16 @@ void RasterizerSceneGLES2::render_scene(const Transform &p_cam_transform, const
 			glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
 			glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
 #elif IPHONE_ENABLED
+
 			glBindFramebuffer(GL_READ_FRAMEBUFFER, storage->frame.current_rt->multisample_fbo);
 			glBindFramebuffer(GL_DRAW_FRAMEBUFFER, storage->frame.current_rt->fbo);
 			glResolveMultisampleFramebufferAPPLE();
 
 			glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
 			glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
-#else
-			// In GLES2 Blit is not available, so just copy color texture manually
+#elif ANDROID_ENABLED
+
+			// In GLES2 AndroidBlit is not available, so just copy color texture manually
 			_copy_texture_to_front_buffer(storage->frame.current_rt->multisample_color);
 #endif
 		}
@@ -2952,8 +3045,17 @@ void RasterizerSceneGLES2::render_scene(const Transform &p_cam_transform, const
 
 		glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
 		glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
-#else
-		// In GLES2 Blit is not available, so just copy color texture manually
+#elif IPHONE_ENABLED
+
+		glBindFramebuffer(GL_READ_FRAMEBUFFER, storage->frame.current_rt->multisample_fbo);
+		glBindFramebuffer(GL_DRAW_FRAMEBUFFER, storage->frame.current_rt->fbo);
+		glResolveMultisampleFramebufferAPPLE();
+
+		glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
+		glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+#elif ANDROID_ENABLED
+
+		// In GLES2 Android Blit is not available, so just copy color texture manually
 		_copy_texture_to_front_buffer(storage->frame.current_rt->multisample_color);
 #endif
 	}