{"id":26938,"url":"https://patchwork.libcamera.org/api/1.1/patches/26938/?format=json","web_url":"https://patchwork.libcamera.org/patch/26938/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/1.1/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260618122245.946138-6-bryan.odonoghue@linaro.org>","date":"2026-06-18T12:22:18","name":"[05/30] libcamera: software_isp: gpu_pipeline_shader_pass: Add base class GpuPipelineShaderPass","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"2c4461f494c8e422ecc79e36045cc3fcd2872e86","submitter":{"id":175,"url":"https://patchwork.libcamera.org/api/1.1/people/175/?format=json","name":"Bryan O'Donoghue","email":"bryan.odonoghue@linaro.org"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/26938/mbox/","series":[{"id":6005,"url":"https://patchwork.libcamera.org/api/1.1/series/6005/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=6005","date":"2026-06-18T12:22:13","name":"RFC/RFT: gpuisp: Multipass with speed optimisations on top","version":1,"mbox":"https://patchwork.libcamera.org/series/6005/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/26938/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/26938/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id E5ABBC3303\n\tfor ;\n\tThu, 18 Jun 2026 12:23:11 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id CA52C62B40;\n\tThu, 18 Jun 2026 14:23:08 +0200 (CEST)","from mail-wm1-x32e.google.com (mail-wm1-x32e.google.com\n\t[IPv6:2a00:1450:4864:20::32e])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 62AF3629E3\n\tfor ;\n\tThu, 18 Jun 2026 14:23:01 +0200 (CEST)","by mail-wm1-x32e.google.com with SMTP id\n\t5b1f17b1804b1-490ae94a89eso6312135e9.1\n\tfor ;\n\tThu, 18 Jun 2026 05:23:01 -0700 (PDT)","from inspiron14p-linux ([109.76.144.236])\n\tby smtp.gmail.com with ESMTPSA id\n\t5b1f17b1804b1-4922fa3a4easm275198015e9.3.2026.06.18.05.23.00\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tThu, 18 Jun 2026 05:23:00 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com; 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\n\tThu, 18 Jun 2026 05:23:00 -0700 (PDT)","From":"Bryan O'Donoghue ","To":"libcamera-devel@lists.libcamera.org","Cc":"bryan.odonoghue@linaro.org,\n\tpavel@ucw.cz","Subject":"[PATCH 05/30] libcamera: software_isp: gpu_pipeline_shader_pass: Add\n\tbase class GpuPipelineShaderPass","Date":"Thu, 18 Jun 2026 13:22:18 +0100","Message-ID":"<20260618122245.946138-6-bryan.odonoghue@linaro.org>","X-Mailer":"git-send-email 2.54.0","In-Reply-To":"<20260618122245.946138-1-bryan.odonoghue@linaro.org>","References":"<20260618122245.946138-1-bryan.odonoghue@linaro.org>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"Signed-off-by: Bryan O'Donoghue \n---\n .../software_isp/gpu_pipeline_shader_pass.cpp | 74 +++++++++++++++++\n .../software_isp/gpu_pipeline_shader_pass.h | 83 +++++++++++++++++++\n src/libcamera/software_isp/meson.build | 1 +\n 3 files changed, 158 insertions(+)\n create mode 100644 src/libcamera/software_isp/gpu_pipeline_shader_pass.cpp\n create mode 100644 src/libcamera/software_isp/gpu_pipeline_shader_pass.h","diff":"diff --git a/src/libcamera/software_isp/gpu_pipeline_shader_pass.cpp b/src/libcamera/software_isp/gpu_pipeline_shader_pass.cpp\nnew file mode 100644\nindex 000000000..669a1c1b6\n--- /dev/null\n+++ b/src/libcamera/software_isp/gpu_pipeline_shader_pass.cpp\n@@ -0,0 +1,74 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2026, Linaro Ltd\n+ *\n+ * Simple software ISP implementation\n+ */\n+\n+#include \n+#include \n+#include \n+#include \n+#include \n+\n+#include \n+#include \n+#include \n+\n+#include \n+#include \n+#include \n+\n+#include \"libcamera/internal/framebuffer.h\"\n+#include \"libcamera/internal/ipa_manager.h\"\n+#include \"libcamera/internal/software_isp/debayer_params.h\"\n+\n+#include \"gpu_pipeline_shader_pass.h\"\n+\n+/**\n+ * \\file software_isp.cpp\n+ * \\brief Simple software ISP implementation\n+ */\n+\n+namespace libcamera {\n+\n+LOG_DEFINE_CATEGORY(GpuShaderPass)\n+\n+int GpuIspShaderPass::process(eGLImage &eglImageIn, eGLImage &eglImageOut, uint32_t width, uint32_t height, const DebayerParams ¶ms)\n+{\n+\t/* Switch to the output framebuffer */\n+\tegl_.useProgram(programId_);\n+\tegl_.attachTextureToFBO(eglImageOut);\n+\n+\tsetShaderVariableValues(params, eglImageIn);\n+\tglViewport(0, 0, width, height);\n+\tglClear(GL_COLOR_BUFFER_BIT);\n+\tglDrawArrays(GL_TRIANGLE_FAN, 0, DEBAYER_OPENGL_COORDS);\n+\n+\tGLenum err = glGetError();\n+\tif (err != GL_NO_ERROR) {\n+\t\tLOG(GpuShaderPass, Error) << \"Drawing scene fail \" << err;\n+\t\treturn -ENODEV;\n+\t}\n+\n+\treturn 0;\n+}\n+\n+int GpuIspShaderPass::start()\n+{\n+\treturn 0;\n+}\n+\n+void GpuIspShaderPass::stop()\n+{\n+\tif (programId_)\n+\t\tglDeleteProgram(programId_);\n+}\n+\n+void GpuIspShaderPass::configure(const struct PassConfig &passInputCfg, const struct PassConfig &passOutputCfg)\n+{\n+\tpassInputCfg_ = passInputCfg;\n+\tpassOutputCfg_ = passOutputCfg;\n+}\n+\n+}\ndiff --git a/src/libcamera/software_isp/gpu_pipeline_shader_pass.h b/src/libcamera/software_isp/gpu_pipeline_shader_pass.h\nnew file mode 100644\nindex 000000000..d4d4cf34d\n--- /dev/null\n+++ b/src/libcamera/software_isp/gpu_pipeline_shader_pass.h\n@@ -0,0 +1,83 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2026, Linaro Ltd\n+ *\n+ * Authors:\n+ * Bryan O'Donoghue \n+ *\n+ * GpuIspIspShaderPass base class\n+ */\n+\n+#pragma once\n+\n+#include \n+\n+#include \n+#include \n+#include \n+\n+#include \n+#include \n+\n+#include \"libcamera/internal/egl.h\"\n+#include \"libcamera/internal/software_isp/debayer_params.h\"\n+\n+#include \n+#include \n+#include \n+\n+#include \"../glsl_shaders.h\"\n+\n+namespace libcamera {\n+\n+#define DEBAYER_OPENGL_COORDS 4\n+\n+class FrameBuffer;\n+\n+struct PassConfig {\n+\tSize size;\n+\tunsigned int stride;\n+\tPixelFormat format;\n+\tRectangle window;\n+};\n+\n+class GpuIspShaderPass : public Object\n+{\n+public:\n+\tGpuIspShaderPass(eGL& egl) : egl_(egl) {}\n+\t~GpuIspShaderPass() {}\n+\n+\tvirtual int process(eGLImage &eglImageIn, eGLImage &eglImageOut, uint32_t width, uint32_t height, const DebayerParams ¶ms);\n+\tvirtual int start();\n+\tvirtual void stop();\n+\tvirtual void configure(const struct PassConfig &passInputCfg, const struct PassConfig &passOutputCfg);\n+\tvirtual int initShaders(PixelFormat inputFormat, PixelFormat outputFormat) = 0;\n+\tvirtual int getShaderVariableLocations(void) = 0;\n+\tvirtual void setShaderVariableValues(const DebayerParams ¶ms, eGLImage &eglImageIn) = 0;\n+\tvirtual const char *name() const { return \"GpuIspShaderPass\"; }\n+\n+\tunsigned int getBytesPerPixel() { return bytesPerPixel_; };\n+\n+\t/* glFormat_ is a special case we are moving to one shader which will use GL_R\n+\t * so rather than do a hack make ShaderPasses do the Textrue allocation and thus have\n+\t * access to glFormat_. Make glFormat_ available to the upper level class.\n+\t * This variabile will be dropped at the end of the series anyway.\n+\t */\n+\tGLint glFormat_;\n+\n+protected:\n+\teGL& egl_;\n+\n+\t/* Shader calculates this getter provides ability to interrogate if needed */\n+\tunsigned int bytesPerPixel_;\n+\n+\t/* Shader program identifiers */\n+\tGLuint vertexShaderId_ = 0;\n+\tGLuint fragmentShaderId_ = 0;\n+\tGLuint programId_ = 0;\n+\n+\tstruct PassConfig passInputCfg_;\n+\tstruct PassConfig passOutputCfg_;\n+};\n+\n+} /* namespace libcamera */\ndiff --git a/src/libcamera/software_isp/meson.build b/src/libcamera/software_isp/meson.build\nindex 51cc6ac3e..f8bce5203 100644\n--- a/src/libcamera/software_isp/meson.build\n+++ b/src/libcamera/software_isp/meson.build\n@@ -32,6 +32,7 @@ if mesa_works\n libcamera_internal_sources += files([\n '../egl.cpp',\n 'software_isp_pipeline_gpu.cpp',\n+ 'gpu_pipeline_shader_pass.cpp',\n ])\n libcamera_deps += [\n libegl,\n","prefixes":["05/30"]}