From 91df2beee394afc17f379511007a7b26b911278f Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Sun, 23 Aug 2020 21:28:15 -0300 Subject: [PATCH] video_core/host_shaders: Add CMake integration for string shaders Add the necessary CMake code to copy the contents in a string source shader (GLSL or GLASM) to a header file then consumed by video_core files. This allows editting GLSL in its own files without having to maintain them in source files. For now, only OpenGL presentation shaders are moved, but we can add GLASM presentation shaders and static SPIR-V generation through glslangValidator in the future. --- src/video_core/CMakeLists.txt | 5 ++ src/video_core/host_shaders/CMakeLists.txt | 43 +++++++++++++++++ .../host_shaders/StringShaderHeader.cmake | 11 +++++ .../host_shaders/opengl_present.frag | 10 ++++ .../host_shaders/opengl_present.vert | 24 ++++++++++ .../host_shaders/source_shader.h.in | 9 ++++ .../renderer_opengl/renderer_opengl.cpp | 46 ++----------------- 7 files changed, 106 insertions(+), 42 deletions(-) create mode 100644 src/video_core/host_shaders/CMakeLists.txt create mode 100644 src/video_core/host_shaders/StringShaderHeader.cmake create mode 100644 src/video_core/host_shaders/opengl_present.frag create mode 100644 src/video_core/host_shaders/opengl_present.vert create mode 100644 src/video_core/host_shaders/source_shader.h.in diff --git a/src/video_core/CMakeLists.txt b/src/video_core/CMakeLists.txt index 3cd896a0f..d85f1e9d1 100644 --- a/src/video_core/CMakeLists.txt +++ b/src/video_core/CMakeLists.txt @@ -1,3 +1,5 @@ +add_subdirectory(host_shaders) + add_library(video_core STATIC buffer_cache/buffer_block.h buffer_cache/buffer_cache.h @@ -244,6 +246,9 @@ create_target_directory_groups(video_core) target_link_libraries(video_core PUBLIC common core) target_link_libraries(video_core PRIVATE glad xbyak) +add_dependencies(video_core host_shaders) +target_include_directories(video_core PRIVATE ${HOST_SHADERS_INCLUDE}) + if (ENABLE_VULKAN) target_include_directories(video_core PRIVATE sirit ../../externals/Vulkan-Headers/include) target_compile_definitions(video_core PRIVATE HAS_VULKAN) diff --git a/src/video_core/host_shaders/CMakeLists.txt b/src/video_core/host_shaders/CMakeLists.txt new file mode 100644 index 000000000..aa62363a7 --- /dev/null +++ b/src/video_core/host_shaders/CMakeLists.txt @@ -0,0 +1,43 @@ +set(SHADER_FILES + opengl_present.frag + opengl_present.vert +) + +set(SHADER_INCLUDE ${CMAKE_CURRENT_BINARY_DIR}/include) +set(HOST_SHADERS_INCLUDE ${SHADER_INCLUDE} PARENT_SCOPE) + +set(SHADER_DIR ${SHADER_INCLUDE}/video_core/host_shaders) +add_custom_command( + OUTPUT + ${SHADER_DIR} + COMMAND + ${CMAKE_COMMAND} -E make_directory ${SHADER_DIR} +) + +set(INPUT_FILE ${CMAKE_CURRENT_SOURCE_DIR}/source_shader.h.in) +set(HEADER_GENERATOR ${CMAKE_CURRENT_SOURCE_DIR}/StringShaderHeader.cmake) + +foreach(FILENAME IN ITEMS ${SHADER_FILES}) + string(REPLACE "." "_" SHADER_NAME ${FILENAME}) + set(SOURCE_FILE ${CMAKE_CURRENT_SOURCE_DIR}/${FILENAME}) + set(HEADER_FILE ${SHADER_DIR}/${SHADER_NAME}.h) + add_custom_command( + OUTPUT + ${HEADER_FILE} + COMMAND + ${CMAKE_COMMAND} -P ${HEADER_GENERATOR} ${SOURCE_FILE} ${HEADER_FILE} ${INPUT_FILE} + MAIN_DEPENDENCY + ${SOURCE_FILE} + DEPENDS + ${HEADER_GENERATOR} + ${INPUT_FILE} + ) + set(SHADER_HEADERS ${SHADER_HEADERS} ${HEADER_FILE}) +endforeach() + +add_custom_target(host_shaders + DEPENDS + ${SHADER_HEADERS} + SOURCES + ${SHADER_FILES} +) diff --git a/src/video_core/host_shaders/StringShaderHeader.cmake b/src/video_core/host_shaders/StringShaderHeader.cmake new file mode 100644 index 000000000..368bce0ed --- /dev/null +++ b/src/video_core/host_shaders/StringShaderHeader.cmake @@ -0,0 +1,11 @@ +set(SOURCE_FILE ${CMAKE_ARGV3}) +set(HEADER_FILE ${CMAKE_ARGV4}) +set(INPUT_FILE ${CMAKE_ARGV5}) + +get_filename_component(CONTENTS_NAME ${SOURCE_FILE} NAME) +string(REPLACE "." "_" CONTENTS_NAME ${CONTENTS_NAME}) +string(TOUPPER ${CONTENTS_NAME} CONTENTS_NAME) + +file(READ ${SOURCE_FILE} CONTENTS) + +configure_file(${INPUT_FILE} ${HEADER_FILE} @ONLY) diff --git a/src/video_core/host_shaders/opengl_present.frag b/src/video_core/host_shaders/opengl_present.frag new file mode 100644 index 000000000..8a4cb024b --- /dev/null +++ b/src/video_core/host_shaders/opengl_present.frag @@ -0,0 +1,10 @@ +#version 430 core + +layout (location = 0) in vec2 frag_tex_coord; +layout (location = 0) out vec4 color; + +layout (binding = 0) uniform sampler2D color_texture; + +void main() { + color = vec4(texture(color_texture, frag_tex_coord).rgb, 1.0f); +} diff --git a/src/video_core/host_shaders/opengl_present.vert b/src/video_core/host_shaders/opengl_present.vert new file mode 100644 index 000000000..2235d31a4 --- /dev/null +++ b/src/video_core/host_shaders/opengl_present.vert @@ -0,0 +1,24 @@ +#version 430 core + +out gl_PerVertex { + vec4 gl_Position; +}; + +layout (location = 0) in vec2 vert_position; +layout (location = 1) in vec2 vert_tex_coord; +layout (location = 0) out vec2 frag_tex_coord; + +// This is a truncated 3x3 matrix for 2D transformations: +// The upper-left 2x2 submatrix performs scaling/rotation/mirroring. +// The third column performs translation. +// The third row could be used for projection, which we don't need in 2D. It hence is assumed to +// implicitly be [0, 0, 1] +layout (location = 0) uniform mat3x2 modelview_matrix; + +void main() { + // Multiply input position by the rotscale part of the matrix and then manually translate by + // the last column. This is equivalent to using a full 3x3 matrix and expanding the vector + // to `vec3(vert_position.xy, 1.0)` + gl_Position = vec4(mat2(modelview_matrix) * vert_position + modelview_matrix[2], 0.0, 1.0); + frag_tex_coord = vert_tex_coord; +} diff --git a/src/video_core/host_shaders/source_shader.h.in b/src/video_core/host_shaders/source_shader.h.in new file mode 100644 index 000000000..ccdb0d2a9 --- /dev/null +++ b/src/video_core/host_shaders/source_shader.h.in @@ -0,0 +1,9 @@ +#pragma once + +#include + +namespace HostShaders { + +constexpr std::string_view @CONTENTS_NAME@ = R"(@CONTENTS@)"; + +} // namespace HostShaders diff --git a/src/video_core/renderer_opengl/renderer_opengl.cpp b/src/video_core/renderer_opengl/renderer_opengl.cpp index 14bbc3a1c..4a13f37d7 100644 --- a/src/video_core/renderer_opengl/renderer_opengl.cpp +++ b/src/video_core/renderer_opengl/renderer_opengl.cpp @@ -21,6 +21,8 @@ #include "core/perf_stats.h" #include "core/settings.h" #include "core/telemetry_session.h" +#include "video_core/host_shaders/opengl_present_frag.h" +#include "video_core/host_shaders/opengl_present_vert.h" #include "video_core/morton.h" #include "video_core/renderer_opengl/gl_rasterizer.h" #include "video_core/renderer_opengl/gl_shader_manager.h" @@ -44,46 +46,6 @@ struct Frame { bool is_srgb{}; /// Framebuffer is sRGB or RGB }; -constexpr char VERTEX_SHADER[] = R"( -#version 430 core - -out gl_PerVertex { - vec4 gl_Position; -}; - -layout (location = 0) in vec2 vert_position; -layout (location = 1) in vec2 vert_tex_coord; -layout (location = 0) out vec2 frag_tex_coord; - -// This is a truncated 3x3 matrix for 2D transformations: -// The upper-left 2x2 submatrix performs scaling/rotation/mirroring. -// The third column performs translation. -// The third row could be used for projection, which we don't need in 2D. It hence is assumed to -// implicitly be [0, 0, 1] -layout (location = 0) uniform mat3x2 modelview_matrix; - -void main() { - // Multiply input position by the rotscale part of the matrix and then manually translate by - // the last column. This is equivalent to using a full 3x3 matrix and expanding the vector - // to `vec3(vert_position.xy, 1.0)` - gl_Position = vec4(mat2(modelview_matrix) * vert_position + modelview_matrix[2], 0.0, 1.0); - frag_tex_coord = vert_tex_coord; -} -)"; - -constexpr char FRAGMENT_SHADER[] = R"( -#version 430 core - -layout (location = 0) in vec2 frag_tex_coord; -layout (location = 0) out vec4 color; - -layout (binding = 0) uniform sampler2D color_texture; - -void main() { - color = vec4(texture(color_texture, frag_tex_coord).rgb, 1.0f); -} -)"; - constexpr GLint PositionLocation = 0; constexpr GLint TexCoordLocation = 1; constexpr GLint ModelViewMatrixLocation = 0; @@ -460,10 +422,10 @@ void RendererOpenGL::InitOpenGLObjects() { // Create shader programs OGLShader vertex_shader; - vertex_shader.Create(VERTEX_SHADER, GL_VERTEX_SHADER); + vertex_shader.Create(HostShaders::OPENGL_PRESENT_VERT, GL_VERTEX_SHADER); OGLShader fragment_shader; - fragment_shader.Create(FRAGMENT_SHADER, GL_FRAGMENT_SHADER); + fragment_shader.Create(HostShaders::OPENGL_PRESENT_FRAG, GL_FRAGMENT_SHADER); vertex_program.Create(true, false, vertex_shader.handle); fragment_program.Create(true, false, fragment_shader.handle);