diff options
Diffstat (limited to 'Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp')
| -rw-r--r-- | Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp | 167 |
1 files changed, 131 insertions, 36 deletions
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp b/Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp index 7442e5d294..9a3e0b9bed 100644 --- a/Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp +++ b/Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp @@ -20,7 +20,8 @@ #include "VideoConfig.h" #include "GLUtil.h" #include "PostProcessing.h" -#include "PixelShaderCache.h" +#include "ProgramShaderCache.h" +#include "FramebufferManager.h" namespace OGL { @@ -29,16 +30,72 @@ namespace PostProcessing { static std::string s_currentShader; -static FRAGMENTSHADER s_shader; +static SHADER s_shader; +static bool s_enable; + +static u32 s_width; +static u32 s_height; +static GLuint s_fbo; +static GLuint s_texture; +static GLuint s_vao; +static GLuint s_vbo; + +static GLuint s_uniform_resolution; + +static char s_vertex_shader[] = + "in vec2 rawpos;\n" + "in vec2 tex0;\n" + "out vec2 uv0;\n" + "void main(void) {\n" + " gl_Position = vec4(rawpos,0,1);\n" + " uv0 = tex0;\n" + "}\n"; void Init() { s_currentShader = ""; + s_enable = 0; + s_width = 0; + s_height = 0; + + glGenFramebuffers(1, &s_fbo); + glGenTextures(1, &s_texture); + glBindTexture(GL_TEXTURE_2D, s_texture); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0); // disable mipmaps + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, 1, 1, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); + glBindFramebuffer(GL_FRAMEBUFFER, s_fbo); + glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, s_texture, 0); + FramebufferManager::SetFramebuffer(0); + + glGenBuffers(1, &s_vbo); + glBindBuffer(GL_ARRAY_BUFFER, s_vbo); + GLfloat vertices[] = { + -1.f, -1.f, 0.f, 0.f, + -1.f, 1.f, 0.f, 1.f, + 1.f, -1.f, 1.f, 0.f, + 1.f, 1.f, 1.f, 1.f + }; + glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); + + glGenVertexArrays(1, &s_vao); + glBindVertexArray( s_vao ); + glEnableVertexAttribArray(SHADER_POSITION_ATTRIB); + glVertexAttribPointer(SHADER_POSITION_ATTRIB, 2, GL_FLOAT, 0, sizeof(GLfloat)*4, NULL); + glEnableVertexAttribArray(SHADER_TEXTURE0_ATTRIB); + glVertexAttribPointer(SHADER_TEXTURE0_ATTRIB, 2, GL_FLOAT, 0, sizeof(GLfloat)*4, (GLfloat*)NULL+2); } void Shutdown() { s_shader.Destroy(); + + glDeleteFramebuffers(1, &s_vbo); + glDeleteTextures(1, &s_texture); + + glDeleteBuffers(1, &s_vbo); + glDeleteVertexArrays(1, &s_vao); } void ReloadShader() @@ -46,45 +103,83 @@ void ReloadShader() s_currentShader = ""; } -bool ApplyShader() +void BindTargetFramebuffer () { - if (s_currentShader != File::GetUserPath(D_SHADERS_IDX) + g_ActiveConfig.sPostProcessingShader + ".txt") - { - // Set immediately to prevent endless recompiles on failure. - if (!g_ActiveConfig.sPostProcessingShader.empty()) - s_currentShader = File::GetUserPath(D_SHADERS_IDX) + g_ActiveConfig.sPostProcessingShader + ".txt"; - else - s_currentShader.clear(); - - s_shader.Destroy(); - - if (!s_currentShader.empty()) - { - std::string code; - if (File::ReadFileToString(true, s_currentShader.c_str(), code)) - { - if (!PixelShaderCache::CompilePixelShader(s_shader, code.c_str())) - { - ERROR_LOG(VIDEO, "Failed to compile post-processing shader %s", s_currentShader.c_str()); - } - } - else - { - ERROR_LOG(VIDEO, "Failed to load post-processing shader %s - does not exist?", s_currentShader.c_str()); - } - } + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, s_enable ? s_fbo : 0); +} + +void BlitToScreen() +{ + if(!s_enable) return; + + glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); + glViewport(0, 0, s_width, s_height); + + glBindVertexArray(s_vao); + s_shader.Bind(); + + glUniform4f(s_uniform_resolution, (float)s_width, (float)s_height, 1.0f/(float)s_width, 1.0f/(float)s_height); + + glActiveTexture(GL_TEXTURE0+9); + glBindTexture(GL_TEXTURE_2D, s_texture); + glDrawArrays(GL_TRIANGLE_STRIP, 0, 4); + glBindTexture(GL_TEXTURE_2D, 0); + +/* glBindFramebuffer(GL_READ_FRAMEBUFFER, s_fbo); + + glBlitFramebuffer(rc.left, rc.bottom, rc.right, rc.top, + rc.left, rc.bottom, rc.right, rc.top, + GL_COLOR_BUFFER_BIT, GL_NEAREST);*/ +} + +void Update ( u32 width, u32 height ) +{ + ApplyShader(); + + if(s_enable && (width != s_width || height != s_height)) { + s_width = width; + s_height = height; + + // alloc texture for framebuffer + glActiveTexture(GL_TEXTURE0+9); + glBindTexture(GL_TEXTURE_2D, s_texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); + glBindTexture(GL_TEXTURE_2D, 0); } +} - if (s_shader.glprogid != 0) - { - PixelShaderCache::SetCurrentShader(s_shader.glprogid); - return true; +void ApplyShader() +{ + // shader didn't changed + if (s_currentShader == g_ActiveConfig.sPostProcessingShader) return; + s_currentShader = g_ActiveConfig.sPostProcessingShader; + s_enable = false; + s_shader.Destroy(); + + // shader disabled + if (g_ActiveConfig.sPostProcessingShader == "") return; + + // so need to compile shader + + // loading shader code + std::string code; + std::string path = File::GetUserPath(D_SHADERS_IDX) + g_ActiveConfig.sPostProcessingShader + ".txt"; + if(!File::ReadFileToString(true, path.c_str(), code)) { + ERROR_LOG(VIDEO, "post-processing shader not found: %s", path.c_str()); + return; } - else - { - PixelShaderCache::DisableShader(); - return false; + + // and compile it + if (!ProgramShaderCache::CompileShader(s_shader, s_vertex_shader, code.c_str())) { + ERROR_LOG(VIDEO, "Failed to compile post-processing shader %s", s_currentShader.c_str()); + return; } + + // read uniform locations + s_uniform_resolution = glGetUniformLocation(s_shader.glprogid, "resolution"); + + // successful + s_enable = true; } } // namespace |