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Add the VideoCommon PostProcessing class.

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This class loads all the common PP shader configuration options and passes those options through to a inherited class that OpenGL or D3D will have.
Makes it so all the common code for PP shaders is in VideoCommon instead of duplicating the code across each backend.
This commit is contained in:
Ryan Houdek
2014-07-29 11:47:56 -05:00
parent 3a657fe33c
commit 6bdc32c54a
13 changed files with 555 additions and 27 deletions
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94
Source/Core/VideoBackends/OGL/PostProcessing.cpp
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@ -40,14 +40,13 @@ static char s_vertex_shader[] =
void Init()
{
s_currentShader = "";
s_enable = 0;
s_width = 0;
s_height = 0;
m_enable = false;
m_width = 0;
m_height = 0;
glGenFramebuffers(1, &s_fbo);
glGenTextures(1, &s_texture);
glBindTexture(GL_TEXTURE_2D, s_texture);
glGenFramebuffers(1, &m_fbo);
glGenTextures(1, &m_texture);
glBindTexture(GL_TEXTURE_2D, m_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);
@ -59,7 +58,7 @@ void Init()
void Shutdown()
{
s_shader.Destroy();
m_shader.Destroy();
glDeleteFramebuffers(1, &s_fbo);
glDeleteTextures(1, &s_texture);
@ -84,6 +83,9 @@ void BlitToScreen()
s_shader.Bind();
glUniform4f(m_uniform_resolution, (float)m_width, (float)m_height, 1.0f/(float)m_width, 1.0f/(float)m_height);
glUniform1ui(m_uniform_time, (GLuint)m_timer.GetTimeElapsed());
glUniform4f(s_uniform_resolution, (float)s_width, (float)s_height, 1.0f/(float)s_width, 1.0f/(float)s_height);
glActiveTexture(GL_TEXTURE0+9);
@ -145,10 +147,82 @@ void ApplyShader()
}
// read uniform locations
s_uniform_resolution = glGetUniformLocation(s_shader.glprogid, "resolution");
m_uniform_resolution = glGetUniformLocation(m_shader.glprogid, "resolution");
m_uniform_time = glGetUniformLocation(m_shader.glprogid, "time");
for (const auto& it : m_options)
{
std::string glsl_name = "option_" + it.first;
m_uniform_bindings[it.first] = glGetUniformLocation(m_shader.glprogid, glsl_name.c_str());
}
// successful
s_enable = true;
m_enable = true;
}
void OpenGLPostProcessing::CreateHeader()
{
m_glsl_header =
// Required variables
// Shouldn't be accessed directly by the PP shader
// Texture sampler
"SAMPLER_BINDING(8) uniform sampler2D samp8;\n"
"SAMPLER_BINDING(9) uniform sampler2D samp9;\n"
// Output variable
"out float4 ocol0;\n"
// Input coordinates
"in float2 uv0;\n"
// Resolution
"uniform float4 resolution;\n"
// Time
"uniform uint time;\n"
// Interfacing functions
"float4 Sample()\n"
"{\n"
"\treturn texture(samp9, uv0);\n"
"}\n"
"float4 SampleLocation(float2 location)\n"
"{\n"
"\treturn texture(samp9, location);\n"
"}\n"
"#define SampleOffset(offset) textureOffset(samp9, uv0, offset)\n"
"float4 SampleFontLocation(float2 location)\n"
"{\n"
"\treturn texture(samp8, location);\n"
"}\n"
"float2 GetResolution()\n"
"{\n"
"\treturn resolution.xy;\n"
"}\n"
"float2 GetInvResolution()\n"
"{\n"
"\treturn resolution.zw;\n"
"}\n"
"float2 GetCoordinates()\n"
"{\n"
"\treturn uv0;\n"
"}\n"
"uint GetTime()\n"
"{\n"
"\treturn time;\n"
"}\n"
"void SetOutput(float4 color)\n"
"{\n"
"\tocol0 = color;\n"
"}\n"
"#define GetOption(x) (option_#x)\n"
"#define OptionEnabled(x) (option_#x != 0)\n";
}
} // namespace