public void ResetBackbuffer(
PresentationParameters presentationParameters,
bool renderTargetBound
) {
int winWidth, winHeight;
GetWindowDimensions(
presentationParameters,
out winWidth,
out winHeight
);
bool useFauxBackbuffer = ( winWidth != presentationParameters.BackBufferWidth ||
winHeight != presentationParameters.BackBufferHeight ||
presentationParameters.MultiSampleCount > 0 );
if (useFauxBackbuffer)
{
if (Backbuffer is NullBackbuffer)
{
if (!supportsFauxBackbuffer)
{
throw new NoSuitableGraphicsDeviceException(
"Your hardware does not support the faux-backbuffer!" +
"\n\nKeep the window/backbuffer resolution the same."
);
}
Backbuffer = new OpenGLBackbuffer(
this,
presentationParameters.BackBufferWidth,
presentationParameters.BackBufferHeight,
presentationParameters.DepthStencilFormat,
presentationParameters.MultiSampleCount
);
}
else
{
Backbuffer.ResetFramebuffer(
presentationParameters,
renderTargetBound
);
}
}
else
{
if (Backbuffer is OpenGLBackbuffer)
{
(Backbuffer as OpenGLBackbuffer).Dispose();
Backbuffer = new NullBackbuffer(
presentationParameters.BackBufferWidth,
presentationParameters.BackBufferHeight
);
}
else
{
Backbuffer.ResetFramebuffer(
presentationParameters,
renderTargetBound
);
}
}
}
public void ResetBackbuffer(
PresentationParameters presentationParameters,
bool renderTargetBound
)
{
Rectangle bounds = FNAPlatform.GetWindowBounds(presentationParameters.DeviceWindowHandle);
bool useFauxBackbuffer = ( bounds.Width != presentationParameters.BackBufferWidth ||
bounds.Height != presentationParameters.BackBufferHeight ||
presentationParameters.MultiSampleCount > 0 );
if (useFauxBackbuffer)
{
if (Backbuffer is NullBackbuffer)
{
Backbuffer = new OpenGLBackbuffer(
this,
presentationParameters.BackBufferWidth,
presentationParameters.BackBufferHeight,
presentationParameters.DepthStencilFormat,
presentationParameters.MultiSampleCount
);
}
else
{
Backbuffer.ResetFramebuffer(
presentationParameters,
renderTargetBound
);
}
}
else
{
if (Backbuffer is OpenGLBackbuffer)
{
(Backbuffer as OpenGLBackbuffer).Dispose();
Backbuffer = new NullBackbuffer(
presentationParameters.BackBufferWidth,
presentationParameters.BackBufferHeight
);
}
else
{
Backbuffer.ResetFramebuffer(
presentationParameters,
renderTargetBound
);
}
}
}
public OpenGLDevice(
PresentationParameters presentationParameters
) {
// Create OpenGL context
glContext = SDL.SDL_GL_CreateContext(
presentationParameters.DeviceWindowHandle
);
// Check for a possible ES context
int flags;
int es2Flag = (int) SDL.SDL_GLprofile.SDL_GL_CONTEXT_PROFILE_ES;
SDL.SDL_GL_GetAttribute(SDL.SDL_GLattr.SDL_GL_CONTEXT_PROFILE_MASK, out flags);
useES2 = (flags & es2Flag) == es2Flag;
// Check for a possible Core context
int coreFlag = (int) SDL.SDL_GLprofile.SDL_GL_CONTEXT_PROFILE_CORE;
useCoreProfile = (flags & coreFlag) == coreFlag;
// Init threaded GL crap where applicable
InitThreadedGL(
presentationParameters.DeviceWindowHandle
);
// Initialize entry points
LoadGLEntryPoints();
shaderProfile = MojoShader.MOJOSHADER_glBestProfile(
GLGetProcAddress,
IntPtr.Zero,
null,
null,
IntPtr.Zero
);
shaderContext = MojoShader.MOJOSHADER_glCreateContext(
shaderProfile,
GLGetProcAddress,
IntPtr.Zero,
null,
null,
IntPtr.Zero
);
MojoShader.MOJOSHADER_glMakeContextCurrent(shaderContext);
// Print GL information
FNAPlatform.Log("OpenGL Device: " + glGetString(GLenum.GL_RENDERER));
FNAPlatform.Log("OpenGL Driver: " + glGetString(GLenum.GL_VERSION));
FNAPlatform.Log("OpenGL Vendor: " + glGetString(GLenum.GL_VENDOR));
FNAPlatform.Log("MojoShader Profile: " + shaderProfile);
// Load the extension list, initialize extension-dependent components
string extensions;
if (useCoreProfile)
{
extensions = string.Empty;
int numExtensions;
glGetIntegerv(GLenum.GL_NUM_EXTENSIONS, out numExtensions);
for (uint i = 0; i < numExtensions; i += 1)
{
extensions += glGetStringi(GLenum.GL_EXTENSIONS, i) + " ";
}
}
else
{
extensions = glGetString(GLenum.GL_EXTENSIONS);
}
SupportsS3tc = (
extensions.Contains("GL_EXT_texture_compression_s3tc") ||
extensions.Contains("GL_OES_texture_compression_S3TC") ||
extensions.Contains("GL_EXT_texture_compression_dxt3") ||
extensions.Contains("GL_EXT_texture_compression_dxt5")
);
SupportsDxt1 = (
SupportsS3tc ||
extensions.Contains("GL_EXT_texture_compression_dxt1")
);
/* Check the max multisample count, override parameters if necessary */
int maxSamples = 0;
if (supportsMultisampling)
{
glGetIntegerv(GLenum.GL_MAX_SAMPLES, out maxSamples);
}
MaxMultiSampleCount = maxSamples;
presentationParameters.MultiSampleCount = Math.Min(
presentationParameters.MultiSampleCount,
MaxMultiSampleCount
);
// Initialize the faux-backbuffer
int winWidth, winHeight;
GetWindowDimensions(
presentationParameters,
out winWidth,
out winHeight
);
if ( winWidth != presentationParameters.BackBufferWidth ||
winHeight != presentationParameters.BackBufferHeight ||
presentationParameters.MultiSampleCount > 0 )
{
if (!supportsFauxBackbuffer)
{
throw new NoSuitableGraphicsDeviceException(
"Your hardware does not support the faux-backbuffer!" +
"\n\nKeep the window/backbuffer resolution the same."
);
}
Backbuffer = new OpenGLBackbuffer(
this,
presentationParameters.BackBufferWidth,
presentationParameters.BackBufferHeight,
presentationParameters.DepthStencilFormat,
presentationParameters.MultiSampleCount
);
}
else
{
Backbuffer = new NullBackbuffer(
presentationParameters.BackBufferWidth,
presentationParameters.BackBufferHeight
);
}
// Initialize texture collection array
int numSamplers;
glGetIntegerv(GLenum.GL_MAX_TEXTURE_IMAGE_UNITS, out numSamplers);
Textures = new OpenGLTexture[numSamplers];
for (int i = 0; i < numSamplers; i += 1)
{
Textures[i] = OpenGLTexture.NullTexture;
}
MaxTextureSlots = numSamplers;
// Initialize vertex attribute state arrays
int numAttributes;
glGetIntegerv(GLenum.GL_MAX_VERTEX_ATTRIBS, out numAttributes);
attributes = new VertexAttribute[numAttributes];
attributeEnabled = new bool[numAttributes];
previousAttributeEnabled = new bool[numAttributes];
attributeDivisor = new int[numAttributes];
previousAttributeDivisor = new int[numAttributes];
for (int i = 0; i < numAttributes; i += 1)
{
attributes[i] = new VertexAttribute();
attributeEnabled[i] = false;
previousAttributeEnabled[i] = false;
attributeDivisor[i] = 0;
previousAttributeDivisor[i] = 0;
}
// Initialize render target FBO and state arrays
int numAttachments;
glGetIntegerv(GLenum.GL_MAX_DRAW_BUFFERS, out numAttachments);
currentAttachments = new uint[numAttachments];
currentAttachmentTypes = new GLenum[numAttachments];
drawBuffersArray = new GLenum[numAttachments];
for (int i = 0; i < numAttachments; i += 1)
{
currentAttachments[i] = 0;
currentAttachmentTypes[i] = GLenum.GL_TEXTURE_2D;
drawBuffersArray[i] = GLenum.GL_COLOR_ATTACHMENT0 + i;
}
currentDrawBuffers = 0;
currentRenderbuffer = 0;
currentDepthStencilFormat = DepthFormat.None;
glGenFramebuffers(1, out targetFramebuffer);
glGenFramebuffers(1, out resolveFramebufferRead);
glGenFramebuffers(1, out resolveFramebufferDraw);
// Generate and bind a VAO, to shut Core up
if (useCoreProfile)
{
glGenVertexArrays(1, out vao);
glBindVertexArray(vao);
}
}
public ModernGLDevice(
PresentationParameters presentationParameters
)
{
// Create OpenGL context
glContext = SDL.SDL_GL_CreateContext(
presentationParameters.DeviceWindowHandle
);
// Check for a possible Core context
int flags;
int coreFlag = (int) SDL.SDL_GLprofile.SDL_GL_CONTEXT_PROFILE_CORE;
SDL.SDL_GL_GetAttribute(SDL.SDL_GLattr.SDL_GL_CONTEXT_PROFILE_MASK, out flags);
useCoreProfile = (flags & coreFlag) == coreFlag;
// Init threaded GL crap where applicable
InitThreadedGL(
presentationParameters.DeviceWindowHandle
);
// Initialize entry points
LoadGLEntryPoints();
shaderProfile = MojoShader.MOJOSHADER_glBestProfile(
GLGetProcAddress,
IntPtr.Zero,
null,
null,
IntPtr.Zero
);
shaderContext = MojoShader.MOJOSHADER_glCreateContext(
shaderProfile,
GLGetProcAddress,
IntPtr.Zero,
null,
null,
IntPtr.Zero
);
MojoShader.MOJOSHADER_glMakeContextCurrent(shaderContext);
// Print GL information
FNALoggerEXT.LogInfo("IGLDevice: ModernGLDevice");
FNALoggerEXT.LogInfo("OpenGL Device: " + glGetString(GLenum.GL_RENDERER));
FNALoggerEXT.LogInfo("OpenGL Driver: " + glGetString(GLenum.GL_VERSION));
FNALoggerEXT.LogInfo("OpenGL Vendor: " + glGetString(GLenum.GL_VENDOR));
FNALoggerEXT.LogInfo("MojoShader Profile: " + shaderProfile);
// Load the extension list, initialize extension-dependent components
string extensions;
if (useCoreProfile)
{
extensions = string.Empty;
int numExtensions;
glGetIntegerv(GLenum.GL_NUM_EXTENSIONS, out numExtensions);
for (uint i = 0; i < numExtensions; i += 1)
{
extensions += glGetStringi(GLenum.GL_EXTENSIONS, i) + " ";
}
}
else
{
extensions = glGetString(GLenum.GL_EXTENSIONS);
}
SupportsS3tc = (
extensions.Contains("GL_EXT_texture_compression_s3tc") ||
extensions.Contains("GL_OES_texture_compression_S3TC") ||
extensions.Contains("GL_EXT_texture_compression_dxt3") ||
extensions.Contains("GL_EXT_texture_compression_dxt5")
);
SupportsDxt1 = (
SupportsS3tc ||
extensions.Contains("GL_EXT_texture_compression_dxt1")
);
SupportsHardwareInstancing = true;
/* Check the max multisample count, override parameters if necessary */
int maxSamples = 0;
glGetIntegerv(GLenum.GL_MAX_SAMPLES, out maxSamples);
MaxMultiSampleCount = maxSamples;
presentationParameters.MultiSampleCount = Math.Min(
presentationParameters.MultiSampleCount,
MaxMultiSampleCount
);
// Initialize the faux-backbuffer
Rectangle bounds = FNAPlatform.GetWindowBounds(presentationParameters.DeviceWindowHandle);
if ( bounds.Width != presentationParameters.BackBufferWidth ||
bounds.Height != presentationParameters.BackBufferHeight ||
presentationParameters.MultiSampleCount > 0 )
{
Backbuffer = new OpenGLBackbuffer(
this,
presentationParameters.BackBufferWidth,
presentationParameters.BackBufferHeight,
presentationParameters.DepthStencilFormat,
presentationParameters.MultiSampleCount
);
}
else
{
Backbuffer = new NullBackbuffer(
presentationParameters.BackBufferWidth,
presentationParameters.BackBufferHeight
);
}
// Initialize texture collection array
int numSamplers;
glGetIntegerv(GLenum.GL_MAX_TEXTURE_IMAGE_UNITS, out numSamplers);
Textures = new OpenGLTexture[numSamplers];
Samplers = new uint[numSamplers];
SamplersU = new TextureAddressMode[numSamplers];
SamplersV = new TextureAddressMode[numSamplers];
SamplersW = new TextureAddressMode[numSamplers];
SamplersFilter = new TextureFilter[numSamplers];
SamplersAnisotropy = new float[numSamplers];
SamplersMaxLevel = new int[numSamplers];
SamplersLODBias = new float[numSamplers];
SamplersMipped = new bool[numSamplers];
glCreateSamplers(numSamplers, Samplers);
for (int i = 0; i < numSamplers; i += 1)
{
Textures[i] = OpenGLTexture.NullTexture;
SamplersU[i] = TextureAddressMode.Wrap;
SamplersV[i] = TextureAddressMode.Wrap;
SamplersW[i] = TextureAddressMode.Wrap;
SamplersFilter[i] = TextureFilter.Linear;
SamplersAnisotropy[i] = 4.0f;
SamplersMaxLevel[i] = 0;
SamplersLODBias[i] = 0.0f;
SamplersMipped[i] = false;
glBindSampler(i, Samplers[i]);
}
MaxTextureSlots = numSamplers;
// Initialize vertex attribute state arrays
int numAttributes;
glGetIntegerv(GLenum.GL_MAX_VERTEX_ATTRIBS, out numAttributes);
attributes = new VertexAttribute[numAttributes];
attributeEnabled = new bool[numAttributes];
previousAttributeEnabled = new bool[numAttributes];
attributeDivisor = new int[numAttributes];
previousAttributeDivisor = new int[numAttributes];
for (int i = 0; i < numAttributes; i += 1)
{
attributes[i] = new VertexAttribute();
attributeEnabled[i] = false;
previousAttributeEnabled[i] = false;
attributeDivisor[i] = 0;
previousAttributeDivisor[i] = 0;
}
// Initialize render target FBO and state arrays
int numAttachments;
glGetIntegerv(GLenum.GL_MAX_DRAW_BUFFERS, out numAttachments);
currentAttachments = new uint[numAttachments];
currentAttachmentTypes = new GLenum[numAttachments];
drawBuffersArray = new GLenum[numAttachments];
for (int i = 0; i < numAttachments; i += 1)
{
currentAttachments[i] = 0;
currentAttachmentTypes[i] = GLenum.GL_TEXTURE_2D;
drawBuffersArray[i] = GLenum.GL_COLOR_ATTACHMENT0 + i;
}
currentDrawBuffers = 0;
currentRenderbuffer = 0;
currentDepthStencilFormat = DepthFormat.None;
glCreateFramebuffers(1, out targetFramebuffer);
glCreateFramebuffers(1, out resolveFramebufferRead);
glCreateFramebuffers(1, out resolveFramebufferDraw);
// Generate and bind a VAO, to shut Core up
if (useCoreProfile)
{
glGenVertexArrays(1, out vao);
glBindVertexArray(vao);
}
}
