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OpenGL Renderer: Fix bug where the OpenGL renderer would completely fail to run if the user's ancient GPU doesn't support shaders. (Regression from commit 7080e21.) 

- Also do some minor improvements to the code robustness when creating an OpenGLRenderer object.
This commit is contained in:
rogerman 2018-12-21 16:21:44 -08:00
parent 589524823b
commit 7bb438020b
3 changed files with 42 additions and 24 deletions
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43
desmume/src/OGLRender.cpp
View File

@ -794,7 +794,7 @@ void main()\n\
}\n\
"};
bool IsVersionSupported(unsigned int checkVersionMajor, unsigned int checkVersionMinor, unsigned int checkVersionRevision)
bool IsOpenGLDriverVersionSupported(unsigned int checkVersionMajor, unsigned int checkVersionMinor, unsigned int checkVersionRevision)
{
bool result = false;
@ -1027,7 +1027,7 @@ static Render3D* OpenGLRendererCreate()
if (!BEGINGL())
{
INFO("OpenGL<%s,%s>: Could not initialize -- BEGINGL() failed.\n",require_profile?"force":"auto",enable_3_2?"3_2":"old");
INFO("OpenGL<%s,%s>: Could not initialize -- BEGINGL() failed.\n", require_profile?"force":"auto", enable_3_2?"3_2":"old");
return NULL;
}
@ -1050,7 +1050,7 @@ static Render3D* OpenGLRendererCreate()
// Check the driver's OpenGL version
OGLGetDriverVersion(oglVersionString, &_OGLDriverVersion.major, &_OGLDriverVersion.minor, &_OGLDriverVersion.revision);
if (!IsVersionSupported(OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MAJOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MINOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_REVISION))
if (!IsOpenGLDriverVersionSupported(OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MAJOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MINOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_REVISION))
{
INFO("OpenGL: Driver does not support OpenGL v%u.%u.%u or later. Disabling 3D renderer.\n[ Driver Info -\n Version: %s\n Vendor: %s\n Renderer: %s ]\n",
OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MAJOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_MINOR, OGLRENDER_MINIMUM_DRIVER_VERSION_REQUIRED_REVISION,
@ -1085,17 +1085,17 @@ static Render3D* OpenGLRendererCreate()
{
OGLLoadEntryPoints_Legacy();
if (IsVersionSupported(2, 1, 0))
if (IsOpenGLDriverVersionSupported(2, 1, 0))
{
newRenderer = new OpenGLRenderer_2_1;
newRenderer->SetVersion(2, 1, 0);
}
else if (IsVersionSupported(2, 0, 0))
else if (IsOpenGLDriverVersionSupported(2, 0, 0))
{
newRenderer = new OpenGLRenderer_2_0;
newRenderer->SetVersion(2, 0, 0);
}
else if (IsVersionSupported(1, 2, 0))
else if (IsOpenGLDriverVersionSupported(1, 2, 0))
{
newRenderer = new OpenGLRenderer_1_2;
newRenderer->SetVersion(1, 2, 0);
@ -1120,12 +1120,12 @@ static Render3D* OpenGLRendererCreate()
INFO("OpenGL: This driver does not support the minimum feature set required to run this renderer. Disabling 3D renderer.\n[ Driver Info -\n Version: %s\n Vendor: %s\n Renderer: %s ]\n",
oglVersionString, oglVendorString, oglRendererString);
}
else if (IsVersionSupported(1, 5, 0) && (error == OGLERROR_VBO_UNSUPPORTED))
else if (newRenderer->IsVersionSupported(1, 5, 0) && (error == OGLERROR_VBO_UNSUPPORTED))
{
INFO("OpenGL: VBOs are not available, even though this version of OpenGL requires them. Disabling 3D renderer.\n[ Driver Info -\n Version: %s\n Vendor: %s\n Renderer: %s ]\n",
oglVersionString, oglVendorString, oglRendererString);
}
else if ( IsVersionSupported(2, 0, 0) &&
else if ( newRenderer->IsVersionSupported(2, 0, 0) &&
(error == OGLERROR_SHADER_CREATE_ERROR ||
error == OGLERROR_VERTEX_SHADER_PROGRAM_LOAD_ERROR ||
error == OGLERROR_FRAGMENT_SHADER_PROGRAM_LOAD_ERROR) )
@ -1133,12 +1133,12 @@ static Render3D* OpenGLRendererCreate()
INFO("OpenGL: Shaders are not working, even though they should be on this version of OpenGL. Disabling 3D renderer.\n[ Driver Info -\n Version: %s\n Vendor: %s\n Renderer: %s ]\n",
oglVersionString, oglVendorString, oglRendererString);
}
else if (IsVersionSupported(2, 1, 0) && (error == OGLERROR_PBO_UNSUPPORTED))
else if (newRenderer->IsVersionSupported(2, 1, 0) && (error == OGLERROR_PBO_UNSUPPORTED))
{
INFO("OpenGL: PBOs are not available, even though this version of OpenGL requires them. Disabling 3D renderer.\n[ Driver Info -\n Version: %s\n Vendor: %s\n Renderer: %s ]\n",
oglVersionString, oglVendorString, oglRendererString);
}
else if (IsVersionSupported(3, 0, 0) && (error == OGLERROR_FBO_CREATE_ERROR) && (OGLLoadEntryPoints_3_2_Func != NULL))
else if (newRenderer->IsVersionSupported(3, 0, 0) && (error == OGLERROR_FBO_CREATE_ERROR) && (OGLLoadEntryPoints_3_2_Func != NULL))
{
INFO("OpenGL: FBOs are not available, even though this version of OpenGL requires them. Disabling 3D renderer.\n[ Driver Info -\n Version: %s\n Vendor: %s\n Renderer: %s ]\n",
oglVersionString, oglVendorString, oglRendererString);
@ -1412,6 +1412,20 @@ void OpenGLRenderer::SetVersion(unsigned int major, unsigned int minor, unsigned
this->versionRevision = revision;
}
bool OpenGLRenderer::IsVersionSupported(unsigned int checkVersionMajor, unsigned int checkVersionMinor, unsigned int checkVersionRevision) const
{
bool result = false;
if ( (this->versionMajor > checkVersionMajor) ||
(this->versionMajor >= checkVersionMajor && this->versionMinor > checkVersionMinor) ||
(this->versionMajor >= checkVersionMajor && this->versionMinor >= checkVersionMinor && this->versionRevision >= checkVersionRevision) )
{
result = true;
}
return result;
}
Render3DError OpenGLRenderer::_FlushFramebufferFlipAndConvertOnCPU(const FragmentColor *__restrict srcFramebuffer,
FragmentColor *__restrict dstFramebufferMain, u16 *__restrict dstFramebuffer16,
bool doFramebufferFlip, bool doFramebufferConvert)
@ -2497,7 +2511,7 @@ Render3DError OpenGLRenderer_1_2::InitExtensions()
{
INFO("OpenGL: Shaders are unsupported. Disabling shaders and using fixed-function pipeline. Some emulation features will be disabled.\n");
if (IsVersionSupported(2, 0, 0))
if (this->IsVersionSupported(2, 0, 0))
{
return error;
}
@ -2511,7 +2525,7 @@ Render3DError OpenGLRenderer_1_2::InitExtensions()
else
{
error = OGLERROR_VBO_UNSUPPORTED;
if (IsVersionSupported(1, 5, 0))
if (this->IsVersionSupported(1, 5, 0))
{
return error;
}
@ -2527,7 +2541,7 @@ Render3DError OpenGLRenderer_1_2::InitExtensions()
else
{
error = OGLERROR_PBO_UNSUPPORTED;
if (IsVersionSupported(2, 1, 0))
if (this->IsVersionSupported(2, 1, 0))
{
return error;
}
@ -5433,6 +5447,8 @@ Render3DError OpenGLRenderer_1_2::SetFramebufferSize(size_t w, size_t h)
free_aligned(oldFramebufferColor);
}
if (this->isShaderSupported)
{
// Recreate shaders that use the framebuffer size.
glUseProgram(0);
this->DestroyEdgeMarkProgram();
@ -5442,6 +5458,7 @@ Render3DError OpenGLRenderer_1_2::SetFramebufferSize(size_t w, size_t h)
this->CreateEdgeMarkProgram(EdgeMarkVtxShader_100, EdgeMarkFragShader_100);
this->CreateFramebufferOutput6665Program(FramebufferOutputVtxShader_100, FramebufferOutputRGBA6665FragShader_100);
this->CreateFramebufferOutput8888Program(FramebufferOutputVtxShader_100, FramebufferOutputRGBA8888FragShader_100);
}
if (oglrender_framebufferDidResizeCallback != NULL)
{

3
desmume/src/OGLRender.h
View File

@ -596,7 +596,7 @@ void ENDGL();
extern void (*OGLLoadEntryPoints_3_2_Func)();
extern void (*OGLCreateRenderer_3_2_Func)(OpenGLRenderer **rendererPtr);
bool IsVersionSupported(unsigned int checkVersionMajor, unsigned int checkVersionMinor, unsigned int checkVersionRevision);
bool IsOpenGLDriverVersionSupported(unsigned int checkVersionMajor, unsigned int checkVersionMinor, unsigned int checkVersionRevision);
class OpenGLTexture : public Render3DTexture
{
@ -763,6 +763,7 @@ public:
bool ValidateShaderProgramLink(GLuint theProgram) const;
void GetVersion(unsigned int *major, unsigned int *minor, unsigned int *revision) const;
void SetVersion(unsigned int major, unsigned int minor, unsigned int revision);
bool IsVersionSupported(unsigned int checkVersionMajor, unsigned int checkVersionMinor, unsigned int checkVersionRevision) const;
virtual FragmentColor* GetFramebuffer();
virtual GLsizei GetLimitedMultisampleSize() const;

2
desmume/src/OGLRender_3_2.cpp
View File

@ -761,7 +761,7 @@ void main()\n\
void OGLCreateRenderer_3_2(OpenGLRenderer **rendererPtr)
{
if (IsVersionSupported(3, 2, 0))
if (IsOpenGLDriverVersionSupported(3, 2, 0))
{
*rendererPtr = new OpenGLRenderer_3_2;
(*rendererPtr)->SetVersion(3, 2, 0);