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159 commits

Author SHA1 Message Date
Jelle Raaijmakers
4a2a68cd94 LibGL: Remove unused method from SoftwareRasterizer 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
46c564dd1a LibGL: Invoke own methods when drawing arrays or elements 
Instead of calling the public API, call our own internal API.
 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
b79642ef74 LibGL: Support missing context in glGetError and glGetIntegerv 
In its current state, ScummVM seems to invoke these methods just after
destroying the current GL context. According to the OpenGL spec:

    "Issuing GL commands when the program does not have a current
     context results in undefined behavior, up to and including program
     termination."

Our old behavior was to deref a `nullptr`, which isn't that great. For
now, protect these two methods. If other ports seem to misbehave as
well, we can always expand the check to other methods.
 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
a06b69c5b5 LibGL: Implement the GL_DITHER parameter 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
b89524c981 LibGL: Implement the GL_LIGHTING parameter 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
b1ac181537 LibGL: Centralize all context parameters 
The `glGet*` family of functions requires that all parameters of
different types are transparently converted into each other. For
example, you can request a boolean parameter as a float or a list of
double values as an integer. It might be considered bad practice to
request parameters through the wrongly-typed function, but to be spec-
compliant we need to implement this.

Introduce a new `::get_context_parameter()` to obtain a parameter
value, which is then converted to the right type by the respective
`::gl_get_*()` functions.
 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
2af9b625e8 LibGL: Implement GL_*_BITS and GL_DOUBLEBUFFER parameters 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
033f224966 LibGL: Add GL_SHADING_LANGUAGE_VERSION to glGetString 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
6643775999 LibGL: Add stub for glCopyTexImage2D 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
401472c9a4 LibGL: Implement glDrawPixels and add stub for glBitmap 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
c2960e68a8 LibGL: Implement glLightModelf and glLightModelfv 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
0453cad46c LibGL: Add stubs for glPushAttrib and glPopAttrib 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
fbed7a5ba8 LibGL: Implement glLineWidth 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
22f8294a57 LibGL: Implement glLoadMatrixd 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
506abf2a61 LibGL: Implement glIsList 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
17c109f5d7 LibGL: Implement glTranslated 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
9c9fa33495 LibGL: Implement glClearStencil 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
07bf37be75 LibGL: Implement glScaled 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
9dbc8d7e3c LibGL: Add stubs for glMaterialf and glMaterialfv 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
4eb6295a57 LibGL: Implement glRasterPos2i 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
78d0674228 LibGL: Implement glNormal3f and glNormal3fv 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
ea6bcda79c LibGL: Implement glStencil* functions 
This implements the context state for stencil testing functions and
operations. No rasterization is implemented.
 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
729349ce78 LibGL: Implement GL_STENCIL_TEST 
Only the state is implemented; not the rasterization phase.
 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
11fea6b597 LibGL: Implement glListBase 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
1056bac49a LibGL: Implement glCallLists 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
651ea89094 LibGL: Implement glTexCoord2fv 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
315973e73c LibGL: Implement glColor3ub 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
d38c4ac8b5 LibGL: Add stubs for glLightf and glLightfv 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
7ac8cd057e LibGL: Implement glMultMatrixf 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
40724a426f LibGL: Implement glGetDoublev 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
6d4a5a40a0 LibGL: Define GL_ES_VERSION_2_0 
GLES 2.0 is a subset of OpenGL, so we allow applications to compile
against LibGL as if it fully supports GLES 2.0.

Additionally, we set the definitions to an integer value of `1` so
applications that check for availability like this...

    int main() { return GL_ES_VERSION_2_0; }

...can actually compile. At least ScummVM uses this, and Mesa defines
their constants in the same way:

44b9e11ddb/include/GL/gl.h (L105)
 2021-12-12 21:51:08 +01:00
Jelle Raaijmakers
bccfa205d3 LibGL: Improve mipmap lookup in Texture2D 
We can get rid of a `VERIFY` since we already do this in `Array::at()`.
Also move `::mipmap()` to the header file so it is inlined in
`Sampler2D`.
 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
65cda8e4aa LibGL: Always inline to_rgba32() 
This function popped up in profiles.
 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
930782a155 LibGL: Fix scissor box coordinate system 
We were working with (0, 0) being the top-left of the render target,
but `glScissor` documentation states that this should be the
bottom-left instead.
 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
e967d31a98 LibGL: Remove unused default from rasterizer scissor_box 
Its value is always set in the constructor.
 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
0be2a76ee7 LibGL: Use simpler syntax for GL_SCISSOR_BOX retrieval 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
7ad70f623e LibGL: Make glDeleteTextures skip over 0 names 
As stated in the manual:
     glDeleteTextures silently ignores 0's and names that do not
     correspond to existing textures.

If we do not skip these 0 names, they end up as invalid free texture
names in our name allocator.
 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
4abd6aa198 LibGL: Remove unnecessary break; from SoftwareGLContext 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
d885cc102b LibGL: Fix a number of enum values in gl.h 
Their values should match the enum values as defined by the Khronos
Group.
 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
5e370e6f96 LibGL: Implement GL_(UN)PACK_ALIGNMENT 
These enums are used to indicate byte-alignment when reading from and
to textures. The `GL_UNPACK_ROW_LENGTH` value was reimplemented to
support overriding the source data row width.
 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
0d57f08b98 LibGL: Use Array::back() for last mipmap selection 2021-12-11 23:15:24 +01:00
Jelle Raaijmakers
e27b077c2a LibGL: Add GL::present_context() 
This provides a convenience method that performs the virtual resolution
for `::present` on the provided `GLContext`.
 2021-12-01 12:35:08 +01:00
Jelle Raaijmakers
bed0f3466a LibGL: Remove TextureUnit::unbind_texture() 2021-12-01 10:21:13 +01:00
Jelle Raaijmakers
5788a139d8 LibGL: Implement texture unit texturing states 2021-12-01 10:21:13 +01:00
Hendiadyoin1
76e6ed0d75 LibGL: Mark SoftwareGLContext::gl_scissor as override 
I do not know how this did not trigger CI up until now...
 2021-11-29 23:17:05 +03:30
Stephan Unverwerth
cbf93ee687 LibGL: Initialize all GL context matrices with the identity matrix 2021-11-28 10:07:34 -08:00
Jelle Raaijmakers
bb58f6ccab LibGL: Implement glScissor() 2021-11-28 09:20:58 -08:00
Andreas Kling
0de33b3d6c LibGfx: Use ErrorOr<T> for Bitmap::try_create() 
Another one that was used in a fajillion places.
 2021-11-08 00:35:27 +01:00
Jelle Raaijmakers
a36ee213b9 LibGL: Implement glIsEnabled() 2021-10-17 21:01:52 -07:00
Jelle Raaijmakers
b2627c8b74 LibGL: Implement disabling GL_FOG 2021-10-17 21:01:52 -07:00