Kovid Goyal
444d9536a7
Graphics programs should generate pre-multipled colors in interleaved mode
...
Also fix a few OpenGL state initialization issues.
2017-12-01 12:16:15 +05:30
Kovid Goyal
ffff343e3d
Work on rendering to FBO
2017-12-01 12:16:15 +05:30
Kovid Goyal
f85c050235
Get background_opacity working, at the cost of breaking negative z-index image rendering.
...
Image rendering will need to use an FBO since OpenGL cannot do proper alpha compositing.
As a first step, the interleaved shaders now generate premultiplied colors as opengl can only alpha blend pre-multipled colors
2017-12-01 12:16:14 +05:30
Kovid Goyal
d9b0b5c08f
oops, forgot one place to enable GL_BLEND
2017-12-01 12:16:14 +05:30
Kovid Goyal
a561697f04
No need for GL_BLEND while drawing background colors
2017-12-01 12:16:14 +05:30
Kovid Goyal
bbc140e020
Only enable GL_BLEND when actually needed
2017-12-01 12:16:14 +05:30
Kovid Goyal
2bcbcfff44
Start work on background opacity
2017-12-01 12:16:14 +05:30
Kovid Goyal
1fb81d2265
Fix incorrect blending of foreground and background colors when negative z-index images are present
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Also optimize the blending calculation a bit by using the mix() function
and just adding the text and strike alphas.
2017-12-01 12:16:14 +05:30
Kovid Goyal
3b4a242e26
Fix sprites uniform not being initialized when using layered rendering
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Had no actual bad effects since it is initialized to zero anyway
2017-12-01 12:16:14 +05:30
Kovid Goyal
d7ea28f8e7
Fix sprite texture not initially bound for new OSWindow
2017-12-01 12:15:35 +05:30
Kovid Goyal
2b988b01c6
Get rid of the needs_render tracking as it was too fragile.
2017-12-01 12:15:34 +05:30
Kovid Goyal
82d17c8a59
DRYer
2017-12-01 12:15:32 +05:30
Kovid Goyal
598f08e222
Avoid unneccessary roundtrip through python to create VAOs
2017-12-01 12:15:32 +05:30
Kovid Goyal
49be779982
Port drawing of borders
2017-12-01 12:15:32 +05:30
Kovid Goyal
2ac8ad39c9
Implement destruction of OS windows
2017-12-01 12:15:32 +05:30
Kovid Goyal
e11a50ae83
Work on migrating the code needed for application startup
2017-12-01 12:15:32 +05:30
Kovid Goyal
141a08ec7c
Migrate child-monitor.c to use OSWindow
2017-12-01 12:15:31 +05:30
Kovid Goyal
ace91f04af
More appropriate location for function definition
2017-11-09 17:04:31 +05:30
Kovid Goyal
934d21ac30
Wire up a few remaining pieces
2017-11-09 16:55:46 +05:30
Kovid Goyal
79d8c04b00
Hook up render_line
2017-11-09 16:55:45 +05:30
Kovid Goyal
7d7d82a68d
Start working on actually rendering lines of text
2017-11-09 16:55:38 +05:30
Kovid Goyal
f25d2ea540
Rip out the old sprite update code
2017-11-09 16:45:45 +05:30
Kovid Goyal
8431eef970
Get rid of no longer needed GPU function indirection
2017-11-09 16:45:02 +05:30
Kovid Goyal
7941ac1810
Remove no longer needed mac specific OpenGL extensions check
2017-11-08 15:59:55 +05:30
Kovid Goyal
7ed272e971
Use the glad provided facility for debugging OpenGL
2017-11-08 15:40:07 +05:30
Kovid Goyal
6362499fc2
Switch to using glad instead of glew
2017-11-08 15:15:25 +05:30
Kovid Goyal
e43a26d64c
Better error message when GLEW initialization fails
2017-10-25 14:32:44 +05:30
Kovid Goyal
66803e6873
Workaround to get graphics working on Apple's buggy products
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Apparently some macOS OpenGL drivers cannot handle using a VAO with
attributes that have different divisors/apply to different shaders. So
use a separate VAO for graphics rendering. This is a small performance hit,
but is the price of supporting substandard computers.
2017-10-17 12:15:52 +05:30
Kovid Goyal
02dc637ed0
Use the correct blend function for text
2017-10-17 09:51:21 +05:30
Kovid Goyal
090ee5b846
Disable graphics on older macOS machines
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I give up, trying to work around Apple's buggy drivers without even
having a machine to test my workarounds on is too hard. Simply disable
graphics on macOS < 10.13
Fixes #141
2017-10-16 21:23:29 +05:30
Kovid Goyal
e679fa9a1c
Possible fix for #141
...
Presumably on older macOS versions the Apple OpenGL drivers cannot handle both
non-sequential and non-zero based binding locations. Sigh.
2017-10-16 18:39:49 +05:30
Kovid Goyal
3f8b2184a6
Add a sanity check to ensure the attribute location binding worked
2017-10-13 10:06:12 +05:30
Kovid Goyal
d5088a3e5b
Do image clipping using OpenGL rather than on the CPU
2017-10-07 10:08:26 +05:30
Kovid Goyal
a4e7985fb0
Condition on negative refs as well as in the future we will use interleaved drawing for background opacity as well
2017-10-05 18:21:29 +05:30
Kovid Goyal
75244b1416
...
2017-10-04 23:07:59 +05:30
Kovid Goyal
952f0ad98c
Accommodate the underpowered Apple lineup
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macOS is missing glDrawArraysInstancedBaseInstance
2017-10-04 22:44:03 +05:30
Kovid Goyal
e9bc64205e
Code (not working) to draw graphics
2017-10-04 18:29:48 +05:30
Kovid Goyal
8f05f752af
Code to update graphics buffer
2017-10-04 17:41:11 +05:30
Kovid Goyal
138a37ccac
Start work on the graphics program
2017-10-04 17:22:00 +05:30
Kovid Goyal
e1650d5df7
Implement interleaved drawing of cells
2017-10-04 16:11:20 +05:30
Kovid Goyal
3f615666df
Call grman_update_layers
2017-10-04 15:39:31 +05:30
Kovid Goyal
96a9d64bcb
A spot of refactoring
2017-10-04 15:34:54 +05:30
Kovid Goyal
bd09e2ebf1
Allow re-using VAO objects between different types of cell program
2017-10-04 15:33:15 +05:30
Kovid Goyal
ad040271b9
Initialize uniforms for all cell program variants
2017-10-04 14:46:36 +05:30
Kovid Goyal
ead73c8209
Prepare for two stage rendering of cells
2017-10-04 14:15:51 +05:30
Kovid Goyal
b032130a20
A spot of refactoring
2017-10-04 10:56:44 +05:30
Kovid Goyal
3cbc20005b
Implement sending of image data to GPU
2017-10-01 09:04:46 +05:30
Kovid Goyal
710d00674a
Export the free texture function
2017-09-30 13:51:52 +05:30
Kovid Goyal
b5b9a7ba6d
Fix compilation with clang
2017-09-30 11:56:30 +05:30
Kovid Goyal
2909fddaa2
Split out GL API wrapping code into its own header
2017-09-30 11:48:52 +05:30
