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As the blend texture, a drawing surface mask is used when masking is
enabled. It should be created as needed.
s/alpha_mask/surface_mask/ to follow OpenVG 1.1 naming.
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It is used for more advanced blending or mask update. It might not be
ever needed for some applications.
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Per b0427bedde80e3189524651a327235bdfddbc613.
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Eight less instructions with comments.
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Fix the case that the two points of a linear gradient coincide, or the
case that the radius of a radial gradient is equal to or less than 0.
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A typo from last commit.
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Depending on whether vgDrawPath(mode), vgDrawImage, or vgDrawGlyph[s] is
called, different paint-to-user and user-to-surface matrices should be
used to derive the sample points for the paint.
This fixes "paint" demo.
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Per OpenVG 1.1. A new shader stage is added. It uses the first two
constants of the fragment shader for color transformation parameters.
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Divide bits of VegaShaderType into 6 groups: paint, image, mask, fill,
premultiply, and bw. Each group represents a stage. At most one shader
from each group will be selected when constructing the final fragment
shader.
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Optional features such as auth-hinting are not implemented. There is no
anti-aliasing, and no effort is done to keep the glyph origin integral.
So the text quality is poor.
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For alpha-only VG formats, R = G = B = 1.0.
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Move depth/stencil buffer, blend texture view, and alpha mask view
creation to vg_context.c.
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With this commit, the pipe states are entirely managed by the renderer.
The rest of the code interfaces with the renderer instead of
manipulating the states directly.
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Let vg_context focus on OpenVG states and renderer focus on gallium
states.
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This allows us to eventually make g3d states opaque.
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vg_manager_validate_framebuffer should mark the fb dirty and have
vg_validate_state call cso_set_framebuffer. Rename VIEWPORT_DIRTY to
FRAMEBUFFER_DIRTY.
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The states are designated for polygon filling. Polygon filling is a
two-pass process utilizing the stencil buffer. polygon_fill and
polygon_array_fill functions are updated to make use of the state.
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vgMask renders to the alpha mask with special fragment shaders. The
operation can be supported by switching the renderer to FILTER state.
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The state is designated to perform image filtering. execute_filter is
updated to make use of the state.
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This state provides the ability to clear rectangles of the framebuffer
to the specified color, honoring scissoring. vegaClear is updated to
make use of the state.
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The state can be used to set rectangles of the depth buffer to 0.0f.
update_clip_state is changed to use the state for scissor update.
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This state provides glDrawTex-like function. It can be used for
vgSetPixels.
Rather than modifying every user of the renderer, this commit instead
modifies renderer_copy_surface to use DRAWTEX or COPY state internally
depending on whether the destination is the framebuffer.
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Renderer states are high-level states to perform specific tasks. The
renderer is initially in INIT state. In that state, the renderer is
used for OpenVG pipeline.
This commit adds a new COPY state to the renderer. The state is used
for copying between two pipe resources using textured drawing. It can
be used for vgCopyImage, for example.
Rather than modifying every user of the renderer, this commit instead
modifies renderer_copy_texture to use the COPY state internally.
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See http://www.opengl.org/registry/specs/ARB/wgl_pbuffer.txt
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The typo was introduced by commit
231d5457b275c1d9bbeff14165cf3da33dda176b.
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The blend sampler view is addressed with unnormalized coordinates in the
fragment shader. It should have the same orientation as the surface
does.
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The alpha mask is addressed with unnormalized coordinates in the
fragment shader. It should have the same orientation as the surface
does.
This fixes "mask" OpenVG demo.
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This is needed to properly sync with host side rendering. For example,
make sure we flush colorkey painting before updating the overlay.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
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Fix a crash when the subrectangle is not inside the fb. Fix wrong
pipe transfer when sx > 0 or sy + height != fb->height.
This fixes "readpixels" demo.
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These two samplers use non-normalized texture coordinates. wrap_r
cannot be PIPE_TEX_WRAP_REPEAT (the default).
This fixes
sp_tex_sample.c:1790:get_linear_unorm_wrap: Assertion `0' failed
assertion failure.
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Fix "lookup" demo crash.
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xmesa_get_name returns the name of the st_api, which is the same as
MESA_VERSION_STRING.
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It is the name of the rendering API. This field is informative.
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Tested with Wayland.
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Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
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